Innovative Cordex 125-4.4kW010-589-20 User manual

Cordex 125-4.4kW
Modular Switched Mode Rectifier
Installation & Operation Manual
Part # 010-589-B2
Effective: 01/2013
P: [phone] F: [phone]E: [email protected] W: www.innovative.co.nz
Innovative Energies Ltd. 1 Heremai Street, Auckland, New Zealand 0612,

Cordex 125-4.4kW
Modular Switched Mode Rectifier
010-589-B2 Rev B
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:
• Installation and Operation Instructions: 010-589-B2
• Specications, Cordex 125-4.4kW: 010-589-B1
• CSA/NRTL Equivalence: 048-554-10
• Outline Drawing, 19" Shelf: 030-769-06
• Customer Connections, 19" Shelf: 030-769-08

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 or 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.
8. WARNING – The output voltages of the product are hazardous. Extreme caution should be maintained when
servicing or touching conductive components connected to the product’s output.

i
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
2RECTIFIER FEATURES...................................................................................................................................................2
2.1 Front Panel....................................................................................................................................................2
2.2 Rear Panel....................................................................................................................................................3
2.3 True Module Fail Alarm.................................................................................................................................3
2.4 Heat Dissipation............................................................................................................................................3
2.5 Over Temperature Protection .......................................................................................................................4
2.6 Wide AC Range ............................................................................................................................................4
2.7 AC Inrush/Transient Suppression.................................................................................................................4
2.8 Soft Start .......................................................................................................................................................4
2.9 Start Delay ....................................................................................................................................................4
2.10 Current Limit/Short Circuit Protection ...........................................................................................................4
2.11 Power Limiting...............................................................................................................................................4
2.12 High Voltage Shutdown (HVSD)...................................................................................................................5
2.13 Battery Eliminator Operation.........................................................................................................................5
3INSPECTION..................................................................................................................................................................6
3.1 Packing Materials..........................................................................................................................................6
3.2 Check for Damage........................................................................................................................................6
4INSTALLATION..............................................................................................................................................................7
4.1 Safety Precautions........................................................................................................................................7
4.2 Shelf Preparation/Mounting ..........................................................................................................................7
4.3 Rectifier Module Insertion/Removal..............................................................................................................7
5WIRING AND CONNECTIONS ..........................................................................................................................................8
5.1 Safety Precautions........................................................................................................................................8
5.2 Tools Required..............................................................................................................................................8
5.3 Power System Chassis Ground and DC Ground Reference........................................................................8
5.4 AC Feeder Protection/Sizing.........................................................................................................................8
5.5 AC Input Connections...................................................................................................................................8
5.6 Calculating Output Wire Size Requirements.................................................................................................9
5.7 DC Output Connections................................................................................................................................9
5.8 CAN Serial Ports.........................................................................................................................................10
6OPERATION................................................................................................................................................................ 11
6.1 Main Rectifier States...................................................................................................................................11
6.2 Main Rectifier Modes ..................................................................................................................................12
6.3 Can Bus Communications...........................................................................................................................12
6.4 Factory Ranges and Defaults .....................................................................................................................13
7SYSTEM STARTUP ......................................................................................................................................................14
7.1 Check System Connections........................................................................................................................14
7.2 Verify AC and Power the Shelf ...................................................................................................................14
7.3 Check Battery Polarity and Connect...........................................................................................................14
7.4 CXC Reset..................................................................................................................................................14

ii
8MAINTENANCE ...........................................................................................................................................................15
8.1 Spare Parts List...........................................................................................................................................15
8.2 Fan Replacement........................................................................................................................................16
8.3 MOV Replacement......................................................................................................................................17
9WARRANTY................................................................................................................................................................ 18
10 ABBREVIATIONS AND ACRONYMS................................................................................................................................ 19
FIGURES
Figure 1–Cordex 125-4.4kW rectifier front panel .............................................................................................................2
Figure 2–CAN serial ports and termination selection.....................................................................................................10
Figure 3–Fan replacement .............................................................................................................................................16
Figure 4–MOV replacement ...........................................................................................................................................17

