AMETEK SLM Series Rev B User Manual

Smart choice for power

Xantrex Technology Inc.
Programmable Products

9250 Brown Deer Road
San Diego, CA 92121
USA

858 450 0085 Phone
858 458 0257 Fax
www.programmablepower.com

SLM-Series AC/DC

Electronic Load

Operating and Programming

Manual

M540072-01 Rev B www.programmablepower.com

About Xantrex

Xantrex Technology Inc. is a world-leading supplier of advanced power electronics and
controls with products from small mobile units to utility-scale systems for wind, solar,
batteries, fuel cells, microturbines, and backup power applications in both grid­connected and stand-alone systems. Xantrex products include inverters, battery
chargers, programmable power supplies, and variable speed drives that convert, supply,
control, clean, and distribute electrical power.

Trademarks

SLM-Series AC/DC Electronic Load is a trademark of Xantrex International. Xantrex is a
registered trademark of Xantrex International.
Other trademarks, registered trademarks, and product names are the property of their
respective owners and are used herein for identification purposes only.

Notice of Copyright

SLM-Series AC/DC Electronic Load

2007 Xantrex International. All rights reserved.

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC.
(“XANTREX”)

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF
ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER
DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR
EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL,
WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY
SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK, AND

(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN
ENGLISH, ALTHOUGH STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE
TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED XANTREX
CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION WHICH IS POSTED
AT WWW.PROGRAMMABLEPOWER.COM.

Operating and Programming Manual © December

Date and Revision

December 2007 Revision B

Part Number

M540072-01

Contact Information

Telephone: [phone] (toll free in North America)
858 450 0085 (direct)
Fax: [phone]
Email: [e-mail]
[e-mail]
Web: www.programmablepower.com

i

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ii

Important Safety Instructions

Before applying power to the system, verify that your product is configured properly for your
particular application.

WARNING

Only

qualified personnel

perform installation and servicing.
Ensure that the AC power line ground is connected properly to the Power Rack input connector or

chassis. Similarly, other power ground lines including those to application and maintenance
equipment

Always ensure that facility AC input power is de-energized prior to connecting or disconnecting
any cable.

In normal operation, the operator does not have access to hazardous voltages within the chassis.
However, depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS
TO HUMAN SAFETY may be normally generated on the output terminals. The customer/user
must ensure that the output power lines are labeled properly as to the safety hazards and that
any inadvertent contact with hazardous voltages is eliminated.

Guard against risks of electrical shock during open cover checks by not touching any portion of
the electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use
safety glasses during open cover checks to avoid personal injury by any sudden component
failure.

must

Hazardous voltages may be present when covers are removed.
Qualified personnel must use extreme caution when servicing this
equipment. Circuit boards, test points, and output voltages also may
be floating above (below) chassis ground.

who deal with attendant hazards in power supplies, are allowed to

be grounded properly for both personnel and equipment safety.

SAFETY SYMBOLS

iii

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iv

Product Family: SLM-Series AC/DC Electronic Load

Warranty Period: One (1) Year

WARRANTY TERMS

Xantrex provides this written warranty covering the Product stated above, and if the
Buyer discovers and notifies Xantrex in writing of any defect in material or workmanship
within the applicable warranty period stated above, then Xantrex may, at its option:
repair or replace the Product; or issue a credit note for the defective Product; or provide
the Buyer with replacement parts for the Product.

The Buyer will, at its expense, return the defective Product or parts thereof to Xantrex in
accordance with the return procedure specified below. Xantrex will, at its expense,
deliver the repaired or replaced Product or parts to the Buyer. Any warranty of Xantrex
will not apply if the Buyer is in default under the Purchase Order Agreement or where
the Product or any part thereof:

• is damaged by misuse, accident, negligence or failure to maintain the same as

specified or required by Xantrex;

• is damaged by modifications, alterations or attachments thereto which are not

authorized by Xantrex;

• is installed or operated contrary to the instructions of Xantrex;

• is opened, modified or disassembled in any way without Xantrex’s consent; or

• is used in combination with items, articles or materials not authorized by Xantrex.

