1128500 WPC 2000 User Manual
B-2 Specifications for User-built Operator Stations
Switch Requirements
Switches used for the Run, Emergency-stop, Top-stop and Prior Act buttons must meet the
specifications shown in Table B-2:
A Run-button timer is built into the WPC 2000. If the Run buttons on a standalone Operator
Station are not pressed within the 1/2-second “palm time” (“synchronous time” in ANSI
terminology) or the Run buttons on multiple Op. Stations are not pressed within the 5-second
“concurrent time,” the press will not cycle. See the description of the “Palm Time Lamp and Switch”
on page 1-3 and Switch 6 – Selecting Concurrent Time for More Than Two Operator Stations,
page 3-33.
Table B-2. Specifications for Operator Station Switches
Switch Specifications
Run NEMA 12 or 13, UL rated
1-NC/1-N0 single contact block with transfer-style contacts. One contact bar
moves from N/C contacts to the N/O contacts to ensure that the N/C and N/O
contacts cannot be closed simultaneously.
(Allen Bradley AB-S 800T-D1JA, Square D 9001KR25GH13, or equivalent)
Must be guarded against accidental operation per ANSI and OSHA
requirements.
E Stop NEMA 12 or 13, UL rated
2-NC contacts, positive opening operation, “self-latching”
Top Stop NEMA 12 or 13, UL rated
2-NC contacts, positive opening operation
Prior Act NEMA 12 or 13, UL rated
1-NC with integral green pilot lamp for 24 Vdc operation. This lamp indicates
when the Prior Act timer is armed.
Must be guarded against accidental operation per ANSI and OSHA
requirements.
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