SECTION 6 — OPERATING CONSIDERATIONS
SSC-500 Hydraulic Press Solid-State Control
Rockford Systems, LLC
Call: 1-800-922-7533
35
(Continued on next page.)
SSC-500 Operation Checklist
1.
Is all wiring to the machine, the solid-state control module, and keypad/display correct when verified with the drawings sent with the
solid-state control? ..........................................................................................................................................................
Y
or
N
2.
When powering up the solid-state control module, do the five (green) LEDs
(Power and CPU status) on the front of the control module turn on? ...................................................................................
Y
or
N
3.
Does the “
POWER-ON
” screen display the message:
“SAFEGRD IN PLACE”
when the main power disconnect switch is turned on?
............................................................................................................................................................................................
Y
or
N
4.
In normal run modes, such as SINGLE, does the machine make cycles without any faults appearing on the display? ............
Y
or
N
Production Mode Of Operation
During production, with the machine in the selected run mode of operation, the screen can display information. This information can be displayed
by pressing the
t
and
s
buttons on the keypad. The display options are as follows:
1.
MODE- STOP / UP / DOWN
2.
STOP TIME
3.
STROKE COUNTER
4.
BATCH COUNTER
Machine Shut Down
When the machine is ready to be shut down, follow this sequence:
(1)
Shut off the main motor starter.
(2)
Turn off the main power disconnect switch.
Electrical Troubleshooting
All troubleshooting, as well as installation, must be performed by qualified and properly trained personnel. Also,
when a defective component is found, do not operate the machine until that component has been replaced with
an exact replacement part.
1.
This procedure is written as a general guide for troubleshooting most hydraulic control systems. In all cases, please refer to the individual control
wiring schematic for particular test points and terminal numbers.
2.
Each control system may be slightly different depending on the various functions provided. Be sure to follow the schematic and select the proper
modes of operation when troubleshooting.
TROUBLESHOOTING OUTLINE
Use the control drawing schematic in conjunction with the following troubleshooting outline:
1. No Ground Light Illumination - Possible Causes:
No Ground Connection
If the ground connection checks OK, the ground light should be on.
If it is still not on, replace the light.
No Voltage
No line voltage - check the line voltage on the transformer primary.
No control voltage - check transformer primary connections (wiring) and the secondary for 120 VAC.
Fuse blown - replace with the proper size and amperage per the control drawing.
Using an ohm meter, locate the reason for the blown fuse before reapplying power.
2. Motor Does Not Start - Possible Causes -
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 miscellaneous interlocks.
Motor starter does not energize.
Motor starter operating coil is not 120 VAC.
Motor overload tripped, no heaters or improperly rated heaters or overloads.
Motor start/stop push buttons improperly wired or defective.
Motor starter contact defective.
Motor should start if the above checks OK. If the motor fails to continue to run when the start button is released, check the motor starter
holding contact for proper wiring and function.
