Greed feeding monitoring relay acc. VDE AR-N 4105, CM-UFD€¦ · To disable vector shift detection, jumper terminals Dj1 and Dj2. ∆ϕ1 ∆ϕ2 2CDC 252 016 F0012 To set-up vector

Data sheet

Grid feeding monitoring relay acc. VDE AR-N 4105CM-UFD.M21

The CM-UFD.M21 is a multifunctional grid feeding

monitoring relay for three-phase mains. It provides

different monitoring functions in accordance with

VDE AR-N 4105 to detect over- and undervoltage

(10 minutes average value, voltage increase and

decrease protection) as well as any changes in

grid frequency (frequency increase and decrease

protection). Additionally, vector shift detection is

configurable.

Characteristics – Monitoring of three-phase mains for grid feeding – Type-tested in accordance with VDE AR-N 4105 – Two-channel measuring circuit and two processors to

ensure single-fault tolerance – Over- and undervoltage, 10 minutes average value as well

as over- and underfrequency monitoring – Two-tier threshold settings for over-/ undervoltage/

-frequency configurable according to ‘BDEW guideline for generating plants connected to the medium voltage grid’

– Vector shift detection configurable – Measured values, thresholds and settings shown on the

display – All threshold values adjustable as absolute values – Default setting according to VDE AR-N 4105 – True RMS measuring principle – 2 input contacts for feedback signal of subsequent

section switch – Monitoring of subsequent section switch configurable – Tripping delay for each threshold adjustable – Alarm memory for up to 99 entries (incl. cause of alarm,

measured value, relative timestamp) – Test function – Simulation mode – Code lock and mechanical sealing possible – 5 digital outputs (transistor outputs) for signalling the

cause of alarm to a superior control system – 2 c/o (SPDT) contacts – 105 mm (4.13 in) width – LEDs for the indication of operational states

Marks

a CE

2CD

C 2

51 0

03 S

0012

Order data

Grid feeding monitoring relay

Type Rated control supply voltage Measuring range Order code

CM-UFD.M21 24-240 V AC/DC 3 x 15-520 V AC 1SVR 510 730 R0300

2 - CM-UFD.M21 - Grid feeding monitoring relay | Data sheet

Functions

Operating controls

1 Button Test

2 Indication of operational states

Q1: red LED - overvoltage

Q2: red LED - undervoltage

Q3: red LED - overfrequency

Q4: red LED - underfrequency

Q5: red LED - error, if PR1 or PR2 activated 1)

3 Dj: red LED - vector shift

4 11: yellow LED - 1st c/o (SPDT) contact energized

21: yellow LED - 2nd c/o (SPDT) contact energized

5 Display (4-digits)

Voltage, 10 minutes average value, frequency or vector shift value,

alarm and error messages

6 Indication of time

Time: yellow LED - a time delay is displayed

7 Indication of device mode

8 Button Set / Reset ►

9 Button Up / Down ▲▼

10 Indication of operational states

L1: yellow LED - kind of measured value



N: yellow LED - kind of measured value

11 Status indication of device locking and sealable lock button

Red LED - device is locked

1) if PR3 or PR4 activated, 2nd threshold referring to LED Q1-Q4

More details see ‚LEDs, status information and fault messages‘ on page 9.

1 2 4

5

6

7

8

9

11 10

3

Data sheet | CM-UFD.M21 - Grid feeding monitoring relay - 3

Application

The CM-UFD.M21 is a monitoring relay for feeding in three-phase mains. The device is connected between the decentral electrical energy source such as photovoltaic systems, wind turbines, block-type thermal power stations and the public grid. In case the public grid is disconnected due to any reason, for instance during maintenance work, the CM-UFD.M21 recognizes this powerless situation. Then, in conjunction with a section switch, the CM-UFD.M21 disconnects the decentral electrical energy source from the public grid, shows the corresponding alarm on the display and signals the cause of alarm to a superior control system. The grid feeding monitoring relay detects over- and undervoltage (10 minutes average value, voltage increase and decrease protection) as well as any changes in grid frequency (frequency increase and decrease protection). Additionally, vector shift detection is configurable.

Operation

The CM-UFD.M21 can be used to monitor 3-wire as well as 4-wire AC systems. It provides 2 c/o (SPDT) contacts for disconnection of the decentral electrical energy source from the public grid and two separate input contacts for the feedback signal of the section switch in order to enable monitoring of the disconnection. Five transistor outputs allow the signalling of the cause of alarm to a superior control system. The unit is adjusted by front-face setting buttons and a display, which allows the visualization of measured values and alarms. Furthermore, the display enables the selection of presettings as well as the precise adjustment of threshold values and delay times. To disable vector shift detection, jumper terminals Dj1 and Dj2.

All operational states are shown on the display and signalled by the front-face LEDs. See table ‚Indication of operational states‘ on page 9.

