D-Series Syringe Pumps - Isco

D Series Syringe Pumps
Section 3 Single & Multiple Independent Pump Operation
3.9.1 Compatibility The hardware for this option includes a rear panel mounted
circuit board which is compatible with the D Series 68-1240-026
controller only.
3.9.2 Hardware Three 12-bit digital-to-analog outputs represent the pump flow
rates scaled to the maximum flow rate limits similar to the analog
inputs. The three jumper selectable output ranges are 0 to 5V, 0 to
10V, and 5V to 5V. These jumpers are accessed by removing the
controller case top. Four outputs are provided on the circuit board
and each output can be set to a different range, see Figure 3-9.
The controller is shipped with all jumpers set for the 0 to 10V
range. If less than three pumps are connected to the controller,
pump volume delivered is provided by the extra outputs. The
combinations are shown in Table 3-2.
The MAX FLOW setting accessed via the LIMITS key, sets the
fullscale flow rate. (See Section 3.5.4). For example, if the voltage
output range is 5 volts and the desired output scale is 1 Volt per
10 ml/min, the MAX FLOW limit should be set to 50 ml/min. The
MAX FLOW setting may not exceed the pump specification.
The volume analog outputs are not adjustable. The full-scale
range represents one pump stroke. These outputs represent
volume delivered, with the maximum output at cylinder empty.
3.9.3 Current Loop Output The pump controller can be configured to provide a 4–20 mA
current loop output. Contact the factory for more information on
this option.
Figure 3-9 Output range selection jumpers
3-20