Motortronics
Page 27
APPENDIX A: Technical Specifications
Voltage Rating:
Models rated from 208 – 600 +/- 10%
Line Frequency:
Selectable for 50 / 60 Hz + 2Hz
Current Ratings:
50 – 1000A
50, 100, 200, 300, 400, 550, 800, 1000A
Output Capacity:
25% duty cycle at 100% unit rating
Power Circuit:
Fu wave bridge, 4 SCRs, designed for use without isolation
contactors.
Transient Protection:
RC snubber dv/dt circuit on each SCR device.
Fusing:
Approved for use with existing motor starter fusing when unit is
sized for motor FLA. Consult NEC for any other fusing requirements.
Control Circuit:
Self-powered directly from line terminals. No separate control
voltage required.
Control Method:
Microprocessor unit control sequencing, I/O monitoring and status
annunciation. Braking current is adjustable via true RMS regulated
control using phase angle firing of SCRs.
Operator Adjustments:
Brake Time and Jog Time = 7 position binary dip-switch.
Brake Current = potentiometer
Adjustment Ranges:
Brake Jog Time = 0 – 127 seconds in 1 sec. increments.
Brake Current = Up to 100% of unit rating.
Inputs:
Starter Monitor = Dry input for auxiliary contact from motor starter.
Jumper selectable for N.O. or N.C. contact.
Inputs:
Brake Disable = Dry input for N.O. contact to disable braking before
or during operation. Can be wired to the starter thermal overload
N.O. auxiliary contact to prevent braking of overloaded motor.
Jumper selectable for N.O. or N.C. contact.
Motor Power Sensor (T3) = Voltage input used for sensing motor
power presence in sequencing / status circuit and for zero speed
sensing during braking.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
