Next Advance SP1070-M - Manual (Page 35)

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SP1000 series operator’s manual
Manual SP1000 series 28
Phase Function Rate Volume Direction
7 RATE 300.0 ml/hr 1.5 ml Infuse
Phase Function
8 BEEP
Phase Function
9 LP:ST
Phase Function
10 PS:60
Phase Function Rate Volume Direction
11 RATE 500.0 ml/hr 3.75 ml Infuse
Phase Function
12 LP:03
Phase Function Rate Volume Direction
13 RATE 900.0 ml/hr 17.25 ml Withdraw
Phase Function
14 BEEP
Phase Function
15 PS:00
Phase Function
16 LP:EN
9.4.5 Example 5: Control from a High-Low Pressure Sensor
10
25
m
l/h
r
Pumping
Rate
Program
Output Pin
Event Input
Pin
Pressure high sensor
Pressure low sensor
Pressure trigger points
This example demonstrates a Pumping Program whose control depends on an external sensor. Assuming a
pressure sensor that is configured to detect a high pressure point and a low pressure point, the Pumping
Program individually selects whether it will react to the high or low pressure point.
The “Program Output” pin on the TTL I/O connector (pin 5) is used to select the high or low pressure
point. When low, the low pressure point is selected (PH:01), and when high, the high pressure point is
selected (PH:05). The Program begins by infusing continuously at 10.0 ml/hr (PH:02), while a background
trap is set for the low pressure point (PH:03). To create a delay when the pressure sensor is switched from
high pressure to low pressure when the “Program Output” pin is set, a small volume is pumped (PH:02, 06)
before the background traps are set.
When the low pressure trap is triggered, the pump sets the high pressure trap (PH:07) and begins to
increment the flow rate. The flow rate is incremented in 1.0 ml/hr steps with every 0.25 ml dispensed
(PH:08-10). If the high pressure trap hasn’t as yet been triggered, the flow rate will max out at 25.0 ml/hr
while waiting for the high pressure trap (PH:11). When the high pressure point is reached, the pump
immediately will drop down to 10.0 ml/hr (PH:02), and once again wait for the low pressure point.