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LY SeriesLong-Term Reliability and
Innovative Design Features inQuarter-Turn Valve Actuators
Limitorque Actuation Systems
LY Series quarter-turn
valve actuators meet
an increasing need
for high-quality
valve control.
Flow Control Division
Limitorque Actuation Systems
L imi to
rque0 50 100
LY actuators offer new economies and increased
power and/or control options, plus all the innovative
features that have made Limitorque the brand of
choice all over the world. These quality actuators
have all the basic design features of other units
manufactured by Limitorque.
Count on the LY Series to meet the
most demanding specifications and to
perform as expected
for years to come.
Torque ratings range
from 200 to 1200 ft.
lbs. (270 to 1625
Nm) for application
versatility that
includes submersible,
weatherproof, or
explosionproof enclosures. Compact components and
space-efficient profiles provide durability and
handling benefits. Modular design uses standardized
components to reduce manufacturing costs and to
simplify installation and service. Torque switches are
interchangeable between LY 1001, LY 2001, and LY
3001, double acting and fully adjustable. Optional
controls include printed circuit board and plug-in
modules. Up to 16 adjustable limit switch contacts
are available.
Flow Control Division
Limitorque Actuation Systems
Specify LY Series wherever precise valve control is required.LY Series actuators suit a wide range of applications requiring precise torque and limitcontrol. They can be relied upon to perform dayafter day, year after year, under the mostdemanding conditions. Units are suitable forweatherproof, submersible, and explosionproofenvironments and are available for single orthree-phase power requirements.
These versatile actuators provide cost-efficientposition control of a variety of different valves.This includes butterfly, ball, and plug valves, aswell as dampers.
The LY Series is especially useful for intelligent control system applications. Printedcircuit boards, plug-in modules, and up to 16effective switch contacts provide an abundanceof possibilities for functions and networking.
When it is used with UEC-3 modulating controlpackages, precise control can be achieved.
A Distributed Digital Control network can control up to 250 actuators and devices using asingle twisted-pair or duplex fiber optic cable.Cabling cost reductions, redundancy, and faultreporting enhance the economy and utility ofthis approach.
Limitorque actuators can be controlled by amaster station or directly via standard Modbusprotocols using a third-party PLC or DCS.
4
Flow Control Division
Limitorque Actuation Systems
RS-232
RS-232
I/O
OptionalMasterStation
LIMITORQUE
LIMITORQUE
LIMITORQUE
LIMITORQUE
LIMITORQUE
LIMITORQUE
These LY 1001 actuators are serving as part of a DDC-100 control network in the harsh, corrosiveenvironment of an automated, offshore well head.(Control compartments are mounted on the top ofthese units for easier accessibility.)
In many instances, Limitorque distributed digitalcontrol networks allow you to connect actuators andother field units directly to the network host—savingthe cost and complexity of a separate master station.
Minimize maintenance and servicerequirements.Superior engineering, the highest constructionstandards in the world, and innovative designfeatures are responsible for the low-maintenancerequirements and long-term reliability of the LYSeries.
Design features like the pre-wired terminalblocks and separate drive nut adapters greatlysimplify installation. Simple, modular designfacilitates what little routine maintenance may berequired.
These exceptional units can be counted on formany years of trouble-free operation because ofquality features like o-ring seals, corrosion-resistant hardware, durable epoxy coating*, andanti-condensation heaters. Should a unit requireservice, there is ready availability of Limitorqueparts and factory-authorized service from locations around the world.
Limitorque also offers a variety of trainingoptions for maintenance personnel either atLimitorque facilities or customers’ sites.
*Other finishes available, contact Limitorque.
Control packages incorporate modular componentsand pre-wired terminal strips to facilitate fieldinstallation. Plug-in modules easily accommodateadditional functions. The metal compartment isepoxy-coated* and O-ring-sealed. Mountingbrackets and hardware are corrosion-resistant toprovide years of service-free operation.
Installation, maintenance, and service arefacilitated by LY Series design features like thisremovable torque drive nut that provides an easyinterface between actuator and valve. Otherstandard components capitalize on the cost-efficiency of modularity and partsinterchangeability.
5
Flow Control Division
Limitorque Actuation Systems
Designed and built for reliable, cost-effective valve control.
LY Series actuators are created following the highest of quality standards. Units meet all AWWA 504-87 and 540-87requirements. Standard features such as steel-on-bronzeworm gear sets, anti-friction bearings throughout, and adurable epoxy coating* meet high-performance criteria.
Other important features include mechanical adjustablestops for 90° rotation with ±10° adjustment. Declutchlevers allow handwheel operation. Motors have class-Finsulation and two thermal contacts rated at 125°C. Controlcompartment heaters prevent corrosion damage due tomoisture caused by condensation. Dial position indicatorsprovide local monitoring of valve position.
Flow Control Division
Limitorque Actuation Systems
LY-1001with optional Modutronic 20 control package
Integral controls withprinted circuit board andplug-in modules provideflexibility and reduceinstallation and servicecosts. Mounting bracketsand hardware are corrosionresistant.
