tecan cavro xlp 6000 User manual

Copyright by Tecan Systems
Operating Manual
Cavro®XLP 6000 Modular Syringe
Pump
October 2005
734237-C

Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en

Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
Operating Manual
Cavro®XLP 6000 Modular Syringe Pump
Tecan Systems, Inc.
2450 Zanker Road
San Jose, CA 95131 USA
T 1 408 953 3100, Toll Free 1 800 231 0711
F 1 408 953 3101
E-mail: [email protected]
Web Site: www.tecansystems.com
October 2005
734237-C

Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
Copyright © 2005 Tecan Systems, Inc.
Part Number 734237-C
Copyright and Trademark Information
Teflon®is a registered trademark of E.I. DuPont de Nemours & Co., Inc.
Kel-F®is a registered trademark of the 3M Company
CONTRAD®is a registered trademark of Decon Laboratories, Inc.
Microsoft Windows®, Windows 3.1®, Windows 95®, Windows NT®, and Windows
2000®are registered trademarks of Microsoft Corporation.
Cavro®is a registered trademark of Tecan Systems, Inc.
Product Warranty Information
Tecan Systems warrants that instruments manufactured and sold by Tecan
Systems will be free from defects in materials and workmanship for a period of
twelve (12) months from the date of shipment to customer. Tecan Systems’
liability for the breach of the foregoing warranty is limited to the repair or
replacement of the products found to be other than warranted. Such products will
be accepted for return only if the customer returns them to Tecan Systems’
factory or repair depot within thirty (30) days from the time of discovery of the
alleged defect, and prior to return, fills out a Certificate of Decontamination
(document P/N 730171), obtains a return authorization number from Tecan
Systems, provides Tecan Systems with the serial number of each instrument to
be returned, and prepays freight charges to the factory or a designated Tecan
Systems repair depot. No warranty is expressed or implied for:
The foregoing warranties and limitations are customer’s exclusive remedies and
are in lieu of all other warranties, express or implied, including without limitation
any warranty of merchantability or fitness for a particular purpose.
Product Documentation Warranty Information
The information contained in this document is subject to change without notice.
Tecan Systems makes no warranty of any kind with regard to this material,
including, but not limited to, the implied warranties of merchantability and fitness
for a particular purpose.
Tecan Systems shall not be liable for errors contained in this document or for
incidental or consequential damages in connection with the furnishing,
performance, or use of this material.
Breakage Syringes
Maltreatment Syringe seals
Unauthorized service Tubing and tubing
connections
Units not returned in original or
adequate packaging Cavro valves
Units which are “life-cycled” Cavro probes

Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
Document Status Sheet
Title: Cavro® XLP 6000 Modular Syringe Pump Operating Manual
ID: 734237-C, en
Version Revision Issue Major changes
1 C New edition

Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
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Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
Table of Contents
1 Getting Started
1.1 Regulatory Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 XLP 6000 Features at-a-Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.3 Unpacking the XLP 6000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.1 XLP 6000 Features at-a-Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2 Unpacking the XLP 6000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.4 Functional Description of the XLP 6000. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.5 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1.6 Tips for Setting Up the XLP 6000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
2 Hardware Setup
2.1 Power and Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.3 Communication Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.4 Settings and Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.5 Installing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.6 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
3 Software Communication
3.1 XLP 6000 Addressing Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Communication Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.3 Using the XLP 6000 Command Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.4 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
3.5 Operating Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
3.6 Error Codes and Pump Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47
4 Setting Up the XLP 6000 for Your Application
4.1 Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Optimizing XLP 6000 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.3 Helpful Hints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
5 Maintenance
5.1 Daily Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.2 Weekly Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.3 Periodic Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.4 On-Site Replacements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
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6 Technical Service
A Ordering Information
A.1 Available Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A.2 XLP 6000 Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A.3 Other Tecan Systems Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
A.4 Mating Connector Suppliers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
B Plunger Information
B.1 Typical Plunger Force . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
B.2 Plunger Time Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
C ASCII Chart of Codes for U.S. Characters
D Chemical Resistance Chart
E XLP 6000 Physical Specifications
F CAN Communication Commands
G Command Quick Reference
G.1 Pump Configuration Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-1
G.2 Initialization Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-2
G.3 Valve Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-4
G.4 Plunger Movement Commands/Status Bit Reports . . . . . . . . . . . . . . . . . . . G-4
G.5 Set Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-5
G.6 Control Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-5
G.7 Non-Volatile Memory (EEPROM) Commands . . . . . . . . . . . . . . . . . . . . . . . G-6
G.8 Report Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-6
G.9 Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-7
G.10 Error Codes and Status Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-8
G.11 DA-15 Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-8