Button Test

Pressing the front-face button Test de-energizes the output relays immediately in order to disconnect the decentral electrical energy source from the public grid. If the input contacts Y0, Y1, Y2 for the feedback loop of the section switch are connected and monitoring of the feedback signal is activated, the CM-UFD.M21 will display the disconnection time of the system (reaction time of CM-UFD.M21 + tripping time of the section switch) until further pressing of any button.

Vector shift detection

To disable vector shift detection, jumper terminals Dj1 and Dj2.

∆ϕ1 ∆ϕ2

2CD

C 2

52 0

16 F

0012

To set-up vector shift detection vSr, go to menu mode and see ‚Control charts‘ on page 7 for more details. The detection can be configured to single-phase1PH, to trip in case of a vector shift in one of the three phase, or three-phase 3PH, to trip only in case of a simultaneous vector shift in all three phases. After applying control supply voltage or opening contacts Dj1 and Dj2, the vector shift detection is suppressed for the duration of the adjusted suppression time dEon.

Display mode (backmost decimal point 6 OFF)

The CM-UFD.M21 always starts-up in display mode and shows the values (voltage, frequency, etc.) as well as alarm messages and error codes.

Set / Reset ►

Press shortly to display the next measured value / alarm counter.

Press for > 2 s to reset, quit error message.

Press for > 4 s to display the selected program (e.g. PR1).

Press for > 10 s to display the firmware version (e.g. 0-02).

Up / Down ▲▼

Press shortly to change to menu mode, display of alarm memory (button Down) or cumulative time of alarms (button Up). Additional pressing of button Set for > 2 s makes a reset of the stored values. Press button Up / Down for > 2 s to display the maximum / minimum measured values (device needs to be unlocked). Additional pressing of button Set for > 2 s deletes the stored values.


Menu mode (backmost decimal point 7 ON)

Set / Reset ►

Press shortly to change to configuration mode.

Press for > 2 s to confirm last entry and return to display mode.

Up / Down ▲▼

Press shortly to select menu item; return to display mode.

If more than 30 seconds pass before a key is pressed, the CM-UFD.M21 automatically returns to display mode.

Configuration mode (backmost decimal point 7 flashing)

The display alternates between parameter name and currently set parameter value until either button Up or button Down is pressed to change the parameter value.

If more than 2 seconds pass before a key is pressed, the display starts to alternate again.

Set / Reset ►

Press shortly to confirm and go to next parameter.

Press for > 2 s to confirm last entry and return to display mode.

Up / Down ▲▼

Press shortly / for a long time to modify the value slowly / rapidly.

Press buttons Up and Down simultaneously to set the adjusted value to zero.

If more than 30 seconds (in simulation mode 15 minutes) pass before a key is pressed, the CM-UFD.M21 automatically applies the last entry and returns to display mode.

Simulation mode

The simulation mode allows the simulation of measured voltage and frequency values in order to check the settings and the correct tripping of the CM-UFD.M21. During the simulation, alarm and error messages will only be displayed via LEDs. If the device is sealed or locked, simulation is not possible. If the input contacts Y0, Y1, Y2 for the feedback loop of the section switch are connected and monitoring of the feedback signal is activated, the CM-UFD.M21 will display the disconnection time of the system (reaction time of CM-UFD.M21 + tripping time of section switch) until further pressing of any button.

To start simulation:1. Change to menu mode and select Si (button Up / Down) and press button Set.2. The display alternates between Si and the measurement parameter.3. Select the measurement parameter to be simulated (button Up / Down) and press button Set.4. The value of the simulated measurement parameter can be altered by pressing button Up / Down. Once the simulated

measurement value and the adjusted threshold value coincide, the output relays de-energize.

Note: The simulation of voltage values always takes into account the last set frequency value of simulation and vice versa.

To stop simulation:

Press button Set to return to menu mode. The CM-UFD.M21 continues to monitor the adjusted threshold values.

If more than 15 minutes pass before a key is pressed, the CM-UFD.M21 automatically returns to display mode.

Hint: If a threshold higher than the adjusted 10 minutes average value needs to be simulated, monitoring of UM has to be temporarily deactivated. The same applies to U,, when simulating U,, , and to U_ when simulating U__ in PR3…PR6.


Alarm counter

The alarm counter Ac will be incremented at every alarm and logs up to 99 alarms, which allows the documentation of the number of alarms since last resetting.

To view the alarm counter, change to display mode and see ‚Control charts‘ on page 7 for more details.

Cumulative time of alarms

The cumulative time of alarms tAL displays the duration of all cumulated disconnections of the decentral electrical energy source from the public grid.

Recording only with applied control supply voltage.

To view the cumulative time of alarms, change to display mode and see ‚Control charts‘ on page 7 for more details.

Press button Set / Reset for > 2 s to reset cumulative time of alarms and alarm counter.

Alarm memory

The non-volatile alarm memory contains the last 99 alarms including simulated alarms. The LEDs indicate the cause of alarm and the display alternates between tripping value and relative timestamp [hours].

To view the alarm memory, change to display mode and see ‚Control charts‘ on page 7 for more details.

The alarm memory will only be reset when changing program.