The Buyer may not assert any claim that the Products are not in conformity with any
warranty until the Buyer has made all payments to Xantrex provided for in the Purchase
Order Agreement.

PRODUCT RETURN PROCEDURE

1. Request a Return Material Authorization (RMA) number from the repair facility (must be
done in the country in which it was purchased):

• In the USA, contact the Xantrex Repair Department prior to the return of the

product to Xantrex for repair:
Telephone: [phone], ext. 2295 or ext. 2463 (toll free North America)

858-450-0085, ext. 2295 or ext. 2463 (direct)

• Outside the United States, contact the nearest Authorized Service Center

(ASC). A full listing can be found either through your local distributor or our
website, www.programmablepower.com, by clicking Support and going to the
Service Centers tab.

2. When requesting an RMA, have the following information ready:

• Model number

• Serial number

• Description of the problem

NOTE: Unauthorized returns will not be accepted and will be returned at the
shipper’s expense.

NOTE: A returned product found upon inspection by Xantrex, to be in specification is
subject to an evaluation fee and applicable freight charges.

WA-1

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WA-2

Important Safety Instructions

This manual has been written expressly for the Sorensen brand SLM series of electronic loads,
which have been designed and certified to meet the Low Voltage and Electromagnetic
Compatibility Directive Requirements of the European Community.

Since the goal of the Low Voltage Directive is to ensure the safety of the equipment operator,
universal graphic symbols have been used both on the unit itself and in this manual to warn the
operator of potentially hazardous situations (see Safety Information).

v

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vi

CONTENTS

SECTION 1 FEATURES, FUNCTIONS, AND SPECIFICATIONS ....1-1

1.1 General Description ......................................................................................... 1-1

1.1.1 Power Contours ................................................................................... 1-1

1.1.2 Operating Modes ................................................................................. 1-4

1.2 Features and Functions................................................................................... 1-5

1.3 Accessories ..................................................................................................... 1-5

1.4 Specifications................................................................................................... 1-6

1.5 Regulatory Compliance ................................................................................... 1-6

SECTION 2 INSTALLATION AND MAINTENANCE .......................2-1

2.1 Introduction...................................................................................................... 2-1

2.2 Inspection ........................................................................................................ 2-1

2.2.1 Installation............................................................................................ 2-1

2.2.2 Removal............................................................................................... 2-2

2.2.3 Environmental Requirements .............................................................. 2-2

2.2.4 Service or Repair ................................................................................. 2-2

2.3 Connections..................................................................................................... 2-3

2.3.1 Input Binding Post and Wire Considerations ....................................... 2-3

2.3.2 Voltage Sensing Input (Vsense) BNC Connector. ............................... 2-4

2.3.3 RS-232C and GPIB Connections ........................................................ 2-4

2.4 Maintenance .................................................................................................... 2-4

SECTION 3 OPERATION...............................................................3-1

v

3.1 Front Panel Controls and Indicators ................................................................ 3-1

3.2 Set-up Procedures........................................................................................... 3-5

3.2.1 Pass / Fail Limits, Go/No GO Limits .................................................... 3-5

Contents SLM-Series AC/DC Load

3.2.2 Frequency Setting: ...............................................................................3-6

3.2.3 Current Synchronization.......................................................................3-6

3.2.4 Crest Factor .........................................................................................3-7

3.2.5 Display Setting .....................................................................................3-8

3.3 Normal Operation...........................................................................................3-10

3.3.1 CC Mode: ...........................................................................................3-10

3.3.2 Crest Factor Selection:.......................................................................3-10

3.3.3 CR Mode ............................................................................................3-11

3.4 Initial Settings of SLM-Series AC/DC Electronic Load ...................................3-13

3.4.2 Load current course/fine increase/decrease adjustment key.............3-14

3.5 Protection Features........................................................................................3-15

3.5.1 Over Voltage Protection (OVP) ..........................................................3-15

3.5.2 Over Current Protection (OCP) .........................................................3-15

3.5.3 Over Power Protection (OPP) ............................................................3-15

3.5.4 Over Temperature Protection (OTP)..................................................3-16

SECTION 4 GPIB/RS-232 PROGRAMMING OPERATION ............. 4-1

4.1 Introduction ......................................................................................................4-1

