Rockwell Automation B Series User Manual

216 Rockwell Automation Publication 520-UM001I-EN-E - July 2016
Appendix E Encoder/Pulse Train Usage and Position StepLogic Application
Encoder Interface
The incremental encoder option card can source 5 or 12 volt power and accept 5,
12 or 24 volt single ended or differential inputs. See Appendix B
for ordering
information.
Wiring Notes
The encoder option card can supply 5V or 12V power (250 mA maximum) for
an encoder. Be sure the DIP switch is set properly for the encoder. In general, 12V
will provide higher noise immunity.
The encoder can handle 5V, 12V, or 24V inputs, but the pulse train can handle
only 24V inputs. The inputs will automatically adjust to the voltage applied and
no additional drive adjustment is necessary. If a single-channel input is used, it
must be wired between the A (signal) and A- (signal common) channels.
IMPORTANT
Only the 25-ENC-1 Encoder will work properly in the PowerFlex 525 drive.
Installing an incorrect encoder card, such as the PowerFlex 527 25-ENC-2 will
cause damage to the PowerFlex 525 drive.
Encoder Wiring Examples
I/O Connection Example I/O Connection Example
Encoder Power
– Internal Drive
Power
Internal (drive)
12V DC, 250mA
Encoder Power
– External
Power Source
Encoder Signal
– Single-Ended,
Dual Channel
Encoder Signal
– Differential,
Dual Channel
+V
Cm
B-
B
A-
A
12V 5V

No. Signal Description
+V 5...12V Power
(1)(2)
(1) When using 12V Encoder power, 24V I/O power, maximum output current at I/O Terminal 11 is 50 mA.
(2) If Encoder requires 24V power, it must be supplied by an external power source.
Internal power source 250 mA (isolated).
Cm Power Return
B- Encoder B (NOT)
Quadrature B input.
B Encoder B
A- Encoder A (NOT)
Single channel, pulse train or quadrature A input.
A Encoder A
 Output DIP switch selects 12 or 5 volt power supplied at terminals “+V” and “Cm”
for the encoder.
Common
+12V DC
(250 mA)
A
A-
B
B-
Cm
+V
to SHLD
+
Common
External
Power
Supply
to
SHLD
A NOT
A
B
B NOT
to SHLD
to Power Supply
Common
A
A-
B
B-
Cm
+V
to SHLD
A NOT
B
A
B NOT
A
A-
B
B-
Cm
+V

Rockwell Automation B Series Specifications

General

Brand	Rockwell Automation
Model	B Series
Category	Industrial Equipment
Language	English