Technical Instructions
OpenAir™ GCA Series Spring Return 160 lb-in Electronic Damper Actuator
Document No. 155-173P25
May 19, 2014
Page 20
Siemens Industry, Inc.
Start-Up/
Commissioning
GCA13x
(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 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 actuator-shaft coupling reaches
the setting of switch B.
d. Stop applying a control signal to wire 6 (violet).
e. Connect wires S4 and S5 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 B.
GCA15x
GCA16x
1. Check Operation:
a. Connect wires 1 (red) and 2 (black) to the 24 Vac
or 24 Vdc power supply.
NOTE:
With no input signal present, the GCA15x actuator with signal
inversion switch set to Inverse Acting will start driving towards 90°.
b. Use a Digital Multimeter (DDM) and set the dial to Vdc for the actuator input signal.
c.
Connect wires 2 (black) and 8 (gray) to the DMM.
d. Apply to input signal wire 8 (gray):
Y = 10 Vdc or Y = Uo +
∆U (GCA16x)
Y = 10 Vdc (GCA15x in direct-acting mode)
Y = 2 Vdc (GCA15x in inverse-acting mode)
e. Allow the actuator shaft coupling to rotate from 0 to 90.
f.
Apply to input signal wire 8 (gray):
Y = 0 Vdc or Y = Uo (GCA16x)
Y = 2 Vdc (GCA15x in direct acting mode)
Y = 10 Vdc (GCA15x in inverse acting mode)
The shaft coupling returns to the "0" position.
2. Check Spring Return:
a. Set the DMM dial to Vdc.
b. Connect wires 2 (black) and 8 (gray) to the DMM.
c.
Apply to input signal wire 8 (gray):
Y = 5 Vdc or Y =Uo + 1/2
∆U (GCA16x)
Y = 6 Vdc (GCA15x)
d. Allow the actuator shaft coupling to rotate halfway.
e. Disconnect wire 1 (red).
The spring returns the actuator shaft coupling to the fail "0" position.
f.
Connect wire 1 (red) and the actuator moves.
3. Check Feedback:
a. Set the DMM dial to Vdc.
b. Attach wires 2 (black) and 9 (pink) to the DMM.
c.
Apply the input signal as in
Step 1d,
to wire 8 (gray).
The reading at the DMM should increase (decrease for GCA15x in inverse acting mode).
d. Apply the input signal as in
Step 1f,
to wire 8 (gray).
The reading at the DMM should decrease (increase for GCA15x in inverse acting mode) and
the actuator shaft coupling returns to the fail "0" position.
