Argus RSM 48/10 User manual

RSM 48/10
Top Input/Output
19" Shelf for 30A System
030-692-B2

Argus Technologies Ltd. Visit www.argus.ca
Burnaby, British Columbia. Telephone: [phone] Fax: [phone]
Argus Technologies reserves the right to make changes to the products and information contained in this document without notice.
Copyright 2008 Argus Technologies Ltd. Argus®is a registered trademark of Argus Technologies Ltd. All Rights Reserved.
Printed in Canada.
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Argus Technologies Ltd. 030-692-B2 Rev A WC
Printed in Canada. © 2006 Argus Technologies Ltd. ARGUS is a registered trademark of Argus Technologies Ltd. All Rights Reserved.
RSM 48/10
Top Input/Output
19” Shelf for 30A System
030-692-B2
The following documents and drawings are included in this manual to provide the necessary information required for
installation, operation and fault diagnosis of the unit:
• Specifications: 030-692-B1 Rev A
• Warranty Policy: 048-507-10
• CSA/NRTL Equivalence: 048-554-10
• Installation and Operation Instructions: 030-692-C0 Rev A
• Outline Drawing, 19” Shelf: 030-692-06
• Outline Drawing, Power Module: 010-532-06
• Outline Drawing, Analog Supervisory: 018-550-06
• Customer Connections, 19” Shelf: 030-692-08
• Customer Connections, Analog Supervisory: 018-550-08
• Factory Service Information: 048-527-10

Specifications for Argus’ RSM 48/10 Top Input/Output 19" Shelf for 30A System
Argus Technologies Ltd. 030-692-B1 Rev A WC
Printed in Canada. © 2006 Argus Technologies Ltd. ARGUS is a registered trademark of Argus Technologies Ltd. All Rights Reserved. Page 1 of 2
System Output (Three Power Modules)
Voltage: 42 to 58Vdc
Current: 30A nominal
Power: 1650W continuous
Heat Dissipation (240Vac): 696 BTU
Power Module Output
Current: 10A nominal/module (13A maximum)
Static Regulation: -1% load (with slope) ±0.1%
<0.04% line
Dynamic Regulation: <1% deviation for 50 to 100% load step
Response Time: <2ms to 0.1% of output for 50 to 100% load step
Time Stability: 0.1% per year
Temperature Stability: <100ppm per degree C (0.01%) over the operating range
Noise: <26dBrnC (<22dBrnC with battery)(voice band)
<10mVrms, 10kHz to 10MHz (wideband)
<150mVp-p, 10kHz to 100MHz
EMI: The unit meets the requirements of:
ICES-003 Class B
FCC Part 15, Class B
EN 55022 Class B (240)
EN 61000-4-2 (240)
EN 61000-4-3 (240)
EN 61000-4-4 (240)
EN 61000-4-5 Class 4 (240)
Fuse Type/Rating: Fast acting, 1/4 x 1-1/4”
15A, 60Vdc
Isolation Resistance: 10 mega ohms
In accordance with FCC requirements, we provide the following statement as specified in the FCC guidelines for
conformance to Part 15, Class B:
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Any changes or modifications to this equipment not expressly described in this manual could void the FCC
compliance.

Specifications for Argus’ RSM 48/10 Top Input/Output 19" Shelf for 30A System Continued
Argus Technologies Ltd. 030-692-B1 Rev A WC
Printed in Canada. © 2006 Argus Technologies Ltd. ARGUS is a registered trademark of Argus Technologies Ltd. All Rights Reserved. Page 2 of 2
System Input
Recommended Feeder Breaker:15A per feed
Power Module Input
Voltage: 187 to 264Vac (45 to 70Hz) (240V nominal)
Current: 3.0A (208V nominal) @ 550 Watts/module
Power Factor: >0.99 true (100% load)
>0.98 true (50% load)
T.I.F. (Current): <100 @ 100% load
Efficiency: 89% @ 100% load (240Vac)
Source Impedance: <25% inductive
<5% resistive
Fuse Type/Rating: Fast acting, 5 x 20mm
4.0A, 1500A interrupting capacity @ 250Vac
Input Transient Suppression: Meets ANSI/IEEE C62.41 Category B3
Output Voltage Display
Liquid Crystal Display (LCD): 3-digit, +18.0 to 90.0V
Output Fuse
Fuse: 50A TPS
Fuse Block Rating: 1 to 125A
LVD (Option)
LVD Current Capability: 70A @ 48Vdc
Disconnect Voltage: 42 to 48Vdc
Miscellaneous
Dimensions: 133mm H x 431mm W x 282mm D
(excluding mounting brackets) [5.24" H x 17" W x 11.1" D]
Mounting: Custom mount (see manual drawings)
Acoustic Noise: 45dBa @ 1m (3 ft)
Weight: 16.8 kg (37 lb.)[e/w 3 power modules, supervisory]
Alarm Connection Ratings: 60Vdc, 0.5A maximum
Environmental
Temperature: 0 to 50°C (32 to 122°F) [standard]
-40 to 50°C (-40 to 122°F) [extended]
-40 to 70°C (-40 to 158°F) [storage]
Humidity: 0 to 95% non-condensing
Elevation: -500 to 2800m (-1640 to 9186 ft)
Recommended Connection Wire Sizes (as per UL/CSA)
Refer to the Installation section under wiring and connections.
The above information is valid at the time of publication. Consult factory for up-to-date ordering information.
Specifications are subject to change without notice.

