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Specifications and Product Data 6-3MN894
Control Specifications
Control Method 6 SCR’s connected in inverse parallel for full-wave 3 phase control
Peak Inverse Voltage 208/230 460 575
1200VAC minimum 1200VAC minimum 1600VAC
Start Time Adjustable range 3-50 seconds (current limit starting is not timed).
Stop Time Adjustable range 5-50 seconds (can only extend stop time).
Initial Torque Adjustable range: Starting 40-75%, Stopping 0-100%.
Current Limit (Selectable) Adjustable range 75-400% of FLA (full load amperes).
Pulse Time (Selectable) Adjustable range 0.1-1.5 seconds.
Current Monitor (Selectable) Adjustable range 50-400% of FLA. Causes contact closure or control shut
down when current level is reached (after starting).
Power Factor Adjustable for maximum reduced motor voltage, dependent on load.
Tach input (Selectable) 0-10VDC (maximum 10msec response time from tach).
Control module power 12VA at 115/230VAC ±5%
Status Contacts 125VAC at 0.5A, normally open. 60VA maximum rating.
Agency Listings UL (Underwriters Laboratory) and cUL (Canada)
Rated Storage Temperature: −40 °F to +140 °F (− 40 °C to +60 °C)
Note: A minimum inductance of 0.01 Henry is require for the SCR’s to commutate. Some large horsepower motors may
not have enough inductance and require adding inductors between the motor and control.
SCR Specifications
Overcurrent Over current shut down at 450% of motor FLA nameplate rating.
Shorted SCR detection Shunt Trip contract.
Protective Features
Overload Electronic overload class 30.
SCR Thermostat Trips on overtemperature of heatsink (sizes 55 amps and larger only).
Phase Loss Shunt Trip contact (sizes 55 amps and larger only) active only at power-up.
Voltage Transient MOV (metal oxide varistor).
Indicator LEDs
Power ON Ramp End
Over Current Shunt Trip
Current Monitor Start/Run
Motor Power Motor Current
MOV Devices Four varistors connected in wye configuration with one to ground.
MOV505EL
Max line volts=510VAC
Watts = 1.0
Max one time surge of 6500A @ 8V/20ms
MOV620E
Max line volts=625VAC
Watts = 1.0
Max one time surge of 6500A @ 8V/20ms