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Elevator Core Reference Guide

Fault Suppression Feature

Fault Suppression

Fault suppression is used to customized the fault reaction, from the default reaction (Immediate Trip) to a user selectable reaction. This can be used to avoid the lift getting stuck in the middle of the shaft.

Fault Suppression is only available for the trips listed in the table below:

Display message

No.

Description

Trip Reaction Parameter

Available Reactions

Ai-Los

59

Analog Input Signal Loss

P1-07 - DI4 Analog Input Signal Loss Reaction

Setting

Reaction

0

No Reaction

1

Run at speed in P1-08 (Analog Input Signal Loss speed) and return to speed reference when signal is reinstated.

2

Ramp to Stop using P8-04 (Deceleration ramp time) and trip Ai-LoS

F-Ptc

21

Motor PTC Over Temperature

P4-23 - Motor Thermistor Trip Reaction

Setting

Reaction

0

Trip at next stop command and show thermistor fault message F-Ptc or F-tY depending on the setting of P1-03 or P1-09.

1

Trip Immediately and show thermistor fault message F-Ptc or F-tY depending on the setting of P1-03 or P1-09.

2

Continue running and show thermistor warning message Ot-Mm.

F-tY

57

Motor KTY84 Thermistor Fault

Ot-br

58

Brake Resistor Overtemperature

P3-07 - Brake Resistor Temperature Monitor trip reaction

Setting

Function

Reaction Details

0

Stop then Trip

Drive stops normally then trips

1

Trip Immediately

Immediate trip, apply motor brake

2

Warning Only

Warning only, no trip.

Sc-F01

50

Modbus Communication Fault

P2-05 - Communication Loss Action

Setting

Drive Display

Reaction

0

triP

Immediate trip

1

r-triP

Ramp to stop then trip

2

StoP

Ramp to stop only (No Trip)

3

InSPct

Run at Inspection Speed (P8-08)

Sc-F02

51

CANopen Communication Fault

P2-09 - CANopen Comms Loss Reaction

Below is the answers to some commonly asked questions about Fault Suppression.

Question

Answer

Can all fault reactions be changed?

No only the fault codes listed in this Topic can be altered all others are fixed.

Why does the drive not trip

Check the fault reaction setting from the relevant parameter.