010-589-B2 Rev BPage 1 of 19
1 Introduction
1.1 Scope of the Manual
125-4.4kW modular switched mode rectifiers.
NOTE: To aid the user with installation, frequent reference is made to drawings located at the rear of the manual.
1.2 Product Overview
A complete Cordex rectifier system consists of one or more power modules in a common shelf enclosure. The
shelf has connections for AC inputs, DC output, and system communications.
Cordex rectifier modules use a high frequency, switched mode conversion technique to provide a fully regulated
and isolated DC output from the AC mains. The rectifier input is wide range to allow use on 208/220/240Vac
50/60Hz electrical service.
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.
The CXC allows the user to configure, monitor and control the entire DC power system from its touch screen
display similar to that used in a Personal Digital Assistant (PDA). Other features of the unit include temperature
compensation, auto equalization, remote access, dial out on alarm, battery diagnostics, as well as Web server
and Simple Network Management Protocol (SNMP) support for configuration and monitoring.
Details of controller operation are provided in the current version software manual.
There are two external CXC models of the system controller that communicate with the shelf via offset RJ-12
shelf connectors. The CXCR is mounted in a rack and the CXCP is (factory) mounted in a panel.
See manual #018-570-B2.
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
Cordex 125-4.4kW rectifier power module.................................................................................................010-589-20
Basic module......................................................................................................................................................*List 0
Charcoal finish with white (contrasting) silkscreen ..........................................................................................*List 56
Cordex 125-4.4kW 19" shelf, flush mounting, single phase ac input.........................................................030-769-20
Basic shelf, may be equipped with up to five Cordex 125-4.4kW modules**....................................................*List 0
19" mid-mount....................................................................................................................................................List 19
23" mid-mount....................................................................................................................................................List 23
DC output, bus bar adapters, 16" deep..............................................................................................................List 82
Kydex rear cover................................................................................................................................................List 89
Module blank......................................................................................................................................................List 90
* Default option
** See drawings at the rear of this manual.
The above information is valid at the time of publication. Consult factory for up-to-date ordering information.
This instruction manual explains the installation, interconnection, and operation of IE - Cordex
The shelf rectifier system is designed to operate with the IE - Cordex System Controller (CXC).

010-589-B2 Rev BPage 2 of 19
2 Rectifier Features
2.1 Front Panel
Figure 1–Cordex 125-4.4kW rectifier front panel
2.1.1 LEDs
The front panel LEDs provide:
•Rectifier status summary,
•Rectifier software upgrade in progress indication,
•Locate module pattern.
Rectifier status summary will show the rectifier alarm status, communication fail status and rectifier on/off status.
2.1.1.1 AC ON
The top LED (green) is on when AC is within valid range. The LED will flash (~2Hz) when AC is
outside the nominal range – AC voltage is invalid if the AC Mains Low or AC Mains High
alarm is active. The LED turns off when AC has failed.
2.1.1.2 DC ON
The middle LED (green) is on when the rectifier is delivering power to the load. The LED will
flash when communication is lost. The LED turns off when the rectifier is off; e.g., when
commanded via the CXC.
2.1.1.3 ALARM
The bottom LED (red) is on continuously in the event of an active Module Fail alarm; if the
module is unable to source power as a result of any of the following conditions:
Output fuse blown
AC Mains Input Fail
Module fail (ramp test fail)
High voltage (OVP) shutdown
Thermal shutdown
Local shutdown
UPF fail
No output power
Fan (1 and 2) fail.
The LED will flash (~2Hz) when a minor alarm is detected; if the modules output capability has
been reduced or a minor component failure is detected during the following conditions:
VAC meter fail
AC foldback
Remote equalize
Fan (1 or 2) fail
Low output voltage
High output voltage
Current limit (programmable option)
Power limit (programmable option)
High temperature foldback
Temperature sense fail
Soft start operation
Communications lost.
LEDs
Thumbscrew

