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Motortronics :: ABC

Models rated from 208 - 600V + 10%
Selectable for 50/60Hz + 2 Hz
10 - 1000A in 10 sizes:
10, 24, 50, 100, 200, 300, 400, 550, 800, 1000A
25% duty cycle at 100% unit rating (model dependent above 200 Amps)
Full wave bridge, 4 SCRs, designed for use without isolation contactors
RC snubber dv/dt circuit on each SCR device
Approved for use with existing motor starter fusing when unit is sized for motor FLA. Consult NEC for any other fusing requirements.
Self-powered directly from line terminals. No separate control voltage required.
Microprocessor unit controls sequencing. I/O monitoring and status annunciation. Braking current is adjustable via true RMS regulated control using phase angle firing of SCRs.
Brake Time and Jog Time = 7 position binary dipswitch
Brake Current = potentiometer
Brake Jog Times = 0 - 127 seconds in 1 sec. increments
Brake Current = Up to 100% unit rating
Starter Monitor = Dry input for auxiliary contact from motor starter. Jumper selectable for N.O. or N.C. contact.
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.
Motor Power Sensor (T3) = voltage input used for sensing motor power presence in sequencing/status circuit and for zero speed sensing during braking.
Starter Coil Interlock = Two sets of FORM "C" relay contacts for use in interlocking the starter coil and/or other devices to prevent energizing while the braking power is applied.
Mechanical Brake Release = N.O. relay contact for use in controlling electro-mechanical brake as a holding brake. When the ABC is "disabled," this circuit controls the mechanical brake normally as if it were the only brake in the system.
5 amps, 250VAC max
Large LEDs: Braking = green; Fault = red
Small LEDs: Power On, Jog/Armed, Brake Off, Disabled, Over Temp, and Wiring Error
0 - 50¼C (32-122¼F) open
0 - 40¼C (32 - 104¼) enclosed
0 - 95% relative humidity
0 - 3300ft (1000M) elevation
UL, cUL Listed