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PIN
DESCRIPTION
1-6
Remote START/STOP optically isolated from
the
internal
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.
2-7
Remote LOW SPEED optically isolated from
the internal circuit, requires a permanently
closed contact (relay contact, transistor.
etc.).
When
turbopump runs at low speed and when the
contact opens, the turbopump reverts to high
speed
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
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, requires a
closed contact. When the contact is closed,
the
turbopump
devices are stopped.
NOTE
Pin 3-8 must be shorted to allow the Turbo-V 550 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
circuit,
requires
the
contact
closes,
With
the
remote
mode
of
the
turbopump.
and
the
interconnected
Connection J2
Logic Output Interconnections
a
the
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 of DC current drawn by
the turbopump (pin 2 positive, pin 1 negative).
1 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 output (pin 12 positive, pin 5
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.
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
NORMAL operation is reached.
53
TECHNICAL INFORMATION
Logic output connector
DESCRIPTION
RS 232, until
87-900-873-01 (C)
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