WPC 2000 User Manual 1128500
Installation 2-3
Installation Guidelines
Observe the following guidelines when installing WPC 2000, referring to Figure 2-1,
page 2-4 when necessary.
• For AC wiring, use 16 AWG wire (14 AWG if required by local codes) with a minimum
75° C temperature rating. For other wiring, use 18 AWG with 600 V insulation.
• All signal grounds must run through the WPC 2000 Main Processor board. Use chassis
ground only for terminating cable shields.
• Run flexible, liquid-tight conduit for high voltage lines (120V power, relay circuits) to the
upper left knockout on the WPC 2000 enclosure.
• Never run wires for 120V and for lower voltages (such as 24V or 60V) inside the same
conduit. For example, the Operator Station cables should not share the same conduit with
120 Vac wiring. However, power and logic wiring for the light curtain or Dual Safety
Valve (DSV) can be run in the same conduit.
• Provide a dedicated 120V power circuit from the press control transformer to the WPC
2000 input power connection. Do not power any relays or solenoids from this circuit or the
auxiliary power terminals on WPC 2000. Doing so may cause erratic press shutdowns due
to electrical noise.
• Run one or two low-voltage conduits for the resolver wires to the knockouts on the bottom
of the WPC 2000 enclosure.
• Because WPC 2000 is rated NEMA 12 (protected against dust and oil), you must use
conduit of the same rating and make proper connections to ensure NEMA 12 protection.
• Make sure the WPC 2000 is properly grounded.
• All relays and solenoids controlled by WPC 2000 must be suppressed. Suppressors should
be installed across the load and as close to the load as possible. Never install a suppressor
across the relay contacts. The suppressors tend to fail shorted. In some cases, suppressors
are required in the Top-stop and Emergency-stop circuits. Additional suppressors (part
number 2238801) can be obtained from Wintriss.
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