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D-500 MK2 User Manual
23. MOTORIZED CIRCUIT BREAKER CONTROL
The unit offers full control for any brand and model of motorized circuit breakers (MCB).
The MCB control is performed through 3 digital output functions, namely Open, Close and Undervoltage
coil controls. Only 2 of these outputs are used in a single application.
Any digital output can be assigned to MCB control signals through programming menu.
The MCB CLOSE sequence is below:
Activate UV output, wait for undervoltage coil timer (t
Activate CLOSE output, wait for close pulse timer (t
Deactivate CLOSE output
The MCB OPEN sequence is below:
Deactivate UV output
Activate OPEN output, wait for open pulse timer (t
Deactivate OPEN output
Open Pulse, Close Pulse and Undervoltage Coil timers
are adjusted through programming menu.
If MCB feedback input is defined and the MCB fails to
change position after the expiration of MCB Fail timer,
then a fault condition will occur.
op
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Firmware V-6.3
)
uv
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cl
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