Encoff, Encpol – Parker Hannifin 88-021610-01G User Manual

Page 127

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Parker Hannifin

Chapter 6 Command Reference 127

rotary motors by default. If a linear motor is configured, the drive sets a 2.67
MHz pre-quadrature maximum input encoder frequency by default.

The ENCFLT command increases the default maximum pre-quadrature

encoder frequency from 1.02 MHz to 2.67 MHz or 5 MHz. This allows users
to take advantage of the higher input frequency, if necessary, at the expense
of some noise immunity.

Note:

This command does not take effect until you cycle power to the drive

or send the RESET command.

ENCOFF

Encoder Offset

Type

Motor configuration

Product Rev

Syntax

<a_>ENCOFF<i>

Aries

1.0

Units

i = encoder offset

Range

-32768 to 32767

Default

0

Response

ENCOFF: <*>0

See Also

ALIGN

,

ENCPOL

,

SHALL

,

IANI

,

CMDDIR

,

P163

The ENCOFF command specifies the encoder offset. All standard (non-smart)

Parker encoders have an encoder offset of 0 degrees. The smart encoders
store the encoder offset in the motor, which the drive reads (and stores in the
ENCOFF parameter) upon power-up. The offset can vary from
–180 degrees (corresponding to ENCOFF=-32768) to +180 degrees
(corresponding to ENCOFF = 32767).

Note:

To convert from degrees to counts, just multiply the offset in degrees

by 182.044.

ENCPOL

Encoder Polarity

Type

Drive Configuration

Product Rev

Syntax

<a_>ENCPOL<b>

Aries 2.0

Units

b = polarity bit

Range

0 (normal polarity), 1 (reverse polarity)

Default

0

Response

ENCPOL: <*>0

See Also

ALIGN

,

CMDDIR

,

TPE

,

TPER

The ENCPOL command reverses the encoder counting direction.
You can reverse the encoder polarity if the encoder input is counting in the
wrong direction (for example, using a custom motor). This reverses the
encoder counting direction without having to change the actual wiring to the
encoder input.

Notes

• This command does not take effect until you cycle power to the

drive or send the RESET command.

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