Standard programposi features 89
Automatic fault resets
The drive can automatically reset itself after overcurrent, overvoltage, undervoltage
and external faults. The user can also specify a fault that is automatically reset.
By default, automatic resets are off and must be specifically activated by the user.
WARNING! Before you activate the function, make sure that no dangerous
situations can occur. The function resets the drive automatically and continues
operation after a fault.
Settings
Parameters 31.12…31.16 (page 243).
Diagnostics
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 32.01 Supervision
status is activated, and a warning or fault generated. The contents of the message
can be edited on the control panel by selecting Settings - Edit texts.
The supervised signal is low-pass filtered.
Settings
See parameter group 32 Supervision (page 251).
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 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 measures, by integration, the monitored parameter. An warning is
given when the calculated area below the signal peak exceeds a user-defined
limit.
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