Torque drive nut isremoveable. This separate nut simplifies machining,installation, and service. One size drive nut fits theLY-1001 unit; a secondsize nut fits both the LY-2001 and LY-3001 models.
6
Steel-on-bronze worm gearset maximizes powertransmission efficiency ofthe self-locking gear train.Double-reduction,hardened steel worm andhigh-strength bronze gearrepresent the level ofquality found in allLimitorque actuators.
*Other finishes available, contact Limitorque.
Flow Control Division
Limitorque Actuation Systems
LY-1001 with top-mounted integral
cover for optional controls
LY-2001
Coating is a combination of high-solids epoxyelectrostatically appliedand epoxy topcoat*. Finishmeets Nema 4X to testmethod ASTM B117requirements for salt sprayexposure. Hexavalentchromate finishing isapplied to interior sections.The combination coatingserves as a primer if adifferent coating is required.
Terminal strips simplify field connections. Allelectrical components are pre-wired to the terminalstrips to facilitateinstallation.
Limit switches areindependently adjustable.The standard units include8 SPDT limit switches.
Torque switches providecontrol of output torque and protect valve andactuator from mechanicaloverload in either direction.Switches are fullyadjustable andinterchangeable between all LY models.
7
Conduit entries provideconvenient openings toroute wiring and facilitateinstallation. Two one-inchNPT openings canaccommodate a wide range of cable requirements.
*Other finishes available, contact Limitorque.
Flow Control Division
Limitorque Actuation Systems
A wide range of options are available.Limitorque provides a full range of options and custom modifications, including torque ratings, operating times, and rotary motion.Single actuators can be equipped to respond within precise parameters for sophisticated process control. Cost-efficient network applica-tions can include Limitorque components that are designed and manufactured especially for integration into a direct-to-host or optionalmaster station system. Below are some of these options:
Modutronic™ position control packages allow more precise valveposition control than is possible with basic integral control. Thesepackages are useful as part of an integrated system requiringresponse by degrees for sophisticated process control. From sim-ple positioning of a valve to sophisticated microprocessor control,Modutronic control packages offer a full range of options.
DDC-100 distributed digital control systems provide a fully integrated, microprocessor-based network to control and monitorvalve actuators and other devices. Network intelligence is distrib-uted over a shielded twisted-pair. An LY Series actuator isconnected to a digital network by installing a plug-in printed circuit board in the integral control package. Control capabilitiesresident within the LY can be significantly expanded with the addi-tion of the optional UEC-3 module.
Selector switches and LEDs provide local control. These are available with or without integral controls.
Potentiometers allow precise, continuousindication of valve position at a remotelocation. Coupled with an R/I converter(shown above), potentiometers provide aneconomical 4-20 milliamp position feed-back signal for remote indication. Bothsingle and dual feedback options include50 or 1000 ohm ratings.
Optional double pole, double throw limitswitch assembly provides a total of 16effective limit switch contacts. The addi-tional contacts allow external indication oflimit switch travel and trip.
8
General SpecificationsOperating time Open/Close Maximum bore Modulating Modulating(sec.) Maximum keyway (width x depth) torque torque
output torque 100 starts/hr 600 starts/hr60 Hz. 50Hz. Ft.-Lbs. Nm inches mm Ft.-Lbs. Nm Ft.-Lbs. Nm
LY-1001 15 18 200 270 N/A N/A N/A N/A30 36 200 270 150 204 100 13560 72 200 270 150 204 100 135
LY-2001 15 18 600 810 N/A N/A N/A N/A30 36 600 810 450 611 300 40760 72 600 810 450 611 300 407
LY-3001 20 24 1200 1625 N/A N/A N/A N/A30 36 1200 1625 900 1221 600 814 60 72 1200 1625 900 1221 600 814
Operating Handwheel Handwheel Handwheel Rimpull required (lb.) totime diameter ratio efficiency obtain full rated torque(sec.) Inches mm lb/kg 1:1 lb/kg 2.79:1 SGA
LY-1001 15 6 152 32:1 0.36 70/32 N/A30 6 152 32:1 0.36 70/32 N/A60 6 152 44:1 0.36 70/32 N/A
LY-2001 15 12 305 32:1 0.36 100/45 40/1830 12 305 32:1 0.36 100/45 40/1860 12 305 32:1 0.36 100/45 40/18
LY-3001 20 12 305 89.3:1 0.33 N/A 80/3630 12 305 89.3:1 0.33 N/A 80/3660 12 305 89.3:1 0.33 N/A 80/36
WeightsUnit type Controls lbs. kgLY-1001 NCU 40 20
BIC 75 34UEC 90 41
LY-2001 NCU 100 45BIC 110 50UEC 144 65
LY-3001 NCU 105 48BIC 130 59UEC 149 68
1 1/8 dia. 28 dia.1/4 X 1/8 6 X 3
2 3/8 dia. 60 dia.5/8 X 5/16 15 X 7.5
2 3/8 dia. 60 dia.5/8 X 5/16 15 X 7.5
9
Flow Control Division
Limitorque Actuation Systems
ControlsNCU – No Controls Unit, for connection to motor control center, orPLC supplied by others.
