Argus Pathfinder User manual

Pathfinder 48V-1.5kW
Modular Switched Mode
Rectifier System
010-548-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.
This page intentionally left blank.

Argus Technologies Ltd. 010-548-B2 Rev B WC
Printed in Canada. © 2004 Argus Technologies Ltd. ARGUS is registered trademark of Argus Technologies Ltd. All Rights Reserved.
Pathfinder 48V-1.5kW
Modular Switched Mode Rectifier System
010-548-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: 010-548-B1 Rev A
• Warranty Policy: 048-507-10
• Safety, Installation and Operation Instructions: 010-548-C0 Rev A
• Outline Drawings
19” Cabinet: 030-633-06
23” Cabinet: 030-634-06
• Customer Connections
19” Cabinet: 030-633-08
23” Cabinet: 030-634-08
• Spare Parts List: 010-548-G0
Factory Service Information: 048-527-10

MANUAL ADDENDUM
MANUAL ADDENDUM
Unit Description: Pathfinder 1.5kW & 2kW Modular Switched Mode Rectifier Systems
Manual P/N: 010-548-C0 Applies to Manual Revision: A
Applies to Manuals: 010-548-B2 (48V-1.5kW) and 010-558-B2 (48V-2kW)
# Date Page# Correction to be implemented
1 07-06-12 7, 15, 20
of 010-548-C0 NOTE: For Pathfinder 48-1.5kW and 48V-2kW rectifiers in the same shelf (or system)
utilizing an Argus SM Series controller, set the current limit to no more than 33A (the
maximum of the lower power unit).
Authorized by: FORM 954-010-10 010548c0a1_addendum_limit.doc Page 1 of 1

SPECIFICATIONS FOR ARGUS’ SWITCHED MODE RECTIFIER PATHFINDER 48V-1.5kW
Power Module Output
Voltage: 42 to 60VDC
Current: 0 to 33ADC
Maximum Power: 1500W continuous/module @ 50 to 56VDC
Heat Dissipation: 500 BTU/hr
Regulation: ±25mV line and load at zero slope
Transient Response: ≤2ms to 0.1% of output for 50 to 100% load step
<1% deviation for 50 to 100% load step
<2% deviation for 10 to 90% load step
Time Stability: ≤0.2% per year
Temperature Stability: ≤100ppm/°C over the operating range
Noise: ≤22dBrnC with battery (Voice Band)
≤10mVrms, 10kHz to 10MHz (Wide Band)
≤150mVp-p, 10kHz to 100MHz
EMI: The unit meets the requirements of:
EN 55022 (CISPR 22): 1994, Class B
FCC Part 15, Class B
ICES-003, Class B
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.
ARGUS TECHNOLOGIES PAGE 1OF 3 010-548-B1 REV A

SPECIFICATIONS FOR ARGUS’ SWITCHED MODE RECTIFIER PATHFINDER 48V-1.5kW
Power Module Input
Voltage: 208 to 240VAC nominal
176 to 265VAC operating
90 to 312VAC extended range
(derated output power or input power factor)
Frequency: 45 to 70Hz
Current: 8A (208VAC nominal) @ 1500W/output
7A (240VAC nominal) @ 1500W/output
Power Factor: >0.99 true @ 50 to 100% load
T.I.F. (Current): <120 at 100% load
Efficiency: ≥91% @ 50 to 100% load (at nominal input voltages)
Source Impedance: <25% inductive or 5% resistive
Fuse Type/Rating: Bussmann ABC-15 / 15A, 250VAC fast blow
10kA @ 125VAC
Input Transient Suppression: Meets IEEE/ANSI C62.41 Category B3
Miscellaneous
3 Module Cabinet Size: 133mm H x 432mm W x 346mm D1
(5.25" H x 17" W x 13.6" D)
4 Module Cabinet Size: 133mm H x 533mm W x 346mm D1
(5.25" H x 21" W x 13.6" D)
Cabinet Mounting: 19” or 23”, flush, 1-1/8” offset, 6” offset
Acoustic Noise: <60dBa @ 1m (3 ft)
Module Weight: 5.7kg (12.5 lb.)
3 Module Cabinet Weight: 7.3kg (16 lb.)
4 Module Cabinet Weight: 8.6kg (19 lb.)
Alarm Connection Ratings: 60VDC, 0.5A maximum
Environmental
Temperature: 0 to 65°C (32 to 149°F) [standard operating]
-40 to 65°C (-40 to 149°F) [extended operating]
-55 to 85°C (-67 to 185°F) [storage]
Humidity: 0 to 95% non-condensing
Elevation: -500 to 3000m (-1640 to 9843 ft)
1359mm D (14.1” D) including rear terminal cover.
ARGUS TECHNOLOGIES PAGE 2OF 3 010-548-B1 REV A

