Connection J2 - Logic Output Interconnections - Varian Turbo-V 150HT Bedienungshandbuch

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
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 front
panel push-button is inoperative.
3-8 INTERLOCK optically isolated from the internal
circuit, this signal can be used to delay the
starting of the turbopump. It requires a
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. It requires a
closed contact.
When the contact is closed, the turbopump
and the interconnected devices are stopped.
Pin 3-8 must be shorted to allow the Turbo-V150HT
pump to start if no interlock 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.
Typical logic input connection
front panel push-button
NOTE
Connection J2
Logic Output Interconnections
is
All the logic output from the controller must be
connected at P2 mating connector. With the optional
P2 mating connector make the connection with AWG
24 (0.25 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
1-2 Analog output Voltage proportional to the DC
current drawn by the turbopump (pin 2 positive,
pin 1 negative). 2 Vdc proportional to 1 A.
4-11 R1 signal 24 V, 60 mA, optically isolated
output (pin 11 positive, pin 4 negative). The
output Voltage will be present when the
rotational speed of the pump is higher than the
selected speed threshold.
5-12 LOW SPEED signal, 24 V, 60 mA, optically
isolated
negative). The output Voltage will be present
when the low speed mode is selected either
through the front panel the remote signal, or
RS 232/422/485.
6-13 START signal 24 V, 60 mA, optically isolated
output (pin 13 positive, pin 8 negative).
The output Voltage will be present when the
START push-button on front panel is pressed
or the remote start is present. or the function
has been requested by RS 232/422/485, until
NORMAL operation is reached.
53
TECHNICAL INFORMATION
Logic output connector
DESCRIPTION
output (pin 12 positive,
87-900-893-01 (C)
pin 5