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WRS-2224Programmable Relay Scanner
Instruction Manual
DOUGLASlighting controls
R
Contents
WRS-2224: Directions & Applications
Contents
Introduction ........................................................................................................................... 1
Parts and Dimensions ............................................................................................................. 2
Specifications ........................................................................................................................ 3
Installation ............................................................................................................................. 4
Switch Inputs ......................................................................................................................... 4
Basics: Normal Mode/Version Number ..................................................................................... 5
Setup: Input Configuration Mode ............................................................................................ 6
Setup: Program Mode ............................................................................................................ 7
Setup: Flick Warn Option ........................................................................................................ 8
Setup: Time Out Option .......................................................................................................... 9
Connections: Stand Alone Panels .......................................................................................... 10
Connections: Multiple Panels ................................................................................................ 12
Troubleshooting ................................................................................................................... 14
Appendix A -Input/Output Log ............................................................................................... 15
Notes .................................................................................................................................. 16
lighting controlsDOUGLAS
Relay Output Connections� � 24 outputs, 12 per side.
� � The relay scanner can be programmed with the built-in keypad to switch a group of relay outputs when signaled by an input. There are 5 groupings (5 inputs) available.
� � Each group can support the FLICK WARN switching option, while only one group can be programmed to support the TIME OUT option.
Group Input Connections� � 5 available, each controlling one relay
group.
� � Up to 6 low-voltage switching devices can be connected in parallel to each input.
� � Separate electrically isolated 24V return connections provided for groups 1, 2 & 3 and for groups 4 & 5.
Digital Link Connection� � Allows the scanner to be linked to a network or another system.
� � There are modules available for:
24V TransformerConnections
WRS-2224 Programmable Relay Scanner
Introduction
WRS-2224: Directions & Applications page 1 lighting controls
a. RS-485 Network on new line Proprietary Communications Protocol;
b. FTT-10 Network on new line Lonworks Open Standard Protocol.
The WRS-2224 Scanner can be programmed so that when an input is signalled ON or OFF, it switches a specific group of output relays ON or OFF. The WRS-2224 has 5 inputs and 24 relay outputs.
Each input can be have a unique relay group programmed to it. In addition to the basic ON and OFFcommands, an input can have the optional switching features of 'Flick-Warn' and 'Time-Out'.
DOUGLAS
4.0"(103 mm)
1.75"(45 mm)
6.5"(165 mm)
Plan View Side View
3
5
7
9
11
114
16
18
20
22
24
13
15
17
19
21
23
2
4
6
8
10
12
Mode Select Buttons & LEDs
Dimensions
Parts & Dimensions
Master Switch 0verride Buttons
WRS-2224: Directions & Applications page 2 lighting controls
Relay Outputs� � 24 output terminals
(12 per side) are provided for individual relay control.
� � Douglas 2-wire switches can be connected in parallel to permit individual control of a relay by a switch.
Individual Output LEDs� � In NORMAL mode, LEDs display
if the relay is ON or OFF.
� � In PROGRAM mode, LEDs display if the relay is included in the group that is being programmed to the selected group input.
� � NORMAL mode.
� � PROGRAM mode.
� � OPTIONS mode:
a. FLICK WARN after OFF;b. TIME OUT after ON;c. TIME OUT with FLICK WARN.
Directions� � Directions are printed on the
keyboard for handy user reference.
Digital Link Control Socket� � Plug-in for a RS-485 or Lonworks
network interface such as a Douglas WNX-2624 module.
Individual Output Buttons� � In NORMAL mode, use these buttons to
switch the connected relay ON or OFF.
� � In PROGRAM mode, use these buttons to enter or remove the connected relay to/from the group being programmed.
� � Use these buttons to switch all of the relays in a selected input group ON or OFF.
Input Select Button� � Use this button to select the relay
groups/switch inputs 1, 2, 3, 4 or 5.
Group Switch Inputs (5)� � Connect Douglas 2-wire switches to
switch the group of relays ON or OFF.
� � You can connect up to 6 switches and/or 2-wire timer outputs to the same switch input.
� � Relay Scanners mount to 35mm DIN rail installed in relay panels.
� Each unit is shipped with DIN mounting rail.
DOUGLAS
Specifications
Specifications
WRS-2224: Directions & Applications page 3 lighting controls
General� � Power:
24VAC / 50mA Class 2 Low Voltage device.