SPECIFICATIONS FOR ARGUS’ SWITCHED MODE RECTIFIER PATHFINDER 48V-1.5kW
ARGUS TECHNOLOGIES PAGE 3OF 3 010-548-B1 REV A
Standards
Safety: CSA C22.2 No. 950-95
UL 1950-1995
EN 60950-1993 with Amendments 1-4, with deviation for
Germany (CB Scheme).
Electromagnetic Compatibility:
FCC 47 CFR Part 15:1998 Class B Radiated & Conducted Emissions
ENV 50204-1996 Radiated Electromagnetic Immunity Digital Radio Telephones
EN 55022 (CISPR 22):1994 Class B Radiated & Conducted Emissions
ICES-003 Class B
EN 61000-3-2:1995 Harmonic Current Emissions
EN 61000-4-2:1995 ESD Immunity
EN 61000-4-3:1996 Radiated Electromagnetic Immunity
EN 61000-4-4:1995 Electrical Fast Transients/Burst Immunity
EN 61000-4-5:1995 Power Line Surge Immunity Installation Class 4
EN 61000-4-6:1997 Conducted Electromagnetic Immunity
EN 61000-4-11:1994 Voltage Dips, Short Interruptions, Variations
IEEE/ANSI C62.41:1991 Surge Voltages, Location Category B3.
General:
Bellcore GR-63-CORE:1995 Vibration & Shock, (Transport / Shock Packaged) Category A,
(4.3.1 and 4.4.4)
Recommended Connection Wire Sizes (as per UL/CSA)
For operation @ 30°C: Recommended Feeder Breaker
(serves as a disconnect device for its associated modules):
#14 AWG, 3 Mod 3 Feed 15A, 1PH
#8 AWG, 3 Mod 1 Feed 40A, 1PH
#10 AWG, 3 Mod 3 Phase 25A, 3PH
#14 AWG, 4 Mod 4 Feed 15A, 1PH
#6 AWG, 4 Mod 2 Feed 50A, 1PH
#10 AWG, 4 Mod 2 Feed 25A, 1PH
NOTE: Check with local and/or national electrical codes for specific input wiring requirements,
including temperature derating factors, etc.
Field Connection Terminals
AC Input: #10 - #14 AWG individual module feed
(mechanical compression)
#6 - #8 AWG single module feed (19” cabinet)
#10 AWG 3-phase (19" cabinet only)
#6 AWG single module feed (23” cabinet)
#10 AWG dual module feed (23” cabinet)
DC Output: 3/8" 2 hole terminal 1” spacing lugs
(customer supplied)
3/8”-20 x ¾” bolts with lock and flat washers
(Argus supplied)
Control/Alarm: #14 - #26 AWG (mechanical compression)
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)

IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important safety and operating
instructions for the Argus Pathfinder 1.5kW & 2kW rectifier series.
1. Please read this manual thoroughly prior to use to become familiar with the rectifier’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 or safety of the operator are indicated by the head-
ing: WARNING.
b. A notation that is in Bold Italic typeface covers points that are important to the performance
or ease of use of the rectifier.
3. Before using the rectifier, read all instructions and cautionary markings on the rectifier and any
equipment connected to the rectifier.
4. Do not expose the rectifier to rain or snow.
5. CAUTION – Unless otherwise noted, use of an attachment not recommended or sold by the rectifier
manufacturer may result in a risk of fire, electric shock, or injury to persons.
6. CAUTION – Do not operate the rectifier if it has received a sharp blow, been dropped, or otherwise
damaged in any way – return it to a qualified service center for repair.
7. CAUTION – Do not disassemble the rectifier – call our qualified service centers for servicing. Incor-
rect reassembling may result in a risk of electrical shock or fire.