Warranty Policy
Argus Technologies Ltd. warrants all equipment manufactured by it to be free from defects in parts
and labor, excluding third party OEM materials (example: air conditioners, batteries), for a period of
two years from the date of shipment from the factory. For third party products the OEM’s warranty
shall apply. The liability of Argus applies solely to repairing, replacing or issuing credit (at Argus’ sole
discretion) for any equipment manufactured by it and returned by the customer during the warranty
period. The terms of the warranty are Ex Works (EXW) from Argus’ factory service location.
Argus reserves the right to void the warranty if:
(1) identification marks or serial numbers are removed or altered in any way,
(2) invoice is unpaid, or
(3) defect is the result of misuse, neglect, improper installation, environmental
conditions, non-authorized repair, alteration or accident.
Argus shall not be liable to the customer or other parties for any loss of profits, loss of use, costs for
removal or installation of defective equipment, damages or consequential damages based upon
equipment failure during or after the warranty period. There shall be no other obligations either
expressed or implied. Argus will not honor warranties for batteries and other third party products
without prior written Argus authorization.
Freight Policy
Customer is responsible for all shipping and handling charges (COD and freight collect will not be
accepted without prior approval from Argus Technologies).
Terms of Payment (North America)
Payment terms are net 30 days subject to prior credit approval. All other orders require payment
before shipping.
Terms of Payment (International)
Payment terms are subject to prior approval and are typically through Tele-Transfer.
Return Material Policy
Our RMA policy is designed to ensure prompt, efficient and high quality factory service. A Return
Material Authorization (RMA) number must be obtained before products can be accepted for
servicing by the Argus factory. For returns to an authorized service center (refer to “Authorized
Service Centers” for locations), please consult the individual service center for specific return policies
and instructions.
To obtain a RMA number for a factory return, customers must call the appropriate location with the
product serial and model number, as well as a brief description of the problem, shipment instructions
and billing details.
The original packing container should be used whenever possible. Both the shipping documents
and the outside of the box must have the RMA # clearly marked and the product shipped prepaid to
the Argus factory service center. Argus will endeavor to repair products within five working days of
receipt. Repairs to the returned product are warranted for a period of six months. A service charge
may be applied if no fault is found in the returned product. Argus will not accept products without an
RMA number.
Business Hours
Argus North American office hours are 7:30 am to 5:00 pm (Pacific Standard Time) Monday to Friday.
WARRANTY AND REPAIR INFORMATION
Canada and USA toll free 24 hour emergency technical support: +1 888 GO ARGUS (462 7487) Outside North America: [phone]
Factory Service Centers
Canada and International
Argus Technologies Ltd.
ATTN: RMA Returns
7033 Antrim Avenue
Burnaby, BC, V5J 4M5 Canada
Tel: [phone]
Fax: [phone]
Email: [e-mail]
USA
Argus Technologies Inc.
ATTN: RMA Returns
3116 Mercer Avenue
Bellingham, WA, 98225 USA
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Asia-Pacific
PCM Electronics (Dong Guan) Co., Ltd.
Hongli Industrial Area, Miaobian, Liaobu Town,
Dongguan City, Guangdong Province,
523400 China
Tel: [phone]
Fax: [phone]
Authorized Service Center
Argentina
Argus Technologies de Argentina
Belen 315, Capital Federal, Buenos Aires,
1407l Argentina
Tel: [phone]
Fax: [phone]
Cell: [phone]
Email: [email protected]
Asia
Argus Technologies Asia Pte Ltd
Blk 6 Tagore Lane #160
Singapore 787570
Tel: [phone]
Fax: [phone]
Australia
CPS National
8/376 Newbridge Rd
Moorebank, NSW, 2170 Australia
Tel: [phone]
Fax: [phone]
Australia/New Zealand
Alpha Power Systems Pty Ltd
Unit 3, 30 Heathcote Road
Moorebank, NSW, 2170 Australia
Tel: [phone]
Fax: [phone]
Century Yuasa
37 - 65 Colbalt Street
Carole Park QLD 4300
Australian Sales & Service
Tel: [phone]
Fax: [phone]
New Zealand Sales & Service
Tel: [phone]
Fax: [phone]
Canada
Compower Systems Inc.
118 Tiffield Road
Toronto, ON, M1V 5N2 Canada
Tel: [phone]
Fax: [phone]
Europe
Alpha Technologies Europe Ltd.
Cartel Business Estate
Edinburgh Way
Harlow, Essex, CM20 2DU UK
Tel: [phone]
Fax: [phone]
Mexico & Central America
Technologies Argus First De Mexico SA de CV
Anatole France No. 17
Col. Polanco
Mexico City, 11560 Mexico
Tel: [phone]
Fax: [phone]
South America
Argus Technologies Argentina
Santo Tome 2573, Capital Federal
Buenos Aires, 1416 Argentina
Tel: [phone]
Cell: [phone]
E-pager: [email protected]
Turkey
IPC Enerji Elk San ve TIC AS
Inonu cad. Kanarya sok. No:20
Yenisahra - Kadikoy
Istanbul, Turkey
Tel: [phone]
Fax: [phone]
048-507-10-I1 Rev S (09/2007)