4.2 GPIB Commands .............................................................................................4-1

4.3 RS-232 Interface and Commands....................................................................4-1

4.4 GPIB/RS-232C Command List.........................................................................4-2

4.4.1 Command Syntax Abbreviations..........................................................4-2

4.5 GPIB/RS-232 Command Description...............................................................4-7

4.5.1 Setting Commands...............................................................................4-7

4.5.2 Query Commands ..............................................................................4-20

APPENDIX A GPIB Programming Example...................................... A-1

APPENDIX B RS-232 Programming Example .................................. B-1

APPENDIX C SLM-Series AC/DC

Flow Chart.................................................................. C-1

LIST OF FIGURES

Figure 1-1 SLM-60-20-300 Electronic Load Power Curve ........................................... 1-1

Figure 1-2 SLM-150-8-300 Electronic Load Power Curve ........................................... 1-2

Figure 1-3 SLM-300-4-300 Electronic Load Power Curve ........................................... 1-2

Figure 1-4 SLM-500-1-300 Electronic Load Power Curve ........................................... 1-3

Figure 1-5 Characteristics of CC Mode........................................................................ 1-4

Figure 1-6 Characteristics of CR Mode........................................................................ 1-4

Figure 2-1 Plug-in Installation and Removal ................................................................ 2-2

Load GPIB/RS-232 Operating

vi

SLM-Series AC/DC Load Contents

Figure 2-2 Connection Method for Small Load Current Condition................................2-4

Figure 2-3 Typical Connection for SLM-Series AC/DC Electronic Load.......................2-4

Figure 3-1 Front Panel of SLM-Series AC/DC Electronic Load....................................3-1

Figure 3-2 Front Panel Button Functions for SLM-Series AC/DC Unit .........................3-5

Figure 3-3 Illustration of Sync.......................................................................................3-7

Figure 3-4 SLM-Series AC/DC Electronic Load Module Setup Flow Chart..................3-9

Figure 3-5 SLM-Series AC/DC Electronic Load Operation Flow Char .......................3-12

Figure 4-1 RS-232 Interface Diagram ..........................................................................4-2

Figure 4-2 Protection Status Register ........................................................................4-23

Figure 4-3 Error Status Byte Register ........................................................................4-23

LIST OF TABLES

Table 1-1 SLM-Series AC/DC Specifications ...............................................................1-6

Table 3-1 Built in Crest Factor Settings by Bank andKkey Selection ...........................3-7

Table 3-2 SLM Series AC/DC Module Factory/Reset Settings ..................................3-14

Table 3-3 Range, Resolution, andCoarse/Fine and Increment/Decrement Values....3-15

Table 3-4 SLH AC-series Protection Setting Values ..................................................3-16

Table 4-1 GPIB Command Terminator.........................................................................4-3

Table 4-2 GPIB/RS-232 Setting Command Summary .................................................4-4

Table 4-3 GPIB/RS-232 Preset Query Command Summary with Applicable Module

Types............................................................................................................4-4

Table 4-4 State Command Summary ...........................................................................4-5

Table 4-5 System Commands - All Modules ................................................................4-6

Table 4-6 Measure and Limit Commands ....................................................................4-6

Table 4-7 Global Commands........................................................................................4-6

Table 4-8 Waveform Information ................................................................................4-14

vii

Contents SLM-Series AC/DC Load

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viii

V

FEATURES, FUNCTIONS,

AND SPECIFICATIONS

1.1 GENERAL DESCRIPTION

SLM-Series, AC/DC Electronic Load is used to test the specification characteristics of
AC/DC high power suppliers and the service life characteristics of batteries.
The load works with GPIB interface and front panel manual operation.

SECTION 1

1.1.1 Power Contours

The power contours of the SLM-Series AC/DC Electronic Loads are shown in the
following figures.

