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38
Digitax ST User Guide
Issue: 5
Figure 4-15 Feedback cable connections
4.16 Encoder terminals
Figure 4-16 Location of encoder connectors on underside of drive
4.16.1 Encoder In connections
Table 4-19 Encoder types
* This feedback device provides very low resolution feedback and should
not be used for applications requiring a high level of performance
** The U, V & W commutation signals are required with an incremental
type encoder when used with a servo motor. The UVW commutation
signals are used to define the motor position during the first 120
°
electrical rotation after the drive is powered-up or the encoder is
initialized.
Drive encoder input converter connector
A 15-way D-type converter is available to provide a screw terminal
interface for encoder wiring, and a spade terminal for the shield.
Figure 4-17 Drive encoder input converter connector
Cable
Cable
shield
Twisted
pair
shield
Cable
shield
Twisted
pair
shield
Connection
at motor
Connection
at drive
Ground clamp or
grounding bracket on shield
Shield
connection
to 0V
Shield
connection
to 0V
Setting of
Pr 3.38
Description
Ab
(0)
Quadrature incremental encoder with or without marker
pulse
Fd
(1)
Incremental encoder with frequency pulses and direction,
with or without marker pulse
Fr
(2)
Incremental encoder with forward pulses and reverse
pulses, with or without marker pulse
Ab.SErVO
(3)
Quadrature incremental encoder with UVW commutation
signals, with or without marker pulse
Encoder with UVW commutation signals only (Pr
3.34
set
to zero)*
Fd.SErVO
(4)
Incremental encoder with frequency pulses and direction
with commutation signals**, with or without marker pulse
Fr.SErVO
(5)
Incremental encoder with forward pulses and reverse
pulses with commutation signals**, with or without marker
pulse
SC
(6)
SinCos encoder without serial communications
SC.HiPEr
(7)
Absolute SinCos encoder with HiperFace serial
communications protocol (Stegmann)
EndAt
(8)
Absolute EndAt serial communications encoder
(Heidenhain)
SC.EndAt
(9)
Absolute SinCos encoder with EnDat serial
communications protocol (Heidenhain)
SSI
(10)
Absolute SSI only encoder
SC.SSI
(11)
Absolute SinCos encoder with SSI
5
10
15
1
6
11
Drive encoder connector
Female 15-way D-type
Encoder
input
Buffered
encoder
output
If using the Drive Encoder Input Converter connector, the
Single Ended Encoder Interface or the ERN1387 Encoder
Interface protection to at least IP2X must be provided for the
connector.
WARNING
Summary of Contents for Digitax ST
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