Scan mode

The scan mode Scn allows the cyclic display of all measured values. The corresponding display duration dit for each measured value is adjustable. To start scan mode, change to display mode and see ‚Control charts‘ on page 7 for more details. To change the display duration dit, go to menu mode and see ‚Control charts‘ on page 7 for more details.

Display refresh rate

To change the display refresh rate ddi, go to menu mode and see ‚Control charts‘ on page 7 for more details.

Code lock

The code lock can be activated to protect the adjusted parameters.

To set Pin and lock the device:1. Change to menu mode and select CodE (button Up / Down) and press button Set2. Enter Pin - default setting 504 (button Up / Down) and press button Set

An incorrect Pin will be notified by Err flashing three times3. Set code lock to oFF or on (button Up / Down) and press button Set4. Enter new Pin (button Up / Down) or go to 5.) to keep Pin unchanged5. Press button Set to confirm

– on flashing three times, code lock activated – oFF flashing three times, code lock deactivated

Lock button (sealable)

Slightly lift the button cover and turn 180°. Actuate the Lock button by strong pressing on the button cover > 2 s (LED

starts flashing) until the CM-UFD.M21 is locked or unlocked .

In case of setting attempts Loc is displayed for 3 seconds if device has been locked.

Sealing

The Lock button can be sealed to protected against unauthorized changes.


Electrical connection

A1

A1 A2

U <, U>, U>>, f<, f>, �ϕ

A2

Y0 Y1 Y2 L1 L2 L3 N

A2 Q1 Q2 Q3 Q4 Q5 12 11 14 22 21 24VQ

L3 N

11

12 14 22 24

21

L2L1

�ϕ1 �ϕ2

2CD

C 2

52 0

02 F

0012

A1-A2

L1, L2, L3, N

11-12/14

21-22/24

Y0-Y1

Y0-Y2

Dj1-Dj2

VQ

Q1

Q2

Q3

Q4

Q5

Control supply voltage

Measuring input

1st c/o (SPDT) contact

2nd c/o (SPDT) contact

1st input contact for feedback signal

2nd input contact for feedback signal

Vector shift detection

Jumper = vector shift detection disabled

Supply voltage of digital outputs

Digital output for overvoltage

Digital output for undervoltage

Digital output for overfrequency

Digital output for underfrequency

Digital output for:

error, if PR1 or PR2 activated

if PR3 or PR4 activated, 2nd threshold

referring to LED Q1-Q4

Connection diagram

Configuration and settings

Program setup

The suitable program must be set on the CM-UFD.M21 in accordance with the application. If the CM-UFD.M21 is sealed / locked (red LED on), sealing has to be deactivated first.

PR Connection Threshold values Voltage

1* 3 AC with N Low voltage

1 x overvoltage, 1 x undervoltage

1 x overfrequency, 1 x underfrequency

10 min average value, 1 x vector shift

230 V

2 3 AC w/o N 400 V

3 3 AC with N Medium voltage

2 x overvoltage, 2 x undervoltage

2 x overfrequency, 2 x underfrequency

10 min average value, 1 x vector shift

57.7 V

4 3 AC w/o N 100 V

5 3 AC with N 230 V

6 3 AC w/o N 400 V

* Default setting

Adjustment process:

If present, remove the seal (only authorized person)1. Apply control supply voltage at A1-A22. Slightly lift the button cover and turn 180°3. Actuate the small blue button by strong pressing on the button cover (LED starts flashing) until the flashing green LED

turns steady.4. Press button Up 1x -> Display InFo5. Press button Set / Reset 5x -> Display PR16. Set the program with the button Up / Down7. Press button Set / Reset 1x -> Display no8. Press button Down 1x -> Display yes9. Press button Set / Reset

Device resets and starts with the newly selected program

Hint: When changing programs, all parameters of the selected program are reset to "default settings" (see ‘Default settings and firmware version’ on page 11). Only change the parameters after having selected the correct program.


Control charts

PR1 3 AC with N, PR2 3 AC w/o N, acc. to VDE-AR-N 4105

Display modeM

enu

mod

e

Configuration mode

1) 3AC+N = 300 V

[ ] = Unit

Pressing buttons Up and Down simultaneously, sets the values to the smallest one.

Code-Reset = Press button Set 2 s while applying control supply voltage (Pin = 504)


PR3, PR5 3 AC with N, PR4, PR6 3 AC w/o N acc. to BDEW - Technical Guideline ‘Generating Plants Connected to the Medium-Voltage Network, Guideline for generating plants’ connection to and parallel operation with the medium-voltage network’, June 2008 issue.

Display mode

Men

u m

od

e

Configuration mode

1) 3AC+N = 300 V

[ ] = Unit

Pressing buttons Up and Down simultaneously, sets the values to the smallest one.

