Vertiv NetSure M831A User manual

NetSure™
Mini Control Unit
User Manual (UM1M831ANA), Revision B
Specification Number: 1M831ANA
Model Number: M831A
Software Version 6.2.00

Vertiv |NetSure™ Mini Control Unit User Manual (UM1M831ANA)|Rev. B
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The information contained in this document is subject to change without
notice and may not be suitable for all applications. While every precaution
has been taken to ensure accuracy and completeness herein, Vertiv Group
Corp. assumes no responsibility, and disclaims all liability, for damages
resulting from use of this information or for any errors or omissions. Refer
to other local practices or building codes as applicable for the correct
methods, tools, and materials to be used in performing procedures not
specifically described in this document.
This document may contain confidential and/or proprietary information of
Vertiv Group Corp., and its receipt or possession does not convey any right
to reproduce, disclose its contents, or to manufacture or sell anything that
it may describe. Reproduction, disclosure, or use without specific
authorization from Vertiv Group Corp. is strictly prohibited.
Vertiv and the Vertiv logo are trademarks or registered trademarks of
Vertiv Group Corp. All other names and logos referred to are trade names,
trademarks or registered trademarks of their respective owners.
© 2019 Vertiv Group Corp. All rights reserved.

Vertiv |NetSure™ Mini Control Unit User Manual (UM1M831ANA)|Rev. B
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TABLE OF CONTENTS
Admonishments Used in this Document............................................................6
Important Safety Instructions ..............................................................................7
General Safety ...........................................................................................................................................................7
Handling Equipment Containing Static Sensitive Components..............................7
Static Warning...........................................................................................................8
Introduction ...............................................................................................................9
Preface .............................................................................................................................................................................9
Overview......................................................................................................................................................................... 9
Function Descriptions......................................................................................................................................11
Rectifier Control............................................................................................................................................................11
System Components Monitoring and System Alarms Generation..............................11
Operating Data Acquisition and Data Logs .......................................................................................11
Battery Management ..............................................................................................................................................12
Energy Management.............................................................................................................................................. 16
Power Split Feature...................................................................................................................................................17
Diesel Management Feature............................................................................................................................18
Supervisory Module (SM Modules) Monitoring............................................................................18
Maximum Current Limit Function...............................................................................................................18
Communications Function.................................................................................................................................18
FIAMM SoNick (Sodium Nickel) Battery Interface.................................................................... 19
Operation................................................................................................................. 20
Controller Initialization ..................................................................................................................................20
Controller’s Front Panel Indicators.................................................................................................... 22
Controller’s Front Panel Menu Navigation Keys and Local Display................. 22
Passwords and Privilege Levels........................................................................................................... 23
Multiple Languages Supported............................................................................................................ 23
Using the Local Keypad and Display.............................................................................................. 23
Local Menu Navigation Keys and Local Display .........................................................................23
Local Display Menus...............................................................................................................................................23
Navigating the Local Display Menus......................................................................................................24
Using the Web Interface..............................................................................................................................24
Overview.............................................................................................................................................................................24
Multiple Browsers Supported.........................................................................................................................24
Web Interface Screens .........................................................................................................................................24
Logging into the Controller via Web Interface Access.........................................................25
Setup Procedures...............................................................................................................................................26
Common Tasks Performed via the Local Keypad and/or Web
Interface....................................................................................................................................................................... 35
Procedures.......................................................................................................................................................................35
Power Split Feature ..........................................................................................................................................50
Overview............................................................................................................................................................................ 50

