Diagnostics
￭ Fault and warning messages, data logging
See chapter Fault tracing (page 537).
￭ Signal supervision
Three signals can be selected to be supervised by this function. Whenever a supervised
signal exceeds or falls below predefined limits, a bit in 32.1 is activated, and a warning
or fault generated. The contents of the message can be edited on the control panel by
selecting Menu - Settings - Edit texts.
The supervised signal is low-pass filtered. The supervision operates on a 2 ms time
level. The configuration parameters are scanned for changes on a 10 ms time level.
Settings and diagnostics
Parameter group: 32 Supervision (page 341).
Events: A8B0 Signal supervision (page 575), A8B1 Signal supervision 2 (page 575), A8B2
Signal supervision 3 (page 575), 80B0 Signal supervision (page 557), 80B1 Signal
supervision 2 (page 557) and 80B2 Signal supervision 3 (page 558).
￭ Maintenance timers and counters
The program has six different maintenance timers or counters that can be configured
to generate a warning when a pre-defined limit is reached. The contents of the message
can be edited on the control panel by selecting Menu - Settings - Edit texts.
The timer/counter can be set to monitor any parameter. This feature is especially useful
as a service reminder.
There are three types of counters:
• On-time timers. Measures the time a binary source (for example, a bit in a status
word) is on.
• Signal edge counters. The counter is incremented whenever the monitored binary
source changes state.
• Value counters. The counter measures, by integration, the monitored parameter.
A warning is given when the calculated area below the signal peak exceeds a
user-defined limit.
Settings and diagnostics
Parameter group: 33 Generic timer & counter (page 345).
Program features 99
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