Power rating does not include power used to switch relays.
� � Master Switches:
There are 5 master switch inputs that are compatible with all models of Douglas relay switches.
A maximum of 6 switches can be connected in parallel to the same master switch input.
Maximum wire length for a master switch is 2000'. (600m) if using 18 AWG wire.
� � Digital Link:
Programmable scanners have a digital link socket that permits connection of network communication modules.
Outputs� � 24 Douglas relay outputs.
� � Outputs fire in sequence (<4 seconds) to prevent overloads in the line and low voltage circuits.
� � Connect a maximum of 4 relays to each output. Maximum wire length per output is 500' (150m).
� � Relay outputs are isolated from each other. The pulse of a local switch connected to a relay on an output will not pass through the scanner to a relay connected on another output.
Programming� � Use the membrane keypad built into the face of
the programmable relay scanner to assign relay groups to each of the master switch inputs.
� � Program settings (relay groups) are not lost in the event of a power outage.
� � Programming directions are printed into the front cover for handy reference.
Environment� � Indoors, stationary, non-vibrating, non-corrosive
atmosphere and non-condensing humidity.
� � Ambient operating temperature: 0O F to +1200 F (-15O to +50O C).
DOUGLAS
Installation
INSTALLATION INSTRUCTIONS1. Install the WRS-2224 Programmable Relay Scanner inside the relay panel. The scanner mounts to 35mm DIN rail, as shown in the drawing to the right. Mounting rail is supplied with each scanner unit.
2. Connect the red terminal of each relay to an output terminal of the scanner. You should use 18 AWG wire. In most instances, If there are
more than 24 relays, install additional scanners.
3. Connect the group switching devices (switch or timer) to the scanner's group inputs. If you are connecting 24V contact switching devices other than a Douglas switch or time clock, you must first configure the inputs for a 24V contact. Use the keyboard on the scanner, as detailed in the 'Input Configuration' section on page 6 of this manual.
Momentary ON Contact TrBW
OFF Contact
Maintained Form CContact Set
Red
Douglas switch OK with momentary contacts. NOT OK with maintained contacts.
Master Sw Override
ONDiode
OFFDiode
OFF Diode
ON Diode
NO NC
COMCoil
3
5
7
9
1 1
11 4
1 6
1 8
2 0
2 2
2 4
1 3
1 5
1 7
1 9
2 1
2 3
2
4
6
8
1 0
12
WRS-2224RelayScanner
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131415161718192021222324WB
SwitchInputs
123B45B
3
5
7
9
1 1
11 4
1 6
1 8
2 0
2 2
2 4
1 3
1 5
1 7
1 9
2 1
2 3
2
4
6
8
1 0
12
WRS-2224RelayScanner
123456789101112
131415161718192021222324WB
SwitchInputs
123B45B
TrBW
Red
WR-8001 Rocker Switch
Red
WR-8501 PushbuttonSwitch with ON & OFF LEDs
Red
WTP-4408
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1 2 3
4 5 6
7 8 9
0
A B C D
Esc Clr1 2 3
4 5 6
7 8 9
0
Time Clock
� � The inputs of the WRS-2224 scanner are compatible with all models of Douglas relay switches. However, If you are connecting a different switch type, you must re-configure the input before connecting the switch. Follow the procedure described in the 'Input Configuration' section of this manual.
� � When connected to the scanner, the LEDs of a Douglas switch will show the state of the relay group. If any of the relays in the group are ON, the group is defined as being ON and the red LED is lit. Only when all of the relays in the group are OFF is the group defined as being OFF and the green LED is lit.
� � Take care when using Douglas WR-8501 switches. The WR-8501 push button switch will always send a signal that is opposite to its displayed state. If repeat ON or OFF control is desired, use the WR-8001 rocker switch which is able to select an ON or OFF signal.
� ��The inputs of the WRS-2224 scanner are compatible with Douglas timers, such as the WTP-4408. When connecting a Douglas timer to the WRS-2224 scanner, the input must be configured for a Douglas relay switch (default).