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FIAMM SoNick (Sodium Nickel) Batteries Interface.......................................................56
FIAMM Battery Installation and User Instructions.................................................................... 56
TL1 Interface ...........................................................................................................................................................59
General................................................................................................................................................................................ 59
Controller TL1 Feature......................................................................................................................................... 59
Machine-to-Machine HTTP Interface .......................................................................................... 60
Description...................................................................................................................................................................... 60
Using the Machine-to-Machine HTTP Interface Option....................................................60
EXAMPLE..........................................................................................................................................................................62
Resolving Alarms ................................................................................................................................................63
Local Display Menus............................................................................................. 88
Overview......................................................................................................................................................................88
Factory Default Setpoints ..........................................................................................................................88
Adjustment Range Restrictions...........................................................................................................88
Main Screen .............................................................................................................................................................89
Information Screens (accessed from the MAIN SCREEN) .......................................89
Main Menu..................................................................................................................................................................91
Local Display Menus ........................................................................................................................................91
Description of Local Display Menus Programmable Parameters............103
Settings Menu..................................................................................................................................................... 103
Maintenance Sub-Menu................................................................................................................................... 103
Energy Saving Sub-Menu............................................................................................................................... 103
Alarm Setting Sub-Menu.................................................................................................................................104
Rect Settings Sub-Menu .................................................................................................................................104
Batt Settings Sub-Menu...................................................................................................................................104
Batt1 Setting Sub-Menu...................................................................................................................................106
Batt2 Setting Sub-Menu ..................................................................................................................................106
LVD Settings Sub-Menu..................................................................................................................................106
AC Settings Sub-Menu...................................................................................................................................... 107
Other Setting Sub-Menu ................................................................................................................................. 107
Communication Sub-Menu ........................................................................................................................... 107
Sys Settings Sub-Menu....................................................................................................................................108
Web Interface Screens....................................................................................... 109
Overview of Web Function.....................................................................................................................109
Homepage ..............................................................................................................................................................109
System Status Information Area (#1 in Figure 18)........................................................... 110
System Specifications Information Area (#2 in Figure 18) ..................................... 110
Controller Specifications Information Area (#3 in Figure 18)............................... 110
Site Information Area (#4 in Figure 18)......................................................................................110
Alarms Area (#5 in Figure 18)................................................................................................................111
System Status Area (#6 in Figure 18)...........................................................................................112
General............................................................................................................................................................................... 112
Power System Status Tab............................................................................................................................... 112

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General Status Tab................................................................................................................................................ 119
Menu Navigation Area (#7 in Figure 18).................................................................................. 120
Settings Menu............................................................................................................................................................. 121
History Log Menu................................................................................................................................................... 136
System Inventory Menu ...................................................................................................................................146
Advanced Settings Menu ............................................................................................................................... 147
Accessing the Controller via a Network Management System
(NMS)...................................................................................................................... 194
General....................................................................................................................................................................... 194
NMS Supported by SNMP Agent.................................................................................................... 194
NMS Supported by SNMP v2......................................................................................................................194
NMS Supported by SNMP v3......................................................................................................................194
Parameter Setting in SNMP Manager................................................................................................. 195
MIB Installation....................................................................................................................................................195
Installation...................................................................................................................................................................... 195
Contents of the Controller’s MIB.............................................................................................................. 195
Accessing the Controller through an NMS.............................................................................195
Apply Administrative Privilege................................................................................................................... 195
ESR Configure..................................................................................................................................................... 196
Accessing the Controller via TL1 ....................................................................203
Accessing the TL1 Port .............................................................................................................................203
TL1 User Session .............................................................................................................................................203
TL1 Port Configuration.............................................................................................................................. 204
TL1 Commands, Autonomous Messages, and Error Codes Supported
by the Controller...............................................................................................................................................205
Format Overview of Required TL1 Messages.............................................................................205
Samples........................................................................................................................................................................... 207
Table of TL1 Commands Supported...................................................................................................209
Expanded Description of TL1 Commands Supported (in alphabetical
order).................................................................................................................................................................................. 210
TL1 Autonomous Messages Supported (in alphabetical order)............................... 219
List of Error Codes for TL1 Commands Supported (in alphabetical
order)..................................................................................................................................................................................223
Replacement Procedures ..................................................................................224
Controller Replacement............................................................................................................................224
Controller Digital Input and Relay Output Connections........................... 226
Controller Digital Inputs............................................................................................................................226
Controller Relay Outputs .........................................................................................................................226
Specifications....................................................................................................... 227

