Troubleshooting; Electrical Test Values - ABB RSD Series Operating Instructions Manual

Trouble shooting
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7 Trouble shooting
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This chapter only covers failures caused by the hardware. Use the online-help of the
configuration software for an extended troubleshooting.
failure pattern
actuator can not move the
valve.
actuator does not react.
actuator does not run in AUT
mode, although "AUT" is
selected in the user interface.
LEDs in the commissioning
and service panel (CSP)
flash synchronously.
LEDs flash alternately.
failure when approaching the
end position.
,
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7.1

Electrical test values

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Motor
Brake
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24
possible reason
failure either at the
actuator or at the final
control element (e.g.,
stuffing box tightened too
much).
incorrect electronic unit or
incorrect data set.
Incorrectly configured
electronic unit.
no communication with
the control system.
incorrect wiring between
actuator and electronic
unit.
motor / brake faulty
Binary inputs on the
electronic unit are not
wired.
Brake does not release
(no mechanical "click").
Binary input 1 (BE 1) not
wired.
Actuator is not adjusted
properly.
Electronic unit / drive
failure.
Actuator in limit range of
positioning sensor.
MCS 071 BA MCS 080 BA
Winding resistance ± 5% at 20 °C (68 °F)
21 Ω 8 Ω
2180 Ω 1730 Ω
RSD10 ... 200 (Contrac)

troubleshooting

detach actuator from valve.
if the actuator moves the valve is
the possible cause.
if the actuator does not run, the
actuator is the possible cause.
Compare the nameplate data on
the actuator and electronic unit.
Check/update the settings for the
parametrization software.
Check wiring.
Check wiring.
Check the winding resistance of
the motor and brakes.
Check the brake lock.
Make connection.
Check the brake air gap (approx.
0.25 mm (0.010 inch)) and
electrical connection to the brake.
check winding resistance of the
brake coil.
Make connection.
Check the software settings for
the binary inputs.
Adjust actuator
drive the actuator beyond the
adjusted end position (either
manually or using the push buttons
on the CSP); <:hr>(if necessary
disconnect from valve or damper.)
drive the actuator back into the
operating range and connect it to
the valve / damper
re-adjust the operating range.
MC 090 BA MC 100 BA
3.7 Ω 3.7 Ω
1290 Ω 1080 Ω
MC 112 BA
1.4 Ω
1020 Ω
42/68-285-EN