This page intentionally left blank.

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
CONTENTS
1INTRODUCTION .......................................................................................................................1
1.1 Scope of the Manual ..................................................................................................................1
1.2 Product Overview ......................................................................................................................1
1.3 Part Numbers and List Options..................................................................................................2
2SYSTEM FEATURES, ALARMS AND CONTROLS ........................................................................3
2.1 Shelf Features ............................................................................................................................3
2.2 Power Module Features .............................................................................................................5
2.3 Module Fail Alarms ...................................................................................................................9
2.4 General Alarms ..........................................................................................................................9
3INSPECTION .........................................................................................................................11
3.1 Packing Materials ....................................................................................................................11
3.2 Check for Damage ...................................................................................................................11
4SHELF INSTALLATION ...........................................................................................................12
4.1 Safety Precautions....................................................................................................................12
4.2 Tools Required.........................................................................................................................12
4.3 Preparation/Mounting ..............................................................................................................12
5SHELF GROUNDING, WIRING AND CONNECTIONS ..................................................................13
5.1 Safety Precautions....................................................................................................................13
5.2 Chassis Ground ........................................................................................................................13
5.3 AC Feeder Protection/Sizing ...................................................................................................13
5.4 AC Input Connections .............................................................................................................13
5.5 DC Output Connections...........................................................................................................14
5.6 Alarm and Control Connections ..............................................................................................14
5.7 Remote Communications Connections....................................................................................14
6INITIAL START-UP AND CHECKOUT........................................................................................15
7OPERATION AND ADJUSTMENTS ...........................................................................................16
7.1 Start-up and Reset Procedure (after initial system installation)...............................................16
7.2 Module Installation and Removal............................................................................................16
7.3 Modes Of Operation ................................................................................................................16
7.4 Menu Structure ........................................................................................................................17
7.5 Menu Descriptions...................................................................................................................17
7.6 Miscellaneous Defaults/Adjustments/Controls........................................................................22
7.7 Factory Defaults and Ranges ...................................................................................................23
8REMOTE COMMUNICATIONS..................................................................................................24
8.1 Multiple Shelf Connections (RS-485) .....................................................................................24
8.2 Connecting the SM Series Panel (RS-485)..............................................................................24
8.3 Communications using a PC/Terminal ....................................................................................25
9MAINTENANCE AND SERVICE ................................................................................................26
9.1 Maintenance.............................................................................................................................26
i

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
9.2 Service..................................................................................................................................... 26
10 ARGUS CONVENTIONS..........................................................................................................28
10.1 Numbering System .................................................................................................................. 28
10.2 Acronyms and Definitions....................................................................................................... 28
FIGURES
Figure 1–Front perspective view of Pathfinder 19” shelf (with 1.5kw or 2kW modules)............................ 1
Figure 2–Front view of Pathfinder (1.5kW or 2kW) shelf (modules removed) ........................................... 3
Figure 3–Front perspective view of power module ...................................................................................... 5
Figure 4–Pathfinder LCD in Normal mode ................................................................................................ 16
Figure 5–Pathfinder menu tree.................................................................................................................... 18
Figure 6–Pathfinder communications connections ..................................................................................... 24
TABLES
Table A–Alarm wiring connections............................................................................................................ 14
Table B–Control wiring connections .......................................................................................................... 14
Table C–Adjustments menu defaults .......................................................................................................... 23
Table D–Remote communications menu defaults ...................................................................................... 23
Table E–Test menu defaults........................................................................................................................ 23
Table F–Navigation and status commands ................................................................................................. 25
Table G–Sample maintenance log .............................................................................................................. 26
ii

