United Security Products AVD-45c Manual Pagina 276

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262 UDC 6300 Process Controller Product Manual 1/03
8.7 Troubleshooting Procedures, Continued
Procedure #3
Table 8-10 explains how to troubleshoot Time Proportional Digital
Output(s) failure.
Table 8-10 Troubleshooting Time Proportional Digital Output(s)
Failure
Step What to do How to do it
1
Make sure the controller is
configured for Time Proportional
Digital output(s).
Make Set Up group prompt “OUT
ALG”. Function prompt “OUT
ALG” = selection is
“TIME” (Digital Output 3)
“TIME DPLX” (Digital Output 3 &
4)
"CUR TIME" (Digital Output 3 =
Heat)
"TIME CUR" (Digital Output 3 =
Cool)
whichever is required.
Refer to Section 3 - Configuration.
2
Check the field wiring. See Section 2 - Installation for
wiring diagrams.
• Check the power supply
connections at terminals 6 &7.
• Check Digital Outputs 3 & 4
connections at terminal 6 & 12
or 6 & 13.
• Make sure that any external
mechanical or Solid State relays
are receiving the signal.
3
Make sure all the configurable
tuning constants, limits, and
configuration data stored in the
controller are correct.
Reconfigure, if necessary.
Refer to Section 3- Configuration
to check all this data and how to
reconfigure.
4
Check that the Digital Output
actuates properly per the
controller output value.
• Check the Digital Output
continuity at rear terminals 6 &
12 (Digital Output 3) and 6 & 13
(Digital Output 4)
• Place the controller in Manual
mode and verify that continuity
is correct when the Output is at
100% and when the Output is
0%.
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