Siemens OpenAir GCA Series Technical Instructions page 18

Technical Instructions
Document Number 155-173P25
December 7, 2009
Start-Up/
Commissioning
GCA12x (24
Vac/dc)
GCA22x (120 Vac)
(Continued)
GCA13x
Page 18
OpenAir™ GCA Series Spring Return 160 lb-in Electronic Damper Actuators
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 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 Vac power.
The DMM should indicate contact closure as the actuator shaft coupling
reaches the setting of switch B.
1. Check Operation:
a. Connect wires 1 (red) and 2 (black) to 24 Vdc power supply.
b. Apply a control signal (24 Vac/dc) to wire 6 (violet).
c. Allow the actuator shaft coupling to rotate from 0 to 90°.
d. Stop applying a control signal to wire 6 (violet).
e. Apply a control signal (24 Vac/dc) to wire 7 (orange).
f. Allow the actuator shaft coupling to rotate from 90 to 0°.
2. Check Spring Return:
a. Apply a control signal (24 Vac/dc) to wire 6 (violet).
b. Allow the actuator shaft coupling to rotate half way.
c. Disconnect wire 1 (red).
d. The spring returns the actuator shaft coupling to the fail "0" position.
e. Connect wire 1 (red). The actuator shaft coupling begins to move.
3. Check Feedback:
a. Set the digital multimeter (DMM) dial to ohms.
b. Connect wires P1 and P2 to the DMM. The DMM should indicate a resistive value.
c. Apply a control signal (24 Vac/dc) to wire 6 (violet).
The reading of the DMM should increase.
d. Stop applying a control signal to wire 6 (violet).
e. Connect wires P2 and P3 to the DMM. The DMM should indicate a resistive value.
f. Apply a control signal (24 Vac/dc) to wire 7 (orange).
The reading of the DMM should increase.
4. Check the Auxiliary Switch A:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S1 and S3 to DMM. The DMM should indicate an open circuit or no
resistance.
c. Apply a control signal (24 Vac/dc) to wire 6 (violet).
The DMM should indicate contact closure as the actuator shaft coupling reaches the
setting of switch A.
d. Stop applying a control signal to wire 6 (violet).
e. Connect wires S1 and S2 to the DMM. The DMM should indicate an open circuit or no
resistance.
f. Apply a control signal (24 Vac/dc) to wire 7 (orange).
The DMM should indicate contact closure as the actuator actuator-shaft coupling reaches
the setting of switch A.
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