2 - Hardware Setup
Power and Electrical Considerations
Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
2 - 1
2
Hardware Setup
This chapter includes these sections describing the various parts of hardware
setup:
Power and Electrical Considerations
2.1
Power and Electrical Considerations
The XLP 6000 requires a 24V DC power supply with a current rating of at least
1.5A, provided through a DA-15 connector. Tecan Systems recommends using
one power cable for every two pumps to provide noise immunity, i.e., power
should not be daisy-chained to more than two pumps.
2.1.1
Choosing a Power Supply
The 24V DC supply for a single XLP 6000 should meet the following basic
requirements:
Output voltage: 24V nominal
Output voltage tolerance: ±10% maximum, ±5% preferred.
Well-regulated power supplies are recommended, as operating pumps below
24V will affect performance.
Output voltage regulation: ±1% with varying line (input voltage) and load
Output current (not including loads other than a single pump):
–
≥
1.5A for power supplies with minimal capacitance.
–
≥
850mA for power supplies with internal filter capacitance of at least 1000
µ
F per amp of output current
–
≥
850mA for power supplies with external capacitance of at least 1000
µ
F
per amp of output current (aluminum electrolytic capacitor preferred)
Output voltage ripple: 50mV rms maximum at full load
Conformance to required safety and EMI/RFI specifications
Voltage turn-on and turn-off overshoot: < 2 volts
Minimum current load (for switchers): see “Switching Power Supplies” in this
chapter.
To meet the above basic requirements, the supply must incorporate either linear
or switching regulation and must have adequate output filter capacitance.
