Next Advance SP1800 - 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