Data Sheet for Product

Technical Instructions OpenAir® Non-Spring Return Rotary Electric Damper Actuator
Document Number 155-187P25 24 Vac – Modulating Control
May 13, 2021
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.
4. Connect wires S1 and S2 to the DMM. The DMM should indicate open circuit or no
resistance.
NOTE:
You must select either
the top 3 contacts or the
bottom 3 contacts.