Code-Reset = Press button Set 2 s while applying control supply voltage (Pin = 504)


Indication of operational states

LEDs, status information and fault messages

Function Q1:

re

d L

ED

>U

Q2:

re

d L

ED

<U

Q3:

re

d L

ED

>F

Q4:

re

d L

ED

<F

Q5:

re

d L

ED

Dj

: re

d L

ED

11-1

2/14

, 21

-22/

24:

yello

w L

ED

Tim

e:

yello

w L

ED

L1:

ye

llow

LE

D

L2:

ye

llow

LE

D

L3:

ye

llow

LE

D

N:

yello

w L

ED

re

d/g

ree

n L

ED

Dis

pla

y

Ba

ck

mo

st d

ec

ima

l p

oin

t

Output relay energized V

Indication of time V

Indication of device locking

V

red: lockedgreen:

unlocked

Display mode OFF

Menu mode V

Configuration mode X

Scan mode Measured values 1)

Error or 2nd threshold value in Pr3…6 V

10 minutes average value (UN) V OFF OFF OFF OFF OFF OFF OFF AL N + Measured value 2)

10 minutes average value (UN),

ON-delay activeOFF OFF OFF OFF OFF OFF V OFF Measured value 2)

10 minutes average value (UN),

OFF-delay activeW OFF OFF OFF OFF OFF OFF V Time

Overvoltage (U>) V OFF OFF OFF OFF OFF OFF OFF AL + Measured value 2)

Overvoltage (U>), ON-delay active OFF OFF OFF OFF OFF OFF V OFF Measured value 2)

Overvoltage (U>), OFF-delay active W OFF OFF OFF OFF OFF OFF V Time

Overvoltage (U>>) V OFF OFF OFF V OFF OFF OFF AL + Measured value 2)

Overvoltage (U>>), ON-delay active OFF OFF OFF OFF OFF OFF V OFF Measured value 2)

Overvoltage (U>>), OFF-delay active W OFF OFF OFF W OFF OFF V Time

Undervoltage (U<) OFF V OFF OFF OFF OFF OFF OFF AL + Measured value 2)

Undervoltage (U<), ON-delay active OFF OFF OFF OFF OFF OFF V OFF Measured value 2)

Undervoltage (U<), OFF-delay active OFF W OFF OFF OFF OFF OFF V Time

Undervoltage (U<<) OFF V OFF OFF V OFF OFF OFF AL + Measured value 2)

Undervoltage (U<<), ON-delay active OFF OFF OFF OFF OFF OFF V OFF Measured value 2)

Undervoltage (U<<), OFF-delay active OFF W OFF OFF W OFF OFF V Time

Overfrequency (f>) OFF OFF V OFF OFF OFF OFF OFF AL + Measured value 2)

Overfrequency (f>), ON-delay active OFF OFF OFF OFF OFF OFF V OFF Measured value 2)

Overfrequency (f>), OFF-delay active OFF OFF W OFF OFF OFF OFF V Time

Overfrequency (f>>) OFF OFF V OFF V OFF OFF OFF AL + Measured value 2)

Overfrequency (f>>), ON-delay active OFF OFF OFF OFF OFF OFF V OFF Measured value 2)

Overfrequency (f>>), OFF-delay active OFF OFF W OFF W OFF OFF V Time

Underfrequency (f<) OFF OFF OFF V OFF OFF OFF OFF AL + Measured value 2)

Underfrequency (f<), ON-delay active OFF OFF OFF OFF OFF OFF V OFF Measured value 2)

Underfrequency (f<), OFF-delay active OFF OFF OFF W OFF OFF OFF V Time

Underfrequency (f<<) OFF OFF OFF V V OFF OFF OFF AL + Measured value 2)

Underfrequency (f<<), ON-delay active OFF OFF OFF OFF OFF OFF V OFF Measured value 2)

Underfrequency (f<<), OFF-delay active OFF OFF OFF W W OFF OFF V Time

Vector shift detection OFF OFF OFF OFF V OFF OFF AL + Measured value 2)

Vector shift detection, OFF-delay active OFF OFF OFF OFF W OFF V Time

Measured value (Voltage L1 against N) V OFF OFF V

Measured value (Voltage L2 against N) OFF V OFF V

Measured value (Voltage L3 against N) OFF OFF V V

Measured value (Voltage L1 against L2) V V OFF OFF

Measured value (Voltage L2 against L3) OFF V V OFF

Measured value (Voltage L1 against L3) V OFF V OFF

Vector shift (L1, L2, L3) X X X

1) In scan mode, all measured values are displayed cyclicIy. The display duration dit is adjustable.

2) The adjusted measured value is displayed.


Example of application

L1L2L3N

K1

*)

K2

A1

m6 A

A2 11

14 22 24

21

12 Y2 Y1 Y0

L2L1 L3 N

A

B

K1

K2

A

B

Low voltage grid

Inverter(s)Generator(s)Power plant

Optional use of n/o contacts, automatic recognition

For example, remote disconnection via ripple control receiver

in series with

Expansion of existing installation:

in series with

where applicable, a transformer

*)

A B

2CD

C 2

52 0

13 F

0212


Default settings and firmware version

When changing program, all parameters are reset to the default settings.