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ADMONISHMENTS USED IN THIS DOCUMENT
DANGER
! Warns of a hazard the reader will be exposed to that will likely result
in death or serious injury if not avoided. (ANSI, OSHA)
WARNING
! Warns of a potential hazard the reader may be exposed to that could
result in
death or serious injury if not avoide
d. This admonition is not used for situations that pose a
risk only to equipment, software, data, or service. (ANSI)
CAUTION
! Warns of a potential hazard the reader may be exposed to that could
result in minor or moderate injury if not avoided. (ANSI, OSHA) This admonition is not
used for situations that pose a risk only to equipment, data, or service, even if such use
appears to be permitted in some of the applicable standards. (OSHA)
ALERT
! Alerts the reader to an action that must be avoided in order to protect
equipment, software, data, or service. (ISO)
ALERT
! Alerts the reader to an action that must be performed in order to prevent
equipment damage, software corruption, data loss, o
r service interruption. (ISO)
FIRE SAFETY
! Informs the reader of fire safety information, reminders, precautions,
or policies, or of the locations of fire
-fighting and fire-safety equipment. (ISO)
SAFETY
! Informs the reader of general safety information, reminders, precautions, or
policies not related to a particular source of hazard or to fire safety. (ISO, ANSI, OSHA)

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IMPORTANT SAFETY INSTRUCTIONS
General Safety
DANGER! YOU MUST FOLLOW APPROVED SAFETY PROCEDURES.
Performing the following procedures may expose you to hazards. These procedures should be
performed by qualified technicians familiar with the hazards associated with this type of equipment.
These hazards may include shock, energy, and/or burns. To avoid these hazards:
a) The tasks should be performed in the order indicated.
b) Remove watches, rings, and other metal objects.
c) Prior to contacting any uninsulated surface or termination, use a voltmeter to verify that no voltage
or the expected voltage is present. Check for voltage with both AC and DC voltmeters prior to
making contact.
d) Wear eye protection.
e) Use certified and well maintained insulated tools. Use double insulated tools appropriately rated for
the work to be performed.
Handling Equipment Containing Static Sensitive Components
ALERT! Installation or removal of equipment containing static sensitive components requires careful
handling. Before handling any equipment containing static sensitive components, read and follow the
instructions contained on the Static Warning Page.

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STATIC WARNING
This equipment contains static sensitive components. The warnings listed below must be observed to
prevent damage to these components. Disregarding any of these warnings may result in personal injury
or damage to the equipment.
1. Strictly adhere to the procedures provided in this document.
2. Before touching any equipment containing static sensitive components, discharge all static
electricity from yourself by wearing a wrist strap grounded through a one megohm resistor. Some
wrist straps have a built-in one megohm resistor; no external resistor is necessary. Read and follow
wrist strap manufacturer’s instructions outlining use of a specific wrist strap.
3. Do not touch traces or components on equipment containing static sensitive components. Handle
equipment containing static sensitive components only by the edges that do not have connector
pads.
4. After removing equipment containing static sensitive components, place the equipment only on
static dissipative surfaces such as conductive foam or ESD bag. Do not use ordinary Styrofoam™or
ordinary plastic.
5. Store and ship equipment containing static sensitive components only in static shielding containers.
6. If necessary to repair equipment containing static sensitive components, wear an appropriately
grounded wrist strap, work on a conductive surface, use a grounded soldering iron, and use
grounded test equipment.