010-589-B2 Rev BPage 3 of 19
The LED remains off in the absence of an alarm. If the unit output is not connected to a battery
or parallel rectifier, the LED will extinguish if no AC power is present.
2.1.1.4 LED Activity During Software Upload
When a rectifier software upload is in progress, the LEDs will behave in a distinctly different way
to indicate new rectifier software is being transferred from the CXC.
When a rectifier data transfer is in progress, all three LEDs will flash in a sequence lasting 1.5
seconds. When the last LED is lit, the sequence is repeated beginning at the first LED.
2.1.1.5 LED Activity During ‘Locate Module’ Command from CXC
When the ‘locate module’ command has been received from the CXC, the LEDs will behave in
another distinct fashion so that the rectifier is easier to visually identify among adjacent
rectifiers.
This state is entered when commanded via the CXC. The LEDs will flash in a ping-pong pattern
repeating every 2 seconds.
The ping-pong pattern lights each LED sequentially. After the last LED is lit, each LED is lit in
reverse sequence. When the first LED is lit, the pattern repeats. The effect makes it appear as if
the light is bouncing between the first and last LED.
2.1.2 Mechanical
A thumbscrew is provided to secure the rectifier into the shelf. During normal operation the rectifier shall be
locked into position. A handle (or grip) is incorporated into the front panel to facilitate the removal of the rectifier
from the shelf. No special tools are required.
2.2 Rear Panel
Located on the rear panel of the rectifier is a single connector for shelf power and communications.
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 output current drops below 2.5% of the rated output a low output current condition is
detected and the Module Fail detection 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 alarm is
activated. The module will test once every 60 seconds for the condition until current is detected. Output voltage
ramping will cease upon detection of current1. A minimum 2.5% load is required to avoid the Ramp Test Fail
alarm; this can typically be provided with the parallel system battery. Activation of this alarm could indicate a failed
module or a failed load.
NOTE: For Cordex rectifier systems without batteries (or with a very light load; below 2.5% of rated output) it is
recommended that the ramp test be disabled to avoid nuisance alarms. The Ramp Test feature is
enabled/disabled via the CXC menu item: Rectifiers, Configure Settings.
2.4 Heat Dissipation
Each rectifier module is equipped with at least one front-mounted fan. The fan operates at temperatures above
0°C (32°F). Cooling of the module is front-to-rear with the exhaust air exiting at the back. The fan is variable
speed; which is determined by heatsink temperature and load.
1Under normal conditions, 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.

010-589-B2 Rev BPage 4 of 19
2.5 Over Temperature Protection
Each rectifier module is protected in the event of an excessive increase in temperature due to component failure
or cooling airflow blockage. During over temperature conditions, the rectifier limits the output power as well as the
output current. If temperature continues to increase, a shutdown of the rectifier is initiated. The rectifier shall
restart automatically if the temperature has returned to a safe level.
2.6 Wide AC Range
A minor alarm is generated when the AC input voltage drops below specification. Rectifier output power is
reduced linearly between 187Vac and 90Vac to 40% of the rated output power (the unit will deliver derated output
power down to 80Vac).
At 80Vac, the module will shut down and will not restart until the AC is greater than or equal to 90Vac; however,
the restart voltage depends on the load current. At reduced load current the unit may restart with the input voltage
as low as 100Vac.
For voltages above 265Vac, power factor and total harmonic distortion may be derated. Up to 312Vac, the
rectifier will be operational and shall not suffer any damage.
2.7 AC Inrush/Transient Suppression
The inrush current of the rectifier module is limited to the full load steady state line current to prevent surge on the
AC line. Modules are also protected from input lightning and transient surges in accordance with IEEE/ANSI
C62.41 Category B3.
2.8 Soft Start
To eliminate an instantaneous demand on the AC source, a soft start feature is employed. Soft Start, sometimes
referred to as “current walk-in”, works by gradually (up to five seconds) ramping the current limit up from zero to
the actual or defined customer setting. The rectifier output voltage is ramped up from the minimum voltage to the
float voltage.
2.9 Start Delay
The rectifier 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 selected (up to 120 seconds) via the CXC. A minimum one-second delay is preset to allow charging of
the input capacitors.
2.10 Current Limit/Short Circuit Protection
The current limit function determines the maximum output current limit of the rectifier module, regardless of output
voltage or power. Maximum output current is limited to a constant value down to short circuit condition. Current
limiting can be used to mate the rectifier output current ampacity to the needs of the load and parallel battery to
minimize excessive battery recharge current.
The rectifier will sustain a short circuit at the output terminals indefinitely. The maximum short circuit current shall
not exceed 105% of the rated full load current.
2.11 Power Limiting
Each rectifier 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.
This feature may also be used for a faster recharge of flooded batteries paralleled with the load.
NOTE: Current limiting overrides the power-limiting feature.