Default settings

Low voltage Medium voltage

3 AC + N L-L: 400 V L-N: 230 V

3 AC L-L: 400 V

3 AC + N L-L: 100 V L-N: 57.7 V

3 AC L-L: 100 V

3 AC + N L-L: 400 V L-N: 230 V

3 AC L-L: 400V

Menu point Parameter Unit Pr1 1) Pr2 Pr3 Pr4 Pr5 Pr6

U,,

Ove

rvol

tage

2

U,,: Alarm on/off - - on on on on

U,,: Threshold value V - - 66.4 115 264 458

H,,: Hysteresis V - - 1.0 1.0 3.0 3.0

dAL: ON-delay s - - 0.10 0.10 0.10 0.10

doF: OFF-delay s - - 60 60 60 60

U,

Ove

rvol

tage

1

U,: Alarm on/off on on on on on on

U,: Threshold value V 264 458 62.3 108 249 430

H,: Hysteresis V 5.0 5.0 1.0 1.0 3.0 3.0

dAL: ON-delay s 0.10 0.10 60.00 60.00 60.00 60.00

doF: OFF-delay s 60 60 60 60 60 60

UM

10 m

in.

aver

age

UM: Alarm on/off on on off off off off

UM: Threshold value V 253 438 253 438 253 438

HM: Hysteresis V 3.0 3.0 3.0 3.0 3.0 3.0

dAL: ON-delay s 0.10 0.10 0.10 0.10 0.10 0.10

doF: OFF-delay s 60 60 60 60 60 60

U_

Und

ervo

ltage

1

U_: Alarm on/off on on On On on on

U_: Threshold value V 184 318 46.2 80.0 184 318

H_: Hysteresis V 5.0 5.0 1.0 1.0 3.0 3.0

dAL: ON-delay s 0.10 0.10 2.70 2.70 2.70 2.70

doF: OFF-delay s 60 60 60 60 60 60

U__

Und

ervo

ltage

2

U__: Alarm on/off - - off off off off

U__: Threshold value V - - 26.0 45.0 104 180

H__: Hysteresis V - - 1.0 1.0 2.0 2.0

dAL: ON-delay s - - 0.30 0.30 0.30 0.30

doF: OFF-delay s - - 60 60 60 60

F,,

Ove

rfre

que

ncy

2

F,,: Alarm on/off - - off off off off

F,,: Threshold value Hz - - 51.50 51.50 51.50 51.50

H,,: Hysteresis Hz - - 1.45 1.45 1.45 1.45

dAL: ON-delay s - - 0.10 0.10 0.10 0.10

doF: OFF-delay s - - 60 60 60 60

F,

Ove

rfre

que

ncy

1

F,: Alarm on/off on on on on on on

F,: Threshold value Hz 51.50 51.50 51.50 51.50 51.50 51.50

H,: Hysteresis Hz 1.45 1.45 1.45 1.45 1.45 1.45

dAL: ON-delay s 0.10 0.10 0.10 0.10 0.10 0.10

doF: OFF-delay s 60 60 60 60 60 60


Default settings

Low voltage Medium voltage

3 AC + N L-L: 400 V L-N: 230 V

3 AC L-L: 400 V

3 AC + N L-L: 100 V L-N: 57.7 V

3 AC L-L: 100 V

3 AC + N L-L: 400 V L-N: 230 V

3 AC L-L: 400V

Menu point Parameter Unit Pr1 1) Pr2 Pr3 Pr4 Pr5 Pr6

F_

Und

erfr

eque

ncy

1 F_: Alarm on/off on on on on on on

F_: Threshold value Hz 47.50 47.50 47.50 47.50 47.50 47.50

H_: Hysteresis Hz 1.00 1.00 1.00 1.00 1.00 1.00

dAL: ON-delay s 0.10 0.10 0.10 0.10 0.10 0.10

doF: OFF-delay s 60 60 60 60 60 60

F__

Und

erfr

eque

ncy

2 F__: Alarm on/off - - off off off off

F__: Threshold value Hz - - 47.50 47.50 47.50 47.50

H__: Hysteresis Hz - - 1.00 1.00 1.00 1.00

dAL: ON-delay s - - 0.10 0.10 0.10 0.10

doF: OFF-delay s - - 60 60 60 60

v5r

Vect

or s

hift

v5r: Alarm on/off off off off off off off

vsr: Threshold value ° 10.0 10.0 10.0 10.0 10.0 10.0

doF: OFF-delay s 3 3 3 3 3 3

dEon: Suppression time s 2 2 3 3 3 3

v5r: Number of phases 3ph 3ph 3ph 3ph 3ph 3ph

rEL

Sec

tion

switc

h

trEL: Switching time Y1,Y2 s 5.0 5.0 off off off off

ddi

Dis

pla

y ddi: Display refresh rate s 0.5 0.5 0.5 0.5 0.5 0.5

dit: Display duration SCn

s 3.5 3.5 3.5 3.5 3.5 3.5

Si

Sim

ulat

ion U: Voltage V 230 400 57.7 100 230 400

F: Frequency Hz 50.00 50.00 50.00 50.00 50.00 50.00

v5r: Vector shift ° 0.0 0.0 0.0 0.0 0.0 0.0

CodE Pin pin: Pin code 504 504 504 504 504 504

Info Info

fnr: Firmware version 0-02 0-02 0-02 0-02 0-02 0-02

snr: Serial number xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx

h: Operating hours h xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx

err: Error counter xxx xxx xxx xxx xxx xxx

Pr: Program 1 2 3 4 5 6

1) factory preset

2) A mains power failure, caused by external switching, normally generates a vector shift. Experience shows that these vector shifts during switching