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Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
List of Figures
Figure 1-1 XLP 6000 Modular Syringe Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Figure 1-2 Syringe Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Figure 1-3 3-Port Valve Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Figure 1-4 XLP 6000 Printed Circuit Assembly External Connectors . . . . . . . . . . 1-6
Figure 2-1 DA-15 Connector Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Figure 2-2 RS-232 Multi-Pump Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Figure 2-3 RS-485 Multi-Pump Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Figure 2-4 CAN Multi-Pump Cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Figure 2-5 Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Figure 2-6 XLP 6000 Valve Installation (3-Port Valve Shown) . . . . . . . . . . . . . . . 2-12
Figure 2-7 Syringe Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Figure 2-8 XLP 6000 Outline Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Figure 3-1 CAN Message Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Figure 3-2 Valve Position Examples for 3-Port Non-Distribution Valves . . . . . . . 3-28
Figure 3-3 Valve Position Examples for 3-Port Distribution Valves. . . . . . . . . . . . 3-29
Figure 3-4 Valve Position Examples for 4-Port Non-Distribution Valves. . . . . . . . 3-30
Figure 3-5 Valve Position Examples for T Valves (Non-Distribution) . . . . . . . . . . 3-31
Figure 3-6 Valve Position Examples for 6-Port Distribution Valves. . . . . . . . . . . . 3-31
Figure 3-7 Valve Position Examples for 9-Port Distribution Valves. . . . . . . . . . . . 3-32
Figure 4-1 Syringe Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Figure 5-1 Syringe Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Figure 5-2 Syringe Seal Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Figure 5-3 XLP 6000 Valve Replacement (3-Port Valve Shown) . . . . . . . . . . . . . 5-7
Figure 6-1 XLP 6000 Label Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

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1 - Getting Started
Regulatory Considerations
Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en 1 - 1
1 Getting Started
Congratulations on your purchase of the Cavro® XLP 6000 Modular Syringe
Pump from Tecan Systems.
The XLP 6000 is a fully programmable, open frame, precision liquid handling
pump module, designed for applications in the 5 µL to 25 mL range. It is controlled
by an external computer or microprocessor and automates pipetting, diluting, and
dispensing functions.
This chapter includes these topics:
Regulatory Considerations
XLP 6000 Features at-a-Glance
Unpacking the XLP 6000
Functional Description of the XLP 6000
Safety
Tips for Setting Up the XLP 6000
1.1 Regulatory Considerations
The XLP 6000 is a general laboratory module. Since it not a medical device, it is
not subject to FDA regulatory approval. The XLP 6000 uses only recognized
components and bears the UL Recognized Component Mark:
The use of UL Recognized components in a product or system allows UL to focus
the evaluation of the complete system on its intended end-use, and thus speeds
up the evaluation of that product or system. For more information regarding UL
certification of Tecan Systems’ syringe pumps, please visit the Underwriters
Laboratories Inc. website at http://www.ul.com/info/standard.htm. Tecan Systems’
customer file number for the recognized component is E164638.
1.1.1 CE
As a module designed for incorporation into larger systems that require
independent testing and certification, the XLP 6000 does not carry its own CE
mark.