3
5
7
9
11
114
16
18
20
22
24
13
15
17
19
21
23
2
4
6
8
10
12
DIN Rail
Inputs1-5
Outputs13-24
Outputs1-12
WRS-2224: Directions & Applications page 4 lighting controls
Switching with Momentary Contacts that use Diodes� ��ON & OFF switching with contacts from another
device or system is best accomplished with momentary type contacts that have a diode connected in series (one contact and diode for ON and another for OFF).
� � Momentary contacts that utilize diodes have 2 advantages:1. It is possible to have repeat ON or OFF
commands. For example, during the night, an OFF signal could be issued every hour to ensure lights are swept OFF.
2. Douglas relay switches can be connected in parallel for convenient override.
� � Momentary contacts with diodes mimic the Douglas relay switch. Thus, the default input configuration of the WRS-2224 scanner is for the Douglas WR-8501 relay switch.
Switching with 24V Momentary or Maintained Contacts (no Diodes) � ��Inputs for the WRS-2224 can also be configured to
accept 24V signals that have no diode connected. The signal can be momentary or maintained.
� � When using the 24V contact control, be aware there are some restrictions. An input can be configured to switch relays ON when 24V is applied and OFF when it is removed. However, when this is the case it is not possible to send repeat OFF signals without an intervening ON signal. You can also configure the input so that only OFF signals are sent if a repeat signal is desired, although in this case there would be no ON signal. Should repeat OFF as well as ON signals be needed, then two 24V contacts would be needed with two inputs, one for the OFF signal and one for the ON.
Refer to 'Input Configuration Mode' on page 6 for all the settings available for 24V contact control.
(OR)
Douglas Relay Switches
Douglas Timer Automation
Maximum:6 switches
4. A maximum of 6 switching devices can be connected in parallel to the same master input, with a maximum wire length of 2000'/600m if using 18 AWG wire. Refer to the Switch Inputs section below for more information on input switching devices.
5. After all the output relays have been assigned to lighting loads, determine which relays are to be switched together as groups.
6. Use the keypad built into the front surface of the scanner to assign relay groups to be switched by each input. Refer to the SETUP pages of this manual and the directions printed on the scanner for details.
Switch Inputs
DOUGLAS
NORMAL MODEAllows the connected relays to be switched withthe scanner.
To Use Normal Mode:
Output TerminalsOutput Leds
Output Buttons
Normal ModeSelect Button
Basics: Normal Mode
3.0 #5, #6 3.1 #1, #5, #6 3.2 #2, #5, #6 3.3 #1, #2, #5, #6 3.4 #3, #5, #6
WRS-2224: Directions & Applications page 5 lighting controls
1. Make sure the individual relays are properly connected to the output terminals.
2. The WRS-2224 Scanner will usually be in NORMAL mode. If left in PROGRAM mode, it will revert to NORMAL mode after 2 minutes.
If the NORMAL MODE indicator LED is OFF, press its select button to exit the PROGRAM mode. The NORMAL MODE indicator LED should turn ON.
3. In NORMAL MODE, the output LED will be ON if the connected relay is on.
To switch any relay ON/OFF, press its output button.
4. A flashing LED indicates:
(a) There is a defect in the relay (or)
(b) There are 2 relays connected to the same terminal with one relay ON and the other OFF.
Basics: Version Number Basics: Normal Mode
VERSION NUMBER DISPLAYWhen you are in NORMAL mode and press the NORMAL MODE select button, some output LEDs, as well as the button's indicator LED, will flash for 10 seconds.
The combination of flashing output LEDs 1-8 (left output terminal) indicate the version number -in binary code- of the Relay Scanner.
If any of the output LEDs 13-20 (right output terminal) are flashing, their combination indicates the version number -in binary code- of the WNX-2624 Network Node attached to the Scanner's Digital Link.
1. Any flashing output LEDs 1-8 indicate the version number of the Relay Scanner, with any flashing LEDs 1-4 indicating the integer after the decimal point and any flashing LEDs 5-8 indicating the integer before the decimal point.
2. The combination of flashing numbers #1-4 and #5-8 denote the integer in binary code (see the insert at upper right).
3. When a Network Node is attached to the Digital Link, some of the output LEDs 13-20 will be flashing. They indicate the version number of the Network Node, with the combination of flashing LEDs 13-16 indicating the integer after the decimal point and the combination of flashing LEDs 17-20 indicating the integer before the decimal point.
4. See the insert at lower right for examples of flashing LED combinations for version numbers that may currently be in use.