operations in the grid are up to 5 °. In case of disturbances in the grid, the vector shifts are higher and may damage the generator, e.g. at the

power unit or coupling.

Protective functions, default settings according to VDE-AR-N 4105 section 6.5.2:

Terms according to VDE-AR-N 4105

Overvoltage monitoring U, Voltage increase protection U>> 1,15 Un 100 ms

10 minutes average value UM Voltage increase protection U> 1,1 Un 100 ms

Undervoltage monitoring U_ Voltage decrease protection U< 0,8 Un 100 ms

Overfrequency monitoring F, Frequency increase protection f> 51,5 Hz 100 ms

Underfrequency monitoring F_ Frequency decrease protection f< 47,5 Hz 100 ms


Troubleshooting

Error Cause Remedy

EEEE or -EEE

appears in the display

Measured voltage, frequency or the vector

shift is too large or too small

Consider the measuring range

Err4 appears in the display Too high internal measurement deviation of the

two measuring channels

Perform a reset:

Interrupt the conrol supply voltage for >5 s

Err5 appears in the display Error internal regulation

Err6 appears in the display Communication error internal interface

Err7 appears in the display + LED of the

faulty output circuit is on

Error feedback contacts Feedback contacts not connected

- set trEl -> off

Feedback contacts connected

- check the correct connection

- adjust the turn-on time of the section switch

under trEL.

- perform a reset:

Interrupt the conrol supply voltage for >5 s

Err8 appears in the display Hysteresis error: overlapping of the release

points

Upper threshold value must be higher than

the lower threshold value, check the threshold

values

Err9 appears in the display Configuration error Reset to factory settings, see ‚Program setup‘

on page 6

A time expires in the display If an OFF-delay dof is active, the time runs

down in the display (the shortest one first)

Wait until the time is complete (depending on

the setting, several times may elapse one after

the other)

Device cannot be configured / only the

threshold values can be configured

Code lock / Sealing activated When having problems with the code lock (Pin

forgotten), the lock can be deactivated and the

Pin can be reset to 504, by pressing the button

► until Code / off is shown in the display,

while switching on the control supply voltage.

Implausible voltage values Pr selected with N, but N not connected Select Pr without N or connect N

Loc appears in the display Sealing is active See ‚Program setup‘ on page 6

Code appears in the display Code lock is active See ‚Code lock‘ on page 5


Technical data

Data at Ta = 25 °C and rated values, unless otherwise indicated

Input circuits

Type CM-UFD.M21

Supply circuit A1-A2

Rated control supply voltage Us 24-240 V AC/DC

Rated control supply voltage Us tolerance -15...+20 %

Rated frequency DC and 50/60 Hz respectively

Frequency range AC 40-70 Hz

Typical current / power consumption 24 V DC 92 mA / 2.2 W

230 V AC 25 mA / 5.7 VA

Power failure buffering time 5 ms

Measuring circuit L1, L2, L3 (N)

Monitoring functions over-/undervoltage U,,, U, / U_, U__ yes, can be switched off

over-/underfrequency F,,, F, / F_, F__ yes, can be switched off

10 minutes average value per phase UM yes, can be switched off

vector shift v5r yes, can be switched off

Measuring ranges over-/undervoltage U,,, U, / U_, U__ 10-310 V AC (L1, L2, L3, N)

15-530 V AC (L1, L2, L3)

over-/underfrequency F,,, F, / F_, F__ 40-70 Hz

vector shift v5r 0…+45°

Threshold values over-/undervoltage, 10 minutes average value

U,,, U, / U_, U__, UM

15-300 V AC, adjustable in 0.1 V steps (< 100 V)

/ in 1 V steps (> 100 V) (L1, L2, L3, N)

15-520 V AC, adjustable in 0.1 V steps (< 100 V)

/ in 1 V steps (> 100 V) (L1, L2, L3)

over-/underfrequency F,,, F, / F_, F__ 45-65 Hz, adjustable in 0.01 Hz steps

vector shift v5r 2-20 °, adjustable in 0.1° steps

Hysteresis related to

the threshold value

over-/undervoltage,

10 minutes average value H,,, H, / H_, H__, HM1.0-99.9 V, adjustable in 0.1 V steps

over-/underfrequency H,,, H, / H_, H__ 0.05-10.00 Hz, adjustable in

0.05 Hz steps

Accuracy of

measurements

voltage measurement L1,L2,L3,N ± 0.6 % of measured value

voltage measurement L1,L2,L3 ± 0.8 % of measured value

frequency measurement ± 0.04 Hz ± 1 digit

Display accuracy > 100 V: ± 1 digit (1 V)