1 - 2 Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
1 - Getting Started
XLP 6000 Features at-a-Glance
1.1.2 Radio Interference
The XLP 6000 can radiate radio frequency energy, which may cause interference
to radio and television communications. Follow standard good engineering
practices relating to radio frequency interference when integrating the XLP 6000
into electronic laboratory systems.
1.2 XLP 6000 Features at-a-Glance
The XLP 6000 is a syringe pump that is designed for OEM precision liquid
handling applications. It has the following standard features and functions:
Syringe sizes ranging from 50 L to 25 mL
Accuracy 1.0% at full stroke
Precision 0.05% at full stroke
Standard dispense/aspirate resolution of 6,000 increments
Microstep dispense/aspirate resolution of 48,000 increments
3-Port, 4-Port, Y-Block, T-Valve, 3-Port Distribution, 6-Port Distribution, and 9-
Port Distribution valves
Borosilicate glass, Kel-Fand Teflonfluid contact
RS-232, RS-485 and CAN interface
Programmable plunger speeds from 1.2 sec/stroke to 160 min/stroke, with
ramps and on-the-fly speed changes
Teflon coated lead screw drive with a quadrature encoder for lost-step
detection
Pump diagnostics, self-test, and error reporting
Auxiliary inputs and outputs
Operates using a single 24V DC power supply
1.3 Unpacking the XLP 6000
To unpack the module, follow these steps:
1Remove the pump module(s) and accessories from the shipping cartons.
2Check the contents against the packing slip to make sure that all the
components are present.
1.3.1 ESD Considerations
The XLP 6000 is an electronic device that is sensitive to electrostatic discharge
(ESD). Static discharge from clothing or other fixtures can damage these
1.0.1 Radio Interference
The XLP 6000 can radiate radio frequency energy, which may cause interference
to radio and television communications. Follow standard good engineering
practices relating to radio frequency interference when integrating the XLP 6000
into electronic laboratory systems.
1.1 XLP 6000 Features at-a-Glance
The XLP 6000 is a syringe pump that is designed for OEM precision liquid
handling applications. It has the following standard features and functions:
Syringe sizes ranging from 50 L to 25 mL
Accuracy 1.0% at full stroke
Precision 0.05% at full stroke
Standard dispense/aspirate resolution of 6,000 increments
Microstep dispense/aspirate resolution of 48,000 increments
3-Port, 4-Port, Y-Block, T-Valve, 3-Port Distribution, 6-Port Distribution, and 9-
Port Distribution valves
Borosilicate glass, Kel-Fand Teflonfluid contact
RS-232, RS-485 and CAN interface
Programmable plunger speeds from 1.2 sec/stroke to 160 min/stroke, with
ramps and on-the-fly speed changes
Teflon coated lead screw drive with a quadrature encoder for lost-step
detection
Pump diagnostics, self-test, and error reporting
Auxiliary inputs and outputs
Operates using a single 24V DC power supply
1.2 Unpacking the XLP 6000
To unpack the module, follow these steps:
1Remove the pump module(s) and accessories from the shipping cartons.
2Check the contents against the packing slip to make sure that all the
components are present.
1.2.1 ESD Considerations
The XLP 6000 is an electronic device that is sensitive to electrostatic discharge
(ESD). Static discharge from clothing or other fixtures can damage these

1 - Getting Started
Functional Description of the XLP 6000
Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en 1 - 3
components. To prevent premature failure of pump components, use good ESD
practices when handling the XLP 6000. These include, but are not limited to:
Using wrist or ankle straps
ESD mats or worktables
ESD wax on the floor
Prepare an ESD-free work area before the chassis is grounded.
1.4 Functional Description of the XLP 6000
The XLP 6000 uses a stepper-motor driven syringe and valve design to aspirate
and dispense measured quantities of liquid. Both the syringe and the valve are
replaceable. Functional descriptions and illustrations of each major XLP 6000
component are provided in the following sections.
Figure 1-1 XLP 6000 Modular Syringe Pump

