5-8
Troubleshooting a Analog to Digital Failure Alarm (AD), Cont.
Step
Procedure,
Cont.
4.
In the PCCU Entry screen, monitor the readings by clicking on the
I/O subsystem, On Board and Analog Inputs. Check SP, DP and
temperature to determine which measurement channel is causing
the alarm.
A)
If alarm is caused by the SP or DP channel, equalize and vent
manifold.
•
If alarm disappears, 1) SP or DP cell is not ranged properly or
2) Manifold may have blockage.
•
If alarm is still present, replace Transducer.
B) If alarm is caused by the temperature channel, Skip to Step 9,
otherwise go to next step.
5.
Set XMV back to “Factory” calibration. If this corrects the alarm,
recalibrate XMV to correct field calibration. If alarm is not corrected,
continue to next step.
6.
Perform “Warm” start on unit: Verify that unit is not displaying a LL
(Low Lithium) alarm, then remove power from unit. Restore power
to unit. If A/D Failure alarm is not corrected, continue to next step.
7.
Perform Save and Restore function. Follow procedure in “Chapter 4
Maintenance” for Backing up Configuration Files. Be sure to
Restore these files to the S: Drive.
8.
Perform a Cold Start on unit following Reset Procedures covered in
this chapter. If problem is not corrected, continue to next step.
9.
Check RTD wiring at XMV.
10.
Perform the following three procedures found next in this Chapter:
A) RTD Continuity Test
B) RTD Resistive Test
C) RTD Impedance Test
11.
Contact Totalflow to repair or replace XMV.
Summary of Contents for XRC6490
Page 1: ...2100802 001 AB TOTALFLOW XSeries Remote Controller User s Manual ...
Page 6: ...iv B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 10: ...viii B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 19: ...1 5 Standard Enclosure Cont RC 6790 X Figure 1 2 Model XRC6790 Continued on Next Page ...
Page 41: ...1 27 Totalflow Input Output Modules Cont Figure 1 16 XRC6990 Inside View ...
Page 42: ...1 28 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 64: ...2 22 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 86: ...4 12 Replacing XRC 195 Board Cont Figure 4 5 XRC Board Connections ...
Page 88: ...4 14 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 112: ...5 24 12V Communication Supply Voltage Test Cont Figure 5 9 XRC 195 Communication Wiring ...
Page 292: ...A 176 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 340: ...B 48 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
Page 342: ...C 2 B B Bl lla a an n nk k k P P Pa a ag g ge e e ...