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
1 INTRODUCTION
1.1 Scope of the Manual
This instruction manual explains the installation, interconnection and operation of Argus Technologies' Path-
finder 1.5kW and 2kW modular, switched mode rectifier systems. The topics covered include: product speci-
fications, features, installation and configuration, operation and maintenance.
NOTE: All references to the Pathfinder 48 VDC output rectifier system, also apply to the Pathfinder
24VDC output rectifier system, unless specified otherwise.
To aid the user with installation, frequent reference is made to foldout drawings located at the rear of the
manual.
1.2 Product Overview
The Pathfinder 1.5kW and 2kW rectifier modules 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 sys-
tem or the load. Additional power modules can be included with the system at time of ordering or added after
the shelf has been installed.
A complete rectifier system consists of one or more power modules and a common shelf enclosure to output
up to 4.5kW (three 1.5kW modules) or 6kW (four 1.5kW modules or three 2kW modules) or 8kW (four 2kW
modules). The shelf has connections for AC inputs, DC output, and various alarm/control relays.
The Pathfinder rectifier system is designed to operate with the Argus SM series of system control panels via
RS-485 shelf connectors for communications. This allows the user to setup, control and monitor the entire
power system and ancillary components from one central, easy-to-use source.
Pathfinder power modules can be adjusted and monitored locally via an optional front panel control-key inter-
face and LCD display option.
Figure 1–Front perspective view of Pathfinder 19” shelf (with 1.5kw or 2kW modules)
010-548-C0 REV A PAGE 1OF 28

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
1.3 Part Numbers and List Options
The Pathfinder 1.5kW or 2kW is available to order under the following part numbers and list options:
Description Part Number/List Option
Pathfinder 48V-1.5kW power module.................................................................................................010-548-20
Pathfinder 24V-1.5kW power module.................................................................................................010-549-20
Pathfinder 48V-2kW power module ...................................................................................................010-558-20
Basic module ..............................................................................................................................................*List 0
Standard temperature, 0 to +65 deg.C ........................................................................................................List 40
Extended temperature, -40 to +65 deg.C.................................................................................................... List 42
Gray finish................................................................................................................................................ *List 55
No LCD display/keypad .............................................................................................................................List 80
With LCD display/keypad.......................................................................................................................... List 81
Extended float voltage, 42-58V (48V-2kW power module only) ..............................................................List 89
Pathfinder 19” shelf.............................................................................................................................030-633-20
24VDC output (24V-1.5kW power module only)........................................................................................ List 1
48VDC output .............................................................................................................................................. List 2
Universal mount ..................................................................................................................................... **List 18
6” offset mount for 19”rack.................................................................................................................... **List 19
Flush mount............................................................................................................................................ **List 21
6” offset mount for 23”rack.................................................................................................................... **List 23
Flush mount for 23”rack......................................................................................................................... **List 25
Standard temperature.................................................................................................................................. List 40
Extended temperature................................................................................................................................. List 42
Gray finish................................................................................................................................................ *List 55
Multiple feed, 1-phase................................................................................................................................List 80
Single feed, 1-phase....................................................................................................................................List 82
Single feed, 3-phase....................................................................................................................................List 83
Module blank plate, front ........................................................................................................................... List 90
Module blank plate, front and top .............................................................................................................. List 91
Pathfinder 23” shelf.............................................................................................................................030-634-20
24VDC output (24V-1.5kW power module only)........................................................................................ List 1
48VDC output .............................................................................................................................................. List 2
Universal mount ..................................................................................................................................... **List 18
Flush mount............................................................................................................................................ **List 21
6” offset mount for 23”rack.................................................................................................................... **List 23
Flush mount for 23”rack......................................................................................................................... **List 25
Standard temperature.................................................................................................................................. List 40
Extended temperature................................................................................................................................. List 42
Gray finish................................................................................................................................................ *List 55
Multiple feed, 1-phase................................................................................................................................List 80
Single feed, 1-phase....................................................................................................................................List 82
Dual feed, 1-phase......................................................................................................................................List 84
Module blank plate, front ........................................................................................................................... List 90
Module blank plate, front and top .............................................................................................................. List 91
* Default option
** Default option is List 18 for shipping. Customer may then re-configure as desired.
The above information is valid at the time of publication. Consult factory for up-to-date ordering information.
PAGE 2OF 28 010-548-C0 REV A

