United Security Products AVD-45c Instrukcja Obsługi Strona 274

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260 UDC 6300 Process Controller Product Manual 1/03
8.7 Troubleshooting Procedures
Introduction
The troubleshooting procedures are listed in numerical order as they
appear in Table 8-7. 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.
Equipment needed
You will need the following equipment in order to troubleshoot the
symptoms listed in the tables that follow:
• DC Milliammeter – mAdc
• Calibration sources – T/C, mV, Volt, etc.
Voltmeter
Procedure #1
Table 8-8 explains how to troubleshoot power failure symptoms.
Table 8-8 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.
Check the earth ground
connection.
2
Make sure the chassis plugs
into the rear of the case
properly.
Withdraw the chassis and visually
inspect the controller board and
the inside of the case.
3
Check the Voltage selection.
Make sure the correct fuse is in
the proper location.
See if the Power Select Jumper
on the controller printed wiring
board is in the proper position for
the Voltage being used.
Make sure the correct fuse is
installed. See "Installing the Fuse,
Label, and Power Select Jumpers"
in Section 2 - Installation.
4
Check the system for Brown-
outs, heavy load switching, etc.;
and conformance to installation
instructions.
Refer to Section 2 - Installation.
Continued on next page
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