Rockford Systems, LLC.
Call: 1-800-922-7533
71
SSC-1500 Part Revolution Solid-State Control
SECTION 6—OPERATING CONSIDERATIONS
TROUBLESHOOTING OUTLINE
Use the control drawing schematics in conjunction with the following troubleshooting outline:
NO VOLTAGE—POSSIBLE CAUSES:
1.
Check the line voltage on the transformer primary with a volt meter.
2.
Check for correct transformer primary connections (wiring) and the secondary for 120 V AC using a volt meter.
3.
A primary or secondary fuse may be blown—replace the fuse with the proper size, type, and amperage per the control drawing. Using an ohm
meter, locate the reason for the blown fuse before reapplying power.
MOTOR DOES NOT START—POSSIBLE CAUSES:
1.
Open electrical interlocks. The circuit can be arranged to accommodate machine protective electrical interlocks, overload interlocks, and safety
block interlocks. These interlocks are strategically located to prevent machine operation when open. Please refer to the schematic for the location
of the various interlocks.
2.
Motor starter does not energize.
Motor starter operating coil may not be 120 V AC.
M otor overload may have tripped out; this may have been caused because no overload is present or because of an imporperly rated overload.
Motor START/STOP push buttons may be improperly wired or defective.
Motor starter contact may be defective.
• The motor should start if the above checks OK. If the motor still fails to run when the start button is released, check the motor starter holding
contact for proper wiring and function.
MACHINE WILL NOT STROKE—POSSIBLE CAUSES:
Clutch will not engage and the brake will not release
• Air supply may be off.
• Air pressure may be insufficient.
Dual solenoid air valve will not energize
• Check for proper installation and wiring.
• Solenoid coils may be open.
LIGHT CURTAIN (IF FURNISHED) IS NOT FUNCTIONING—POSSIBLE CAUSE:
Fuses F5 or F6 may be faulty (if light curtain MTS contact is wired in to P7)
PLS NOT FUNCTIONING—POSSIBLE CAUSE:
Fuses F3 or F4 may be faulty
