Troubleshooting - Distech Controls DA-062S Series Hardware Installation Manual

1. Check Operation:
a) Switch on 120 Vac power.
b) Allow the actuator shaft coupling to rotate from 0 to 90°.
c) Switch off 120 Vac power
The actuator shaft coupling will return to the fail "0" position.
2. Check Spring Return:
a) Switch on 120 Vac power.
b) Allow the actuator shaft coupling to rotate halfway.
c) Switch off 120 Vac power.
actuator shaft coupling to the fail "0" position.
3. 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 an open circuit or no resistance.
c) Switch on 120 Vac power.
The DMM should indicate contact closure as the actuator shaft
coupling reaches the setting of switch A.
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 120 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 120 Vac power. The DMM should indicate
contact closure as the actuator shaft coupling reaches
the setting of switch B.
DA-062S024Fxxxx
Spring Return, Floating, 24 Vac/dc
1. Check Operation:
a) Connect wires 1 (red) and 2 (black) to a 24 Vac/dc
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 the 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). The spring returns the actuator
shaft coupling to the fail "0" position.
d) Connect wire 1 (red).
The actuator shaft coupling begins to move.
3. Check Feedback:
a) Set the 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 the 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:
The spring returns the
a) Set the DMM dial to ohms (resistance) or continuity
check.
b) Connect wires S1 and S3 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
shaft coupling reaches the setting of switch A.
d) Stop the 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 shaft coupling reaches the setting of switch A.
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
shaft coupling reaches the setting of switch B.
d) Stop the 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 shaft coupling reaches the setting of switch B.

Troubleshooting

To avoid injury or loss of life, pay attention to any hazardous
voltage. (For example, 120 Vac) when performing checks.
-
Check that the wires are connected correctly.
-
Check that span/offset (start point) and Dip switches are set
correctly, if used.
-
Use a Digital Multimeter (DMM) to verify that the operating
voltage is within range.
-
If the actuator is not working, check the damper for blockage. If
blocked, remove the obstacle and cycle the actuator power off
and on. The actuator should resume normal operating mode.
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