Install Instructions

OpenAir GMA Series Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators Technical Instructions
Document Number 155-315P25
March 6, 2018
Siemens Industry, Inc. Page 17
Start-Up/
Commissioning,
Continued
5. 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. Apply the input signal as in Step 1d, to wire 8 (gray).
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. Apply the input signal as in Step 1f, to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting of
switch B.
GMA12x
Spring Return
2-Position
24 Vac/dc
1.
Check Operation:
a. Connect wires 1 (red) and 2 (black) to 24 Vac/dc power supply.
Allow the actuator shaft coupling to rotate from 0° to 90°.
b. Disconnect wire 1 (red) and the actuator shaft coupling returns to the "0" position.
2.
Check Spring Return:
a. Connect wire 1 (red).
Allow the actuator shaft coupling to rotate halfway.
b. Disconnect wire 1 (red).
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 open circuit or no resistance.
c. Connect wire 1 (red).
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. Disconnect wire 1 (red).
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. Connect wire 1 (red).
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. Disconnect wire 1 (red).
The DMM should indicate contact closure as the actuator shaft coupling reaches the setting of
switch B.