Varian PTB Turbo V 700 HT 969 9445 Notice D'emploi page 246

17 Technical Information
Interconnections
All the logic input to the controller must be connected at J-1 mating
connector. With the provided J1 mating connector (shipped with pin
3 and pin 8 shorted) make the connections with AWG 24, (0.24 mm )
or smaller wire to the pins indicated in the figure to obtain the
desired capability. The following table describes the signals available
on the connector.
Tab. 3
PIN
1-6
2-7
3-8
4-9
Pin 3-8 must be shorted to allow the Turbo-V 700HT pump to start if no interlock
NOTE
contact is connected. if, after starting the pump, the interlock contact opens, it
has no effect on the operation and the pump continues to turn.
The following figure shows a typical contact logic input connection
and the related simplified circuit of the controller.
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DESCRIPTION
Remote START/STOP optically isolated from the internal circuit, requires a
permanently closed contact (relay contact transistor, etc.). When the contact
closes. the turbopump starts, and when the contact opens. the turbopump is
stopped. With the remote mode operation selected, the front panel push-button
is inoperative.
Remote LOW SPEED optically isolated from the internal circuit, requires a
permanently closed contact (relay contact, transistor. etc.). When the contact
closes, the turbopump runs at low speed and when the contact opens, the
turbopump reverts to high speed mode. With the remote mode operation
selected, the front panel push-button is inoperative.
INTERLOCK optically isolated from the internal circuit, this signal can be used
to delay the starting of the turbopump. requires a permanent closed contact
before starting the turbopump.
SYSTEM OVERRIDE optically isolated from the internal circuit, this signal is
used to stop the pump in emergency condition, requires a closed contact.
When the contact is closed, the turbopump and the interconnected devices are
stopped.
Turbo-V 700HT Controller User Manual / 87-900-877-01 (F)