Vertiv |NetSure™ Mini Control Unit User Manual (UM1M831ANA)|Rev. B
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INTRODUCTION
Preface
These instructions describe the complete functionality of the NetSure™ Mini Control Unit (also referred to as
the controller in this document). Some functionality is dependent on hardware connected to the Mini Control
Unit. Your system may not utilize all the functionality described.
Refer also to the Mini Control Unit Configuration Drawing (C-drawing) furnished with your system for a list of
factory default settings.
Overview
The Mini Control Unit performs the following functions:
•Rectifier Control, including an Energy Optimization Mode
•System Components Monitoring and System Alarms Generation (including recording alarms in logs)
•Operating Data Acquisition and Data Logs
•Battery Management
•Energy Management via Energy Optimization Mode
•Power Split Feature
•Diesel Management Feature
•Supervisory Module (SM Modules) Monitoring
•Maximum Current Limit Function
•Communications Function
•FIAMM SoNick (Sodium Nickel) Battery Interface
The Mini Control Unit controls the system automatically via configured parameters.
A User can interface with the Mini Control Unit locally using the local keypad and display or locally/remotely
using the Web Interface.
The Mini Control Unit can also be accessed via SNMP (v2 and v3) or TL1 (over Ethernet). A machine-to-
machine HTTP interface is also available.
Figure 1illustrates the various applications that can be used to interface with the Mini Control Unit.

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Figure 1: Interfacing with the Mini Control Unit
MODEM
Internet Explorer,
Chrome,
Safari,
or Firefox
Net
Management
System
HLMS:
ENEC or
Site Web
HTTP
or HTTPS TCP
TL1
Machine-to-Machine
HTTP Interface
SNMP V2/V3
Site
Transmission
Network
RS232
MODEM
MODEM
Ethernet
MODEM
Mod Bus
RS485 (2)
DC Power System
PSTN, GSM
TCP/IP
TL1
HTTP
Interface
CAN (1)
Rect 1 Rect 30Rect 2
Supervisory Modules
RS485 (1)
Mini Control Unit
SM-Temp
…

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Function Descriptions
Rectifier Control
The controller controls rectifiers automatically.
System Components Monitoring and System Alarms Generation
The controller monitors the components comprising the system (such as the rectifiers, supervisory modules,
etc.) and generates alarms if a fault condition occurs. The controller also maintains an alarm history log.
The available system alarms are programmed with an Alarm Severity Level. Each Alarm Severity Level has
different visual/audible alarm attributes. Available Alarm Severity Levels and their attributes are listed in Table
1.
The available system alarms can also be mapped to controller alarm relays that can be wired to external alarm
circuits.
Table 1: Alarm Severity Levels
Alarm
Severity Levels
Red
LED
Yellow
LED
Audible
Alarm Buzzer
Critical Alarm (CR)
ON
--
ON
Major Alarm (MJ) ON -- ON
Minor Alarm (MN)
OFF
ON
OFF
No Alarm (NA) OFF OFF OFF
•Alarm Status Setting: Indicates if the alarm is active or not active, and the
severity level if active. The available alarm status settings are as follows.
-Critical Alarm: The fault endangers the power systems continued
function.
-Major Alarm: The fault reduces the power systems functionality.
-Minor Alarm: Special operating condition.
-No Alarm: The alarm is disabled and no alarm is given.
•The alarm indicator turns OFF if the fault(s) that triggered the alarm clears.
•The audible alarm can be silenced by pressing any key on the controller
local interface pad. The audible alarm is also silenced if the fault(s) that
triggered the alarm clears.
•An audible alarm cutoff feature can be programmed that silences the
audible alarm after a preset programmable time period. The audible alarm
can also be disabled.
Operating Data Acquisition and Data Logs
The controller acquires and analyses real time data from the system's components such as the rectifiers and
supervisory modules.
The controller uses this data to process alarms and also records data in logs. The logs are viewed using the
Web Interface and consists of the following. Logs can be saved in the .html (Web page) or .txt (text) format.
•Alarm History Log: Records 4000 latest alarms. The Web Interface displays the latest 500 items.