BIC – Basic Integral Controls unit, includes integrated reversingcontactor and hardwired torque and limit switch interlocks.
UEC – Universal Electronic Controller, includes BIC functionalityplus advanced diagnostics and function configurability, supportsoptional Modulating Position Control (MPC), and optionalDistributed Digital Control (DDC) for field networks.
EnclosuresWP units – suitable for NEMA 4, NEMA 4X.
XP units (NCU) – suitable for Class I, Groups B, C, & D, Div. 1 & 2service and Class II, Groups E, F, & G.
XP units (LY-1 BIC & LY-1, 2, & 3 UEC, MPC, DDC) – suitable forClass I, Group C and D, Div. 1 & 2 service and Class II, Groups E,F, & G.
Standard Temperature Range-20˚F to +150˚F (-29˚C to +65˚C)
Dimensions for LY-1001 for NCU 1PH and 3PH
10
Flow Control Division
Limitorque Actuation Systems
2.5(63.5)
Top ofStem Nut
Max
. Ste
m1.
125
Dia.
with
1/4
Sq.
Key
(28.
58)
Front View Top View
4.5(114.30)
3.2(81.28)
1.9 (48.26)
H.W.
DriveSleeve
Declutch Lever
PositionIndicator
PERCENT OPEN
050
100
C.W.
7.2 (182.88)
B
9.3(236.22)
C.W.
CL
CL
DriveSleeve
CL
3.00 Dia.C`Bore(76.20)
4.016 Dia. B.C.(102.01)
4.92 Dia.(124.97)
3/8-16 Thd.X .71 DP.(8) Holes onCenterline
(2) AdjustableMechanicalStops (Farside)
1" NPT(2) Places(25.4)
.94(23.88)
1.85(46.99)
3.4(86.36)
Space for Cover Removal
H.W.
2.6(66.04)
6.0
Dia.
(152
.4)
MountingBase
.05DeclutchLever(1.27)
5.0(127.00)
B
13.8
(350
.52)
9.8(248.92)
CL
Side View
Dimensions for LY-1001 unit with control compartment for UEC-3, MPC, DDC, 1PH and 3PH
11
Flow Control Division
Limitorque Actuation Systems
Flow Control Division
Limitorque Actuation Systems
Dimensions for LY-1001 unit with top-mounted control compartment for BIC 1PH and 3PH, and Modutronic 20 II
H.W.
C.W.
1" NPT(2) Places(Farside)(25.4)
2.2(55.88)
2.2(55.88)
2.7(68.58)
ARROWIN
DICATESOPENDIRECTION
PERCENT
OPEN
Declutch Lever
7.1(180.34)
Position Indicator
18.6(472.44)18.1(459.74)
DriveSleeve
CL
CL
4.016Dia. B.C.(102.00)
4.92 Dia.(124.97)
3/8-16 Thread X .71 DP.(8) Holes on centerlineDeclutch
Lever(2) AdjustableMechanicalStops (Farside)
1" NPT(2 PLACES)(25.4)
H.W.
2.6(66.04)
6.0
Dia.
(152
.40)
Mounting Base
.05(1.27)
19.0
R. S
win
gCl
eara
nce
(482
.60)
1.85(46.99)
.94(23.88)
9.7(246.38)
8.6(218.44)
14.2(360.68)
B
A
A
CL
CL
DriveSleeveTop of
StemNut
2.5(63.50)
Max
. Ste
m1.
125
Diam
eter
(58.
58) w
ith1/
4 Sq
. Key
(6.3
5)
DriveSleeve
CL
10.5(266.70)
6.3(160.02)
Pushbutton stationcontrol elements, seewiring diagram for thequantity and function.
B
B
Front View Top View
Side View
DriveSleeve
CL
12
Flow Control Division
Limitorque Actuation Systems
Dimensions for LY-2001 unit for BIC 3PH and BIC 1PH up to 2'# motor
13
Flow Control Division
Limitorque Actuation Systems
Dimensions for LY-2001 unit for BIC 1PH, 3'# motors and larger, Modutronic options
Front View Top View
Side View
(2) adjustablemechanicalstops
2.375 dia.with 5/8"sq. key
top ofstem nut
max stem
Pushbuttonstationcontrol elements.See wiringdiagram for thequantity andfunction.mounting
base
12.2
3.9
1.7
5.0
050
100
PERCENT OPEN
Limitorque
Cdrivesleeve
drivesleeve
H.W.
C.W.
positionindicator
C.W.
3.1
6.5
C
C
10.7
8.4
3.9
4.1
11.9
8.9
5.1
max
19.0swingradius
6.2
17.2
5.512 diameter B.C.
1" NPT(2 places)
5/8-11 thd. X 1.26deep (8) holeson centerline
space forcoverremoval
H.W.
declutchlever
5.0
15.1
4.45 dia.c’bore
6.89 diameter
C
12.0
mounting base
4.15.8
7.8
1 1/4" NPT(2) placesfarside
B
(127.00)
(309.88)
(43.18)
(99.06)
(436
.88)
(129
.54)
(302.26)
(226.06)
(165.10)
(104.14)
(99.06)
(213.36)
(127
.00)
(198.12)
(147.32)(104.14)
.5 (12.70)
(383
.54)
(25.
