GBB/GIB Series Non-spring Return, 24 Vac, Modulating Control
Technical Instructions
Document Number 155-176P25
June 22, 2015
Siemens Industry, Inc.
Page 15
Start-Up/
Commissioning
1. Check that offset (start point) and span are set correctly, if used.
2. Check that the direction of the rotation switch matches the rotation of the damper shaft.
3. Check the operation:
a. Connect wires 1 (red) and 2 (black) to the actuator.
b. Set the DMM dial to Vdc.
c. Connect wires 2 (black) and 8 (gray) to a Digital Multimeter (DMM).
d. Apply a full-scale input signal (10 Vdc) to wire 8 (gray).
e. Allow the actuator shaft coupling to rotate from 0 to 90.
f.
Disconnect wire 8 (gray) and the shaft coupling returns to the “0” position.
4. Check the Feedback:
a. Set the DMM dial to Vdc.
b. Attach wires 2 (black) and 9 (pink) to the DMM.
c. Apply a full-scale input signal to wire 8 (gray).
The reading at the DMM should increase.
e. Remove the signal from wire 8 (gray). The reading at the DMM should decrease and
the actuator shaft coupling returns to the “0” position.
5. Check the Auxiliary Switch A:
a. Set the DMM dial to ohms (resistance) or continuity check.
b. Connect wires S1 and S3 to the DMM. The DMM should indicate open circuit or no
resistance.
c. 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.
d. Connect wires S1 and S2 to the DMM. The DMM should indicate open circuit or no
resistance.
e. Stop the signal to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the
setting of switch A.
6. 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. 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 B.
d. Connect wires S4 and S5 to the DMM. The DMM should indicate open circuit or no
resistance.
e. Stop the signal to wire 8 (gray).
The DMM should indicate contact closure as the actuator shaft coupling reaches the
setting of switch B.
