Multilin 469 Motor Management Relay ... - GE Digital Energy

CHAPTER 4: INTERFACES
• Active alarms.
• Relay date and time.
• Present blocking conditions.
• General system status indication including the status of output relays,
active pickup, alarm and trip conditions.
2. Metering Data:
• Instantaneous current measurements including phase, differential,
unbalance, ground, average, motor load, and differential currents.
• RTD Temperatures including hottest stator RTD.
• Instantaneous phase to phase and phase to ground voltages
(depending on the VT connections), average voltage, and system
frequency.
• Motor Speed
• Power Quantities including Apparent, Real and Reactive Power.
• Current and power demand including peak values.
• Analog inputs
• Vector information.
3. Motor Learned Data:
• Learned Acceleration Time
• Learned Starting Current
• Learned Starting Capacity
• Last Acceleration Time
• Last Starting Current
• Last Starting Capacity
• Average Motor Load Learned
4. Maintenance data
This is useful statistical information that may be used for preventive maintenance.
It includes:
• Trip counters
• General counter such as Number of Motor Starts, Number of Emergency
Restarts, Number of Starter Operations, Digital Counter for other
purposes not listed above.
• Timers such as Motor Running Hours, Time Between Starts Timer, and
five Start Timers used to calculate the average start time of the motor.
5. RTD Learned Data
This includes the maximum temperature measured by each of the 12 RTDs.
6. Event recorder downloading tool
7. Product information
This includes model number, firmware version, additional product information, and
calibration dates.
8. Oscillography and data logger downloading tool
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL 4–47