LEDs Flashing
4.0 #194.1 #13, #194.2 #14, #194.3 #13, #14, #194.4 #15, #19
Node Version # LEDs Flashing
BINARY CODE is a method of expressing all whole numbers as some combination of powers of the number 2.
A power of 2 is the number of times 2 is multiplied by itself, where 2O =1, 21=2, 22=4, 23=8, etc.
In binary code, the number one would be 2O, the number two would be 21, the number three would be 20+21 (1+2), and the number four would be 22. In like manner, you can express all whole numbers as either a power of 2 or as a combin- ation of two or more powers of 2.
Scanner Version #
Binary Code
0 = none1 = 20
2 = 21
3 = 20+21
4 = 22
5 = 20+22
6 = 21+22
7 = 20+21+22
8 = 23
NumbersEquivalent
Flashing LEDs(none flashing)firstsecondfirst & secondthirdfirst & thirdsecond & thirdfirst, second & thirdfourth
DOUGLAS
INPUT CONFIGURE MODE
To Use Input Configure Mode:
Table 1. Switch Hardware Type
Switch Type Configured for Action
13
14
15
16
17
18
19
20
21 (Default)
22
23
(13) - ON when switched
Coil
LEDs
Setup: Input Configure Mode
1. Make sure NORMAL MODE is selected. Its top indicator light should be ON.
2. Use the INPUT SELECT BUTTON to scroll to the group input #1-5 you wish to configure (when its INPUT LED is ON).
3. Press and hold the OPTIONS MODE select button. The FLICK WARN LED will begin flashing.
4. One of the OUTPUT LEDs #13-23 will display, showing the current configuration selected for the input. Refer to the table below for a list of all available configurations. The factory default is #21, the Douglas WR-8501 LED indicator rectified AC pulse switch.
5. Depress the OUTPUT SELECT BUTTON(S) (#13-23) to select the desired configuration(s) for the input.
You have 10 seconds to do this. After 10 seconds, the FLICK WARN LED stops flashing and the scanner reverts to NORMAL mode.
6. Repeat steps 2-5 to configure other group inputs.
Output Buttons#13-#23
WRS-2224: Directions & Applications page 6 lighting controls
Allows specifying which type(s) of switching hardware can be connected to each group switch input.
The default switch type for all inputs is the Douglas WR-8501 with Led Indicators. This configuration is compatible with all models of Douglas relay switches, relay time clocks and photo cells and no re-configuration is necessary for those devices.
However, if you will be connecting any different switch type(s) to an input, follow this procedure. Flick
WarnLED
Normal ModeSelect Button
InputSelect Button
InputLEDs
Options ModeSelect Button
Rectified AC Pulse.Current for Indicator LEDs.NOTE: Non-LED switches are also compatible with this configuration.Rectified AC Pulse.No current for Indicator LEDs.NOTE: LED switches will not function properly with this configuration.
AC Maintained Contact.
AC Momentary Contact. (14) - OFF when switched
(15) - OPEN=OFF / CLOSED=ON
(16) - OPEN=ON / CLOSED=OFF
(17) - OPEN=no action / CLOSED=ON
(18) - OPEN=no action / CLOSED=OFF
(19) - OPEN=ON / CLOSED=no action
(20) - OPEN=OFF / CLOSED=no action
(21) - Positive=OFF / Negative=ON
(22) - Positive=ON / Negative=OFF
(23) - Positive=OFF / Negative=ON
Output Button Pressed
Output LEDs#13-#23
DOUGLAS
PROGRAM MODEAllows output relays to be grouped, with each group controlled by a switch input.
To Use Program Mode:
NOTE:
Setup: Program Mode
WRS-2224: Directions & Applications page 7 lighting controls
Output Buttons
Output LEDs
Program Mode Select Button
ON Override Select Button
OFF Override Select Button
Input Select Button
Input Terminals
Input LEDs
1. Make sure the output relays are properly connected to the output terminals and that the group switches and/or timer outputs are properly connected to the input terminals.
2. Make sure NORMAL MODE is selected. The top indicator LED of the NORMAL MODE select button should be ON.
3. Use the INPUT SELECT button to scroll to the desired input #1-5 (when its indicator INPUT LED is ON).
4. Press the PROGRAM MODE select button. Its indicator light will begin flashing. The OUTPUT LEDs of the relays that are controlled by the selected input will be ON.
