Gilson 333 - Twin Pump Systems

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333/334 HPLC PUMPS | USER’S GUIDE
TWIN PUMP SYSTEMS
Twin Pump Systems
Two pumps may be connected in parallel, thereby doubling the programmed flow rate. In
theory, there is no limit to the number of pumps that can be connected in parallel, but the
twin system with two liquid streams is the most practical. The hydraulic outlet tubings are
connected together using a tee piece to increase the overall flow rate.
To set up 333/334 Pumps to operate in parallel, you must give each of the paralleled pumps
the same GSIOC ID: the Master 333 Pump has an ID = 1 as does its twin; the Slave 334 Pump
and its twin both have an ID = 2, and so on. The twinned pumps are connected together using
GSIOC cables.
When operating a twinned system, the commands from the controlling device go to each pair
of twins, so that they act in unison. The twinned pumps must have the same configuration as
their master pumps.
GSIOC
FROM
CONTROLLER
2
2
SW1SW2
SW2: BAUD RATE
SETTING
0
1
2
BAUD
EXTERNAL
9600
19200
SW1: UNIT ID = SETTING
TO
SLAVE
FROM
CONTROLLER
NO NC COM NO NC COM NO NC COM NO NC COM
OUTPUTS
DC OUTPUT
333
334
GSIOC
FROM
CONTROLLER
GSIOC
TO
SLAVE
GSIOC
FROM
CONTROLLER
2
2
SW1SW2
SW2: BAUD RATE
SETTING
0
1
2
BAUD
EXTERNAL
9600
19200
SW1: UNIT ID = SETTING
TO
SLAVE
FROM
CONTROLLER
NO NC COM NO NC COM NO NC COM NO NC COM
OUTPUTS
DC OUTPUT
333
334
GSIOC
TO
SLAVE
F
F
M F
F
M F
F
GSIOC
FROM
CONTROLLE
R
GSIOC
FROM
CONTROLLER
GSIOC
FROM
CONTROLLE
R
Figure 16
333/334 HPLC Pumps Used in Parallel