40)
(113.03)
(140.00)
(175.01)
(25.4)
(78.74)
14
Flow Control Division
Limitorque Actuation Systems
Dimensions for LY-3001 unit for BIC 3PH
15
16
Flow Control Division
Limitorque Actuation Systems
Dimensions for LY-3001 unit for UEC-3, MPC, DDC 1PH and 3PH, BIC (Clamshell) 1PH and Modutronic options
050
100
PERCENT OPEN
1" NP T(2 places)(25.4)
5/8-11 Thd. X 1.26 Deep(8) holes on centerline
H.W.
DeclutchLever
Spac
e fo
rco
ver
rem
oval
DeclutchLever
DriveSleeve
H.W.
C.W.
PositionIndicator
(2) AdjustableMechanicalStop
C.W.
Top ofStem Nu t
4.1(104.14)
Pushbuttonstationcontrolelements.Wiring diagramfor quantityand function.
10. 7(271.78)
8.4(213.36)
3.1 (78.74)
6.2(157.48)
6.5(165.10)
3.9(99.06)
15. 2(386.08)
5.1
MA
X(1
29.5
4)5.
4(1
37.1
6)
19.0Swing Radius(482.60)
17.0
(431
.80)
5.0(127.00)
Max
Ste
m 2
.375
Dia
met
er(6
0.33
) with
5/8
" Sq.
Key
(15.
88)
Mou
ntin
gBa
se
12.2(309.88)
4.9(124.46)
1.7(43.18)
4.1(104.14)
5.8(147.32)
7.8(198.12) 1 1/4" NP T
(2) PlacesFar side(31.75)
4.45DiameterCore (113.03)
5.512 Dia. B.C.(140.00)
6.89 Dia.(175.01)
MountingBase
.5 (12.70)
12.0
(304
.80)
15.1
(383
.54)
1.1(27.94)
5.0
(127
.00)
8.9(226.06)
CL
CLDriveSleeve
CL
CL
Front View Top View
Side View
17
Flow Control Division
Limitorque Actuation Systems
Wiring diagram for LY NCU (Non-Control Unit), Single-Phase motor
Drawing No. 17-499-0105-3
18
Flow Control Division
Limitorque Actuation Systems
Wiring Diagram for LY NCU (Non-Control Unit), Three-Phase motor
Schematic Physical Arrangement
45
7
9
123
PUR/WHTRED/BLK
BRN
ORG
PUR
AUX.TERM.
1
2
3
4
1
2
3
41BLU
YEL
BRN
ORG
GRY
PNK
2
3
4
5
6
8
9
12
16
17
18
19
20
21
22
23
OPEN CIRCUIT
CLOSE CIRCUIT
LIGHTS
123
BLK
BLU
YEL
GRNRED
BRN
GRY
PNK
ORG
BLU/WHTYEL/WHT
HTR
CLOSE
OPEN
TS18BLU/RED BLU/BLK
TS17YEL/RED YEL/BLK
RED
YEL/RED
ORG
BLK
YEL
PUR
BRN
GRN
PNK
BLK
BLU/REDBLU
LIMIT SWITCH
BOTTOM
LS7
LS4
LS8
LS5
LS9
LS6
BLU/WHT
RED/BLK
LS3
LS2TOP
TORQUESWITCHES
15
13
24
14
PUR/WHT
YEL/WHT
BLKGRN
YEL/BLKBLU
BLU/BLK
BLKGRN
BLU
YEL YELRED RED
PNK
PUR
1011121314
PNK
1BLKWHT
2WHTBLK
BLK
P2
T2TH.OL
T1
(P) (P)
P1
ORG
PUR
BRN
T1T2T3
YEL/BLK
BLU/BLK
PUR/WHT
RED/BLK
YEL/WHT
BLU/WHT
PUR
P2
BLK
WHT
PUR/WHT
YEL/WHTRED/BLK
PNK
PUR
BLK
BLK/WHT
RED/WHT
THERMAL OVERLOAD
WHT
BLK/WHT
YEL
PUR
OPEN/CLOSE IND. COM
BLK 12
1
56
BLK/WHTRED/WHT 1
2
TO MOTORPOWERSOURCE
T3
3phMOTOR
FOR SIGNALCONVERTERWHEN SUPPLIED
PLUGS FORINTEGRALSTARTERTT
HTR
2 YELLOWRED
YELLOW YELLOWBLACK
BLUERED
1
RED
GREEN
BLUE
WHITE
LS9
LS4 TS18
TS17LS8
LS5
BLACK
23
24
5
6
TH.OL(P2) (P1)11 12
9
PUR ORGLS7 2221
PNK BRNLS6 2019
YEL/WHT BLU/WHTLS3 1817
PUR/WHT RED/BLKLS2 1615
GRAYAA
PINK
HEATERAA
SPARE LIMIT SWITCH
SPARE LIMIT SWITCH
OPEN CIRCUIT
CLOSE CIRCUIT
THERMAL OVERLOADS
10
INDICATIONAA
BLUEBLACK
SPARE LIMIT SWITCH
SPARE LIMIT SWITCH
8 BLACK
3phMOTOR
T2
T1
T3
FULLOPEN
FULLCLOSE FUNCTION
678
SPARE
IND LIGHTCLOSED LIMIT
OPEN LIMIT
SPARE
9
5 IND LIGHT4
OPENING TORQUE SWITCH INTERRUPTS CONTROL CIRCUITIF MECHANICAL OVERLOAD OCCURS DURING OPENING CYCLE
CLOSING TORQUE SWITCH INTERRUPTS CONTROL CIRCUITIF MECHANICAL OVERLOAD OCCURS DURING CLOSING CYCLE
TS18-
TS17-
23 SPARE
SPARE
BLUEYELLOWPURPLEBLACKORANGEBROWNWHITEREDGREENPINK
COLOR/STRIPED
: BLU: YEL
: BLK: ORG: BRN: WHT: RED: GRN: PNK: GRY
LIMIT SWITCH CONTACT DEVELOPMENTVALVE POSITION
1. OPEN CONTACT (CONTACT DEVELOPMENT)2. CLOSE CONTACT (CONTACT DEVELOPMENT)3. ALL LIMIT SWITCH TRIP POINTS ARE FULLY ADJUSTABLE.
