Pentair 920 Series Installation, Operating And Maintenance Instructions page 48

a method to do preventative maintenance on the contactor according to the manufacturer's
specifications. The count value is written to the controller's nonvolatile memory once every 24
hours or whenever any maintenance data is reset by the user.
procedure: The CONTACTOR CYCLE COUNTER may be reset to zero using the optional 920
Operator Console or a communicating device.
Important:
• Once the CONTACTOR CYCLE COUNTER reaches 999,999,999 it stops counting.
• The CONTACTOR CYCLE COUNTER is only indicated if the SWITCH CONTROL MODE is set to
either DEADBAND or PROPORTIONAL AMBIENT CONTACTOR.
4.3.4 tIme In use
purpose: The purpose of this feature is to indicate the total hours of controller use since its initial
operation. It may be useful to log the amount of time a controller has been in service for the
purposes of maintenance planning or reliability testing. The value of this accumulator is written
to the controller's nonvolatile memory once every 24 hours or whenever any maintenance data is
reset by the user.
procedure: The IN USE hours accumulator can be reset to zero using the optional 920 Operator
Console (V3.11+) or a communicating device.
Important: The IN USE hours accumulator value will roll over to zero when the upper limit of the
accumulator has been exceeded. This limit is 4,294,967,295 hours for V3.00, and 999,999,999 hours
for V3.11 and up.
4.3.5 tIme sInCe Last reset
purpose: This feature indicates the total hours of controller use since the last reset. It may be
useful to log the amount of time a particular controller has been in service since the last time the
controller's power was cycled for troubleshooting purposes.
procedure: The TIME SINCE LAST RESET hours accumulator can only be reset by cycling the
controller's power.
Important: The TIME SINCE LAST RESET will roll over to zero when the upper limit of 65,535
hours has been exceeded.
4.3.6 peaK Load Current (v3.11 and up)
Important: The PEAK LOAD CURRENT is not displayed on the optional 920 Operator Console.
Purpose: This feature indicates the highest instantaneous load current measured since the last
time the PEAK LOAD CURRENT was reset. This value is written to the controller's nonvolatile
memory once every 24 hours or whenever any maintenance data is reset by the user.
procedure: The PEAK LOAD CURRENT may only be reset to zero using a communicating device.
4.3.7 peaK Ground-fauLt Current (v3.11 and up)
Important: The PEAK GROUND-FAULT CURRENT is not displayed on the optional 920 Operator
Console.
purpose: This feature indicates the highest instantaneous ground-fault current measured since
the last time the PEAK GROUND-FAULT CUR-RENT was reset. This current value is written to the
controller's nonvolatile memory once every 24 hours or whenever any maintenance data is reset
by the user.
procedure: The PEAK LOAD CURRENT may only be reset to zero using a communicating device.
4.3.8 externaL Input status (v3.11 and up)
Important: The EXTERNAL INPUT STATUS is not displayed on the optional 920 Operator
Console.
purpose: This feature indicates the actual status of the external input regardless of the controller's
configuration. This can assist the operator who wishes to use the controller's external input to
monitor the status of an external dry contact and pass this on to another device.
procedure: The EXTERNAL INPUT STATUS may only be viewed using a MODBUS™-capable
software package.
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