Mains And Input Signals; Output Signals; J16 Pump Connection - Varian Turbo-V 70 Instruction Manual

Mains and Input Signals

PIN
a8 GROUND power connection
a2 MAINS neutral connection
b2 MAINS line connection
a5 SIGNAL COMMON connection for all
input/output signals
a6-a5 Remote LOW
permanently closed contact (relay contact,
transistor etc). When the first time contact
closes, the turbopump runs at low speed and
when the contact opens, the turbopump
reverts to high speed mode.
a4-a5 R2 INTERLOCK, requires a
closed contact to set at infinite the run-up
time. After closure, when the contact is
reopened, the run-up time is set to zero
minutes.
b7-a5 Remote STOP signal, requires a closed
contact and it is used to stop the pump.
When the conract is closed, the turbopump
and the interconnected devices are stopped.
b8-a5 Remote RESET, requires a momentarily
closed contact for at least 0.5 seconds to
reset the pump after failure.
DESCRIPTION
SPEED, requires
permanent
Controller-to-pump cable

Output Signals

PIN
a5 SIGNAL COMMON connection for all
input/output signals.
b6-a5 ANALOG OUTPUT SPEED signal 0 to
+10 Vdc proportional to pump rotational
speed 0 to 75 KRPM.
a7-a5 VENT VALVE output voltage. +24 Vdc
a
without load; +6.5 Vdc with vent valve load
(430 ohm). The output voltage is present
when the turbopump is started, and will
remain present for about 5 more seconds
after the turbopump is stopped or after a
power failure.

J16 Pump Connection

The pin configuration of the cable that connects the
controller to the pump using a 0.5 mm
is shown in the following figure.
72
TECHNICAL INFORMATION
DESCRIPTION
2
(AWG 20) wires
87-900-870-01 (E)