SULAB MCTC-MCB-B Elevator Control Board 1PC MOQ

Monarch Elevator Accessories, Elevator PCB, Elevator Control Cabinet Interface Board, Monarch Elevator Inverter Motherboard MCTC-MCB-B

Common faults of the MCTC-MCB-B elevator main control board include communication failures, safety circuit failures, door lock failures, and abnormal speed failures. Details are as follows:

Inverter unit protection: Fault code E01 may be caused by main circuit output grounding or short circuit, excessively long traction motor wiring, or internal IGBT damage.

Acceleration overcurrent: Fault code E02 is typically caused by excessive motor load or improper inverter parameter settings.
Deceleration overcurrent: Fault code E03 may indicate abnormal current flow during elevator braking, possibly due to a faulty brake resistor or improper inverter braking parameter settings.
Constant speed overcurrent: Fault code E04 may be caused by a motor fault, abnormal inverter output, or abnormal resistance during elevator operation.
Deceleration overvoltage: Fault code E06 may indicate excessive motor feedback energy during deceleration, which may result in the brake resistor failing to dissipate the energy quickly, or a faulty inverter brake unit.
Constant speed overvoltage: Fault code E07 may indicate excessive power supply voltage, a faulty inverter voltage detection circuit, or abnormal regenerative braking during elevator operation.
Undervoltage fault: Fault code E09, this may be caused by a momentary power outage, low input voltage, or an abnormality on the drive control board.

Abnormal contactor feedback: Fault code E36 indicates possible contactor damage, poor contactor contact, or a fault in the contactor feedback circuit.
Abnormal brake feedback: Fault code E37 indicates possible brake switch failure, brake coil damage, or a problem with the brake feedback circuit.
Abnormal controller rotary encoder signal: Fault code E38, similar to Fault codes E17 and E20, indicates possible problems with encoder-related components or circuitry.
Motor overheat: Fault code E39 indicates possible problems with motor heat dissipation, prolonged high-load operation, or a short circuit in the motor's internal windings.
Elevator operation timeout: Fault code E40 indicates possible abnormal resistance during elevator operation, a door lock failure, or a main control board program error.
Safety circuit disconnect: Fault code E41 indicates possible activation of a switch in the safety circuit (such as the speed limiter switch or safety clamp switch), damage to the safety circuit relay contacts, or a short in the safety circuit circuit.
Door lock disconnect during operation: Fault code E42 indicates possible improper door blade position, poor contact of the door lock contactor, or poor contact between the car door lock or landing door lock. The upper limit signal is disconnected during operation (fault code E43). This could indicate a faulty upper limit switch, incorrect installation position, or a faulty upper limit signal circuit.
The lower limit signal is disconnected during operation (fault code E44). Similar to E43, this indicates a problem with the lower limit switch components or circuitry.
The upper and lower deceleration switches are disconnected (fault code E45). This could indicate a deceleration switch fault, incorrect installation position, or a broken deceleration switch circuitry.