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OpenAir™ GLB Enhanced Non-Spring Return Rotary Electronic Damper Actuator
Troubleshooting
Start-Up/
Commissioning
24 Vac/dc
Two-position/
Floating 24 Vac/dc
GLB14x
Siemens Industry, Inc.
WARNING:
Do not open the actuator.
If the actuator is inoperative, replace the unit.
1.
Connect a Digital Multimeter (DMM) to the supply voltage wires.
Verify that the supply voltage is between 19.2 and 28.8 Vac/dc.
2.
3.
Turn off the power supply.
Check Operation:
1.
Connect all wires per Figure 18.
2.
Apply a control signal (24 Vac/dc) to wires 1 (red) and 6 (violet).
3.
Allow the actuator shaft coupling to rotate from 0° to 90°.
4.
Stop applying the control signal to wires 1 (red) and 6 (violet).
5.
Apply a control signal (24 Vac/dc) to wires 1 (red) and 7 (orange).
6.
Allow the actuator shaft coupling to rotate from 90° to 0°.
Check Auxiliary Switch A:
1.
Set the DMM dial to ohms (resistance) or continuity check.
2.
Connect wires S1 and S3 to the DMM. The DMM should indicate open circuit or no
resistance.
3.
Apply a control signal (24 Vac/dc) to wires 1 (red) and 6 (violet). The DMM should
indicate contact closure as the actuator shaft coupling reaches the setting of Switch A.
4.
Stop applying the control signal to wires 1 (red) and 6 (violet).
5.
Connect wires S1 and S2 to the DMM. The DMM should indicate open circuit or no
resistance.
6.
Apply a control signal (24 Vac/dc) to wires 1 (red) and 7 (orange). The DMM should
indicate contact closure as the actuator shaft coupling reaches the setting of Switch A.
Check Auxiliary Switch B:
1.
Set the DMM dial to ohms (resistance) or continuity check.
2.
Connect wires S4 and S6 to the DMM. The DMM should indicate open circuit or no
resistance.
3.
Apply a control signal (24 Vac/dc) to wires 1 (red) and 6 (violet). The DMM should
indicate contact closure as the actuator shaft coupling reaches the setting of Switch B.
4.
Stop applying the control signal to wires 1 (red) and 6 (violet).
5.
Connect wires S4 and S5 to the DMM. The DMM should indicate an open circuit or no
resistance.
6.
Apply a control signal to wires 1 (red) and 7 (orange). The DMM should indicate contact
closure as the actuator shaft coupling reaches the setting of Switch B.
Technical Instructions
Document Number 155-785
January 20, 2017
Page 13
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