User Guide

Technical Instructions OpenAir™ Non-Spring Return Rotary Electric Damper Actuator
Document Number 155-187P25 24 Vac – Modulating Control
May 19, 2014
Page 16 Siemens Industry, Inc.
Wiring, Continued
Daisy Chain
Configuration,
Figure 31.
WARNING:
Do not configure more than 12 actuators in
a daisy chain at any time.
Troubleshooting
WARNING:
Do not open the actuator.
If the actuator is inoperative, replace the unit.
Start-Up/
Commissioning
1. Check that the wires are connected correctly.
2. Check that offset and slope are set correctly, if used.
3. Check that the direction of rotation switch/cable matches the rotation of the damper
shaft.
4. Connect wires 1 (red) and 2 (black) to a Digital Multimeter (DMM) with the dial set at AC
V to verify that the operating voltage is within range.
Check operation:
1. Connect wires 1 (red) and 2 (black) to the actuator.
2. Set the DMM dial to Vdc.
3. Connect wires 2 (black) and 8 (gray) to the DMM.
4. Apply a full-scale input signal (10 Vdc) to wire 8 (gray).
5. Allow the actuator shaft coupling to rotate from 0 to 90°.
6. Disconnect wire 8 (gray) and the shaft coupling returns to the “0” position.
Check Feedback:
1. Set the DMM dial to Vdc.
2. Attach wires 2 (black) and 9 (pink) to the DMM.
3. Apply a full-scale input signal to wire 8 (gray). The reading at the DMM should increase.
4.
Remove the signal from wire 8 (gray). The reading at the DMM should decrease and the
actuator shaft coupling returns to the “0” position.
Check the 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 full-scale input signal to wire 8 (gray). The DMM should indicate contact closure
as the actuator shaft coupling reaches the setting of switch A.
NOTE:
You must select either
the top 3 contacts or the
bottom 3 contacts.