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•Battery Test Log: Up to ten (10) battery discharge tests can be recorded.
•Event Log: Records 500 latest events.
•Data History Log: Records 60000 latest history data. The Web Interface displays the latest 500 items,
and you can upload a file with up to the latest 6,000 items in a single date range. Use multiple date
ranges to upload more than 6,000 items.
•System Log: Records 3000 items in run log. The Web Interface displays the latest 500 items.
•Diesel Test Log: Records 500 latest diesel test results.
NOTE! For all logs except the Battery Test Log , once maximum number of log entries is reached, new
entries overwrite the oldest entries.
Battery Management
The controller provides the following battery management functions.
•Battery Charge Temperature Compensation
•Battery Equalize Charge
•Battery Charge Current Limit
•High and Low Battery Temperature Alarms
•Battery Thermal Runaway Management (BTRM) Feature (Reduces Voltage during a High Battery
Temperature Condition)
•Battery Discharge Test
•Battery Test Logs (maximum ten [10] tests saved)
•Battery LVD (Low Voltage Disconnect)
•Battery Capacity Prediction
•Thermal Runway Detection and Management
NOTE! Battery management functions are not available for controller configurations that enable
controller capability to receive status information sent from FIAMM SoNick (Sodium Nickel) batteries.
Battery Charge Temperature Compensation
The controller can be programmed to automatically increase or decrease system output voltage to maintain
battery float current as battery temperature decreases or increases, respectively. Battery life can be extended
when an optimum charge voltage to the battery with respect to temperature is maintained. Temperature is
monitored by a sensor mounted on the battery. See your power system documentation for temperature sensor
information. You can also set high and low compensation temperature alarms.
Functional Description (See Figure 2)
Battery charge temperature compensation adds a correction term, related to the temperature of the batteries,
to the nominal value of the system voltage. The degree of regulation (TempComp Coeff), expressed in
mV/°C/battery string, can be set per battery manufacturer recommendations.

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To protect batteries and voltage-sensitive loads, compensation is automatically limited to a maximum of two
volts (48V systems) or one volt (24 volt systems) above or below the nominal output level (float setting).
Temperature compensation can be set to clamp lower than this by enabling the Temperature Compensation
Clamp feature. When enabled, temperature compensation will clamp if the battery temperature reaches either
the Temp Comp Max Voltage setting or the Temp Comp Min Voltage setting.
Temperature compensation is automatically disabled if communication between the controller and all rectifiers
is lost, a DC over or under voltage alarm activates, a low voltage disconnection occurs, manual mode is entered,
or the system enters the equalize or test modes.
Refer to “Specifications” on page 227 for temperature probe and reading accuracy.
Figure 2: Temperature Compensated Voltage Control
Battery Equalize Charge and Battery Charge Current Limit
The controller can increase system output voltage for equalizing the charge on all battery cells of a
conventional flooded cell battery, or for recharging the battery following a commercial power failure.
The charging function can be initiated cyclically (scheduled), automatically, or manually.
Refer to the battery manufacturer's instructions for equalize charging instructions.
Functional Description (See Figure 3)
•Start of Charging: When the battery charge current exceeds a preset value for three (3) minutes or if
the calculated battery capacity has decreased to a preset value (after a commercial AC failure, for
example), the charging function of the controller is activated. A charging signal is sent from the
controller to the rectifiers to increase the voltage up to the battery charging level Vequalize.
•Battery Current Limitation: After a commercial AC failure or when some battery cells are permanently
damaged, the current to the batteries can be quite extensive. To avoid overheating or further damages
to the battery, the controller limits the battery current to a preset level by limiting the charging voltage
of the rectifiers. Should the battery current still exceed a higher preset value, an alarm is issued. Battery
charge current is limited to the value set in the controller, as long as battery voltage is above 47 VDC.
TempComp Coeff
setting (mV/°C).
V
nom
T
nom
T
V
nom
V
high
V
low
Upper voltage level where temperature compensation
clamps the voltage. Limited to the TEMP COMP MAX V
setting.
Nominal voltage (voltage at nominal temperature).
Lower voltage level where temperature compensation
clamps the voltage. Limited to the TEMP COMP MIN V
setting.
Nominal temperature (no temperature compensation is done at this temperature).
This is the Temp Comp setting.
1V Max (24V System)
2V Max (48V System)
1V Max (24V System)
2V Max (48V System)

