Varian 969-9447, Instruction Manual

Page: 78 / 93

TECHNICAL INFORMATION
7
4 87-900-905-01 (
I
)
PIN DESCRIPTION
3-11
∗
START S1 signal 24 V, 60 mA, optically
isolated output (pin 11 positive, pin 3
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.
4-12
∗
START S2 signal 24 V, 60 mA, optically
isolated output (pin 12 positive, pin 4
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.
5-13
∗
OVERTEMP. signal 24 V, 60 mA, optically
isolated output (pin 13 positive pin 5 negative).
The output Voltage will be present when a fault
condition is displayed on the front panel
display, with only in an overtemp condition
6-13
∗
FAULT signal 24 V, 60 mA, optically isolated
output (pin 13 positive pin 6 negative).
The output Voltage will be present when a fault
condition is displayed on the front panel
display, with exception of an overtemp
condition
7-14 Analog output voltage (0 - 10 V) of pump
speed (pin 7 positive, pin 14 negative).
8-15 Analog output Voltage of DC current drawn by
the turbopump (pin 8 positive, pin 15 negative).
1 Vdc proportional to 1 A.
9-10
∗
Flow meter alarm, the flow value remained
below the threshold for 10 seconds or more.
∗
Open collector type contacts
Connection J7
Accessories and Options Interconnections
J7 connectors
CAUTION!
The output voltage of the connector J7 is 120 Vac and
the maximum current is 1A. Do not connect this plug to
a device with a leakage current greater than 1.75 mA.
The 120 Vac, 1 A maximum (independent of line
Voltage) output Voltage is present when the main
power switch is set to 1 position and after START push-
button is pressed and will remain present until a fault
condition is displayed on the front panel display or the
turbopump is stopped.
The connector J7 is for vent device, forepump
connector coils, pump cooling fan etc.
To make connections, remove the plug and wire the
pins (maximum wire size 18 AWG, 1 mm
²
) as indicated
in the figure to obtain the desired capability.
NOTE
Forepump relay coil is an independent user supplied
item.
Connection J10
Controller-to-Pump Connection
A five-meter long cable is provided to connect the
controller to the pump. The following figures show the
controller output connector configuration where pins:
•
A-F = upper bearing sensor
•
B-C-D = 54 Vac 3-phase output to pump motor
stator
•
E = ground
•
A-G =lower bearing sensor
Controller-to-pump connector
(applicable to model 969-9447 and 969-9547)