Dc fan system test – Rockwell Automation 20Y PowerFlex 700H, 700S, and 700AFE Drive Fan Systems, Frames 9...14 User Manual
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Rockwell Automation Publication PFLEX-IN029B-EN-P - August 2014
Appendix A
PowerFlex 700H and 700S Diagnostic Procedures
DC Fan System Test
Complete the following steps to test the DC fan system.
1.
Connect an external 500V DC source, through two fuses, similar to those
on the drive power structure (Ferraz ATQ8), to connector X2 (+DC to
pin 3 and –DC to pin 1) on the fan inverter circuit board.
2.
Connect X3 and X8 to a test fixture that incorporates 2 switches and
appropriate interconnection wires. SW1 between X3, pins 2 - 4 and SW2
between X8, pins 3 - 5.
3.
Connect the fan inverter circuit board (terminal X81) to the DC fan.
4.
Carefully apply the 500V DC source.
5.
Evaluate the DC fan inverter circuit board in each of the switch
configurations and view the LED status and fan rotation against the states
in
. If the LED status and fan rotation is NOT consistent with the
table, the circuit board is not functioning and must be replaced. If the LED
status and fan rotation agrees with the table, the circuit board should be ok
and can be used or further evaluated.
Table 6 - DC Fan System LED Status and Switch States
Figure 42 - LEDs and Fan Connections Locations
6.
Remove the 500V DC source power.
7.
Wait a few minutes and verify power is not present with a DVM at the fuse
input.
8.
Remove the DC fan inverter circuit board from the test fixture.
Case #
SW1
(Next Fan Inv)
SW2
(Fan Control Enable)
Green LED
Yellow LED
Red LED
Comments
1
Closed
Closed
ON
ON
OFF
Fan running
2
Closed
Open
ON
OFF
ON
Fan stopped
3
Open
Closed
ON
OFF
ON
Fan stopped
4
Open
Open
ON
OFF
ON
Fan stopped