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•End of Charging: When the charging current drops below a preset value, a defined prolonged charging
time is started before the charging is stopped and the voltage of the rectifiers return to the float
charging level (Vnom). For safety, there is an equalized charging limit time that stops the charging after a
preset time.
Figure 3: Voltage Characteristics on Commercial AC Failure and Automatic Equalize Charging
High and Low Battery Temperature Alarms
The controller can monitor battery temperature via a temperature sensor mounted on a battery cell. Values for
high battery temperature and low battery temperature alarms can then be programmed into the controller.
Battery Thermal Runaway Management (BTRM) Feature
The Battery Thermal Runaway Management (BTRM) feature reduces voltage during a high battery
temperature condition.
You can designate a temperature sensor as the BTRM sensor. The BTRM sensor has High 2 and High 1 BTRM
temperature alarm limits. If battery temperature exceeds the “BTRM Temp High 2” setting, system voltage is
lowered to the BTRM voltage setting. This feature can also be disabled.
Battery Discharge Test and Battery Test Logs
The controller can perform battery discharge tests to check the condition of the battery(s). There are three (3)
types of battery discharge tests:
•Battery Test without Constant Current
•Battery Test with Constant Current
•Short Time Test (requires two battery shunts)
A User can manually start a battery discharge test or program the controller to automatically start battery
discharge tests at scheduled intervals. Twelve (12) Constant Current Tests can be scheduled by the month-
day-hour. A Short Time Test can be scheduled to be performed every 1-365 days. During a battery discharge
test, the controller controls the rectifiers output to place the entire load or partial load on the batteries. The
controller monitors the discharge of the battery and saves the results in a battery test log. The controller stores
ten (10) battery discharge tests.
Functional Description
For manual battery discharge tests as well as for scheduled battery discharge tests, the following parameters
must be set: End Test Voltage, End Test Time, and End Test Capacity. See Figure 4.

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Figure 4: Battery Test Diagram
Battery Discharge Test Sequence
•For a Constant Current Test, the output voltage of the rectifiers is reduced so that the batteries supply
the preset Constant Current Test Current to the load.
•If Constant Current is disabled, then the current being delivered by the batteries will be dependent on
the load.
•For a Short Time Test, the output voltage of the rectifiers is reduced so that only the batteries power the
load. If the batteries fail, the rectifiers power the load.
•The battery test continues until one of the following occurs:
-The preset End Test Time, see Figure 4, expires. The battery has passed the test.
-The battery capacity drops below the preset End Test Capacity. The battery has passed the test.
-The battery voltage drops below the preset End Test Voltage (Vend) (see Figure 4). The battery
has not passed the test and the test is interrupted. A bad battery alarm is activated.
-If a critical alarm occurs during the test or there’s not enough load, the battery test is aborted. In
such cases a “Battery Test Fail” alarm will be activated (indicating the test couldn’t be done). This
alarm is different from the “Bad Battery” alarm (meaning the test was completed but the battery
didn’t pass it).
•A battery test alarm is active during a battery discharge test.
•If the battery has not passed the test, a bad battery alarm is activated.
•After the battery discharge test, the output voltage of the rectifiers increases so that the rectifiers
supply the system and charge the batteries.
NOTE! A procedure for performing a manual battery discharge test is provided on page 47.
Battery LVD (Low Voltage Disconnect)
To prevent serious damage to the batteries during a commercial AC power failure, the batteries can be
disconnected by voltage or time control.
The batteries are reconnected automatically when commercial AC power is restored and a predetermined DC
voltage level is reached.
See “LVD Tab Programmable Parameter Descriptions” on page 130 for descriptions of programmable LVD
parameters.
Time (hours)
Vnom
Vend
Test OK
Test not OK
Test Time

