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2.6.1.4 Microstep Current Boost Set Up
Definition
The current boost selection sets the drive current in microstep
mode at speeds above 500 Full Steps/sec. With current boost
enabled, driver microstep current is boosted 1.4 times rate
microstepping current at step rates above 500 full steps per
second. With current boost enabled, driver supplies rated
microstep current at all step rates.
Benefit
Due to sine/cosine current excitation in the microstepping mode,
the actual RMS current level while microstepping is 70% of the
full step rated current. The microstep current boost feature allows
the motor microstep current to be boosted 1.4 times at step rates
above 500 full steps per second.
Procedure
With the power OFF, enable or disable microstep current boost
by moving the switches to the appropriate positions as follows:
1
2
3
4
5
6
1
2
3
4
5
6
To set microstep
current boost to ...
Move switch SW1 settings to .....
Enable
(Default factory setting)
Disable
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5345/5445 Installation and Hardware Manual
Rev F
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