2 - Hardware Setup
Cabling
Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
2 - 3
2.1.3
Switching Power Supplies
Be sure to check carefully the minimum load requirement of the power supply.
Typically, switching supplies have a minimum load requirement of up to 10% of
the rated output current.
Note: The XLP 6000 idle current is less than 10% of the full running current.
For example, in a system with multiple XLP 6000 pumps, a 24V 5-amp switcher
with a minimum load less that 500mA may not provide sufficient current when the
XLP 6000 motors are idle and all other devices are in a low current state. If the
XLP 6000 is the only load on the 24V supply, a switcher should have a minimum
load specification of 50mA or less. An appropriate external power resistor can be
used to ensure that the minimum load is met.
2.2
Cabling
A single cable supplies both power and communications to each XLP 6000. A
unique address identifies each pump module. For more information, see “Address
Switch Settings” later in this chapter. See also Chapter 3, "Software
Communication".”
Power requirements are described in Section 2.1, Power and Electrical
Considerations.
Table 2-1
DA-15 Connector Pin Assignments
Pin
Function
Remarks
1
24V DC
2
RS-232 TxD line
Output data
3
RS-232 RxD line
Input data
4
Reserved
5
CAN high signal line
6
CAN low signal line
7
Auxiliary input #1
TTL level
8
Auxiliary input #2
TTL level
9
Ground
Power and logic
10
Ground
Power and logic
11
RS-485 A line
Data +