1 - 4 Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
1 - Getting Started
Functional Description of the XLP 6000
1.4.1 Syringe and Syringe Drive
The syringe plunger is moved within the syringe barrel by a lead screw drive that
incorporates a 1.8stepper motor and quadrature encoder to detect lost steps.
The syringe drive has a 60 mm travel length and resolution of 6,000 increments
(48,000 increments in fine-positioning and microstep mode). When power is not
applied to the pump, the syringe drive can be removed by releasing the pin
assembly.
The base of the syringe plunger is held to the drive by a knurled screw. The top of
the syringe barrel attaches to the pump valve by a 1/4-28" fitting.
Figure 1-2, ’Syringe Components” shows the components of a typical syringe.
Figure 1-2 Syringe Components
Syringes are available in these sizes: 50 L, 100 L, 250 L, 500 L, 1.0 mL,
2.5 mL, 5.0 mL, 10 mL, and 25 mL.. For ordering information, see Appendix A,
"Ordering Information".
Note: To obtain optimal performance and maximum life from any syringe, please
follow the syringe cleaning and maintenance procedure included with each Cavro
Syringe. Technical Note #1 (PN 730317) contains practical tips for the use and
maintenance of Cavro Syringes.
1.4.2 Valve and Valve Drive
The valve is made of a Kel-F body and Teflon plug. The plug rotates inside the
valve body to connect the syringe port to the various input and output ports. In
addition to input and output ports, non-distribution valves also have a bypass
position. This position “bypasses” the syringe and connects the input and output
ports. The bypass position is often used for flushing fluid lines. The valve is turned
by a 1.8stepper motor that has an encoder coupled to it for positioning feedback.

1 - Getting Started
Functional Description of the XLP 6000
Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en 1 - 5
Figure 1-3 shows the components of a 3-port valve.
Figure 1-3 3-Port Valve Components
1.4.3 Printed Circuit Assembly
The printed circuit assembly (PCA) holds the microprocessor and circuitry to
control the syringe and valve drive. The PCA provides connectors for electrical
inputs and outputs as well as a communication address switch. For information on
modes of operation, see Chapter 3, "Software Communication".
Figure 1-4 shows the accessible components on the printed circuit board
assembly.

1 - 6 Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
1 - Getting Started
Functional Description of the XLP 6000
Figure 1-4 XLP 6000 Printed Circuit Assembly External Connectors
The XLP 6000 PCA has a DA-15 connector to handle power and communications.
For more information on the printed circuit assembly inputs/outputs and the
address switch, see Chapter 2, "Hardware Setup".
1.4.4 Communication Interfaces
Depending on the pump configuration, the XLP 6000 can communicate singly or
in a multi-pump configuration through an RS-232, RS-485, or CAN (Controller
Area Network) interface. For RS-232 and RS-485, baud rates of 9600 and 38400
are supported. For CAN, baud rates of 100K,125K, 250K, 500K, and 1M are
supported.
For details on the communications interfaces, see Chapter 2, "Hardware Setup".

1 - Getting Started
Safety
Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en 1 - 7
1.4.5 Multi-Pump Configurations
Up to fifteen (15) XLP 6000 pumps can be connected together in a multi-pump
configuration (also called “daisy-chaining”). In this configuration each pump is
addressed separately from a single terminal via its unique address, which is set
using the address switch on the back panel of the pump.
Within a multi-pump configuration, the RS-485 communications bus is required,
although the first pump in the chain may receive either RS-232 or RS-485
communications. For CAN communications, neither RS-232 nor RS-485 is
required. For more information on setting addresses, see Chapter 2.
1.5 Safety
The Cavro® XLP 6000 Modular Syringe Pump is designed for pipetting and
dispensing operations in the 5 µL to 25 mL range. Any other use is considered
improper and may result in damage to the pump and/or unreliable test results.
The XLP 6000 is designed to meet recognized technical regulations and is built
with state-of-the-art components. Nevertheless, risks to users, property and the
environment can arise when the module is used carelessly or improperly.
Appropriate warnings in this Operating Manual serve to make the user aware of
possible hazards.
1.5.1 Notices and Symbols
Warning Notices Used in this Manual
The triangle warning symbol indicates the possibility of personal injury if the
instructions are not followed.
Specific symbols indicate the hazard to which a user is exposed. A few examples
follow.
Toxic Substance
Chemical or biological hazards can be associated with the substances used or the
samples processed with the XLP 6000. Always be aware of possible hazards
associated with these substances.
Explosion and Fire Hazard
Never process explosive or highly flammable liquids with the XLP 6000.

