
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
36
N40067 - 7/11 - Subject to change. © Belimo Aircontrols (USA), Inc.
Indicates an action or condition that may cause
irreversible damage to the actuator(s) or
associated equipment.
Equipment damage!
Power consumption and input impedance
must be observed.
CAUTION
Indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.
It may also be used to alert against unsafe practices.
Warnings and Cautions appear at appropriate
sections throughout this manual. Read these carefully.
Hazard Identification
A
B
C
D
E
F
LS3
A-C
(Open Indication)
LS4
D-F
(Closed Indication)
Contact Rating: 5A 250 VAC Max.
SY2...12-120MFT
SY2...12-230MFT
Actuators: SY2...12-120MFT SY2...12-230MFT
NOTES SY2...12-120MFT (230MFT)
sCaution: Power supply voltage.
Use of feedback is optional.
APPLICATION NOTES
Recommended twisted shielded pair for control wiring.
Ground shielded wire at control panel chassis.
Tape back ground at actuator.
Observe class 1 and class 2 wiring restrictions.
INSTALLATION NOTES
Power Supply Com – 120 VAC (N) / 230 VAC (L1)
Power Supply Hot – 120 VAC (H) / 230 VAC (L2)
ŏ
1
Y
U5
C1
ŏ
2
C2
B
A
1
9
8
10
3
2
Internal Use Only
Internal Use Only
Internal Use Only
Not Used -
Not Used -
Internal Use Only
Internal Use Only
Internal Use Only
Internal Use Only
Internal Use Only
Feedback
Control Signal (-)
Feedback Signal (+)
Feedback Signal (-)
Control Signal (+)
SYx-230MFT
Address Adaption
PC Tool
Service Jack
SYx-120MFT
LN
Power Supply Com – 120 VAC (N) / 230 VAC (L1)
Power Supply Hot – 120 VAC (H) / 230 VAC (L2)
ŏ
1
Y
U5
C1
2
C2
B
A
1
9
8
10
3
2
Internal Use Only
Internal Use Only
Internal Use Only
Not Used -
Control Signal
Not Used -
Internal Use Only
Internal Use Only
Internal Use Only
Internal Use Only
Internal Use Only
Feedback
Control Signal (-)
Feedback Signal (+)
Feedback Signal (-)
Control Signal (+)
SYx-230MFT
Address Adaption
PC Tool
Service Jack
SYx-120MFT
LN
G
PE
G
PE
Actuator
Actuator B
Y1
Y2
Y1
Y2
35
36
35
36
36
35
W552_2
Wiring for Control Valves
Proportional, Multiple Wiring, 120/230V
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