1130 Actuators
Valve drivers
4 of 12
Jun 2001
Valves
Agilent 6890 Gas Chromatograph Service Manual
Valve drivers
The 6890 GC provides keyboard control for up to eight valve drivers which
are named Valve 1 through Valve 8.
Table 1130-1 6890 GC Valve Designations
There is a BCD input for controlling a multiposition valve. If a valve is
configured as a multiposition valve and the BCD is connected to this valve, a
position can be selected directly from the keyboard.
Valve Driver Purpose
Valves 1–4 24 volt, 13 watt Normal valve operation
Valves 5–6 24 volt, 100 mA Relays/low power devices
Valves 7–8 48 Vdc or 48 Vac rms Contact closures
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