Table of Contents
Advertisement
GE
Grid Solutions
MM200 Motor Management System
Chapter 5: Diagnostics
Digital counters
NOTE:
MM200 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
Diagnostics
The diagnostics pages display typical diagnostic information, including learned data,
phasors, system counters, and system information. In the event of a trip or alarm, the
diagnostic pages are often very helpful in diagnosing the cause of the condition.
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.
When the relay is powered off, the counter values are stored in non-volatile memory.
Total Number of Trips, Incomplete Sequence Trips, Overload Trips, Mechanical Jam
NOTE
Trips, Undercurrent Trips, Current Unbalance Trips, Ground Fault Trips, Motor
Acceleration 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.
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.
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.
Motor Stopped Hours
Range: 0 to 100000 hours in steps of 1
The motor stopped hours timer accumulates the total stopped time for the motor. This
value may be useful for scheduling routine maintenance.
5–1
Advertisement
Table of Contents
