Honeywell DR4500A - Visual Failure Symptoms; Table 9-5 Visual Failure Symptoms

Troubleshooting / Service
Visual Failure Symptoms
212 DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual Release L
February 2017
9.4 Visual Failure Symptoms
Introduction
In addition to the error message prompts, there are visual failure symptoms that can be identified by noting
the erratic recorder functions.
Symptoms
Compare your symptoms with those shown in Table 9-5 and refer to the troubleshooting procedure
indicated to correct the problem.
Table 9-5 Visual failure symptoms
Symptom
Troubleshooting
Procedure
Recorder will not operate
1
Recorder operation is normal but pen trace is incorrect
2
Chart rotates at wrong speed or will not rotate (pen indication correct)
3
Pen remains at high end of range when input signal is low
4
Pen does not move when input signal changes
5
A key does not respond and/or a display does not light
6
Displayed output does not agree with controller output
Current Proportional Output Type
Position Proportional Output Type
Single or Dual Relay Output Type
Duplex Current/Time or Time/Current Proportional Output Type
Auxiliary Output Type
7
8
9
10
11
External Alarm Function does not operate properly
12
Modbus Communications Failure
13