Rockwell Automation 23P PowerFlex DC Stand Alone Regulator and Gate Amplifier - Manual (Page 21)

Rockwell Automation Publication 23P-UM001D-EN-P - July 2012 21
Stand Alone Regulator Installation, Wiring and Configuration Chapter 2
Table 4 - Recommended Field Power Module Bridge Input Fuses
The recommended fuse holder is a Cooper-Bussman, CH222D or equivalent - to
accommodate 22 mm x 58 mm fuses.
Safety Ground (PE)
The Safety Ground - PE must be connected to system ground. Ground
impedance must conform to the requirements of national and local industrial
safety regulations and/or electrical codes. The integrity of all ground connections
should be periodically checked.
For installations within a cabinet, a single safety ground point or ground bus bar
connected directly to building steel should be used. All circuits should be
grounded independently and directly to this point/bar.
AC/DC Voltage and Motor
Armature Voltage Feedback
Wiring
The SAR requires AC feedback connections to connector KP (terminals U, V,
and W) from the incoming line to monitor the incoming voltage level and
establish the SCR gate firing sequence relative to the AC line. DC feedback
connections to connector KP (terminals C and D) are required to monitor the
voltage output from the DC power module. The combined information from the
AC and DC feedback inputs is used to determine if the SCRs are firing properly.
See
Figure 4 on page 19 for recommended wiring for a typical SAR interface to
S6R.
Fuses are required between the DC output power wiring on the DC power
module to connector KP on the SAR. This will limit the current to the regulator
in the event of an internal fault in the SAR. The recommended fuse types are
shown in
DC Feedback Fusing Requirements on page 22 .
SAR Field
Bridge Rating
Fuse Type:
Bussmann
Ferraz Shawmut Siba
40 A FWP-50A22Fa A70QS50-22F 5014006.50
70 A FWP-100A22Fa A70QS100-22F 5014006.100