1 - 8 Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
1 - Getting Started
Tips for Setting Up the XLP 6000
Pinch Point, Mechanical Hazards
Automatically moving parts may cause injuries (crushing, piercing)
Attention
The general “Read This” symbol indicates the possibility of equipment damage,
malfunction or incorrect process results, if instructions are not followed.
1.6 Tips for Setting Up the XLP 6000
For complete information on setting up the XLP 6000, see Chapter 2, "Hardware
Setup" and “Chapter 3, "Software Communication".
Note: Before performing any work with the XLP 6000, first read this Operating
Manual carefully.
To ensure proper operation, follow these tips:
Always set up and mount the pump in an upright position. Failure to do so can
cause problems priming the system.
Always run liquid through the syringe and valve when they are moving. Failure
to do so can damage the sealing surfaces.
Before running any organic solvents through the pump, see Appendix D,
"Chemical Resistance Chart" for more information on chemical compatibility.
Always power down the instrument when connecting or disconnecting pumps.
Caution! Keep fingers out of the syringe slot while the pump is running. Failure to
do so can cause injury.

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
Cabling
Communication Interfaces
Settings and Options
Installing Components
Mounting
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
F per amp of output current
–850mA for power supplies with external capacitance of at least 1000 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.

2 - 2 Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
2 - Hardware Setup
Power and Electrical Considerations
A current-limiting power supply is recommended. Current limiting above 1.0A is
acceptable, assuming that no additional equipment is operated from the supply.
If the power supply uses current feedback, the time-current foldback point must be
sufficient to allow charging of a 470 F capacitor without folding back. If an
external capacitor is used, exercise care to ensure that the supply always starts
after foldback, particularly at low AC line voltage.
2.1.2 Integrating a Power Supply
When a power supply is used to operate more than one XLP 6000 or other device,
it must provide the total average current for all devices. The power supply and
filter capacitance together must satisfy the total peak input current for all devices.
For example, if a system incorporates six XLP 6000 pumps with other equipment
that together require 4 amps, a 10A power supply is satisfactory, provided the
output filter capacitance in the supply is at least 10,000 F:
6 x 0.85 = 5.1A; +4A = 9.1A (choose a 10A power supply)
If the power supply filter capacitance is less than 10,000 F, use either additional
external capacitance or a 15A power supply:
6 x 1.5 = 9.0A; +4A = 13A (choose a 15A power supply)
In this example, it is assumed that all the pumps and other equipment will
sometimes operate simultaneously.
External equipment with inadequate bypass capacitance or that is inadequately
sourced for current can cause overvoltage transients and sags, and can create
unnecessary ripple current in the XLP 6000. This can result in decreased
component life. Additionally, it is possible for a regulated power supply to become
unstable with certain loads and oscillate if adequate filter capacitance is not
present. Some forms of oscillation can cause failures in the XLP 6000. These
issues can be avoided by using a properly designed commercial power supply.
Consideration should also be given to the wiring of the XLP 6000 and any
additional devices. Wiring should be of sufficient gauge for the current, and as
short as possible. Unless otherwise required by safety requirements, the power
supply lines to the XLP 6000 should be 20AWG or heavier. Multiple XLP 6000s
can be daisy-chained, provided that the wire size and the power supply are
adequate for the total current. In the example of the six XLP 6000 pumps above,
use 18AWG wire if the units are daisy-chained. It is best if each pair is twisted or
dressed together from the device to the supply. For more information on multi-
pump cabling, see Section 2.2, Cabling.
To control power to the XLP 6000, switch power to the power supply. Do not use a
relay or switch contacts between the 24V supply and the XLP 6000 (i.e., do not
switch DC input to the pump).