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Battery Capacity Prediction
The controller can predict battery capacity. When a battery is connected to the system at initial setup or
increasing the number of batteries, you need to update the Battery Ah rating. After doing this and making sure
the battery is fully charged you need to reset the battery capacity used percentage by performing the “Reset
Battery Capacity” command to tell the controller that the batteries are 100% charged. From this point forward
the controller will keep track of the battery current and time to predict the battery capacity used.
Thermal Runaway Detection and Management
Functional Description
The system uses several control mechanisms to avoid thermal runaway.
•During a short high rate discharge, the batteries will normally get hot. The controller takes this into
consideration. After completion of the discharge duty, the batteries are recharged with a limited current
to avoid heating the batteries any further.
•The temperature of the batteries can be monitored, and the controller sets the charge voltage
appropriately, as previously described under “Battery Charge Temperature Compensation” on page 12.
•In addition to battery temperature compensation, if battery temperature rises above a set temperature
limit, the system stops battery charging completely by lowering the output voltage to the “BTRM
Voltage” setting. This allows the batteries to cool down. The system also provides alarm notification of
this occurrence. Power supplied to customer equipment is not interrupted. See “Setting Battery
Thermal Runaway Management (BTRM) Feature” on page 44 for programming.
•The battery LVD circuits can be programmed to open (disconnect) if a high temperature event occurs
(HTD-High Temperature Disconnect). The contactor(s) open when battery temperature rises above a
programmable value and close again when battery temperature falls below another programmable value.
See “LVD Tab Programmable Parameter Descriptions” on page 130 for programming.
Energy Management
Energy Management consists of an Energy Optimization Mode.
Energy Optimization Mode
The controller provides an Energy Optimization Mode (ECO) function. Energy Optimization permits an
installation to only operate rectifiers as needed to maintain the load and keep batteries in a fully charged
condition. As load increases, Energy Optimization turns on additional rectifiers as needed to maintain the load.
As load decreases, Energy Optimization places rectifiers in standby to conserve energy usage. Rectifiers which
are always operating to maintain any load requirements are cycled through the group of rectifiers controlled by
this feature to provide uniform operating times for each rectifier.
ALERT! The Energy Optimization Mode should NOT be used in systems that operate without batteries.
The following operating conditions apply:
1. The ECO mode is only enabled upon normal system operation. If any of the following alarms occurs, the
system cannot enter or will exit the ECO mode.
a) Current imbalance (only when imbalance current protection is enabled).
b) AC fail.

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c) Any one rectifier over temp.
d) Any one rectifier AC fail.
e) Any one rectifier fault.
f) Any one rectifier over voltage.
g) Any one rectifier fan fault.
h) Any one rectifier no response.
i) Any one battery fuse open.
j) Any one LVD disconnect.
k) Battery is in charge or discharge, as defined below:
-Battery current > [battery rated capacity × 0.005], or battery current > 5A means battery in
charge.
-Battery current < [battery rated capacity × -0.003], or battery current < -2A means battery in
discharge.
l) Under voltage.
m) Any one rectifier in current limit mode.
2. The system load cannot exceed the system energy saving point (default value is 45%). Otherwise the
system cannot enter or will exit the ECO mode.
3. When the rectifier load exceeds its optimal operating point, the system will exit the ECO mode and the
controller will recalculate and then turn off any unnecessary rectifiers. After that, the system can enter
the ECO mode again.
4. If the system enters the ECO mode and then exits for five consecutive times within one hour, an
abnormal alarm (ECO Cycle Alarm) will be generated and the system can no longer enter the ECO mode
until the ECO Cycle Alarm is cleared manually or retires automatically after 24 hours.
Power Split Feature
The power split feature allows you to connect the power system controlled via the controller to an existing DC
power system instead of extending or completely replacing the existing DC power system.
The power system controlled via the controller functions as “System A” to share load (split output) with the
existing system (“System B”) that requires expansion. The controller does not require communication with the
“System B’s” controller.
The power split feature provides for the sharing of total load in a controlled manner between the paralleled
power systems.
When power split is programmed, the controller adjusts rectifier output voltage per load demands to ensure
proper sharing between “System A” and “System B”. See Figure 5.