5. Add or remove output relays from the selected input by pressing the OUTPUT button of the desired relay.
6. When you have selected all the relays for the group, press the NORMAL MODE select button to return to NORMAL mode.
7. Repeat steps #3 - 6 to program other inputs with a relay group. NOTE: A relay can be in more than one group.
8. When you are programming a relay group, you can include or exclude all the output relays by pressing the ON OVERRIDE or OFF OVERRIDE button, respectively.
9. When you are in NORMAL mode, you can turn all the relays assigned to an input ON or OFF by selecting that input with the INPUT SELECT button, and then pressing the ON OVERRIDE or OFF OVERRIDE button.
If there is 2 minutes of inactivity during PROGRAM mode, the scanner will revert to NORMAL mode.
To return to PROGRAM mode, press the PROGRAM MODE selectbutton.
Normal Mode Select Button
DOUGLAS
FLICK WARN OPTION
To Assign the Flick Warn Option:
6
OFF Signal
3
12
9
OFF
FLICK WARN Sequence
Lights flash towarn of OFF
PM1
Sw
Occupant has 5 minutes to cancel OFF
If cancelled,lights stay ON
If not cancelled,lights go OFF
Setup: Flick Warn Option
2 3 4
Sw Sw Sw
Time OutLED
NOTE:
WRS-2224: Directions & Applications page 8 lighting controls
Allows any relay group to have the FLICK WARN feature.
FLICK WARN warns occupants that the lights will be switched OFF in 5 minutes.
Occupants can cancel the OFF sweep for the local circuit by flicking the local switch. Or, they can cancel the OFF sweep for the entire group by pressing the group's input switch once.
1. Make sure the output relays are properly connected to the output terminals and that the group switches and/or timer outputs are properly connected to the input terminals.
2. Make sure NORMAL MODE is selected. Its top indicator LED should be ON.
3. Use the INPUT SELECT button to select the desired group #1-5 (when its indicator INPUT LED is ON).
4. Press the PROGRAM MODE select button. Its indicator LED will begin flashing. If you have not already done so, select the output relays that belong to that input's group.
5. Press the OPTIONS MODE select button once. The FLICK WARN indicator LED will turn on. (Pressing the OPTIONS MODE button will cycle the selections from FLICK WARN to TIME OUT to TIME OUT with FLICK WARN back to NO SELECTION.)
6. Return to NORMAL mode.
7. Repeat steps #3 - 6 to assign the FLICK WARN option to another group.
8. For any group assigned the FLICK WARN option, the FLICK WARN indicator LED will be ON whenever the group is selected and the FLICK/TIME-OUT ACTIVE LED will flash whenever the flick warning operation is occurring.
To De-Assign the Flick Warn Option: 1. Select the group (with INPUT SELECT).
2. Go to PROGRAM mode.
3. Press the OPTIONS button (usually 3 times) so that both the FLICK WARN LED and TIME OUT LED are OFF.
4. Return to NORMAL mode.
Assigning the FLICK WARN option to a relay group that controls any HID lighting is NOT RECOMMENDED.
(HID lights require more than 5 minutes to turn ON after being turned OFF.)
Flick WarnLED
Output ModeSelect Button
Program ModeSelect Button
Flick/Time OutActive LED
Normal ModeSelect Button
InputSelect Button
InputLEDs
DOUGLAS
To Assign the Time Out Option:
TIME OUT OPTION
TIME OUT modeenabled at start of
closed hours
12
3
6
9PM
Light turned ON with wall switch:
timer starts
Exit withoutswitching OFF
Timer expires,lights switched OFF
SwSwSwSw
12
3
6
9AM
Sw
ModeChange
TIME OUT modedisabled at start of
business hours
�
Setup: Time Out Option
TIME OUT during Closed Hours1
2 3 45
OFF
Switches work normally (no TIME OUT) during
business hours
Sw
6
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4 5 6
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4 5 6
7 8 9
0
Time Clock
WRS-2224: Directions & Applications page 9 lighting controls
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IMPORTANT% � � � # � � � � � � � � � � � � � � � � � � # � � � & � � � � � � � � � � � � � � � � ! " � �# � � � � � � � � � � & � � ' ( � � � � � & � � � � � & � � not s� & � ) � � � � � � � � � � � � � � � � � $ � �� � � � � ' ( � � � � � & � � � � � & � � � � � * � � � � � � � � � � � ! " � � # � � � � � � � � � � �� � � � ' � ! + � � ' � ' & � � * � � � � � � � � � � � ! " � � # � � � � � � � � � � � � � � � ' � � # # $
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1. Make sure the output relays are properly connected to the output terminals and that the timer output is properly connected to the selected input terminal.