V

6

0

50V

40V

30V

15V

10V

5

0

Figure 1-1 SLM-60-20-300 Electronic Load Power Curve

A

300W CONTOU

R

I

7.5

10A

A

15A

6

A

20A

M540072-01 Rev B 1-1

Features, Functions, Specifications SLM-Series AC/DC Load

V

150

V

125V

100V

75V

37.5V
15V

50V

300W CONTOU

3

A

4

A

6

2.4

A

2

0

A

A

8

R

I

A

Figure 1-2 SLM-150-8-300 Electronic Load Power Curve

V

300

V

300W CONTOU

R

250V

200V

150

V

100

V

75V
30V

I

3

2

1

A

1.2

A

1.5

0

A

A

Figure 1-3 SLM-300-4-300 Electronic Load Power Curve

A

4

A

1-2 M540072-01 Rev B

SLM-Series AC/DC Load Features, Functions, and Specifications

400

500

350
300

10V

V

V

V

V

V

5

V

0.8

0.4

0.6

A

0.2

0

A

A

A

I

1

A

300W CONTOU

R

Figure 1-4 SLM-500-1-300 Electronic Load Power Curve

M540072-01 Rev B 1-3

Features, Functions, Specifications SLM-Series AC/DC Load

1.1.2 Operating Modes

The work mode of SLM-Series AC/DC Electronic Load includes Constant Current (CC)
and Constant Resistance (CR).

CC Mode

During CC mode, the load current input into SLM-Series, AC Electronic Load
depends on the current setting regardless of the input voltage, i.e., the current
setting remains unchanged.

I

CC

CURRENT SETTING

LOAD

CURRENT

V

INPUT VOLTAGE

Figure 1-5 Characteristics of CC Mode

CR Mode

During C.R. mode, the load current input into SLM-Series AC/DC Electronic Load
depends on the resistance setting. At this time, the load current is in direct
proportion to input voltage, e.g. the resistance setting remains unchanged. Please
refer to Figure 1-6 below.

I

LOAD

CURRENT

RESISTANCE

SETTING

V

INPUT VOLTAGE

Figure 1-6 Characteristics of CR Mode

The load setting of SLM-Series AC/DC Electronic Load and the load condition setting of the
front panel can be made through front panel manual operation or through GPIB commands.
The load voltage and current can be transmitted to the computer through GPIB bus. For
operation of GPIB, please refer to Section 4.

1-4 M540072-01 Rev B

SLM-Series AC/DC Load Features, Functions, and Specifications

1.2 FEATURES AND FUNCTIONS

• Modular design facilitates fast and flexible install/uninstall procedures

• Interface function of full GPIB control, including setting of load condition and read-

back of Vmeter and Ameter

• Software calibration ability

• Dual High Accuracy/High Resolution 4 ½ -digit Vmeter and Ameter

• In CC mode, frequency width can reach to 70Hz with the set table range of 1KHz

• In CC mode, the settable Crest Factor can be set to Maximum 3.5

• Isolated Current Monitor BNC output with full scale of 10V

• Automatic judging ability for GO/NG

• Switchable automatic voltage sensing ability.

• Protection functions include Over-Voltage, Over-Current, Over-Power and Over-

Temperature

• Cooling fan control device with revolution change function

1.3 ACCESSORIES

• Vsense Input BNC Connector 1 EA

• Banana Terminal (Black) 1 EA

• Banana Terminal (Red) 1 EA

• Hook-Type Terminal 2 EA

• SLM-Series AC/DC Electronic Load Operation and Programming

Manual (this manual) 1 EA

M540072-01 Rev B 1-5

Features, Functions, Specifications SLM-Series AC/DC Load

(VA)

(Amp

)

ge(

)

g

y

g

K

y

g

y

g

y

g

y

1.4 SPECIFICATIONS

NOTE: The following specifications apply 25°±5°:

