1128500 WPC 2000 User Manual
3-4 Initialization, Setup, and Checkout
This procedure returns the following WPC 2000 parameters to their factory settings:
• Stop-time Limit–Set to 500 milliseconds. When you begin operating your press, you must
adjust this setting (see Setting the Stop-time Limit, page 3-16).
• Start-time Limit–Set to two times the Start Time measured by WPC 2000 on the first stroke
after the system has been initialized. The Start Time is the interval between the closing
(turning on) of the output relays on the DSV/Lockout Relay board, which provides the
signal for the Dual Safety Valve (DSV) to energize, and the resolver signal, which indicates
that the crankshaft has begun to turn. The greater part of this interval is the time it takes for
the clutch mechanism to activate and engage.
The Start-time Limit allows WPC 2000 to detect resolver drive failure. When the
measured Start Time exceeds the Start-time Limit, WPC 2000 sends a Stop signal to the
press and displays fault code F79 (see Loss of Rotation, page 5-17).
There are times when you may need to initialize only the Start-time Limit, such as during
troubleshooting (see page 3-5 for instructions).
• Resolver Zero Setting–Set to zero.
Re-zeroing the Resolver
If you need to zero the resolver without re-initializing the Start-time and Stop-time limits,
follow these steps:
1. Verify that your press is at top dead center (TDC), using a dial indicator or other means.
TDC is considered to be any position between 358° and 2°. Inch the press to TDC if
necessary.
2. Turn off power to the WPC 2000.
3. Press and hold the Reset/Select button and turn power to the WPC 2000 back on. When
the message “rES” appears in the LED display (see Figure 3-3), release the key.
When you use this procedure to zero the resolver, WPC 2000 electronically adds or
subtracts any offset between the resolver and the crankshaft, so the resolver always knows
Figure 3-3. WPC 2000 Display Showing “Resolver Zeroed” (“rES”) Message
BRAKE WARNING
INTERRUPTED STROKE
TOP STOP ANGLE
AUTO CARRYUP
STOP TIME LIMIT
MICRO-INCH
STOPPING TIME
STOPPING ANGLE
90
° STOP TEST
COUNTER
COUNTER PRESET
ANGLE / SPM
Resolver Zeroed message
cam on angle cam off angle
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