< 100 V: ± 1 digit (0.1 V)

Rated frequency of measuring signal 50/60 Hz

Frequency range of the measuring signal 40-70 Hz

Measuring principle True RMS

Max. reaction time (Measuring cycle CM-UFD.M21 +

switching time of the relays)

overvoltage U,,, U, < 65 ms

undervoltage U_, U__ < 65 ms

overfrequency F,,, F, < 65 ms

underfrequency F_, F__ < 65 ms

10 minutes average value per

phase UMdepending on the voltage jump

vector shift v5r < 50 ms

Accuracy within the rated control supply voltage tolerance DU ≤ 0.1 %

Accuracy within the temperature range DU ≤ 0.15 % / °C


Feedback contacts Y0, Y1, Y2

Number 2

Kind of inputs signal source (Y0)

feedback loop section switch 1 (Y1)

feedback loop section switch 2 (Y2)

Electrical isolation from the supply voltage yes

from the measuring circuit no

from the relay outputs yes

from the transistor outputs yes

Type of triggering volt-free triggering

Max. switching current in the control circuit 4 mA

Max. cable length at the control input 5 m

No-load voltage at the control inputs < 35 V DC

Feedback time section switch trEL 0.5-99.0 s, adjustable in 0.1 s steps

Control circuit vector shift detection Dj1-Dj2

Type of triggering volt-free triggering


from the measuring circuit no


from the transistor outputs yes

Control input, control function jumpered = vector shift detection de-activated

open = vector shift detection activated (additional

configuration in the software is necessary)

Max. switching current in the control circuit 4 mA

Max. cable length at the control input 5 m

No-load voltage at the control inputs < 35 V DC

Timing circuits

Start-up delay (prior to first grid connection) see 'adjustable OFF-delay' dof

Restart delay (after a short-term interruption <3 s) 5 s (fixed)

Tripping delay ON-and/or OFF-delay configurable

Adjustment range of the ON-delay over-/undervoltage, over-/

underfrequency dAL0.05-60.00 s, adjustable in 0.01 s steps

Tolerance of the ON-delay 0.1 % ± 5 ms

Adjustment range of the OFF-delay over-/undervoltage, over-/

underfrequency doF0 (>200 ms)-999 s, adjustable in 1 s steps

vector shift doF 3-240 s, adjustable in 1 s steps

Tolerance of the OFF-delay 0.1 % ± 105 ms

Delayed activation of the vector shift detection dEon

2-20 s, adjustable in 1 s steps

(Delay is effective just once after switching on or

restart)

Accuracy within the rated control supply voltage tolerance Dt ≤ 0.01 %

Accuracy within the temperature range Dt ≤ 0.0001 % / °C

User interface

Indication of operational states

See ‚Indication of operational states‘ on page 9


Output circuits

Relay outputs

Kind of outputs 11-12/14 Relay, 1st c/o (SPDT) contact

21-22/24 Relay, 2nd c/o (SPDT) contact

2 x 1 c/o (SPDT) contact

Operating principle closed-circuit principle

Contact material AgNi

Rated operational voltage Ue (IEC/EN 60947-1) 250 V AC

Minimum switching voltage / minimum switching current 12 V / 10 mA

Maximum switching voltage / maximum switching current 400 V AC / 6A

Rated operational current Ie(IEC/EN 60947-5-1) AC12 (resistive) 230 V 6 A

AC15 (inductive) 230 V 1.5 A

DC12 (resistive) 24 V 6 A

DC13 (inductive) 24 V 2 A

Mechanical lifetime 30 x 106 switching cycles

Electrical lifetime at AC12, 230 V AC, 6 A 1 x 106 switching cycles

Maximum fuse rating to achieve short-circuit protection n/c contact 6 A, operating class gG/gL

n/o contact 6 A, operating class gG/gL

Conventional thermal current Ith (IEC/EN 60947-1) 6 A

Transistor outputs

Number 5

Rated operational voltage Ue 24 V DC

Operational voltage range 4.5-27 V DC

Residual ripple 5 %

Current state "0" max. 0.1 mA / output

state "1" max. 20 mA / output


from the measuring circuit yes


from the inputs of the

feedback contactsyes

Maximum fuse rating to achieve short-circuit protection 100 mA fast-acting

General data

MTBF on request

Duty time 100%

Dimensions (W x H x D) product dimensions 105 x 90 x 69 mm (4.13 x 3.54 x 2.72 in)

packaging dimensions 175 x 107 x 130 mm (6.89 x 4.21 x 5.12 in)

Weight net weight 0.225 kg (0.496 lb)

gross weight 0.343 kg (0.756 lb)

