Step 4: configure the new pulse transformer board, Pulse transformer board fir3-xx rev. “l” and lower, Sizing resistor configuration – Rockwell Automation 20P PowerFlex DC Drive - Frame C Pulse Transformer Circuit Board User Manual

Page 11

Rockwell Automation Publication 20P-IN010C-EN-P - February 2012

PowerFlex DC Drive Frame C Pulse Transformer Circuit Board

Step 4: Configure the New

Pulse Transformer
Board

The Pulse Transformer circuit board must be configured to match the drive size
(armature output current and HP rating). The steps required to complete the
configuration are different based on the revision code of the board. See either,

Pulse Transformer Board FIR3-XX Rev. “L” and Lower

below, or

Pulse

Transformer Board FIR3-XX Rev. “M” and Higher on page 13

Pulse Transformer Board FIR3-XX Rev. “L” and Lower

1. Cut and remove the appropriate sizing resistor(s) (if necessary) from the

Pulse Transformer board based on the drive size. Refer to

Table 1 -

Table

2 -

in the

Sizing Resistor Configuration

section on

page 11

for the

appropriate configuration.

Sizing Resistor Configuration

The tables below indicate the value of the designated resistor (R1 - R5) when left
in place on the Pulse Transformer board, or indicate “Remove” when the resistor
should be cut off and removed from the board. “–” indicates that this resistor is
not contained on the Pulse Transformer board for the designated drive size.

Table 1 - 230V AC Input Drives

Table 2 - 460V AC Input Drives

IMPORTANT

This procedure requires a multimeter that measures resistance to thousandths
of an ohm.

Drive Current

Rating Code

Amps

AC Line

Amps

521

426

150

–

Remove

5.36

Drive Current

Rating Code

Amps

AC Line

Amps

495

404.4

300

–

Remove

5.36

667

544.9

400

–

5.36

Sizing resistors are located in the center
of the Pulse Transformer circuit board.