TH.OL-THERMAL OVERLOAD CONTACTSHTR-SPACE HEATER
OPEN INDICATION
CLOSE INDICATION
HEATER
SPARELIMITSWITCH#2
SPARELIMITSWITCH#3
SPARELIMITSWITCH#6
SPARELIMITSWITCH#7
CLOSE CIRCUIT
OPEN CIRCUIT
ORG
YEL/BLK
BLU/BLK
BRN
BLU/WHT
BUTTONS
LIMITCONTACTSWITCH
PUR
GRAY
Electrical Compartment
Legend
Notes
Valve Shown In Full Position
Wire Color Legend
Drawing No. 17-499-0112-3
19
Flow Control Division
Limitorque Actuation Systems
Wiring Diagram for LY BIC (Basic Integral Control), Single-Phase Motor
Drawing No. 17-499-0080-3
20
Flow Control Division
Limitorque Actuation Systems
Wiring Diagram for LY BIC (Basic Integral Control), Three-Phase Motor
18V
BLU/WHTYEL/W
HT
C
O
YEL
PUR
BLU
BLU\BLK
YEL/BLK
PUR
RED
BLK
PURYEL
R G
PB3PB2P
PB1N
LOCALOFF
E
BRNPUR
GRYPNK
YEL
ORG
RED
REDBRN
WHT GRN
BUTTONS
AUX.TERM.
1
4
3
41
BLU
YEL
BRN
ORG
GRY
K
3
5
6
7
8
9
10
11
12
16
17
18
19
20
21
22
23
SW323PUSHBUTTON STATT TIOAA N
BLK
BLU
YEL
GRNREDWHT
HTR1
CLOSE
OPEN
BLU/RED BLU/BLK
TS17YEL/RED YEL/BLK
RED
YEL/RED
ORG
BLK
YEL
PUR
BRN
GRN
PN
BLK
BLU/REDBLU
Limit Switch
BOTTOM
LS7
LS4
LS8
LS9
LS6
BLU/WHT
RED/BLK
LS3
LS2
TOP
TORQUESWITCHES
15
13
24
14
PUR/WHT
YEL/WHT
K
BLKGRN
BLU/BLK
RED
PNK
1BLKWHT
2KBLK
ARTERA
T2
TH.OL
P2
(P) (P) T3
RES
ORG
PUR
L1L2L3
YEL/BLK
BLU/BLK
PUR/WHT
RED/BLK
YEL/WHT
PUR
P2
T
PNK
PURBRN
ORG
INCOMINGPOWER
BLK
BLK
T
P1 BLK/WHT
BLK/WHT
RED/WHT
BLK
BLU
FUSE1
BLU
21
BLK/WHTRED/WHT
3
2
5
6
1
1 BLK2 WHT
4
BLK
WHT
L1
L3
T3
T2
T1
L3
L2
L1 T1
T2
T3
L2
BLK/WHT
L1 L2
H1 H3 H2 H4
T1
P1
3phMOTOR
BLK/WHT
FUSE
FUSE
BLK
1
BLK/WHT
PUR
2
R
G
PB1OPEN
PB2STOP
PB3CLOSE
LOCAL REMOTE O
CO
C
O
C
TH.OL
SSOFF
HTR1
HTR2
OPEN
STOP4
2CLOSE
3
COMMON
YELLOWRED
YELLOW
BLUE
YELLOW
BLUEWHITE
YELLOWWHITE
BROWN
BLUE/BLACK
BROWNRED
RED
RED
BLUERED
P1
PURPLE
BLACK
BLACK
1
RED
6
5
REMOTE INDGRAYAA
REMOTE IND
WHITE
BROWN
ORANGE
GRAY
PINK
BLUE BLUE LS4 TS18
TS17LS8
LS5
WHITE
BLACK
BLACK
RES
RES
24
23
10/11 12
P2
7
BLACK/WHITE
PUR ORGLS7 2221
PNK BRNLS6 2019
YELLOWWHITE
BLUEWHITE
1817
RED 1615SPARELIMIT
S
CPT
(H1)(H3) (H2)
(H4)
O
O
T1
3phMOTOR
L1
O
C
C
C
T2
T3
L2
L3
WHI
TE
YELL
OWBL
UE
BLUE
18V18V115V
WHITE
FUSE
FUSE
BLACK
230V
H2 & H4 TO L2
TRANSFORMER TYPES
600
550--
32
460VH3 TO H2, H1 TOL1 & H4 TO L2
,,
FUSE
RED
8/9
PURPLE
ANDARDA
FULLCLOSE
6789
54
OPENING TORQUE SWITCH INTERRUPTS CONTROL CIRCUITIF MECHANICAL OVERLOAD OCCURS DURING OPENING CYCLE