MODEL
INPUT RATINGS

Power

Current

Volta

CC MODE

CR MODE

4 1/2 DVM

4 1/2 DAM

4 1/2 WATT METER

VA METER
Imonitor
PROTECTION

Volt

Frequency

Ran

Resolution 2.5 / 5 mA 1 / 2 mA 0.5 / 1 mA 0.125 / 0.25 mA

Accurac

Low current 0 - 1 A 0 - 0.4 A 0 - 0.2 A 0 - 0.05 A

Accuracy ± 2% of (setting + range)

e II/I 0.3-1.2 / 1.2-4.8K 1.875-7.5 / 7.5-30K 7.5-30 / 30-120K50-200 / 200-800

Ran

Resolution 0.83 / 0.2083 mS 0.13 / 0.033 mS 0.033 /0.0083 mS 0.005 / 0.00125 mS

Accurac

Ran

Resolution 0.01 V 0.01 V 0.1 V 0.1 V

Accurac

Ran

Resolution 0.01 A 0.001 A 0.001 A 0.001 A

Accurac

Ran

Resolution

Accurac

OCP ~21 A ~8.4 A ~4.2 A ~1.05 A
OVP ~63 V ~175.5 V ~315 V ~525 V

SLM-60-20-300 SLM-150-8-300 SLM-300-4-300 SLM-500-1-300

300 VA 300 VA 300 VA 300 VA

ere

OPP ~315 VA ~315 VA ~315 VA ~3 15 VA

OTP 85

20 Arms 8 Arms 4 Arms 1 Arms
60 Vrms 150 Vrms 300 Vrms 500Vdc/300 Vrms

DC, 40 - 70Hz (CC Mode) ; DC - 70Hz (CR Mode)

e 0-10 / 10-20 A 0-4 / 4-8 A 0-2 / 2-4 A 0-0.5 / 0.5-1 A

±0.5% of (setting + range)

±0.5% of (setting + range)

e 60 V 150 V 300 V 500 V

±(0.5% of reading + 0.2% of range)

e20 A8 A4 A1 A

±(0.5% of reading + 2% of range) ; ±0.5% of (reading + range) @ 50/60Hz

Vrms×Arms

℃

300 W

0.1 W

85

℃

e

± (0.5% of reading)± 3W

5 A/V 2 A/V 1 A/V 0.2 A/V

℃

85

85

℃

Table 1-1 SLM-Series AC/DCSpecifications

1.5 REGULATORY COMPLIANCE

• Certified to UL 61010-1, CSA C22.2 No. 61010.1 and IEC/EN 61010-1

• CE Compliant:

o Low Voltage Directive (73/23/EEC) using EN 61010-1

o EMC Directive (89/336/EEC) using EN 61326

• FCC Compliant to 21 CFR, Subpart J

1-6 M540072-01 Rev B

INSTALLATION AND MAINTENANCE

2.1 INTRODUCTION

This section discusses the installation and removal procedures for the SLM-Series
AC/DC load module and the SLM four-module mainframe. The SLM-Series AC/DC
load module does not need any adjustment after plugging into the SLM mainframe.

SECTION 2

Warning:
Only qualified personnel should do installation and removal.

2.2 INSPECTION

The SLM-Series AC/DC Electronic Load was carefully inspected before shipment. If
instrument damage has occurred during transport, please inform Xantrex sales and
service office or representative.

Unless the SLM mainframe and the SLM-Series AC/DC electronic load module were
purchased separately, the load module should be installed in the mainframe before
shipment from Xantrex. The SLM-Series AC/DC electronic load module operates in
the SLM mainframe for front panel, mainframe's 150 sets store/recall and remote
control feature.

2.2.1 Installation

1 Turn the SLM mainframe power OFF before inserting any load module, or

damage may occur to the plug-in module circuitry.

2. Align the upper and lower grooves of the mainframe with the upper and lower
guides of the selected compartment (Figure 2-1).

3. Push the module in and press firmly on the binding posts of the front panel to
seat the circuit board into the interconnecting jack.

4. Using a screwdriver, tighten the screw on the lower right corner of the SLM­Series load module front panel.

5. DO NOT turn the mainframe power ON until after all of the electronic modules
are completely installed.

M540072-01 Rev B 2-1

Installation SLM-Series AC/DC Load

Figure 2-1 Plug-in Installation and Removal

2.2.2 Removal

1. Turn the SLM mainframe power OFF. Damage may occur to the plug-in
module circuitry if removed under power.

2. Using a screwdriver, loosen the screw on the lower right corner of the front panel.

3. Turn the adjustment knob of the black binding post counter-clockwise until it is
fully loosened.

4. Pull on the black adjustment knob of binding post until the interconnecting jack at
the rear of the load module disengages.

