Drive The External Fan - Agilent Technologies TwisTorr Medium-TMP Rack User Manual

Technical Information

Drive the External Fan

There are three different ways to drive the external Fan selectable via Front Panel
and via RS232/RS485:
1 Always ON
Setting WIN 143 = 0 (default value) the fan remains always ON (the value in
WIN144 is not considered).
2 Automatic Setting
WIN 143 = 1 the external fan is always ON during the Ramp-up status. In the
others status, the fan behavior depends only on WIN 144 value: WIN 144 = 1
external fan ON; WIN 144 = 0 external fan OFF that means that WIN 144
determines the Fan status when the pump reaches the "normal" status (Front
panel display HICOMP or HIFLOW).
3 Serial setting
WIN 143=2 the external fan is configured in serial mode, in this condition the
fan behavior depends only on WIN 144 value) WIN 144 = 1 external fan ON; WIN
144 = 0 external fan OFF. The WIN 143 default value is 0.
Agilent TwisTorr Medium-TMP Rack Controller User Manual 179