United Security Products AVD-45c Manual Pagina 277

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1/03 UDC 6300 Process Controller Product Manual 263
8.7 Troubleshooting Procedures, Continued
Procedure #4
Table 8-11 explains how to troubleshoot Alarm Digital Output(s) failure.
Table 8-11 Troubleshooting Alarm Digital Output(s) Failure
Step What to do How to do it
1
Check the alarm configuration
data. If it is correct, check the
field wiring.
Reconfigure if necessary.
Refer to Section 3 - Configuration
for details.
2
Check that the applicable Digital
Output energizes per error
signal properly. It depends on
what you have set at "ALARMS"
group prompt "AxSxTYPE".
If it does, check the field wiring.
If the alarm type is set for PV,
place the controller in manual
mode. Vary the input to raise and
lower the PV around the setpoint.
Note that the bargraphs and
proper annunciators flash.
If the alarm is set for OUTPUT,
put the controller into manual
mode. Raise or lower the output
above or below the value you
have set as the alarm setpoint.
Note that the bargraphs and
proper annunciators flash.
Check for proper continuity when
the alarm actuates.
3
Check the field wiring for Digital
Outputs 1, 2, 3, 4.
Refer to Section 2 - Installation for
details.
• Check the power supply
connection at the rear terminals
6 and 7.
• Check the Digital Output
connections at the following
terminals:
6, 10 D/O#1
6, 11 D/O#2
6, 12 D/O#3
6, 12 D/O#4
Check for proper continuity.
• Make sure that any external
mechanical or solid state relays
are receiving the Digital Output
signals.
Continued on next page
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