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Figure 5: Power Split Feature
Diesel Management Feature
The diesel management feature is available when an SM-AC supervisory module is connected to the controller.
The diesel management feature consists of a diesel test. The diesel test can be performed at specific intervals
or a User can manually start the diesel test. The controller records the test results.
Supervisory Module (SM Modules) Monitoring
Various devices (supervisory modules) can be connected to the controller to extend its monitoring capabilities.
Maximum Current Limit Function
The current available from the rectifiers can be limited (in amps) from 10% to 121% of combined rectifier
capacity. The factory setting is 121% unless otherwise specified. Refer to the controller Configuration Drawing
(C–drawing) supplied with your system documentation for your system’s settings.
See also “Checking the Controller’s Current Limit Point after Adding or Removing a Rectifier” on page 41.
Communications Function
The controller is able to communicate with different equipment or connect to different equipment for
communication. See Figure 6.
a) 10M/100M Ethernet Port: The controller can communicate with a supervisory computer or other
devices through its 10M/100M Ethernet port. The communication cable shall be a shielded cable. The
Ethernet port is located on the front panel of the controller. This port supports Dynamic Host
Configuration Protocol (DHCP) function.

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NOTE! Some systems may have an IB4 board with a second Ethernet port. The IB4 board is connected
to the controller’s backplane connector (USB) via a factory provided cable. Refer to your system’s
documentation for location of the IB4 board (if furnished).
b) Controller Digital Inputs:The controller provides (via system interconnect connectors, refer to your
system documentation for location) connections for two (2) programmable binary digital inputs (located
on the controller). See also “Controller Digital Input and Relay Output Connections” on page 226.
c) Controller Relay Outputs:The controller provides (via system interconnect connectors, refer to your
system documentation for location) connections for four (4) programmable form-C relay outputs
(located on the controller). The relay outputs can be connected to customer external alarm circuits.
Each relay output can be configured to change state when one or more alarm events occur. The relay
outputs can also be connected to customer external equipment, so that the relay output can control or
interface with the customer external equipment. See also “Controller Digital Input and Relay Output
Connections” on page 226.
d) IB4 (Interface Board 4): Some systems may have an IB4 board. The IB4 board is a USB to LAN
converter for the controller, which includes a USB and an Ethernet port. The IB4 board is connected to
the controller’s backplane connector (USB) via a factory provided cable. Refer to your system’s
documentation for location of the IB4 board (if furnished).
e) RS-485 Port: The controller can communicate with an SM-AC, SM-Bat, or SMIO through the RS-485
port. The RS-485 port uses the parameters 19200, n, 8, 1.
f) Modbus Protocol: The controller can communicate using the Modbus protocol.
g) TL1: See “TL1 Interface” starting on page 59.
h) Machine-to-Machine HTTP Interface: See “Machine-to-Machine HTTP Interface” starting on page 60.
Figure 6: The Controller Perspective
FIAMM SoNick (Sodium Nickel) Battery Interface
If a special configuration file is furnished, the controller has capability to receive status information sent from
FIAMM SoNick (Sodium Nickel) batteries. See “FIAMM SoNick (Sodium Nickel) Batteries Interface” starting on
page 56.

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OPERATION
Controller Initialization
The controller goes through an initialization process when power is initially applied to the system.
NOTE! The initialization routine takes several minutes. During that time various alarm indicators may
illuminate on the controller’s front panel and an audible alarm may sound. Disregard all alarms. An
audible alarm can be silenced at any time by momentarily depressing the ENT key on the controller.
Initialization
1. After the controller is powered on, it goes through an initialization routine.See Figure 7.
2. When initialization is complete, the language screen appears. Press the UP or DOWN arrow key to
select the desired language. Press the ENT key to confirm the selection. See Figure 7.
Figure 7: Controller Start-Up
MiniController
Start-Up Routine
MiniController
V6.2.01...
54.3V 0.0A
Auto Alarm
English
To Change the Language for the LCD Menus:
Press the UP and DOWN arrow keys to highlight the desired
language the menus use.
Press the ENT key to confirm the selected language.
If no key is pressed within 5 minutes, the controller selects the
default language automatically and then displays the Main
Screen.
Main Screen