What are the CSA and NRTL?
CSA (Canadian Standards Association also known as CSA International) was established in 1919 as
an independent testing laboratory in Canada. CSA received its recognition as an NRTL (Nationally
Recognized Testing Laboratory) in 1992 from OSHA (Occupational Safety and Health Administration) in
the United States of America (Docket No. NRTL-2-92). This was expanded and renewed in 1997, 1999,
and 2001. The specic notications were posted on OSHA’s ofcial website as follows:
Federal Register #: 59:40602 - 40609 [08/09/1994]
Federal Register #: 64:60240 - 60241 [11/04/1999]
Federal Register #: 66:35271 - 35278 [07/03/2001]
When these marks appear with the indicator “C and US” or “NRTL/C” it means that the product is
certied for both the US and Canadian markets, to the applicable US and Canadian standards. (1)
Argus rectier and power system products, bearing the aforementioned CSA marks, are
certied to CSA C22.2 No. 950 and UL 1950, or CSA/UL 60950.
As part of the reciprocal, US/Canada agreement regarding testing laboratories, the Standards Council
of Canada (Canada’s national accreditation body) granted Underwriters Laboratories (UL) authority to
certify products for sale in Canada. (2)
Only Underwriters Laboratories may grant a licence for the use of this mark, which indicates compliance
with both Canadian and US requirements. (3)
What are NRTLs and what do they do?
NRTLs are third party organizations recognized by OSHA, US Department of Labor, under the NRTL
program.
The testing and certications are based on product safety standards developed by US based standards
developing organizations and are often issued by the American National Standards Institute (ANSI). (4)
The NRTL determines that a product meets the requirements of an appropriate consensus-based
product safety standard either by successfully testing the product itself, or by verifying that a contract
laboratory has done so, and the NRTL certies that the product meets the requirements of the product
safety standard. (4)
When was the NRTL started and who governs it?
In 1983, in a suit brought on by an independent testing laboratory, OSHA was court ordered to remove
specic references to UL (Underwriters Laboratories) and FMRC (Factory Mutual Research Corporation)
from its regulations.
In 1988, OSHA revised its regulations to remove those references and the NRTL program was
established.
The NRTL Program is both national and international in scope with foreign labs permitted.
References:
Information in this document has been developed from the ofcial websites of the respective
organizations.
(1) www.csa-international.org
(2) www.scc.ca
(3) www.ulc.ca
(4) www.osha.gov
CSA/NRTL — MARKS — BACKGROUND
argusdcpower.com
048-554-10-I1 Rev C (2004/02)
The product on which either of these marks appear
has been certied by CSA as meeting applicable
Canada/US standards.
The product on which this mark
appears has been certied by UL
as meeting applicable Canada/US
standards.

