Next Advance SP1800 User Manual
Page 34
NEXT>>>ADVANCE
www.nextadvance.com
SP1600/1800 Programmable Syringe Pump
Publication #1200-02
29
9/15/04
Phase
Function
7
EV:01
Phase
Function
8
LP:ST
Phase
Function
Rate
Volume
Direction
9
INCR
1.0
0.25 ml
Infuse
Phase
Function
10
LP:14
Phase
Function
Rate
Volume
Direction
11
RATE
25.0 ml/hr
0.0 ml (off)
Infuse
8.4.6 Example 6: Automated Dispensing with Synchronization
The following is an automated dispensing Program for a SP1600/SP1800 syringe pump equipped with a
‘Syringe Filled Sensor’ (part #ADPT-1) attached to the TTL I/O connector, and a valve system to refill the
syringe from a reservoir. It is also assumed that the ‘Power Failure’ mode is enabled.
After a power fail restart, the pusher block is in an unknown position, making it impossible for an
automated dispensing system to regain synchronization. With the Syringe Filled Sensor, the following
Pumping Program will automatically synchronize the dispensing system, then continue with the normal
dispense.
The first 2 Phases set an event trap for the Syringe Filled Sensor and refills the syringe until the sensor is
triggered. When the sensor triggers the event, the pump’s pusher block will be synchronized with the
Pumping Program. It is assumed that the sensor is positioned to refill the syringe with 60 ml. A withdraw
volume of 61 ml is set as a safety feature.
After the syringe is refilled, one 5 ml dispense is made every 5 hours. After 12 dispenses, the syringe is
refilled using the sensor again.
Phase
Function
1
EV:03
Phase
Function
Rate
Volume
Direction
2
RATE
1000.0 ml/hr
61 ml
Withdraw
Phase
Function
3
LP:ST
Phase
Function
Rate
Volume
Direction
4
RATE
200.0 ml/hr
5.0 ml
Infuse
Phase
Function
5
LP:ST