369 Motor Management Relay Instruction Manual

Curve Biasing: ..................................................unbalance, temperature, hot/cold ratio,

cool time constants

Pickup Level: .....................................................1.01 to 1.25 × FLA

Pickup Accuracy: ............................................as per phase current inputs

Dropout Level:..................................................96 to 98% of pickup

Timing Accuracy:............................................±100 ms or ±2% of total trip time

THERMAL CAPACITY ALARM

Pickup Level: .....................................................1 to 100% TC in steps of 1

Pickup Accuracy: ............................................±2%

Dropout Level:..................................................96 to 98% of pickup

Timing Accuracy:............................................±100 ms

OVERLOAD ALARM

Pickup Level: .....................................................1.01 to 1.50 × FLA in steps of 0.01

Pickup Accuracy: ............................................as per phase current inputs

Dropout Level:..................................................96 to 98% of pickup

Time Delay:........................................................0.1 to 60.0 s in steps of 0.1

Timing Accuracy:............................................±100 ms or ±2% of total trip time

50 SHORT CIRCUIT

Pickup Level: .....................................................2.0 to 20.0 × CT in steps of 0.1

Pickup Accuracy: ............................................as per phase current inputs

Dropout Level:..................................................96 to 98% of pickup

Time Delay:........................................................0 to 255.00 s in steps of 0.01 s

Backup Delay: ..................................................0.10 to 255.00 s in steps of 0.01 s

Timing Accuracy:............................................+50 ms for delays <50 ms

±100 ms or ±0.5% of total trip time

MECHANICAL JAM

Pickup Level: .....................................................1.01 to 6.00 × FLA in steps of 0.01

Pickup Accuracy: ............................................as per phase current inputs

Dropout Level:..................................................96 to 98% of pickup

Time Delay:........................................................0.5 to 125.0 s in steps of 0.5

Timing Accuracy:............................................±250 ms or ±0.5% of total trip time

37 UNDERCURRENT

Pickup Level: .....................................................0.10 to 0.99 × FLA in steps of 0.01

Pickup Accuracy: ............................................as per phase current inputs

Dropout Level:..................................................102 to 104% of pickup

Time Delay:........................................................1 to 255 s in steps of 1

Start Delay:........................................................0 to 15000 s in steps of 1

Timing Accuracy:............................................±500 ms or ±0.5% of total time

Display

All messages are displayed on a 40-character LCD display to make them visible under poor

lighting conditions and from various viewing angles. Messages are displayed in plain

English and do not require the aid of an instruction manual for deciphering. While the

keypad and display are not actively being used, the display will default to user defined

status messages. Any trip, alarm, or start inhibit will automatically override the default

messages and appear on the display.

4.1.2 LED Indicators

There are ten LED indicators, as follows:

• TRIP: Trip relay has operated (energized)

• ALARM: Alarm relay has operated (energized)

• AUX 1: Auxiliary relay has operated (energized)

• AUX 2: Auxiliary relay has operated (energized)

• SERVICE: Relay in need of technical service.

• STOPPED: Motor is in the Stopped condition

• STARTING: Motor is in the Starting condition

• RUNNING: Motor is in the Running condition

• OVERLOAD: Motor is in the Overload condition

• LOCKOUT: Motor is in the Lockout condition