CLOSING TORQUE SWITCH INTERRUPTS CONTROL CIRCUITIF MECHANICAL OVERLOAD OCCURS DURING CLOSING CYCLE
TS18-
TS17-
2
+-MECHANICAL INTERLOCK
RG
LIMITSWITCH
CONTACT
LIMIT SWITCH CONTACT DEVELOPMENTVALVE POSITION
FULLOPEN
FUNCTION
SPARESPAREOPEN LIMITIND LIGHTSPARESPARECLOSED LIMITIND LIGHT
1. OPEN CONTACT2. CLOSE CONTACT3. ALL LIMIT SWITCH TRIP POINTS ARE FULLY ADJUSTABLE.
OPEN CONTACTCLOSE CONTACTOPENING COILCLOSING COIL
CPT-CONTROL POWER TRANSFORMERTH.OL-THERMAL OVERLOAD CONTACTSS-SELECTOR SWITCH (LOCAL-OFF-REMOTE)PB1-OPEN PUSHBUTTONPB2-STOP PUSHBUTTONPB3-CLOSE PUSHBUTTONHTR1-SPACE HEATERHTR2-SPACE HEATER (SIDE MOUNTED COMPT. ONLY) RED INDICATING LIGHT GREEN INDICATING LIGHTRES-LAMP RESISTORS
BLUEYELLOWPURPLEBLACKORANGEBROWNWHITEREDGREENPINKGRAYCOLOR/STRIPED
: BLU: YEL: PUR: BLK: ORG: BRN: WHT: RED: GRN: PNK: GRY
Wire Color Legend
FOR SIGNALCONVERTERWHEN SUPPLIED
SPARELIMITSWITCH#2
SPARELIMITSWITCH#3
SPARELIMITSWITCH#6
SPARELIMITSWITCH#7
BRN
GRY
PNK
ORG
BRN
GRY
PNK
ORG
BRN
REMOTE OPEN
REMOTE CLOSE
REMOTE STOP
REMOTE COMMON
SELECTOR SWITCH INREMOTE INDICATION
HTR2
SUPPLIED ONSIDE MOUNTED
COMPARTMENT
TAPS
Notes
Valve Shown In Full CCW Position
Schematic
Legend
Drawing No. 17-499-0086-3
21
Flow Control Division
Limitorque Actuation Systems
Wiring Diagram for LY Three-Phase with UEC-3
Drawing No. 74-503-0099
22
Flow Control Division
Limitorque Actuation Systems
Wiring Diagram for LY Single-Phase with UEC-3-DDC
Legend
2
3
4
5
6
7
8
9
N.C. (NORMALLY CLOSED)N.O. (NORMALLY OPEN)COMMON
121
23
45
67
89
1011
Terminal Strip
GN/YL
(L1) RD
(L2) BL
T3
T2
T1
(10-2) RD
(10-1) RD H1
GREE
N (S
EE N
OTE
3)
H2
H1
H2
Gear Limit Switch 8 SPDT Contacts
Electrical Compartment SchematicValve Shown In Full CCW PositionCLOSE CONTACTOPEN CONTACT
18
17 CW TORQUE SWITCH INTERRUPTS CONTROL CIRCUIT IFMECHANICAL OVERLOAD OCCURS DURING CW CYCLE
CCW TORQUE SWITCH INTERRUPTS CONTROL CIRCUIT IFMECHANICAL OVERLOAD OCCURS DURING CCW CYCLE
ALL LIMIT SWITCH TRIP POINTS ARE FULLY ADJUSTABLE
Notes
CCW :COUNTER (ANTI) CLOCKWISE CONTACTCW :COUNTER CLOCKWISE CONTACT
:COUNTER (ANTI) CLOCKWISE COIL+ :MECHANICAL INTERLOCK
:COUNTER CLOCKWISE COILCPT :CONTROL POWER TRANSFORMER
:RED INDICATING LIGHT:GREEN INDICATING LIGHT
SS :SELECTOR SWITCH(LOCAL-OFF-REMOTE)
PB1 :OPEN PUSHBUTTONPB2 :STOP PUSHBUTTONPB3 :CLOSE PUSHBUTTON
:LIMIT SWITCH NORMALLY OPEN:LIMIT SWITCH HELD CLOSED:TORQUE SWITCH NORMALLY CLOSED
