Instruction manual

Document: MAN00238A Page 13 of 28
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7, 8. High Voltage OFF Control (Input):
Connect to a normally closed (NC) set of isolated ("voltage free" or "dry") switch contacts.
Operation of these contacts must be momentary (i.e. the contacts stay closed until the switch is
operated, at which time they open briefly, and the contacts automatically return to the closed state
after an operation).
9, 10. External Interlock (Input):
Short these pins together to complete interlock loop.
11, 12. High Voltage ON Control (Input):
Connect to a normally open (NO) set of isolated switch contacts. Operation of these contacts
should be momentary, but an alternate action switch is acceptable.
13. Remote HV ON Monitor (Output):
This signal is +5VDC when HV is ON and is +0VDC when HV is OFF.
14. Common Pin for High Voltage ON Control and Inhibit Command (Input):
Connect to return for Remote HV ON Monitor and Inhibit Command signals.
15. Inhibit Command (Input):
This input is used to prevent high voltage from being turned on in any mode of operation. By
maintaining +5VDC on this pin (TTL high state), high voltage is prevented from being turned on
by the front panel pushbutton or the User Interface, and will terminate high voltage if in the ON
state.