TECHNICAL INFORMATION
73
87-900-988-01 (B)
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
at high speed 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 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, requires a
closed contact.
When the contact is closed, the turbopump and
the interconnected devices are stopped until
the operator:
- give the Start command (Local Mode);
- give the Stop command and Start command
(Remote Mode).
NOTE
Pin 3-8 must be shorted to allow the Turbo-V 3 KT
Rack Controller 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
Connection J2
Logic Output Interconnections
Logic output connector
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
2
) 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.
The following figure shows a typical logic output
connection (relay coil) but any other device may be
connected e.g. a LED, a computer, etc., and the related
simplified circuit of the controller.
8
1
9
15
+ 24
1
8
9
15
Typical output connection open collector
+24 V
12
4