Pw[n] - pwm signal parameters – ElmoMC SimplIQ Digital Servo Drives-Bell Command Reference User Manual

Page 146

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PW[N] - PWM Signal Parameters

Purpose:

PW[1] defines the offset value for PWM signals in fractions of the Duty cycle.
PW[2] defines the dead band zone of the PWM signal in the fractions of the Duty cycle.

At times, the application requires the Duty cycle value to be different from the source
of the PWM signals (i.e. offset). The PW[1] parameter is intended for this purpose.

The Actual Duty Cycle is Estimated Duty Cycle – Offset.

A very low Duty cycle values may cause a motor to “crawl” when a complete stop is
desired.

The dead band zone parameter (PW[2]) forces the Actual Duty Cycle to zero when it is
less than PW[2].

Attributes:

Type: Parameter,

Real

Source:

Program, RS-232, CANopen

Restrictions: None
Default values:

PW[1]=0, PW[2]=0(RS), Non-volatile

Range:

PW[1]: [-1.0 …1.0]

PW[2]: [0.0 …1.0]

Index range: [1,

2]

Unit modes: All
Activation: Immediate
SimplIQ:

Similar

Note:

A

SimplIQ

drive may receive the PWM signals in two formats: 50% and 100%

Duty cycle. For more details, please refer to the YA[] command.

See also:

AN[N]

,

FR[N]

,

RM

,

YA[N]

SimplIQ for Steppers Command Reference Manual

Alphabetical Listing

MAN-STECR (Ver. 1.1)

138

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