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Unidrive M702 User Guide

Issue Number: 3

4.15.2 Compatible position feedback devices

Table 4-25 Supported feedback devices on the P1 position

interface

* This feedback device provides very low resolution feedback and should
not be used for applications requiring a high level of performance

Table 4-26 Supported feedback devices on the P2 position

interface

Table 4-27 shows the possible combinations of position feedback device
types connected to the P1 and P2 position interfaces and the availability
of the encoder simulation output.

Table 4-27 Availability of the P2 position feedback interface and

the encoder simulation output

The priority of the position feedback interfaces and the encoder
simulation output on the 15-way D-type is assigned in the following order
from the highest priority to the lowest.
•

P1 position interface (highest)

•

Encoder simulation output

•

P2 position interface (lowest)

For example, if an AB Servo type position feedback device is selected
for use on the P1 position interface, then both the encoder simulation
output and the P2 position interface will not be available as this device
uses all connections of the 15-way D-type connector. Also, if an AB type
position feedback device is selected for use on the P1 position interface
and Pr

03.085

is set to a valid source for the encoder simulation output,

then the P2 position interface will not be available.

Depending on the device type used on the P1 position interface, the
encoder simulation output may not be able support a marker pulse
output (e.g. SC EnDat or SC SSI device types). Pr

03.086

shows the

status of the encoder simulation output indicating whether the output is
disabled, no marker pulse is available or full encoder simulation is
available.

When using the P1 and P2 position interfaces and the encoder
simulation output together, the P2 position interface uses alternative
connections on the 15-way D-type connector. Pr

03.172

shows the

status of the P2 position interface and indicates if alternative
connections are being used for the P2 position interface.

Encoder type

Pr 3.038 setting

Quadrature incremental encoders with or without
marker pulse

AB (0)

Quadrature incremental encoders with UVW
commutation signals for absolute position for
permanent magnet motors with or without marker
pulse

AB Servo (3)

Forward / reverse incremental encoders with or
without marker pulse

FR (2)

Forward / reverse incremental encoders with UVW
commutation signals for absolute position for
permanent magnet motors with or without marker
pulse

FR Servo (5)

Frequency and direction incremental encoders
with or without marker pulse

FD (1)

Frequency and direction incremental encoders
with UVW commutation signals for absolute
position for permanent magnet motors with or
without marker pulse

FD Servo (4)

Sincos incremental encoders

SC (6)

Sincos incremental with commutation signals

SC Servo (12)

Heidenhain sincos encoders with EnDat comms
for absolute position

SC EnDat (9)

Stegmann sincos encoders with Hiperface comms
for absolute position

SC Hiperface (7)

Sincos encoders with SSI comms for absolute
position

SC SSI (11)

Sincos incremental with absolute position from
single sin and cosine signals