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Elevator Core Reference Guide

Group 9.3 Comfort Optimisation - DC Injection operation to solve rollback during starting

Parameter Number

Parameter Name

Units

Default

Available Settings

Access

Change During Run

Scaling

Size (Bytes)

CAN Register

CAN Sub Index

Modbus Register

P9-11

DC Injection Time At Start

sec

0.5s

0.0 ... 10.0s

RW

Y

1 = 0.1 s

1

238Fh

0

911

P9-12

DC Injection Current At Start

%

50%

0.0 ... 200.0%

RW

Y

1 = 0.1 %

2

2390h

0

912

The drive injects DC current into the motor for the time set in this parameter at the start of the travel sequence at 0.

Function Disabled if value entered = 0.0.

Best value is the shortest time but with the least amount of rollback. Also note that while DC Injection is active the speed error detection is turned off.

Sets the level of current injected into the drive for the time set in P9-11.

Value is set as a % of P4-06 motor rated current.