Rockwell Automation SB3000 AC Power Modules User Manual
Page 53
Diagnostics and Troubleshooting
4-15
4.5.2 Replacing an IGBT Phase Module Assembly
Use the following procedure to replace an IGBT Phase module assembly (U, V, or W):
Step 1. Turn off and lock out AC input power.
Step 2. Wait ten minutes to allow the DC bus voltage to dissipate.
Step 3. Look at the built-in DC Bus Voltage meter. When the DC bus potential is
down to zero volts, open the SB3000 Power Module cabinet's doors and
measure the DC bus potential across the DC bus bars, 1247 A,B,C (+ bus)
and 1145 A,B,C (- bus), with an external voltmeter before working on the unit.
See figure 4.1.
Table 4.5 – Power Module Fuse Specifications
1
Fuse
Volts
Class
Type
Rating
Rockwell Part
Number
Torque Specifications
1FU
600
CC
KLDR
5 A
64676-29R
--
2FU
600
CC
CCMR
25 A
64676-72BB
--
3FU
600
CC
KLDR
3.2 A
64676-29P
--
F101
1000
Semiconductor
1000 A
64676-80P
41 Nm (30 lb-ft)
F102
1000
Semiconductor
1000 A
64676-80P
41 Nm (30 lb-ft)
F103
1000
Semiconductor
630 A
64676-79AZ
20.5 Nm (15 lb-ft)
F104
1000
Semiconductor
630 A
64676-79AZ
20.5 Nm (15 lb-ft)
F105
1000
Semiconductor
630 A
64676-79AZ
20.5 Nm (15 lb-ft)
+/- 15V PS*
250
--
F
1.8 A
Replace with
1.6A
64676-82U
--
+/- 24V PS**
250
--
T
2.5 A
64676-71P
--
+/- 24V PS***
250
--
F
2.0 A
64676-82V
--
25 KHz PS
11FU
12FU
600
CC
--
8 A
64676-30H
--
25 KHz PS
21FU
26FU
250
--
F
2 A
64676-66C
--
1. Fuse locations shown in figures 4.2, 4.3, and 4.4.
!
ATTENTION: DC bus capacitors retain hazardous voltages after input
power has been disconnected. After disconnecting input power, wait ten
(10) minutes for the DC bus capacitors to discharge, then look at the
built-in DC bus voltage meter. When the voltage is down to zero (0) volts,
open the cabinet doors and check the voltage across the DC bus bars,
1247 A,B,C (+ bus) and 1145 A,B,C (- bus), with an external voltmeter
to ensure the DC bus capacitors are discharged before touching any
internal components. Failure to observe this precaution could result in
severe bodily injury or loss of life.