2. Make sure NORMAL MODE is selected. Its top indicator LED should be ON.
3. Use the INPUT SELECT button to select the designated group #1-5 (when its indicator INPUT LED is ON).
4. Press the PROGRAM MODE select button. Its indicator LED will begin flashing. If you have not already done so, select the output relays that belong to that input.
5. Press the OPTIONS MODE button until the TIME OUT indicator LED turns ON. (Pressing the OPTIONS MODE button will cycle the selections from FLICK WARN to TIME OUT to TIME OUT with FLICK WARN back to NO SELECTION.)
6. If you want to assign the TIME OUT option with a FLICK WARN to the group, press the OPTIONS MODE button until both the TIME OUT and the FLICK WARN indicator LEDs are ON.
7. Return to NORMAL mode.
8. For the group assigned the TIME OUT option, the TIME OUT indicator LED will be ON whenever the group is selected, and the FLICK/TIME OUT ACTIVE LED will flash whenever the TIME OUT operation is occuring.
To De-Assign the Time Out Option:1. Select the group (with INPUT SELECT).
2. Go to PROGRAM mode.
3. Press the OPTIONS button so that both the TIME OUT and the FLICK WARN indicator LEDs are OFF.
4. Return to NORMAL mode.
Scanner InputWhen set in TIME OUT mode, the time clock enables TIME OUT with an ON signal and disables TIME OUT with an OFF signal. Relays that are assigned to the group are not switched. Only one group can be assigned the TIME OUT option. If
more than one group is assigned TIME OUT, those groups will not respond to input or override switch commands.
It will be necessary, in that case, to shut off and restart the Relay Scanner, and then re-program all of the input groups with only one all-inclusive group assigned TIME OUT.
NOTE:
Time OutLED
Flick WarnLED
Output ModeSelect Button
Program ModeSelect Button
Flick/Time OutActive LED
Normal ModeSelect Button
InputSelect Button
InputLEDs
DOUGLAS
Connections: Stand Alone Panels
WRS-2224: Directions & Applications page 10 lighting controls
WTP-4408
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� � � � �� � � � �
1 2 3
4 5 6
7 8 9
0
A B C D
Esc Clr1 2 3
4 5 6
7 8 9
0
3
5
7
9
11
114
16
18
20
22
24
13
15
17
19
21
23
2
4
6
8
10
12
ONOVERRIDE
OFFOVERRIDE
INPUTSE LECT
NORMALMODEOPTIONS
PGMMODE
WRS-2224RelayScanner
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101112
131415161718192021222324WB
Inputs
123B45B
Relays
Transformer
BW
24VAC
Relay Panel
W
24VACPower
1
2
3
4
5
6
NW Priv Office
NW Priv Office
NW Priv Office
Library
NW Priv Office
NW Priv Office
Group 1Relay # Lighting Circuit
Core
SWQuad
NWQuad
SEQuad
NEQuad
Sw
Time Clock
Relays
Office
Office
PhotoCopy
Hall
Hall
Mens
Core
White
Office
Sw
Office
Sw Sw
Office Floor -Reflected Ceiling Plan
Outputs
Office
Sw
Sw
Office Office Office
Library
Womens
Elevator
Office
OfficeOffice
Office
Storage
Office Office Office Office Office Office
Office
Office
Office
Office
Office
Office
Hall
Hall
Hall
Hall
SE Quadrant
NE Quadrant
Zones
Core
Core
Reception
Office
SW Quadrant
NW Quadrant
IndividualSwitches
GroupSwitchStation
NW Quadrant NE Quadrant
Core
SE QuadrantSW Quadrant
DOUGLAS
Connections: Stand Alone Panels
WRS-2224: Directions & Applications page 11 lighting controls
Simple Stand Alone Panels� � The WRS-2224 Programmable Relay Scanner permits a group of relays to
be controlled with a single switch. The scanner can support up to 5 groups of relays, each controlled by one of 5 switch inputs.
