Connection A (P1) - Logic Input Interconnections - Varian Turbo-V70 Manual De Instrucciones

Connection A (P1) - Logic Input Interconnections

P1 input connector
All the logic input to the controller must be connected
at J1 mating connector.
With the provided J1 mating connector (shipped with
pin 3 and pin 8 shorted) make the connections with
2
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.
PIN DESCRIPTION
1-6 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 hand held terminal push-button is
inoperative.
2-7 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 hand
held terminal push-button is inoperative.
3-8 INTERLOCK optically isolated from the internal
circuit, this signal can be used to delay the
starting of the
permanent closed contact before starting the
turbopump.
4-9 SYSTEM OVERRIDE optically isolated from the
internal circuit, this signal is used to stop the
pump in emergency condition,
closed contact.
When the contact is closed, the turbopump
and the interconnected devices are stopped.
turbopump, requires
requires a
Pin 3-8 must be shorted to allow the Turbo-V 70 pump
to start if
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.
Typical logic input connection
a
52
TECHNICAL INFORMATION
NOTE
no interlock contact
87-900-883-01 (C)
is connected.
+24 V