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IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
1. Please read this manual prior to use to become familiar with the product’s numerous features and operating
procedures. To obtain a maximum degree of safety, follow the sequences as outlined.
2. This manual provides warnings and special notes for the user:
a. Points that are vital to the proper operation of the product or the safety of the operator are
indicated by the heading: WARNING.
b. A notation that is in Bold Italic typeface covers points that are important to the performance
or ease of use of the product.
3. Before using the product, read all instructions and cautionary markings on the product and any equipment
connected to the product.
4. Do not expose the product to rain or snow; install only in a clean, dry environment.
5. CAUTION – Unless otherwise noted, use of an attachment not recommended or sold by the product
manufacturer may result in a risk of fire, electric shock, or injury to persons.
6. CAUTION – Do not operate the product if it has received a sharp blow, it has been dropped, or otherwise
damaged in any way – return it to a qualified service center for repair.
7. CAUTION – Do not disassemble the product – call our qualified service centers for servicing. Incorrect
reassembling may result in a risk of electrical shock or fire.
i

ii
TABLE OF CONTENTS
1INTRODUCTION ............................................................................................................................................................. 1
1.1 Scope of the Manual ..................................................................................................................................... 1
1.2 Product Overview.......................................................................................................................................... 1
1.3 Part Numbers and List Options..................................................................................................................... 1
2SYSTEM FEATURES, CONTROLS AND DISPLAYS ............................................................................................................ 2
2.1 Shelf Features............................................................................................................................................... 2
2.2 RSM 48/10 Power Module Features............................................................................................................. 3
2.3 Supervisory Module (Optional) ..................................................................................................................... 5
3INSPECTION.................................................................................................................................................................. 8
3.1 Packing Materials.......................................................................................................................................... 8
3.2 Check for Damage ........................................................................................................................................ 8
4INSTALLATION .............................................................................................................................................................. 9
4.1 Safety Precautions ........................................................................................................................................ 9
4.2 Tools Required.............................................................................................................................................. 9
4.3 Shelf Preparation/Mounting .......................................................................................................................... 9
5MODULE INSERTION/REMOVAL ................................................................................................................................... 10
5.1 Removal ...................................................................................................................................................... 10
5.2 Installation ................................................................................................................................................... 10
6SHELF GROUNDING, WIRING AND CONNECTIONS......................................................................................................... 11
6.1 Safety Precautions ...................................................................................................................................... 11
6.2 AC Feeder Protection.................................................................................................................................. 11
6.3 AC Input Connections ................................................................................................................................. 11
6.4 Grounding ................................................................................................................................................... 11
6.5 DC Output Connections .............................................................................................................................. 11
6.6 Alarm and Control Connections/Configuration ........................................................................................... 11
6.7 Temperature Compensation Connections/Configuration............................................................................ 12
7INITIAL START-UP ....................................................................................................................................................... 13
8OPERATION AND ADJUSTMENTS ................................................................................................................................. 14
8.1 Start-up ....................................................................................................................................................... 14
8.2 Shutdown .................................................................................................................................................... 14
8.3 Adjustments ................................................................................................................................................ 14
9MAINTENANCE ........................................................................................................................................................... 19
9.1 Fuse Replacement ...................................................................................................................................... 19
10 ARGUS CONVENTIONS ................................................................................................................................................ 20
10.1 Numbering System...................................................................................................................................... 20
10.2 Acronyms and Definitions ........................................................................................................................... 20

Argus Technologies Ltd. 030-692-C0 Rev A WC
Printed in Canada. © 2006 Argus Technologies Ltd. ARGUS is a registered trademark of Argus Technologies Ltd. All Rights Reserved. Page 1 of 20
1 Introduction
1.1 Scope of the Manual
This instruction manual explains the installation, interconnection and operation of Argus Technologies’ RSM 48/10
Top Input/Output 19" Shelf for 30A System.
NOTE: To aid the user with installation, frequent reference is made to foldout drawings located at the rear of the manual.
1.2 Product Overview
A complete rectifier system consists of up to three power modules and a supervisory module in a common shelf
enclosure.
The shelf has top access connections for AC inputs, DC output, and various alarm/control relays. A TPS fuse
block and a digital LCD output voltage meter are located on the right front panel.
The rectifier modules in this system use a high frequency, switched mode conversion technique to provide a fully
regulated and isolated DC output from the AC mains. Rectifier power modules are “hot swappable” meaning they
can be inserted or removed from the shelf without cutting power to or from the system or the load. Additional
power modules can be included with the system at the time of ordering or added after the shelf has been
installed.
1.3 Part Numbers and List Options
This product is available to order under the following part numbers and list options:
Description Part Number/List Option
RSM 48/10 top input/output 19” shelf, 240Vac input .................................................................................030-692-20
Basic system ...................................................................................................................................................... *List 0
Low voltage disconnect (LVD) ...........................................................................................................................List 36
Standard temperature, 0 to +50 deg.C (+65 deg.C derated).............................................................................List 40
Extended temperature, -40 to +50 deg.C (+65 deg.C derated) .........................................................................List 42
Gray finish ........................................................................................................................................................ *List 55
Positive ground ................................................................................................................................................ *List 84
Blank plate, power module, front .......................................................................................................................List 90
Blank plate, supervisory .....................................................................................................................................List 91
Blank plate, power module, top..........................................................................................................................List 93
AC line cord, top access, 250V, 30A, NEMA 14-30P, 5 feet ......................................................................... *List 101
DC output cable, top access, 2x2 circuit Amp connector, 96” ....................................................................... *List 102
* Default option
Supervisory, analog ...................................................................................................................................018-550-20
RSM 48/10 power module, 240VAC input .................................................................................................010-529-20
The above information is valid at the time of publication. Consult factory for up-to-date ordering information.