� � In this example, the 24 output relays are divided into 4 groups, with each group controlling the lights in an area, or zone, of the Office. Group 1 controls the lights in the NW Quadrant (shaded area in Ceiling Plan). Group 2 controls the SW Quadrant, Group 3 the NE Quadrant and Group 4 the SE Quadrant. The Core circuits are controlled directly by a switch in the Group Switch Station.
� � Use the keypad built into the front of the scanner to assign the relay groups. Changes to relay groups are easy to accomplish with the keypad; no rewiring is necessary. In this example, Relays #1-6 are assigned to Group 1.
� � Install wall switches to provide for occupant override. They can be either individual wall switches connected directly to the relays or group switches connected to the scanner inputs.
In this example, Relays #1-6, which comprise Group 1, are each connected to a wall switch in a Private Office, as shown in the diagram on the previous page.
� � Another application, which can yield significant energy savings, is the use of the TIME OUT feature. During any period TIME OUT is activated, any lights in the designated TIME OUT group that are left on for 2 hours will be switched OFF automatically.
In this example, Group 5, to which all of the relays on the floor are assigned, is programmed for the TIME OUT option. TIME OUT will be activated and de-activated by the WTP-4408 Timer connected to Group 5's input terminal.
� � The scanner can be set to provide groups with FLICK WARN, in which the lights flick to warn occupants they will be automatically shut off in 5 minutes. Occupants can then cancel the OFF sweep by flicking the local switch or by pressing the group switch once.
In this example, each of Groups #1-4 is programmed for FLICK WARN which is to occur 5 minutes before the OFF sweep time designated for that group by the WTP-4408 Timer. Group #5 is programmed for the FLICK WARN along with the TIME OUT option, so its flick warning will occur with any lights left on 2 hours when TIME OUT is enabled.
DOUGLAS
Lights
Lights
Lights
Group Switch Station
Main Panel
IndividualOccupantSwitches
Sw
Sw
Sw
Lights
Lights
Lights
Sw1
Sw2
Sw3
Sw4
Sw5
Sw6
Sw7
Sw8
RlyLights
RlyLights
RlyLights
Rly
Rly
Rly
Rly
Rly
Lights
Lights
Lights
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
Rly
W
WB
12345678 WB
Sw
Sw
Rly
Rly
Rly
Rly
Lights
Lights
Lights
Rly
Rly
Rly
Rly
Rly
Lights
Lights
Lights
Rly
Rly
Rly
Rly
Rly
Sw
Sw
Rly
Rly
Rly
Rly
Lights
Lights
Lights
Rly
Rly
Rly
Rly
Rly
Lights
Lights
Lights
Rly
Rly
Rly
Rly
Rly
12345678
WB
WTP-4408
W12345678WB
SensorSensor
1 2 3
4 5 6
7 8 9
0
A B C D
Esc Clr1 2 3
4 5 6
7 8 9
0
Time Clock
Connections: Multiple Panels
� � In larger buildings, there often are several load centers that need to be controlled from one location.
� � A simple wiring strategy is to interconnect the relay panels with a multi-conductor bus. This method permits several building-wide controls to exist at each relay panel. Connect the relay panel's scanner inputs to the appropriate control wire of the bus.
� � Projects that are interconnected with a multi-conductor bus should use a separate transformer to supply the multi-conductor bus.
This is done so the power that switches the relays in each panel is isolated from the power used for the building-wide switching circuit. As all Douglas scanners have optically-isolated master switch inputs, the WRS-2224 Relay Scanner in the panel will isolate the power in the bus signal from the power used in the panel.
Tr
123
45
67
8WB24V
B
Tr
WRS-2224: Directions & Applications page 12 lighting controls
Sw
Sw
Rly
Rly
Rly
Rly
Lights
Lights
Lights
Rly
Rly
Rly
Rly
Rly
Lights
Lights
Lights
Rly
Rly
Rly
Rly
Rly
12345678 WB
WRS-2224Scanner
Tr
Multiple Relay Panels
Inter-Connected Panels� � A 10-conductor bus will provide eight master switch
controls that can be used in several panels.
� � Connect a master switch station and/or timer to the bus for override and automation.