Mounting DIN rail (IEC/EN 60715) TH 35-7.5 and

TH 35-15, snap-on mounting without any tool

Mounting position any

Minimum distance to other units vertical not necessary

horizontal not necessary

Degree of protection housing / terminals IP30 / IP20


Electrical connection

Wire size fine-strand with(out) wire end ferrule 1 x 0.5 - 2.5 mm² (1 x 20 - 14 AWG)

rigid 1 x 0.5 - 4 mm² (1 x 20 - 12 AWG)

Stripping length 7 mm (0.28 in)

Tightening torque 0.5 Nm (4.42 lb.in)

Environmental data

Ambient temperature ranges operation -20...+55 °C

storage -20…+70 °C

transport -20…+70 °C

Damp heat, cyclic (IEC 60068-2-30) 55 °C, 6 cycles

Climatic category (EN 50178) 3K3

Vibration, sinusoidal (IEC/EN 60255-21-1) Class 1

Shock (IEC/EN 60255-21-2) Class 1

Isolation data

Rated insulation voltage Ui

(IEC/EN 60947-1, IEC/EN 60664-1)

supply/measuring/output circuits300 V

output circuit 1/output circuit 2

Rated impulse withstand voltage Uimp

(IEC/EN 60947-1, IEC/EN 60664-1)

supply/measuring/output circuits4 kV


Basic insulation (IEC/EN 60664-1) supply/measuring/output circuits300 V


Test voltage, routine test

(IEC/EN 60255-27, IEC/EN 61010-1)

supply/measuring/output circuits3820 V DC


Test voltage, type test

(IEC/EN 60255-27)

supply/measuring/output circuits4600 V DC


Protective separation

(IEC/EN 61140, EN 50178)

supply/measuring/output circuits300 V


Pollution degree (IEC/EN 60664-1) 2

Overvoltage category (IEC/EN 60664-1) III

Standards / Directives

Product standard IEC/EN 60255

Application standards VDE-AR-N 4105, BDEW

Low Voltage Directive 2006/95/EC

EMC Directive 2004/108/EC

RoHS Directive 2002/95/EC

Electromagnetic compatibility

Interference immunity to IEC/EN 61000-6-1, IEC/EN 61000-6-2

electrostatic discharge IEC/EN 61000-4-2 Level 3, 6 kV / 8 kV

radiated, radio-frequency, electromagnetic field IEC/EN 61000-4-3 Level 3, 10 V/m (80-1000 MHz)

Level 2, 3 V/m (1400-2000 MHz)

Level 1, 1 V/m (2000-2700 MHz)

electrical fast transient / burst IEC/EN 61000-4-4 Level 4, 4 kV / 5 kHz

surge IEC/EN 61000-4-5 Level 3, 1 kV L-L, 2kV L-earth

conducted disturbances, induced by

radio-frequency fields

IEC/EN 61000-4-6 Level 3, 10 V

Interference emission IEC/EN 61000-6-3, IEC/EN 61000-6-4

high-frequency radiated IEC/CISPR 22, EN 55022 Class B

high-frequency conducted IEC/CISPR 22, EN 55022 Class B


Technical diagrams

Load limit curves

300

200

100 80 60 50 40 30

20

10 1 2 4 6 10

I A

V

U

0.1 0.2 0.5

resistive load

2CD

C 2

52 0

10 F

0212

AC load (resistive)

300

200

100 80 60 50 40 30

20

10 1 2 5 10

I A

V

U

0.1 0.2 0.5

resistive load

2CD

C 2

52 0

11 F

0212

DC load (resistive)

104

2 4 6 8 10 12 14 16

105

106

107

Switching current [A]

250 V ACresistive load

Sw

itchi

ng c

ycle

s

2CD

C 2

52 0

12 F

0212

Contact lifetime


Dimensions

in mm and inches

48 1.89”

45 1.77

”

90 3.54

”

3 0

.12”

61.8

2.43

”

16.5 0.65”

105 4.13”

58 2.28”

2CD

C 2

52 0

08 F

0012

Further documentation

Document title Document type Document number

Electronic products and relays Technical catalogue 2CDC 110 004 C020x

CM-UFD.M21 Grid feeding monitoring relay Instruction sheet 1SVC 510 810 M0000

You can find the documentation on the internet at www.abb.com/lowvoltage -> Control Products -> Electronic Relays and Controls -> Three Phase Monitors.


Note:We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB AG does not accept any responsibility whatsoever for potential errors or possible lack of information in this document.

We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction, disclosure to third parties or utilization of its contents – in whole or in parts – is forbidden without prior written consent of ABB AG.

Copyright© 2012 ABB All rights reserved

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You can find the address of your local sales organisation on the ABB home pagehttp://www.abb.com/contacts -> Low Voltage Products and Systems

Documents

Greed feeding monitoring relay acc. VDE AR-N 4105, CM-UFD€¦ · To disable vector shift detection, jumper terminals Dj1 and Dj2. ∆ϕ1 ∆ϕ2 2CDC 252 016 F0012 To set-up vector