Bio-Rad BioFrac™ Fraction Collector - Manual (Page 32)

3 | System Configuration and Plumbing
24 | BioFrac Fraction Collector
To remotely control the drophead and diverter valve
1. Set up the fraction collection parameters as described in Chapter 6, LP/Econo
Mode Operation , on page 75. In LP/Econo mode, the remote instrument
controls all aspects of fraction collection.
2. Connect a BioFrac accessory cable (15-pin to bare wires; see Appendix B, Rear
Panel Connector Information , on page 85) to the I/O port on the back of the
fraction collector.
3. Connect the I/O port pin #1 (black wire) to the pin controlling the fraction
advances on the remote instrument.
4. Connect the I/O port pin #15 (blue/white wire) to the signal ground of the
remote instrument.
5. Connect system cable 7 (mini-DIN to bare wires; see Appendix B, Rear Panel
Connector Information , on page 85), to the REC connector on the back of the
fraction collector.
a. Connect REC pin #2 (orange wire) to the diverter valve control pin on the
remote controller.
Note: If you cannot control the BioFrac diverter valve remotely,
connect REC pin #2 (orange wire) to REC pin #8 (green wire). This
causes the BioFrac diverter valve to open when Engage is pressed on
the fraction collector (see LP/Econo mode in Chapter 4, The User
Interface , on page 35). If you cannot control the BioFrac diverter valve,
you will need to supply a diverter valve with your system. The Collect
port of the second diverter valve should be plumbed to the common
port of the BioFrac diverter valve.
b. Connect REC pin #8 (green wire) to the signal ground on the remote
controller.
6. On the BioFrac LP/Econo Main screen press Engage (F1). The BioFrac will now
wait for the fraction advance and diverter valve signals.