GlobalTransformer
Remote Panel
Remote Panel
Nor mal Mode
Nor mal Mode
WRS-2224Scanner
WRS-2224Scanner
�or mal Mode
Nor mal Mode
Nor mal Mode
WRS-2224Scanner
WRS-2224Scanner
DOUGLAS
Connections: Multiple Panels
� � Another method of interconnecting load centers/relay panels is to use the Douglas WNX-2624 Network Node. With the WNX-2624 Node, you can network the WRS-2224 Programmable Relay Scanner with a non-polarized data signal to other WRS-2224 Relay Scanners.
� � Up to twenty-four WRS-2224/WNX-2624 scanner/node combinations can exist within a self-configured system.
� � In a self-configured system, the input of one scanner can control relays that are connected to any of the scanners that are a part of the system.
� � The WNX-2624 Network Node is LonMark compliant and can be integrated to be part of and to be controlled by another system.
WRS-2224: Directions & Applications page 13 lighting controls
Relay Scanner Networks
Relay Panel
R
RR
R
RR
R
RR
R
RelaysRR
24V
Scanner
Transformer
www .DouglasLIghtingControls.com
WRS-2224Relay Scanner
WNX-2624Network Node
Node
Remote Panels
DOUGLAS
Troubleshooting
Table 2. WRS-2224 Troubleshooting Guide
Problem Encountered Possible Cause(s)Defective output relay
- reset relays- if either relay is in another input group, remove it from that group
Corrective Action
Flashing output LED(s) during NORMAL mode 2 relays connected to same output
with one relay ON and the other OFF
External AC current leaking into circuit
WRS-2224 Troubleshooting Guide
- replace relay
- check wiring
Output relay(s) not tripping properly
Input(s) not configured when non-default input switching device(s) used
Relay(s) not included in input group
FLICK WARN not properly programmed
- configure input(s) per instructions on page 6
- use circuits with non-HID lighting
Relay(s) also part of another input group with contradictory input signals
- remove relay(s) from other group
- check programming, re-program if necessary
- check input configuration - check input switching device(s) and connections- check power source
Improper input voltage (must bebetween 22V and 30VAC)
FLICK WARN not working - check programming, re-program if necessary
HID lighting used in FLICK WARN group
TIME OUT not working Inappropriate input switching device used - make sure input is only ON during TIME OUT period- use timer as input instead of switch
Relay group not programmed properly - check programming, re-program if necessary
TIME OUT assigned to more than one group - assign TIME OUT only to one all-inclusive group
WRS-2224: Directions & Applications page 14 lighting controls
General Guidelines:� � Make sure that 24V power exists (always measure between 22V and
30VAC);
� � Make sure all inputs and outputs are tightly connected;
� � Make sure all relay groups are programmed correctly;
� � If non-default input switching devices are used, make sure all inputs are configured properly.
DOUGLAS
Appendix A - Input/Output Log
Input Input Switches Output Relays
1.
Type Remarks # Remarks # Remarks
2.
Type Remarks # Remarks # Remarks
3.
Type Remarks # Remarks # Remarks
4.
Type Remarks # Remarks # Remarks
5.
Type Remarks # Remarks # Remarks
Date
Additional Remarks:
WRS-2224: Directions & Applications page 15 lighting controlsDOUGLAS
Notes
WRS-2224: Directions & Applications page 16 lighting controlsDOUGLAS
Notes
WRS-2224: Directions & Applications page 17 lighting controlsDOUGLAS
www.DouglasLightingControls.com4455 Juneau Street • Burnaby, B.C. • CANADAphone: (604) 873-2797 • fax: (604) 873-6939
WARRANTY
DOUGLAS lighting controls reserves the right to cancel orchange items shown in this publication without notice.
DOUGLAS products are warranted for one year from the date of purchase by the consumer against defects due to materials and the company's worksmanship only. The sole obligation hereunder shall be to repair, or at the company's option to replace, products as aforesaid, provided same are returned, upon authorization, 'Transportation Prepaid' to the company's Burnaby, CANADA office within the said period. Defects or failures due to improper or careless installation, storage or handling, or usage other than rated conditions, are specifically excluded from this warranty. No liability is accepted for return transportation charges following repair or replacement as aforesaid or for reinstallation costs. No other liability of any nature or kind, whether arising out of or from the use of the product, whether or not defective, is assumed.
DOUGLASlighting controls
R