WPC 2000 User Manual 1128500
Installation 2-31
Auxiliary Output 1
Auxiliary 1 is normally closed (N/C), or On. The output opens, or turns Off, when a fault
condition occurs, an E-stop string opens, or a light curtain is interrupted while the press is
running. The output can also be programmed to turn Off during an Interrupted Stroke (see
page 4-3 for an explanation of Interrupted Stroke).
Aux. Output 1 response to an Interrupted Stroke is controlled by option switch 8 on the WPC
2000 Main Processor board. Switch settings are shown in Table 2-6.
When switch 8 is set to OFF, Auxiliary Output 1 opens, or turns Off, at the occurrence of an
Interrupted Stroke. When switch 8 is set to ON, the output turns Off during an Interrupted
Stroke only when there is also a fault or Emergency-stop condition; otherwise, the output
remains On during an Interrupted Stroke. See Auxiliary Output 1 Response to Interrupted
Stroke, page 3-31 for additional details.
The switch 8 ON setting allows the press to be “inched” during an Interrupted Stroke, when
the WPC 2000 is in Two-hand Maintained Single-stroke mode. Normally, in Two-hand
Maintained Single-stroke, the operator must hold down the Run/Inch palm buttons until the
press reaches its Top-stop position in order to avoid another Interrupted Stroke. With switch 8
set to ON, the operator may release the Run/Inch buttons while inching the press to Top-stop
without initiating an Interrupted Stroke.
Auxiliary Output 1 can be wired to a customer-supplied control relay and used to stop
auxiliary equipment such as scrap choppers, conveyors, etc. when one of the conditions
described above causes the press to stop. When a warning beacon is connected to the control
relay, the beacon illuminates when a fault occurs and Aux. Output 1 opens.
Table 2-5. Auxiliary Output Wiring Connections and Change Conditions
Output
Pin #
(WPC 2000
Cntrl Bd.)
Normal
State
Change
State Change Conditions
Aux. 1 28 On (N/C) Off (or Open) • WPC 2000 fault
• E-stop string open
• Light curtain interruption
• Interrupted Stroke (controlled by
option switch 8–see Table 2-6)
Aux. 2 36 Off (N/O) On (or Closed) • WPC 2000 fault
• Interrupted stroke
• Key switch in Inch and DSV energized
Aux. 3 29 Off (N/O) On (or Closed) • DSV energized
Table 2-6. Option Switch 8 Settings for Auxiliary Output 1 State Change
Option Switch 8 Auxiliary Output 1 State Change during Interrupted Stroke
OFF Output turns OFF when an Interrupted Stroke occurs
ON Output remains ON during an Interrupted Stroke unless the Interrupted Stroke
is preceded by a WPC 2000 fault or an Emergency Stop, in which case the
output turns OFF
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