Argus Technologies Ltd. 030-692-C0 Rev A WC
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2 System Features, Controls and Displays
2.1 Shelf Features
The shelf encloses the rectifier and supervisory modules, output fuse and voltmeter panel and includes two
remote alarm connections as standard.
2.1.1 Alarms
The shelf’s alarms – alarm “1” and “2” – are extended via jumper selectable form A/B relay contacts for remote
monitoring. Additional jumpers located on the backplane and supervisory PCBs allow alarm conditions to be
assigned to either alarm relay 1 or 2:
• Major (rectifier)
• Minor (rectifier)
• AC Fail
• Low Voltage Alarm (LVA)
• High Voltage Alarm (HVA)
• Low Voltage Disconnect (LVD) alarm
• Fuse/Circuit Breaker Fail alarm.
NOTE: The first three alarms – Major, Minor and AC Fail – are standard shelf alarms – included with every RSM 48/10
Top Input/Output 19" Shelf for 30A System – while the other alarms are part of the optional supervisory module.
All alarms are “real time” and therefore do not latch. Alarm contacts are “fail safe,” (i.e., relay is de-energized
during an alarm condition) and are meant to extend an alarm, to the monitoring device, in the absence of a DC
power source (i.e., a battery).
See drawings at the rear of the manual for the location of alarm terminals and other features.
2.1.1.1 Major Alarm
This alarm extends a signal when two or more power modules have failed.
2.1.1.2 Minor Alarm
This alarm extends a signal when one power module has failed.
NOTE: If only one power module is installed in a shelf and that module fails, both major and minor alarms are extended.
2.1.1.3 AC Fail Alarm
This alarm extends a signal when the AC has failed at one of the shelf’s input terminals.
2.1.2 Sensing
The power module sense leads are connected to output studs on the backplane PCB. The modules will regulate
voltage at this point.
2.1.3 Fuse/Output Voltage Panel
The panel provides a digital display of the output voltage and a TPS output fuse (see Specifications).

Argus Technologies Ltd. 030-692-C0 Rev A WC
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2.2 RSM 48/10 Power Module Features
The power module converts 208/220/240VAC line voltage to 48Vdc battery voltage. Features of the power
module include indicators, protection and adjustment functions.
Figure 1–Front perspective view of RSM 48/10 power module
2.2.1 Indicators
The indicators provide visual indication of operational status and alarms. The indicators and associated colors
are:
AC Power On/OK Green
AC/Module FAIL Steady Red Light
OVP Trip Red Light Flashing; 60% On; 40% Off
OVP Fail Red Light Flickering; 5% On; 95% Off
12.5A Current 5th Bar Graph Segment Lit
10.0A Current 4th Bar Graph Segment Lit
7.5A Current 3rd Bar Graph Segment Lit
5.0A Current 2nd Bar Graph Segment Lit
2.5A Current 1st Bar Graph Segment Lit
Current/Power Limit Any Flashing Bar Graph Segment
Reading tolerance: 5%
Under normal operating conditions, the AC POWER ON/OK indicator will light. The indicator will not illuminate if
the AC input is off.
2.2.2 Potentiometers
Output voltage (VADJUST) and Output Current Limit (IADJUST) potentiometers are located on the power module to
allow manual adjustment of these settings.
2.2.3 True Module Fail Alarm
The power modules have a “true” fail alarm. This provides a true indication of the power module’s ability to source
current.
When the module’s current output drops below 5% of the rated output, the Module Fail detection circuit is
activated. This circuit momentarily ramps up the output voltage by approximately one volt to determine if the
module will source current. If no increase in current is detected, the Module Fail and No Output Power alarms are
activated. The module will test every 60 seconds for the condition until current is detected. Output voltage
ramping will cease upon detection of current.

