Chapter
Troubleshooting
4
4-5
1.
Remove all control wires.
2.
Remove six screws as shown in Figure 4.5.
3.
Unplug control module from power modules by pulling forward.
CAUTION:
When removing control module make sure power module
pins do not bend. Make sure pins are not bent prior to installing control
module.
!
The gold interconnection pins on the power poles are protected with a special
contact lubricant.
Do not clean or wipe these pins.
This contact lubricant is
necessary for proper operation. Inspect each pin prior to assembly of the control
module. If the lubricant is missing, apply a thin film of the recommended contact
lubricant.
The Allen-Bradley approved contact lubricant is NYOGEL 759G, manufactured by
William F. Nye, Inc., Specialty Lubricants, New Bedford, MA 02742 U.S.A.
To install control module, follow the reverse order for removal.
Figure 4.5 - Removal of Control Module
(1)
(2)
If a power module needs to be checked, use the following procedure:
WARNING:
To avoid shock hazard, disconnect main power before
working on the controller, motor, or control devices such as Start/Stop
push buttons.
!
CAUTION:
Make sure that wires are properly marked and DIP switch
settings are recorded.
!
1.
Disconnect ALL power from the controller.
2.
Remove six screws as shown in Figure 4.5.
3.
Unplug control module from power modules by pulling forward.
4.
Using an ohmmeter, measure the resistance between the line and load terminals
of each phase on the controller. The resistance should be greater than 10,000
ohms.
5.
Measure resistance between pins 1 and 2. Resistance should be 19,000 ohms,
+/–5%.
6.
Measure resistance between pins 7 and 8. Resistance should be 19,000 ohms,
+/–5%.
Control Module
Removal
(continued)
Power Module
Resistance Check
Содержание Allen-Bradley SMC-PLUS Bulletin 150
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