010-589-B2 Rev BPage 5 of 19
2.12 High Voltage Shutdown (HVSD)
This feature provides protection to the load from over voltage conditions originating from the rectifiers. It operates
by shutting down the offending rectifier module when a high output voltage condition occurs. Indication is through
the red Alarm (Module Fail) LED. Modules will restart automatically; 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 via the CXC.
2.13 Battery Eliminator Operation
Rectifier modules maintain all specifications (except where indicated) with or without a battery attached in parallel
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 or input fuse failure.

010-589-B2 Rev BPage 6 of 19
3 Inspection
3.1 Packing Materials
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.
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
Verify that you have all the necessary parts per your order for proper assembly.
All IE products are shipped in rugged, double walled boxes and suspended via solid inserts to minimize shock
NOTE: IE is not responsible for damage caused by the improper packaging of returned products.
carrier and contact IE for advice on the impact of any damage.

010-589-B2 Rev BPage 7 of 19
4 Installation
WARNING
This product must be installed in a restricted access location. Only qualified or trained personnel
are allowed access to the equipment. Failure to do so may result in electric shock.
This chapter 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 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
is classified as hazardous voltage and 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, eyeglasses, necklaces.
•Wear safety glasses with side shields at all times during installation.
Metallic tools must be insulated.
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 Shelf Preparation/Mounting
The 19" shelf has been designed for flush mounting in a standard 19" relay rack. Universal mounting brackets
allow for mid-mounting in a 19" or 23" rack. The configuration depends on the options chosen.
See drawing 030-769-06.
NOTE: The shelf shall be mounted in a clean and dry environment. Allow at least 1.75" of free space in front of the unit
for unrestricted cooling airflow.
Mounting brackets accommodate either 1" or 1-3/4" rack spacing. The shelf should be mounted to the rack using
at least two #12 – 24 x 1/2" screws in each bracket. Philips-type screws and screwdriver should be used to
eliminate the possibility of slippage and scratching of the unit’s exterior. Washers (such as internal tooth) or
special screws that are designed to cut through the painted surface should be used to ensure a good chassis
ground.
4.3 Rectifier Module Insertion/Removal
Insert by placing the rectifier module on the shelf bottom and sliding the module into the rear connector (inside of
the shelf). Apply pressure on the module handle to engage the rear connector in the shelf receptacle.
NOTE: It is recommended that the first module be inserted into the front leftmost position using the side of the shelf as a
guide. Subsequent modules may be inserted using the previous module as a guide.
Tighten the screw on the bottom of the faceplate to secure the module to the shelf.
NOTE: Do not force a module into position if it does not seat properly. All modules are keyed to ensure that the correct
module (voltage/polarity) type is used.
To remove a module, loosen the screw on the bottom of the faceplate. Grasp handle and pull out, sliding the
module away from the rear connector and out of the shelf.

010-589-B2 Rev BPage 8 of 19
5 Wiring and Connections
Cordex 125-4.4kW modular switched mode rectifier.
5.1 Safety Precautions
WARNING
Hazardous AC voltages may be present. Ensure power at the AC service panel is off before
attempting work on the AC connections. Use a voltmeter to verify the absence of voltage. Clearly
mark the correct polarity of the battery leads before commencing work on DC connections.
Refer to the previous (Installation) chapter for additional safety precautions.
5.2 Tools Required
Various tools are essential for product installation. Use this list as a guide:
•Slot head screwdrivers (blade sizes: 1/4", 1/8", 1/16")
•Philips head screwdriver, #2 (tip size 3/16")
•Digital voltmeter equipped with test leads
•Adjustable 125/220Vdc load (optional)
•Cutters and wire strippers
•Crimping tool (optional for large gauge wire)
•Socket and rachet set (Imperial measure).
5.3 Power System Chassis Ground and DC Ground Reference
WARNING
For safety reasons, ensure the system is properly bonded to the building’s ground grid.
125/220Vdc systems are typically floating; i.e., not connected to earth ground.
Connect the chassis ground to the site ground to ensure correct operation of the system and to prevent drifting
floating analog (especially current) readings.
5.4 AC Feeder Protection/Sizing
To maximize system reliability, each power module should be fed from a dedicated protection feeder breaker
located at the AC distribution panel. The feeder breaker can also act as the disconnect device for the connected
5.5 AC Input Connections
WARNING
Use care when removing or replacing the covers for the AC input connections. Never assume that
an electrical connection or conductor is not energized.
CAUTION: AC input wires should be routed in flexible or rigid conduit as far away as possible
from the DC power wires to minimize EMI disturbances.
Ensure all modules are removed from the shelf.
The wireway is designed for two customer-supplied 1” conduit fittings for AC supply located one on each side of
the shelf.
Remove the metal covers (2 places) from the rear of the shelf to expose the AC input terminal blocks, L1 and L2
for each rectifier. Each terminal pair relates to an individual power module as marked.
Attach the conduit retainers to the wireway hole(s) and route the AC cables through.
Secure the wires to the AC input and chassis ground terminals as required.
This chapter provides cabling details and notes on cable sizing for DC applications with respect to the IE -
module. Refer to the specifications at the front of this manual for IE recommendations.

