3 NM SERIES SPRING RETURN DIRECT COUPLED ACTUATORS
31-00141M—03 6
Fig. 10. Mounting actuator to damper housing.
WIRING
Electrical Shock or Equipment Damage Hazard.
Disconnect all power supplies before installation.
Motors with auxiliary switches can have more than
one disconnect.
IMPORTANT
All wiring must comply with local electrical codes,
ordinances and regulations.
Fig. 11. Cable installation details.
Switch operation
Gray/Black = Normally Open. Closed in range 80 degrees
to Fully Open.
Blue/Brown = Normally Closed. Open in range 10 degrees
to Fully Open.
1
Not available on all modulating models, see Table 1.
2
Brown for MS3103.
Floating and Modulating Models
Fig. 12. Wiring for SPDT on/off control, MS75.
Fig. 13. Wiring for floating control, MS75.
M37466
ENSURE THAT MOUNTING ASSEMBLY PREVENTS ACTUATOR
ROTATION AND ALLOWS ACTUATOR TO FLOAT ALONG
INDICATED AXIS. WHEN TOO TIGHT, THE RESULTING BINDING
CAN DAMAGE THE ACTUATOR OR REDUCE TORQUE OUTPUT.
THE BRACKET CAN BE BENT TO ALLOW MOUNTING THE
ACTUATOR PARALLEL TO THE MOUNTING SURFACE.
1
BRACKET
2
Detail with U-Bolt
1
2
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Table 3. Wiring Details.
Wire Floating Modulating Sylk
RED
power power power
BLACK
common common common
WHITE
2
0° - 90° control signal S-bus
BROWN
90° - 0°
feedback
1
S-bus
SPDT
24 VAC
1
1
2
LINE VOLTAGE POWER SUPPLY.
PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
SET SWITCH TO FLOATING.
M37304
ACTUATOR
V
0°-90°/MODULATING
90°-0°/FEEDBACK
2-10 VDC
10-2 VDC
0-10 VDC
10-0 VDC
FLOATING, FWD
FLOATING, REV
2
RED
BLACK
BROWN
WHITE
CLASS 2
24 VAC
1
1
2
LINE VOLTAGE POWER SUPPLY.
PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
SET SWITCH TO FLOATING.
M37319
ACTUATOR
V
4
3
1
2
2-10 VDC
10-2 VDC
0-10 VDC
10-0 VDC
FLOATING, FWD
FLOATING, REV
2
0°-90°/MODULATING
90°-0°/FEEDBACK
RED
BLACK
BROWN
WHITE
CLASS 2
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