7 when the motor fails to start, 7 when the motor fails to start -8 – ElmoMC SimplIQ Software Manual User Manual

Page 203

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SimplIQ

Software Manual

Limits, Protections, Faults and Diagnosis

MAN-SIMSW (Ver. 1.4)

13-8

The normal waveforms for brake activation are as follows:

Figure

13-5: Normal Brake Activation Timing

At the brake activation times (BP[2] milliseconds to disengage and BP[1] milliseconds to
engage), the motor is controlled to a complete stop.

If MO=0 is set automatically by an exception, the brake is activated immediately,

without any delay.

13.7 When the Motor Fails to Start

The main reasons for failure when starting a motor are:
ƒ

The physical conditions are not right.

ƒ

The database is not consistent (refer to

section

13.9.2

)

The following physical conditions are checked before voltage is applied to the motor:
ƒ

Power supply under-voltage

ƒ

Power supply over-voltage

ƒ

Drive temperature too high

ƒ

Motor not connected to servo drive

ƒ

An active limit switch is programmed to shut down the servo drive

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