Agilent Technologies 6890 Series User Manual

193
Valve Control
The external valve drivers
Figure 30 Internal valve drivers
There is no direct relationship between the location of a valve in the valve box
and the driver that controls it. This depends on how the solenoids are wired and
the actuators are plumbed.
The external valve drivers
Valve drivers 5 and 6 control a current that may be used to drive a relay or other
low-power device. Valve drivers 7 and 8 switch a current from an external
source. Electrical details are in Table 22 on page 192.
These drivers, particularly Valve 7 and 8, may be used to control a motor driven
multiposition valve for stream selection.
All four of these drivers appear on the External Event connector on the back of
the GC.
Keyboard
or
Run time
program
or
Clock time
program
Connector V1
Solenoid wiring bracket
Connector V2
Connector V3
Connector V4
Internal valve
drivers (1 through 4)

Agilent Technologies 6890 Series Specifications

General

Brand	Agilent Technologies
Model	6890 Series
Category	Laboratory Equipment
Language	English