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50
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SSC-1500 Part Revolution Solid-State Control
SECTION 4—PROGRAMMING
HOW TO RUN THE REFERENCE CYCLE
Select the
ON
position of the program OFF/ON selector switch. One of
the MAIN PROGRAM SCREENS will be displayed.
On the MAIN PROGRAM SCREEN, use
↓
and
↑
on the keypad to scroll
through the program options. Press
ENTER
when the pound symbol (#)
is next to SYSTEM SETUP. The security code screen will be displayed.
See Figure 4.30. You will be prompted to enter the security code.
Press
ESC
to stop and return to the MAIN PROGRAM SCREEN. Press
BKSP
to backspace or press
CLR
to delete the entry and start over.
Press
ENTER
when finished.
SYSTEM SETUP
The SSC-1500 press control has a system setup screen that is used to automatically zero the resolver, set the motion reference threshold,
automatically set the sync switch position, restore the factory default settings, program the security code, and program the network settings.
AUTO-ZEROING THE RESOLVER
If the resolver is mounted correctly, with the press at TDC (top dead center) and the keyway facing up and perpendicular to the base, it should be
very close to its physical 0° point. However, since it is most likely a few degrees off, the resolver will be automatically zeroed, which will reset it to
0°, regardless of where its physical 0° point is located. This will provide the control with more accurate angle settings and readings.
THE MOTION REFERENCE THRESHOLD
The motion reference threshold is the amount of time the control takes to see motion when the press is stroked. It is used to detect chain breakage,
sprocket failure, or uncoupling of the resolver.
When the press setup is run, the control measures the amount of time the press takes to go from 0 to 4 SPM (strokes per minute). This is because
any speed less than 4 SPM is not considered as normal motion by the control. This number is then doubled to allow for inconsistencies of the
press. Every time a stroke is started, the control looks for motion within this amount of time. If motion is not seen within this amount of time, a fault
message will be displayed.
THE SYNC SWITCH
The sync switch is an optical pulser inside the resolver that provides redundancy in the resolver. It monitors and crosschecks for mechanical or
electronic failures within the resolver.
The pulser has a physical cam with a 30° window that is set to activate at 165° and deactivate at 195°, in relation to the resolver’s physical 0°
point (mounted with the keyway up, perpendicular to the base). The sync switch should not come on between 300° and 60°. If it does, the press
setup will fail, and a fault message will be displayed. The keyway on the resolver will have to be rotated so the sync switch does not come on
between 300° and 60°.
When the press setup is run, the pulser will record the on and off angles of the sync switch. These angles, called sync on and sync off, will then
be displayed on the screen. On every subsequent stroke of the press, the control will watch for the sync switch to come on and off at the same
angles, +/- 2.5°.
THE SECURITY CODE
The security code is user-programmed up to four (4) numbers. This code is required to enter the BRAKE MONITOR, SYSTEM SETUP, ANGLE
SETTINGS, TIMED SETTINGS, OPTIONAL MODES, and VARIABLE SPEED SETTINGS PROGRAM SCREENS. It is also required when the total counter
is cleared and when the factory default settings are restored.
Figure 4.30
Security Code Screen
ENTER SECURITY CODE
_ CODE
(Continued on next page.)