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
2 SYSTEM FEATURES, ALARMS AND CONTROLS
2.1 Shelf Features
The Pathfinder’s shelf contains connections for up to four rectifier power modules, AC input, DC output, sev-
eral remote alarm/controls, and RS-485 communications. When the power modules are removed from the
shelf, all cabling connections to the shelf are front-accessible with exception of DC outputs. DC connections
are made at the rear of the shelf. (DC cable entry is at the side of the shelf.)
2.1.1 Shelf Descriptions
A brief description of each shelf feature is show below:
Side Entrance for AC Cable
Universal Mounting Brackets
Rear Knockout for AC Cable
Module AC Input Connectors
48/24 VDC Polarizing Pin and
Module DC Out
p
ut Connectors Module Control/Alarm Connectors
Removable Wireway Cover
for Shelf AC
Removable Wireway Cover fo
r
Customer Connections
(access not shown)
Figure 2–Front view of Pathfinder (1.5kW or 2kW) shelf (modules removed)
NOTE: Not all features appear as displayed on all models.
010-548-C0 REV A PAGE 3OF 28

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
2.1.2 Shelf Alarms
The rectifier shelf has alarms entitled RECTIFIER MAJOR, RECTIFIER MINOR, GENERAL ALARM, and
AC FAIL. All alarms are “real time” and therefore do not latch. The minor and major alarm contacts are “fail
safe” and will extend an alarm even without a DC power source.
2.1.2.1 Rectifier Major Alarm
Indicates a module fail alarm condition is present in two or more power modules.
2.1.2.2 Rectifier Minor Alarm
Indicates a module fail alarm condition is present in one or more power modules.
2.1.2.3 General Alarm
Indicates a general alarm condition is present in one or more power modules.
2.1.2.4 AC Fail Alarm
Indicates loss of AC to one or more power modules.
2.1.3 Remote Equalize Control
A remote equalize control is available on the shelf for placing the power modules in Equalize mode. This fea-
ture operates when a positive or negative DC signal is applied to the REQ terminal with regards to REMOTE
COMMON.
2.1.4 Remote Shutdown
A remote shutdown input is present on the shelf for each module to allow turning off individual modules.
2.1.5 Remote Sense
A remote sense connection is available for regulating the output voltage of the rectifier at a remote point such
as at the system battery. With no connection to the remote sense input, the rectifier will regulate its output
voltage at the rectifier output terminals.
2.1.6 Remote Monitoring and Control
All local controls and monitoring are accessible via the RS-485 serial communications interface. The Path-
finder shelf provides two connections for serial communications with other rectifier shelves as well as super-
visory and control panels. This allows RS-485 cables to be “daisy-chained” from rectifier shelf to rectifier
shelf.
PAGE 4OF 28 010-548-C0 REV A

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
2.2 Power Module Features
The power module converts AC line voltage (refer to the specifications near the front of this manual) to
nominal 48 or 24 VDC output. The following section details the various features of the power modules:
Figure 3–Front perspective view of power module
2.2.1 LED Indicators
The LED indicators provide visual indication of module operational status and alarms. The indicators and as-
sociated colors are as follows:
2.2.1.1 AC Mains OK
This indicator illuminates when AC input to the Pathfinder is within the valid range and flashes when out of
the normal range (described below).
2.2.1.2 Flashing AC Mains OK
The AC Mains OK LED will flash when the input voltage is out of range, but the module will continue to op-
erate down to 90VAC (current limit gradually reduces automatically to approx. 15% of maximum rated at
90VAC). At a lower voltage, the module will shutdown, indicating an AC Mains Fail condition and the AC
LED will extinguish.
2.2.1.3 Module ON/OK
The Module ON/OK LED illuminates when the module is running and sourcing power normally. The indica-
tor will turn off under the following conditions:
• Remote or local shutdown
• High voltage shutdown
• Thermal shutdown
• Start-up pending
2.2.1.4 Flashing Module ON/OK
Quickly press and release the power button to view output current while the module is online. The Module
ON/OK LED will flash once for every 20% (approx.) of the maximum output current.
010-548-C0 REV A PAGE 5OF 28

