Troubleshooting; Introduction; Table 39 Observable Symptoms Of Failure - Honeywell HercuLine 2000 Series Installation, Operation And Maintenance Manual

Introduction

Troubleshooting procedures can be followed when inaccurate or faulty actuator operation is detected. In
this section, troubleshooting procedures consist of a few simple flow charts to test for proper function of
various actuator components. Component replacement is at the PWA or assembly level.
Table 39 indicates some of the observable symptoms of failure that can be identified by noting the faulty
actuator operation.
No Actuator current output.
No Actuator slidewire output.
Local display does not light.
Actuator fails one or more power up diagnostics.
Actuator motor does not drive in response to input signal.
Actuator motor does not drive to proper position.
Actuator Motor is "Hunting"
(Motor does not drive to a position and stop.)
Position sensor position is not correct.
Auto/Manual Switch does not operate correctly.
Relay(s) does not operate.
Revision 7 HercuLine™ 2000 Series Actuator - Installation, Operation and Maintenance Manual
7/08

Troubleshooting

Table 39 Observable Symptoms of Failure

Symptom Procedure
Replace CPU Assembly
Replace CPU Assembly
See Figure 42
See Figure 43
Perform input calibration.
See Figure 42
Perform motor calibration.
Process control loop is not tuned correctly.
Refer to the Instruction Manual for your
controller on how to tune a loop.
Increase the Deadband in the Actuator
and/or in the control loop.
See page 85.
See Figure 45
See Figure 46
Troubleshooting
Introduction
105