010-589-B2 Rev BPage 9 of 19
Tighten the cable connector to the AC cable (conduit similar).
Replace rear cover(s) once all connections have been completed.
5.6 Calculating Output Wire Size Requirements
Wire size is calculated by first determining the appropriate maximum voltage drop requirement. Using the formula
below calculate the CMA wire size requirement. Determine the size and number of conductors required to satisfy
the CMA requirement.
CMA = (A x LF x K) / AVD, where:
CMA = Cross section of wire in circular MIL area
A = Ultimate drain in amps
LF = Conductor loop feet
K = 11.1 constant factor for commercial (TW type) copper wire
AVD = Allowable voltage drop
Check again that the ampacity rating of the cable meets the requirement for the installation application. Consult
local electrical codes (NEC, CEC, etc.) for guidelines. If required, increase the size of the cable to meet the code.
5.7 DC Output Connections
WARNING
Leave cables or bus bars disconnected at battery and verify output polarity using a voltmeter.
Make battery connections only after all other wiring is completed.
DC output wire shall be UL approved XHHW or RHH/RHW (for Canadian users, RW90 Type). Control and sense
wires shall be UL approved Style 1015 (for Canadian users, TEW type).
5.7.1 Cable
Terminate cable leads with appropriate crimp lugs for 3/8" holes on 1" centers.
Secure the positive and negative to the shelf output post of the correct polarity; i.e., +Vcable to +Vpost. Ensure
the washers are on the bolts in the same order in which they were shipped from the factory. Tighten the bolts as
per Customer Connections drawing at the rear of this manual.
5.7.2 Bus Bar
Bus bar adapters may be factory-installed, for the option selected, to easily accommodate direct connections to
customers’ vertical bus bars.
Secure the positive and negative to the shelf output post of the correct polarity; i.e., +Vcable to +Vpost. Ensure
the washers are on the bolts in the same order in which they were shipped from the factory. Tighten the bolts as
per Customer Connections drawing at the rear of this manual.

010-589-B2 Rev BPage 10 of 19
5.8 CAN Serial Ports
rectifiers and other CAN-enabled equipment. These are located on the left side of the shelf (as viewed from the
front).
Daisy-chain from shelf to shelf (CAN OUT of one shelf to CAN IN of another) as necessary and ensure that only
the last shelf is terminated. See Figure 2.
5.8.1 CAN Termination
A jumper (or switch depending on your configuration) allows setting of the CAN OUT to be open (to the next shelf
in the system) or terminated. Termination must be enabled in final shelf on the CAN bus only. Access termination
selection (inside the shelf) by removing the leftmost rectifier #1 (MDL 1).
Figure 2–CAN serial ports and termination selection
Two CAN Serial ports (modular jacks with offset latches), are provided for communications with IE - Cordex