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
2.2.1.5 Module FAIL
This indicator illuminates if the module is unable to source power as a result of any of the following condi-
tions:
• Remote or local shutdown
• Input or output fuse blown
• AC Mains Input Fail
• High voltage shutdown
• Thermal shutdown
• UPF fail
• No output power
• Start-up pending
If the unit output is not connected to a battery or parallel rectifier, this LED may extinguish when the power
runs out.
2.2.1.6 General Alarm
The red LED will flash during the following conditions:
• VAC meter fail
• AC mains input low
• AC mains input high
• Fan fail
• Over temperature foldback
• Low output voltage
• Current limit (programmable option)
• Temperature Sense Fail
• Fan speed error
• High output voltage
• Menu access from local display
• Soft start operation
2.2.2 OFF/ON (O/I) Button
The front panel O/I button shuts down the output power from the module. This button is also used to read the
module’s output current. To shut the module down, press and hold the button for 3 seconds and release. Press-
ing and holding the button for longer than five seconds (and releasing) causes the module to shutdown and
then restart immediately — the Pathfinder interprets this as a remote signal to turn the module on. To get a
reading of output current, quickly press and release the power button. The lower green LED will flash for
every 20% (approx.) of maximum rated output current.
2.2.3 Liquid Crystal Display (Optional)
Pathfinder modules can be equipped with 2 x 16 character liquid crystal display (LCD) panel for local control
and monitoring. This enables all of the module’s operating parameters, status and alarms to be viewable from
this display.
2.2.4 Control Buttons (Included with LCD Option)
Modules with the LCD option have three control buttons located on the front panel. They are labeled with an
up arrow, down arrow and a curved arrow (ENTER). The up and down arrow buttons allow the user to scroll
through the software menus and adjust values, whereas, the curved arrow button allows the user to enter func-
tions and switch between Float and Equalize modes.
PAGE 6OF 28 010-548-C0 REV A

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
2.2.5 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 output current drops below 2.5% of the rated output, the Module Fail de-
tection circuit is activated. This circuit momentarily ramps up the output voltage 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 once every 60 seconds for the condition until current is detected. Output volt-
age ramping will cease upon detection of current. A minimum 2.5% load is required to avoid the No Output
Power alarm. Activation of this alarm could indicate a failed module or a failed load.
NOTE: A battery connected to the output of the rectifier will draw current when the voltage ramp occurs.
Therefore the rectifier fail alarm will not be generated with a battery connected.
2.2.6 Thermal Protection
2.2.6.1 Thermal Shutdown
A module will shutdown and extend an alarm if the internal ambient temperature exceeds 75°C (167°F). The
module will restart when the ambient internal temperature drops below 70°C (158°F). The module will also
shut down if the heatsink temperature exceeds 125°C (257°F). When the heatsink temperature is less than
110°C (230°F) it will restart. The fan continues to operate during these shutdown conditions, unless the ambi-
ent temperature exceeds 80°C (176°F).
2.2.6.2 Over Temperature
Each module is protected in the event of an excessive increase in heatsink temperature due to fan failure or
cooling airflow blockage. When the heatsink temperature exceeds normal maximum, the module's output cur-
rent is reduced by 7% of maximum output current per °C to keep the temperature of the power semiconduc-
tors within operating limits until a maximum reduction at 125°C (257°F). Beyond this point the module goes
into thermal shutdown. Normal capacity will be returned automatically when the heatsink temperature is re-
duced below 100°C (212°F).
2.2.7 Wide AC Range
An alarm is generated when the AC input voltage drops below specification. In this situation, current limit
setting is reduced (in accordance with the input VAC) initially to 93% of the maximum output current @
170VAC and at a linear rate down to approximately 15% at 90VAC. At a lower voltage the module will shut-
down and will not restart until the AC is greater than 100VAC.
2.2.8 Current Limit/Short Circuit Protection
Each module has an adjustable current limit. The current limit function determines the maximum output cur-
rent limit of the module, regardless of output voltage or power. Maximum output current is limited to a con-
stant value down to short circuit condition.
Current limiting can be used to limit the battery recharge current after the battery has been discharged for any
reason.
2.2.9 Power Limiting
Each module is designed to limit power output to the module specification. This enables more current to be
supplied at lower output voltages, and allows matching of output to the demand of constant power loads,
normally seen with telecom equipment.
Flooded batteries may also be recharged faster with this feature.
NOTE: Current limiting overrides the power-limiting feature.
2.2.10 Soft Start
To eliminate an instantaneous demand on the AC source, a soft start feature is employed. Soft Start, some-
times referred to as “current walk-in”, works by gradually ramping the current limit up from zero to the actual
or defined customer setting. The output voltage is ramped up from the minimum voltage to the Float voltage.
The output current then increases at a rate of 3A (10%) per second (6A per second for the 24V module).
010-548-C0 REV A PAGE 7OF 28

