
CHAPTER 7: DIAGNOSTICS DIGITAL COUNTERS
MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL 7–3
7.2 Digital counters
The Home > Diag > Counters page displays the values of the various MM300 digital
counters.
Figure 3: Counters page
The total number of trips by type are displayed in this screen. Trip counters are typically
used for scheduling inspections on equipment, for performing qualitative analysis of
system problems, and for spotting trends. Several general counters are also available.
Total Number of Trips, Incomplete Sequence Trips, Overload Trips, Mechanical Jam
Trips, Undercurrent Trips, Current Unbalance Trips, Ground Fault Trips, Motor
Acceleration Trips, Underpower Trips
Range: 0 to 65535 trips in steps of 1
These values display a breakdown of number of trips by type. When the total number of
trips for any counter exceeds 65535, that counter is reset to 0. To clear this value, use
the Clear Counters command.
Number of Motor Starts
Range: 0 to 65535 starts in steps of 1
This value displays the number of accumulated motor starts or start attempts. This value
may be useful information when troubleshooting a motor failure. When this counter
exceeds 65535 starts, it will reset to 0. To clear this value, use the Clear Maintenance
Timers command.
Number of UV Restarts
Range: 0 to 65535 restarts in steps of 1
This value displays the number of accumulated undervoltage restarts. This value may be
useful information when troubleshooting a motor failure. When this counter exceeds
65535 restarts, it will reset to 0. To clear this value, use the Clear Counters command.
Motor Running Hours
Range: 0 to 100000 hours in steps of 1
The motor running hours timer accumulates the total running time for the motor. This
value may be useful for scheduling routine maintenance. Counter will roll over to zero
after range is exceeded. To clear this value, use the Clear Maintenance Timers
command and stop the motor.
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