Argus Technologies Ltd. 030-692-C0 Rev A WC
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Output voltage ramping and the Module Fail alarm will not activate when a battery is connected to the rectifier
system.
A minimum 2.5% load is required to avoid the No Output Power alarm. Activation of this alarm could indicate a
failed module.
2.2.4 Over Voltage Protection (OVP)
2.2.4.1 OVP and High Voltage Shutdown (HVSD)
The Over Voltage Protection (OVP) feature shuts down the module when a high output voltage
condition occurs; the internal software is preset to verify the condition three times in one minute.
Indication is through a flickering red LED. The OVP level is preset at 63V.
2.2.4.2 Supervisory (Remote) OVP and OVP Fail
The optional supervisory module provides for an adjustable OVP setting. This feature allows the
supervisory module to isolate and shut down a power module causing an over voltage
condition. A flickering red LED on the malfunctioning power module indicates an OVP Fail
condition. This means that the power module has ignored the remote OVP control signal.
2.2.5 Bar Graph Ammeter
A Bar Graph Ammeter is located on the front panel of each power module. Each green LED segment represents
a 2.5A increase in output current. The segments illuminate from bottom to top successively, corresponding to
increases in output current. The Ammeter operates in “Dot Mode,” which means that no two segments will light
simultaneously. Only the segment that is nearest to the output current will illuminate. If an LED segment is
flashing, this indicates a Current or Power Limit condition.
2.2.6 Voltage Test Points
Module voltage test points monitor the module output voltage before the output fuse. A high impedance digital
voltmeter (DVM) should be used to measure the voltage. The impedance of the meter should be at least 10MΩ.
2.2.7 Current Limiting/Short Circuit Protection
Each power module has an adjustable current limit range between 3 to 12.5A. Maximum current output is
constant up to short circuit conditions. Current limit level will be reduced if ambient temperature is increased
above 50°C (122°F). The current limit function determines the maximum current output limit of the module,
regardless of output voltage or power.
2.2.8 Power Limiting
Each power module is designed to limit power output to the listed Watt rating. This enables more current to be
supplied at lower output voltages. This in turn reduces the time needed to recharge a discharged battery and
provides additional power in overload conditions.
2.2.9 Soft Start
To eliminate an instantaneous demand on the power module upon application of AC power, a soft start feature is
used. This feature is sometimes referred to a “current walk-in”. The output of the module is gradually ramped up
from zero amps to the load requirement (110% maximum). Current limiting the output accomplishes this ramping.
The circuit ramps at a rate of 20 - 25% per second.
2.2.10 AC Low Voltage Shutdown
The power module is electronically protected from low voltages to the input by fault detection circuitry. If the input
to the module falls below the lower AC input limit, the unit will shutdown. The major alarm indicator Module Fail
LED will illuminate, and relays will de-energize. The unit will resume normal operation immediately upon
restoration of normal line conditions. The module will enter start delay when the input is returning from a low AC
mains condition.

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2.2.11 AC Inrush/Transient Suppression
The power modules’ inrush current is limited to prevent surges on the AC line. Modules are capable of
withstanding input lightning and transient surges in accordance with ANSI/IEEE C62.41 Category B3.
2.2.12 Input/Output Fuses
Every power module is equipped with fuses. Abnormal or fault conditions may blow the input or output fuse
causing the Module Fail LED to illuminate.
2.2.13 Over Temperature Protection
Each module is protected in the event of an air blockage and/or an extreme increase in temperature. Under these
conditions, the module’s output current capacity is reduced to keep the temperature of the power semiconductors
within operating limits. Normal capacity will be returned automatically when the ambient temperature is reduced or
the restriction to the airflow is removed. When over temperature protection is in effect, current limit will occur
before nominal full load at approximately 50°C (122°F).
2.2.14 Cooling
Cooling of the unit is achieved via bottom to top convection cooling. Cool air is drawn up through the heatsinks
and out the top of the module.
2.2.15 Output Slope Sharing
RSM 48/10 rectifiers use “negative output slope” or “regulation offset” to accomplish load sharing. When the
rectifiers are run in parallel, they automatically adjust to share the load over the output current range of the units.
Slope is preset at -1% percent of the output voltage.
2.2.16 Battery Eliminator Operation
The unit maintains all specifications with or without a battery attached to the output. However, if a battery or
another unit in parallel is not present, the various alarm LEDs may not illuminate during a failed condition.
2.3 Supervisory Module (Optional)
The optional supervisory module provides additional monitoring and control functions for the rectifier and battery
system.
2.3.1 Indicators
The indicators provide visual indication of alarms and control functions. The indicators and associated LED colors
are:
AC Fail Red – No AC Input Voltage
Fuse/CB Red – Output Fuse Blown/Circuit Breaker Trip Alarm
OVP Red – Over Voltage Protection
HVA Red – High Voltage Alarm
LVA Red – Low Voltage Alarm
LVD Red – Low Voltage Disconnect
Test Red – Test Mode Activated
Temp Comp Green – Temperature Compensation Activated
Temp Comp Fault Flashing Green – Temp Sensor discrepancy detected
2.3.2 Potentiometers
OVP, HVA, LVA, LVD, and Test potentiometers are located on the supervisory module to allow manual
adjustment of these control settings (see Section 8 for instructions on adjusting potentiometers and drawing #018-
550-06 for location details).