ARGUS TECHNOLOGIES PATHFINDER 1.5KW & 2KW
2.2.11 High Voltage Shutdown (HVSD)
The High Voltage Shutdown (HVSD) feature provides protection to the load from over voltage conditions
originating from the rectifiers. It operates by shutting down the offending module when a high output voltage
condition occurs. Indication is through a red LED. Modules will restart automatically when the HVSD condi-
tion clears. However, if more than three over voltage conditions occur in one minute, the module will latch off
and remain shut down until it is reset. When in HVSD pressing and releasing the O/I switch will restart the
module.
2.2.12 AC Inrush/Transient Suppression
The modules' inrush current is limited to less than one time the nominal peak line current to prevent surge on
the AC line. Modules are capable of withstanding input lightning and transient surges in accordance with
IEEE/ANSI C62.41 Category B3.
2.2.13 Input/Output Fuses
Each module is equipped with fuses. Abnormal or fault conditions may blow the input or output fuse causing
the red Module Fail LED to illuminate.
2.2.14 Forced Cooling
Each module is equipped with a front-mounted fan. The fan operates at temperatures above -10°C (14°F).
Cooling of the module is front-to-rear with the hot exhaust exiting at the back.
2.2.15 Battery Eliminator Operation
Modules maintain all specifications (except where indicated) with or without a battery attached to the output.
However, if a battery or another module supplying DC voltage in parallel is not present, there will be no
monitoring or control activity if there is an AC power failure.
2.2.16 Start Delay
The modules are equipped with a delay timer in order to stagger start a series of modules to prevent excessive
loading of generators upon start-up. The built-in timer delays the turn on of the module depending on the
value programmed. A minimum one-second delay is preset to allow charging of the input capacitors.
2.2.17 Float/Equalize/Test Modes
Modules can operate in one of three modes at any given time. The Float mode is the default-operating mode,
where the rectifiers are supplying normal output voltage to the load and/or batteries. The Equalize mode is
used when it is desired to increase the charging to the batteries to equalize cell voltages. Lastly, the Test mode
offers an extended voltage range for testing functions such as SYSTEM ALARMS.
NOTE: Exercise caution when using the Manual Test function in Test mode. Adjustments to this feature
will directly affect the module’s output voltage and could result in a disruption of service.
2.2.18 Security Access Codes
An adjustable three-digit security code is programmed into the Pathfinder modules to prevent access to criti-
cal control functions by unauthorized users.
2.2.19 Battery Test Mode
This feature can be used to safely test the performance of a battery system connected to the output of the recti-
fier.
When initiated, the rectifier will force its output voltage down to a programmed level and the battery will be
allowed to discharge through the connected load down to this voltage. When the voltage level is reached or
after a programmed duration has expired, the rectifiers will be returned to Float mode (or Equalize mode if
auto equalize is enabled).
Since the rectifiers are still on-line, this test can be performed without risk of dropping the load. An SM series
power system monitor for battery capacity measurements.
PAGE 8OF 28 010-548-C0 REV A