September 2019
Installation, Operation and Maintenance Manual
MAN720_IMVS2000v2_IOM Rev. 6
MAN720_IMVS2000v2_IOM Rev. 6
Section 5: Working Principle
Working Principle
If a problem is verified during the SOV A TEST execution:
- “PST St.” assumes the value “Failed”
- “M. PST Date” and “M. PST Time” assume the current date and time values
- The PSA Alarm is activated
- The DO PST PASSED contact is opened
- The DO PST FAILED contact is closed
- A new graph is stored (the Status is “Failed”)
If the SOV A TEST is successfully executed:
- “PST St.” assumes the value “Passed”
- “M. PST Date” and “M. PST Time” assume the current date and time values
- The PSA Alarm is cleared
- The DO PST PASSED contact is closed
- The DO PST FAILED contact is opened
- A new graph is stored (the Status is “Passed”)
5.1.8.4 SOV A and SOV B TEST Details
Available from Logic Card FW Rev. 1.00.01.
The figure below shows an example of SOVs TEST on SOV A and SOV B on a system of two SOVs in
series (see for example Configuration C on paragraph 9.2.3).
This kind of test is performed in case of the following settings (see Section 5.1.6):
• “Act. Mode” = “Single” or “Double-S”
• “SOVs Qty” = “Series”
• “PST Ser. SOVs” = “Both”
• “Pr. S. 1-2” ≠ “None”
• “PST En.” = “No”
• “PST Pos %” = 0.0%
• “PST Pres. %” = 0%
• “PST Time %” = 0%
• “Al. PSA En.” ≠ “No”
• “Al. PSB En.” ≠ “No”
Figure 11
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