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2.3.3 Alarm Configuration
Using jumpers, each of the alarm conditions on the supervisory module (i.e., AC Fail, Fuse/CB, OVP, HVA, LVA
and LVD) can be assigned to either of the shelf alarm relays 1 or 2. Jumpers are located on the Supervisory PCB
(see drawing #018-550-06 for location details).
2.3.4 AC Fail Alarm
This alarm indicates that AC input to one or more of the power modules has failed.
2.3.5 Adjustable Over Voltage Shutdown (OVP Shutdown)
This feature deactivates the power module that is causing an over voltage condition. An output current exceeding
8% of the nominal current rating while a high voltage is detected on the module’s output triggers the shutdown; as
indicated by a flashing Module Fail LED.
The OVP can be temperature compensated similar to the module’s output voltage (see section 2.2.4 and 8.3.3.2
for instructions on setting and adjusting the OVP and diagnosing false alarms).
2.3.6 High Voltage Alarm (HVA)
This alarm monitors the output voltage and extends an alarm when it exceeds the set point. If the voltage
continues to increase, the OVP feature will activate. The HVA may be temperature compensated.
2.3.7 Low Voltage Alarm (LVA)
This alarm monitors the output voltage and extends an alarm when the output voltage drops below the set point.
This feature may be used to give advance warning of load disconnect (if so equipped) in a power failure condition.
2.3.8 Low Voltage Disconnect (LVD, Optional)
The LVD control circuitry monitors the output voltage and provides a signal to disconnect the load via a contactor
(included with this option) to protect the battery from being excessively discharged by the load during an extended
power outage. In such conditions, load disconnection also prevents damage to equipment, which is sensitive to
very low voltages. When AC power returns, the LVD control automatically reconnects the load after a short
battery pre-charge period.
2.3.9 Test Mode
Depressing the switch on the front panel makes selection of the Test mode. Indication is through illumination of
the Test indicator. When in the Test mode, the system’s alarm levels can be set without disturbing the load.
Selection of this mode transfers the alarm circuit sensing to an internal test supply. Using a small slot screwdriver,
the operator can adjust the alarm set points. When in the Test mode the Test, LVA, HVA, LVD and OVP are the
only active indicators. Corresponding output relays and control circuits are not active. If the LVD option is installed
the contactor will remain closed (load in circuit).
2.3.10 Battery Temperature Compensation
Battery life expectancy and performance is directly related to “battery ambient temperature.” The optimum
temperature for battery operation is 25°C (77°F). Without compensation, battery life is seriously compromised at
temperatures above 25°C, while battery performance is reduced below it.
Adjusting the battery’s float voltage to correspond with temperature fluctuations will ensure maximum battery
performance and life expectancy. This may be accomplished by one of the following methods:
For non-fluctuating temperatures – manually adjust the rectifier float voltage control to match
the battery manufacturer’s recommended setting for the specific battery ambient temperature.
For fluctuating temperatures – automatically adjust the rectifier float voltage using the
temperature compensation feature built into the supervisory module.
This feature automatically adjusts battery float voltage based on the temperature reading from one or two
probes/sensors mounted on the battery string.

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Temperature compensation occurs at standard rates commonly referred to as “Slope” settings. For maximum
performance, it is important to match the compensation slope with the slope recommended by the battery
manufacturer. The optional supervisory module offers three different slope settings: 2.5mV per cell per °C; 3.5mV
per cell per °C; and 4.5mV per cell per °C. The slope setting is selected by removing the supervisory module and
moving the corresponding jumper to the correct position (see sections 6.7 and 8.3.2.3 for more detail.)
In addition to temperature compensating the system output voltage, the OVP and HVA settings should also be
temperature compensated to maintain them at a constant value above the compensated output voltage. Similarly,
the OVP/HVA jumper selectable slope setting on the supervisory PCB should be adjusted to match the output
voltage slope setting.
The temperature compensation feature has a built-in low breakpoint of 0°C (32°F) and a high breakpoint of 65°C
(149°F). Compensation will only occur within this temperature range (0-65°C or 32-149°F). Further temperature
decreases or increases will NOT cause an increase or decrease in the output voltage.
The temperature compensation feature incorporates fail-safe circuitry to prevent it from driving the rectifier system
to a voltage higher than is suitable for the load or battery. The system can accommodate one or two probes for
temperature monitoring. The second probe is used for redundancy purposes, not to compensate a second battery
string. If two probes are used, both probes must be connected to the same negative battery post. If either probe
fails or the probes do not agree within a temperature range of 7°C (13°F), temperature compensation will not
occur, the Temp Comp LED will flash, and the system will reset to the nominal float voltage at 25°C (77°F). The
temperature compensation feature can be manually turned on/off via a switch on the front panel.

