User guide
Unidrive SP Short Form Guide 35
Issue Number: 2 www.controltechniques.com
Safety 
Information
Product 
Information
Mechanical 
Installation
Electrical 
Installation
Getting Started Basic parameters
Running the 
motor
SMARTCARD
Advanced 
parameters
Diagnostics
UL Listing 
Information
4.5.3 Encoder types
Table 4-1 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.
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