5. Finish pulling the SLM-Series load module out from the mainframe.

2.2.3 Environmental Requirements

• For indoor use only

• Installation Category II (over voltage)

• Pollution Degree 2

• Altitude up to 2000 meters (with power derating)

• Relative Humidity 80% RH Max

Ambient Operating Temperature 0-40°C, with ideal being 25°C ± 5°C

2.2.4 Service or Repair

If the instrument is damaged, please attach a tag to the instrument, identifying the
owner and indicating the required service. Follow the procedures detailed on Page iii
of this manual.

2-2 M540072-01 Rev B

SLM-Series AC/DC Load Installation

2.3 CONNECTIONS

CAUTION: PREVENT DAMAGE TO THE LOAD. Do NOT apply voltage or current
with power switched OFF. Turn ON the power switch to the load PRIOR to applying
voltage or current to the input terminals (i.e., before turning on the power supply
under test).

2.3.1 Input Binding Post and Wire Considerations

The output of the device under test (DUT) can be connected to the load by one of
five methods, each described in the following subsections. Connect he positive (+)
and negative (-) binding posts to the wires/cables according to the following
guidelines. A major consideration in making input connection is the wire size. The
minimum wire size is required to prevent overheating and to maintain good
regulation. It is recommended that the wires be large enough to limit the voltage
drop to less than 0.5V per lead.

Note: When using Constant Resistance mode, Vsense inputs should be used to

avoid cable resistance from affecting measurements and regulation.

Plug Connectors

This is the most common way to connect the input of electronic load to the device
under test. It is recommended the load current be less than 20A in this
connection since the current rating of the plug is rated to 20A. The maximum wire
gauge should be limited to AWG14.

Hook Terminals

The SLM-Series AC/DC Electronic Load attachments include two (2) hook-type
terminals for connecting the equipment to be measured with the wire of the AC
electronic input connector. The hook terminal provides a good contact to the
binding post and can be used anytime. The maximum wire gauge should be
limited to AWG10.

Direct Insertion into Binding Posts

This is the simplest way to connect the load input to the DUT. The maximum wire
gauge AWG14 can be used in this application.

Plug Connectors and Hook Terminals

This method is recommended when input current is greater than 20A, because it
provides higher current rating and lower impedance of the connecting wire.

Plug Connectors and Direct Insertion

This method is also recommended when input current is greater than 20A or
when the connecting lead wire is longer.

M540072-01 Rev B 2-3

Installation SLM-Series AC/DC Load

2.3.2 Voltage Sensing Input (Vsense) BNC Connector.

To solve the conductor voltage drop under a big load current, Vsense-CLIP cable
can be used to connect with the specific point to be measured thus obtaining the
specific voltage value. See Figure 2-2 and Figure 2-3.

Figure 2-2 Connection Method for Small Load Current Condition

Figure 2-3 Typical Connection for SLM-Series AC/DC Electronic Load

2.3.3 RS-232C and GPIB Connections

For these connections, refer to the SL-series mainframe operation manual(s).
RS-232 and GPIB programming operation are addressed in Section 4 of this manual.

2.4 MAINTENANCE

WARNING: Avoid electrical shock or damage to the meter.
To avoid electrical shock or damage to the meter, do not get water inside

the case.
Periodically wipe the case with a damp cloth and detergent; do not use abrasives or
solvents.

2-4 M540072-01 Rev B

SECTION 3

OPERATION

3.1 FRONT PANEL CONTROLS AND INDICATORS

This section describes the front panel and its manual operation of the SLM-Series
AC/DC Electronic Load. For calibration procedures, please refer to the SLM-Series
Load Calibration Manual. For GPIB control, please refer to Section 4, GPIB Remote
Operation, of this manual.

Figure 3-1 Front Panel of SLM-Series AC/DC Electronic Load

M540072-01 Rev B 3-1