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3 Inspection
3.1 Packing Materials
All Argus products are shipped in rugged, double walled boxes and suspended via solid inserts to minimize shock
that may occur during transportation. Packaging assemblies and methods are tested to International Safe Transit
Association standards.
Products are also packaged with Cortex. This plastic wrap contains a corrosive-inhibitor that protects the product
from corrosion for up to two years.
3.1.1 Returns for Service
Save the original shipping container. If the product needs to be returned for service, it should be packaged in its
original shipping container. If the original container is unavailable, make sure the product is packed with at least
three inches of shock-absorbing material to prevent shipping damage.
NOTE: Argus Technologies is not responsible for damage caused by the improper packaging of returned products.
3.2 Check for Damage
Prior to unpacking the product, note any damage to the shipping container. Unpack the product and inspect the
exterior for damage. If any damage is observed contact the carrier immediately.
Continue the inspection for any internal damage. In the unlikely event of internal damage, please inform the
carrier and contact Argus Technologies for advice on the impact of any damage.
Verify that you have all the necessary parts per your order for proper assembly.

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4 Installation
This section is provided for qualified personnel to install the product, which shall be mounted in a clean and dry
environment.
NOTE: To aid the user with installation, frequent reference is made to foldout drawings located at the rear of the manual.
4.1 Safety Precautions
WARNING
Hazardous voltages are present at the input of power systems. The DC output from the rectifiers
and battery system, though not dangerous in voltage, has a high short circuit current capacity
that may cause severe burns and electrical arcing.
Before working with any live battery or power system/distribution center, the following precautions should be
followed:
• Remove all metallic jewelry; e.g., watches, rings, metal rimmed glasses, necklaces.
• Wear safety glasses with side shields (and prescription lenses if necessary) at all times during installation.
Insulated metallic tools shall be used.
The installer should follow all applicable local rules and regulations for electrical and battery installations; e.g.,
CSA, UL, CEC, NEC, OSHA, and local fire codes.
4.2 Tools Required
Various tools are essential for product installation. Use this list as a guide:
• Philips head screwdriver, #2 (tip size 3/16”)
• Slot head screwdriver (blade size .09” x .02”) or tweaker
• Digital voltmeter equipped with test leads
• Cutters and wire strippers (#10 to #24AWG)[6 to 0.25mm2]
• Adjustable 48Vdc load (optional)
• Combination wrenches (Imperial measure).
4.3 Shelf Preparation/Mounting
Allow at least 6” of clearance in front and 1.75” of free air space above and below the unit for uninterrupted air
flow. See Outline drawing 030-692-06.
The shelf has been designed as a replacement per the customer’s specifications. There are four mounting holes
on each side of the shelf, two in the front and two toward the rear. Remove the front panels to access/install shelf
mounting hardware. Refer to Customer Connections drawing 030-692-08.
Washers (such as internal tooth) that are designed to cut through the painted surface must be used under the
mounting screws (where feasible) to ensure a good chassis ground.

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5 Module Insertion/Removal
WARNING
Only qualified personnel familiar with AC and battery voltage should attempt to change modules
while the rectifier shelf is energized. Remove rings, watches and other jewelry before performing
this procedure. Keep fingers clear of live electric parts while unit is energized.
HIGH VOLTAGE AND SHOCK HAZARD.
Do not force a module into position if it does not seat properly! All units are keyed to ensure that
the correct module is used.
5.1 Removal
To remove modules/panels, loosen the two screws on the bottom and top of the faceplate. The screws are a
captive type – do not remove completely. Grasp module handle and pull out.
5.2 Installation
To (re) insert module, slide into the board guides – ensure module chassis is properly engaged in slides – and
apply pressure on the handles to engage the rear connector in the shelf receptacle. Re-tighten the faceplate
screws.
NOTE: To aid the user with installation, frequent reference is made to foldout drawings located at the rear of the manual.