MTC :MOTOR THERMAL CONTACTSHTR_ :SPACE HEATERCAP :CAPACITORFS1 :FUSE 250mA 600VFS2 :FUSE 250mA 600VFS3 :FUSE 1A 250VFS4 :FUSE 1A 250VCR1 :CCW RELAYCR2 :CW RELAYCR3 :STOP RELAY (LOCKOUT)PD :PHASE DETECTORD_ :DIODER_ :RESISTOR :CPU POWER SUPPLY COMMOM :GROUNDING LUG
CCW
CW
RG
2BK/WH (6-31)
RD/WH
GY/WH (6-29)
PK (6-34)
BN (6-32)
WH (6-30)
RD/WH
RD/WH
RD/WH
RD/WH
CCW
/CW
LIM
ITSW
ITCH
ESTI
MER
INPU
T
RD/WH (6-38)
RD/WHRD (6-33)
CCW
CW
6
9
17
18
PR/WH (6-12) BK (6-11)
OR (6-14) BL/WH (6-13)
GN (6-16) YL (6-15)
PUR (6-18) BL (6-17)
YL/WH (6-20) GY (6-19)
LIM
IT S
WIT
CHES
NOT
AVA
ILAB
LEW
ITH
UEC-
DDC
TERM
INAT
ION
BOA
RD
3
4
5
7
8
CR1
CR2
FS2
FS1
CR1D8
CR2
D9
PD
A B C D
CAP
I/O20VCPU
110V
J12
J11
CW
CCWCW
CCW
J2
3
5
6
9
1
2 CCW
CW
J10
2
1
30 19 23 24 26 5020 25 45 46 49
PH D
ETEC
TOR
PH S
EQUE
NCE
15
CCW VERIFY
+24 VDC
CWVERIFIY
J2
J2
LOCKOUT COM.
24V DC
GND (24V)
RESERVED
0
1
2
5
1
2
3
4
5
6
1
2
3
4
5
6
TB1 TB2
CR3
D10
LK1
LOCKOUTRELAY
FS4+24V DC
CR3
CR3
3847 4846
24V COM
+24V DC
HTR2(2) H2
(1) H1
(SEE NOTE 1)
POWER BOARD
INTERCONNECT/FIELD NETWORK BOARD
FS3
4
3
2
1
16
3837
3747
48
CPT
LK1
LK2
LK3
LK4
3745 3149 50
LOCKOUT N/C
LOCKOUT N/O
4
3
20V
HTR1
(GRE
EN)
GN/YL
D-S
D-S*
RGN
DGN
D
D-M
D-M
*RG
ND
GND
TB3 TB4
CR3
24V
DC
INPU
TS
EARTHGROUND
TB5
MAX 6WOUTPUT
SINGLE
BOARD
COMPUTER
(SBC)
DAUGHTER
BOARD
J2
J4
J3
J4TXD -1CTS -2RXD -3RTS -4COM -5+5V -6
LOCALPORT
A1A1*
A2*
A2
NO CONNECTION
100 OHMRES
100 OHMRES
SEENOTE 2
NETWORKCABLE
NETWORKCABLE
24V
COM
+24V
DC
272829
CCWCW
PB1 OPEN
PB3 CLOSE
PB2 STOP LOCAL
OFF
REMOTE
SS
S3
S2
S1R101
R102
R
G
OPEN
CLOSE
7-4
7-11
7-10
7-1
7-13
7-2/6/8/14 (+24V DC)
7-3
SW-93 PUSHBUTTON STATION
J6
J7
38
4
26
37
4039
6
8
14
RD
RD
RD
YL
GN
BK
BN
GY
YL/RD
GN/RD
CCW S
POTENTIOMETER
BK (6-1)BN (6-2)
RD (6-3)
BL (6
-7)
VI (6
-8)
NOTUSED
(+)mA(-)mA
+
CW
P4
P5
P6
OR (6-4)
GN (6-6)
-
+24V
12 3
234
65
1
PT20SANALOGOUTPUT
1LK2 LK3
32
DCAC
123
24V COM
26252423 CAP
ANALOGINPUTINTERFACE
J3
13579
BKBNRDOR
GN
(3)(4)
4-20mAANALOGOUTPUT
GN
GN
(7) T2
(6) T1
1phMOTOR
CCW
MTC
TO CUSTOMER 1ph POWER SUPPLY
L2(11)
L1(10)
GND(12)
CW CAP
50/60 Hz ANDSUITABLE FOR |10%VOLTAGE VARIATION
VOLTS
TRANSFORMERTAPPING OPTIONS
TAP/LINK
575525220110
A - LK1B - LK2C - LK3D - LK4
(8) (T3)
RD
YL
BL
CW
CCW
(2) (2C)
(6) (6C)
(9) (9C)
(3C) (3)
(4C) (4)
(5C) (5)
(7C) (7)
(8)(8C)
4-20mA INPUTSFROM EXTERNALTRANSMITTER(SEE NOTE 3)
4321
98765
ANALOG INPUTINTERFACE BOARD
(+)(-)
10
FEEDBACKPOTENTIOMETER
(+)(-)
