Agilent Technologies TwisTorr 74 FS PCB 24 Bedienungshandbuch Seite 182

17 Technical Information
Installation
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The following figure shows a typical contact logic input connection
and the related simplified circuit of the controller.
Figure 10
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Pin 11 Error reset command. Should an operation fault be
detected (Pin 3 of J4 is ON), the pump is stopped. To reset the
fault you must connect pin 11 to ground (pin 15 of J4) for at least
one sec.
Pin 12 ON/OFF pump. To stop the pump you must connect pin
12 to ground (pin 15 of J4); to start the pump you must remove
the contact between pin 12 and ground.
Pin 15 Ground
Typical Logic Input
TwisTorr 74 FS PCB 24 Vdc Controller User Manual / 87-901-056-01
+5 V