Installation Instructions
Original Instructions
PowerFlex 525 Incremental Encoder Input
Catalog Number: 25-ENC-1
1 L1 L2 L3
I
Control Module Incremental
Back Cover Encoder Input
2
HTL/TTL DIP switches
0V
Voltage DIP switch DC+ DC– Wait three minutes after
0V shutdown for capacitors
to discharge to safe
voltage levels.
Note: HTL/TTL DIP switch has two positions configured as HTL.
The Voltage DIP switch 5V/12 selection is configured as 5V.
Mount the Incremental Encoder onto the Lock the Incremental Encoder onto the
3 Control Module Back Cover 4 Control Module Back Cover
Mounting catch
Locking tab
Note: Incremental Encoder Input is for PowerFlex® 525 only.
You can install both the communication adapter and optional
Incremental Encoder Input on the same Control Module Back Cover.
5 Attach the Control Module Back Cover How to Remove the Control Module Back Cover if Required
Incremental Encoder Input Incremental Encoder Input with optional
label (pre-attached) 25-COMM-D DeviceNet® adapter shown
Space for optional
communication adapter label
6 Wiring the Incremental Encoder
A A- B B- Cm +V n Maximum Wire Size Minimum Wire Size Torque
12V 5V HTL TTL (ON)
2.08 mm2 (14 AWG) 0.08 mm2 (28 AWG) 0.18…0.22 N•m (1.56…1.9 lb•in)
No. Signal Description I/O Connection Example I/O Connection Example
A Encoder A Single channel, pulse train or Encoder Power +12V DC
(250 mA)
A- Encoder A (NOT) quadrature A input. – Internal Drive +V
Encoder Power
Common
Cm
Power B-
Common to
B Encoder B – External SHLD
+
B
Quadrature B input. A-
to SHLD
Power Source External
B- Encoder B (NOT) Internal (drive) A
Power
Supply
Cm Power Return 12V DC, 250 mA
Internal power source 250 mA
+V 5…12V Power(1) (isolated). to Power Supply
Common
+V
Encoder Signal Cm
B NOT Encoder Signal +V to SHLD
DIP switch selects 12 volt or 5 volt – Single-Ended, B-
B – Differential, Cm
B NOT
power that is supplied at Dual Channel
B
A NOT Dual Channel
B-
B
Output A- B
terminals “+V” and “Cm” for the A
A A- A NOT
A
encoder. A
to SHLD
Set the position of the DIP
HTL/TTL DIP switches based on the type of Compatible Encoder Output Voltage
switches encoder signal used. You must set
all switches to the same position. Switch Position Low Level (UL) High Level (UH)
(1) If Encoder requires 24V power, it must be supplied by an TTL <1.5V >2.5V
external power source
HTL <3.5V >5V
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Publication 520-IN009D-EN-P - May 2021 | Supersedes Publication 520-IN009-EN-P-July 2014
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