010-589-B2 Rev BPage 11 of 19
6 Operation
6.1 Main Rectifier States
Rectifier operation can be broken up into five main states:
1. Off,
2. Start delay,
3. Soft start,
4. Normal operation,
5. Turning off.
Each state is characterized as being distinct and necessary for the operation of the rectifier. These states are
briefly described below.
6.1.1 Off State
The rectifier will be in the Off state immediately after power is applied to the rectifier or after a rectifier shutdown.
The shutdown source may be remote or local shutdown, AC shutdown, OVP or thermal shutdown.
When the rectifier is in this state the DC-DC converter is turned off and the CXC will be monitoring its inputs for
the proper conditions to begin the start up sequence.
When the conditions have been met for the rectifier to start up, it will transition to the Start Delay state.
6.1.2 Start Delay State
When the rectifier is in the Start Delay state, the DC-DC converter is held off and still not sourcing power and is
waiting for a given amount of time before transitioning to the next state.
When in this state, the CXC continues to monitor its inputs.
After the Start Delay state the rectifier will transition to the Soft Start state.
NOTE: Soft start, or current walk-in, gradually increases the voltage and current output of the rectifier upon startup. This
is done to reduce the instantaneous load on the AC source.
6.1.3 Soft Start State
When the Soft Start state is entered, the rectifier will be turned on and the output voltage and output current will
be gradually increased. If a load is present, the rectifier will begin to source power.
When the voltage and current limit ramps have finished, the rectifier will transition to the Normal Operation state.
6.1.4 Normal Operation State
The Normal Operation state is the state that the rectifier will be in performing all of the rectifier functions and
features specified herein.
From this state, the only valid transition is to the Turning Off state. This transition will happen if the rectifier is
required to shutdown.
6.1.5 Turning Off State
The Turning Off state is entered because a short delay is required before the rectifier actually turns off to take
care of any initialization requirements.
When this short delay has elapsed, a transition to the Off state is made.

010-589-B2 Rev BPage 12 of 19
6.2 Main Rectifier Modes
In addition to Main Rectifier States, there is a set of Main Rectifier Modes. These modes can be divided into two
categories as follows:
6.2.1 Output Voltage Modes
Voltage modes can be thought of as modes that, under software control, can directly adjust the output voltage.
The qualification of ‘under software control’ is made because there are processes that occur in the rectifier that
can change the output voltage that do not adjust the output voltage directly (such as the rectifier being in current
limit).
The following table lists the five Output Voltage Modes and a description of when they are active:
Output Voltage Modes
Active when…
Float
Output voltage is set to the float voltage setting.
Equalize
Output voltage is set to the equalize voltage setting.
Battery Test
Output voltage is set to the battery test voltage setting.
Safe
Output voltage is set to the safe mode voltage setting.
Manual Test
Output voltage can be manually adjusted outside of the standard adjustment ranges.
Table A–Output voltage modes
6.2.2 Output Current/Power Modes
These modes directly affect the output current and power.
The following table lists the four Output Current/Power Modes and a description of when they are active:
Output Current/Power Mode
Active when…
Temperature foldback mode
Output current and power limit have been reduced due to high temperature of the
heatsink or internal ambient temperature sensor.
AC foldback mode
Output current and power limit have been reduced due to low AC input voltage. Note:
this will reduce the risk of tripping an AC breaker due to increased AC current draw as
the AC voltage decreases.
Short circuit foldback mode
Output current limit has been reduced due to a short circuit at the output.
Internal fault foldback mode
Output current limit has been reduced due to an internal fault.
Table B–Output current/power modes
6.3 Can Bus Communications
The CAN bus is used for communication between the rectifier and CXC.
The communication between the rectifier and CXC consists of commands and data transfer that are used during
the operation of the power system to configure the rectifier with system settings and to monitor rectifier status.

010-589-B2 Rev BPage 13 of 19
6.4 Factory Ranges and Defaults
The following tables lists the rectifier settings/ranges/defaults; changes are made via the CXC:
Setting
Range (minimum to maximum)
Default
Float (FL) Voltage
90 – 160V
130.5V
Equalize (EQ) Voltage
90 – 160V
132.9V
Battery Test (BT) Voltage
90 – 160V
106.3V
OVP
See note below – 160V
137.8V
Current Limit (CL)
9 – 100%
100%
Power Limit (PL)
0 – 100%
100%
Module Start Delay
0 – 250s
1s
System Start Delay
0 – 600s
0s
Low Voltage Alarm (LVA)
90 – 160V
106.3V
High Voltage Alarm (HVA)
90 – 160V
134.1V
EQ Timeout
1 – 2399h
30h
BT Timeout
1 – 250h
8h
Softstart Ramp-rate
Normal/Fast
Normal
CL/PL Alarm
Enable/Disable
Enable
Remote Shutdown
Enable/Disable
Enable
Ramp Test
Enable/Disable
Enable
Table C–Cordex 125-4.4kW factory ranges and defaults
NOTE: OVP cannot be set below the present system/FL/EQ/BT voltage setting or the safe mode voltage of 118.9V.