Install Instructions

Technical Instructions OpenAir GMA Series, Spring Return, 62 lb-in Rotary, Electronic Damper Actuators
Document Number 155-315P25
March 6, 2018
Page 18 Siemens Industry, Inc.
Start
-
Up/
Commissioning,
Continued
GMA22x
Spring Return
2-Position
120 Vac
WARNING: Switch off 120 Vac power before connecting wires 3 (black)
and 4 (white).
1. Check Operation:
a. Switch on 120 Vac power.
Allow the actuator shaft coupling to rotate from 0 to 90°.
b. Switch off 120 Vac power
The actuator shaft coupling will return to the fail "0" position.
2. Check Spring Return:
a. Switch on 120 Vac power.
Allow the actuator shaft coupling to rotate halfway.
b. Switch off 120 Vac power.
The spring returns the actuator shaft coupling to the fail "0" position.
3. Check the Auxiliary Switch A:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S1 and S3 to the DMM.
The DMM should indicate an open circuit or no resistance.
c. Switch on 120 Vac power.
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch A.
d. Connect wires S1 and S2 to the DMM.
The DMM should indicate open circuit or no resistance.
e. Switch off 120 Vac power.
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch A.
4. Check the Auxiliary Switch B:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S4 and S6 to the DMM.
The DMM should indicate open circuit or no resistance.
c. Switch on 120 Vac power.
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch B.
d. Connect wires S4 and S5 to the DMM.
The DMM should indicate open circuit or no resistance.
e. Switch off 120 Vac power.
The DMM should indicate contact closure as the actuator shaft coupling reaches
the setting of switch B.
GMA13x
Spring Return
Floating
24 Vac/dc
1. Check Operation:
a. Connect wires 1 (red) and 2 (black) to a 24 Vac/dc power supply.
b. Apply a control signal (24 Vac/dc) to wire 6 (violet).
Allow the actuator shaft coupling to rotate from 0 to 90°.
c. Stop the control signal to wire 6 (violet).
d. Apply a control signal (24 Vac/dc) to wire 7 (orange).
Allow the actuator shaft coupling to rotate from 90° to 0°.