40 Rockwell Automation Publication 20A-IN009E-EN-P - January 2015
PowerFlex 70 Adjustable Frequency AC Drive
For detailed information on installing and wiring a safety relay system, refer to
the DriveGuard Safe Torque Off Option (Series B) for PowerFlex 40P and
PowerFlex 70 AC Drives User Manual, publication PFLEX-UM003
.
Encoder Interface Option (Only Enhanced Control)
The optional PowerFlex encoder interface can source 5 volt or 12 volt power and
accept 5 volt or 12 volt single-ended differential inputs. The factory default
setting is 12 volts. Note: The drive is not CE EMC certified when the encoder
option is installed.
Table 19 - Terminal Description
If the Safe Torque Off board is removed from the drive, pins 3
and 4 of the Safe Torque Off connector must be jumpered for
the drive to run. If the Safe Torque Off board or the jumper is
not installed, and the drive is commanded to run, an F111
Enable Hardware fault occurs.
No. Signal Description
1 5V or 12V power Internal power source 250 mA (isolated).
2Power return
3 Encoder B (NOT) Single channel or quadrature B input.
4 Encoder B
5 Encoder A (NOT) Single channel or quadrature A input.
6 Encoder A
6
1
= 12V
= 5V
= 12V
= 5V
20A-ENC-1
0.8…1.1 N•m
(7…10 lb•in)
Receive Voltage
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