Honeywell UDC 3300 사용자 설명서
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UDC 3300 Controller Product Manual
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9.7 Troubleshooting Procedures
Introduction
The troubleshooting procedures are listed in numerical order as they
appear in Table 9-7. Each procedure lists what to do if you have that
particular failure and how to do it or where to find the data needed to
accomplish the task.
appear in Table 9-7. Each procedure lists what to do if you have that
particular failure and how to do it or where to find the data needed to
accomplish the task.
WARNING—SHOCK HAZARD !
TROUBLESHOOTING MAY REQUIRE ACCESS TO
HAZARDOUS LIVE CIRCUITS, AND SHOULD ONLY BE
PERFORMED BY QUALIFIED SERVICE PERSONNEL. MORE
THAN ONE SWITCH MAY BE REQUIRED TO DE-ENERGIZE
UNIT BEFORE SERVICING.
HAZARDOUS LIVE CIRCUITS, AND SHOULD ONLY BE
PERFORMED BY QUALIFIED SERVICE PERSONNEL. MORE
THAN ONE SWITCH MAY BE REQUIRED TO DE-ENERGIZE
UNIT BEFORE SERVICING.
Equipment needed
You will need the following equipment in order to troubleshoot the
symptoms listed in the tables that follow:
symptoms listed in the tables that follow:
• DC Milliammeter – mAdc
• Calibration sources – T/C, mV, Volt, etc.
• Voltmeter
Procedure #1
Table 9-8 explains how to troubleshoot power failure symptoms.
Table 9-8
Troubleshooting Power Failure Symptoms
Step
What to do
How to do it
1
Check the AC line voltage.
Use a voltmeter to measure the AC
voltage across terminals L1 and L2 on
the rear terminal panel of the
controller.
voltage across terminals L1 and L2 on
the rear terminal panel of the
controller.
Check the earth ground connection.
2
Make sure the chassis plugs into
the rear of the case properly.
the rear of the case properly.
Withdraw the chassis and visually
inspect the controller board and the
inside of the case.
inspect the controller board and the
inside of the case.
3
Check the system for Brown-outs,
heavy load switching, etc., and
conformance to installation
instructions.
heavy load switching, etc., and
conformance to installation
instructions.
Refer to Section 2 - Installation.
4
Change PS/Input board.
Refer to Table 9-20.
5
Change MCU/Output board.
Refer to Table 9-23.