(S) P2
(CW) P3
(CCW) P1
1. REMOVE LINK LK1 ON INTERCONNECT/FIELD NETWORKBOARD TO ENABLE LOCKOUT FUNCTION.
2. IF GROUNDED CONTROL CIRCUIT IS UNDESIRED, USERMAY REMOVE JUMPER ON TERMINAL STRIP FROM
TERMINAL POINT 2 TO 12.3. DO NOT CONNECT ANALOG INPUTS COMMON TO
ANALOG OUTPUT COMMON. NOT FOR FIELD UNIT CONTROL.4. FOR FEATURE SELECTION REFER TO INSTRUCTION AND
MAINTENANCE MANUAL.5. CCW (COUNTER CLOCKWISE/ANTI-CLOCKWISE) OR CW
6. JUMPERS W1 AND W2 FACTORY INSTALLED TO 1-2FOR POTENTIOMETER FEEDBACK. (MOVE JUMPER ONAPPROPRIATE CHANNEL TO 2-3 IF 4-20mA FEEDBACK
(CLOCKWISE) ROTATION IS DEFINED AS THE ROTATIONOF THE OUTPUT SHAFT AS VIEWED FROM TOP OFACTUATED DEVICE.
NOT USEDNOT USEDNOT USED
NOT USEDNOT USEDTIMER LIMIT
FULLYCCW A B FULLY
CWCCW LIMIT
CW LIMIT
LIMIT SWITCH CONTACT DEVELOPMENTVALVE POSITION
FUNCTION
23456789
A BSWITCHNUMBER
(SEE NOTE 6)
6 W1POT mA
1 2 3
R150K5%
5
R2200OHM%1
W2POT mA
1 2 3
R350K5%
3
R4200OHM%1
4
(-mA) BN
(+mA) BK
4-20 OutputSEE NOTE 3
DIGI
TAL
CCW
/CW
TORQ
UESW
ITCH
ES
Drawing No. 74-503-0602
Flow Control Division
Limitorque Actuation Systems
Limitorque5114 Woodall Road, P.O. Box 11318Lynchburg, VA 24506-1318Phone (434) 528-4400, Fax (434) 845-9736http://www.limitorque.com
LimitorqueAbex RoadNewburyBerkshire, RG14 5EYEngland Phone 44-1-635-46999Fax 44-1-635-36034
Limitorque Nippon Gear Co., Ltd.Asahi-Seimei Bldg. 4th Floor1-11-11 Kita-Saiwai, Nishi-KuYokohama-Shi, (220-0004)JapanPhone 81-45-326-2065Fax 81-45-320-5962
Limitorque India, Ltd.302, Mansarovar 90 Nehru PlaceNew Delhi - 110019IndiaPhone 91-11-6431-748Fax 91-11-6432-749
Flowserve Australia Pty Ltd. 14 Dalemore DriveScoresby, Victoria 3179 Australia Phone 613-9729-2633Fax 613-9729-2644
Limitorque Asia, Pte., Ltd.12, Tuas Avenue 20Singapore 638824Phone 65-6868-4628Fax 65-6862-4940
150-10000 Rev. F 5/03© 2003 Flowserve Corporation, Irving, Texas, USA. Flowserve and Limitorque are registered trademarks of Flowserve Corporation. Printed in USA
Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product isdesigned to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve prod-ucts might be used in numerous applications under a wide variety of industrial service conditions. Although Flowserve can (and often does) provide generalguidelines, it cannot provide specific data and warnings for all possible applications. The purchaser/user must therefore assume the ultimate responsibility for theproper sizing and selection, installation, operation, and maintenance of Flowserve products. The purchaser/user should read and understand the Installation andMaintenance (I & M) instructions included with the product, and train its employees and contractors in the safe use of Flowserve products in connection with thespecific application.
While the information and specifications contained in this literature are believed to be accurate, they are supplied for informative purposes only and should not beconsidered certified or as a guarantee of satisfactory results by reliance thereon. Nothing contained herein is to be construed as a warranty or guarantee, expressor implied, regarding any matter with respect to this product. Because Flowserve is continually improving and upgrading its product design, the specifications,dimensions and information contained herein are subject to change without notice. Should any question arise concerning these provisions, the purchaser/usershould contact Flowserve Corporation at any one of its worldwide operations or offices.
FLOWSERVE CORPORATIONFLOW CONTROL DIVISIONLimitorque Actuation Systems5114 Woodall RoadP.O. Box 11318Lynchburg, VA 24506-1318Phone: 434 528 4400Facsimile: 434 845 9736www.limitorque.com
For more information about Flowserve Corporation, contact www.flowserve.com or call USA 1-800-225-6989.