Vertiv NetSure 531 AC1 User manual

NetSure 531 AC1 Power Supply System
User Manual
Version
V1.2
Revision date
December 30, 2017
BOM
31013070
Vertiv Tech provides customers with technical support. Users may contact the nearest
Vertiv local sales office or service center.
Copyright © 2017 by Vertiv Tech Co., Ltd.
All rights reserved. The contents in this document are subject to change without notice.
Vertiv Tech Co., Ltd.
Address: Block B2, Nanshan I Park, No.1001 Xueyuan Road, Nanshan District, Shenzhen,
518055, P.R.China
Homepage: www.vertivco.com
E-mail: [e-mail]

Safety Precautions
To reduce the chance of accident, please read the safety precautions very carefully before operation. The
"Caution, Note, Warning, Danger" in this book and on the product do not represent all the safety points to be
observed, and are only supplement to various safety points. Therefore, the installation and operation personnel
must receive strict training and master the correct operations and all the safety points before operation.
When operating Vertiv products, the operation personnel must observe the safety rules in the industry, the
general safety points and special safety instructions specified in this book.
Electrical Safety
I. Hazardous voltage
Danger
Danger
Some components of the power supply system carry hazardous voltage in operation. Direct contact or indirect contact
through moist objects with these components will result in fatal injury.
Observe safety rules in the industry when installing the power supply system. The installation personnel must be
licensed to operate high voltage and AC power.
In operation, the installation personnel are not allowed to wear conductive objects, such as watches, bracelets,
bangles and rings.
When you spot the cabinet with water or moisture, turn off the power immediately. In moist environment,
precautions must be taken to keep moisture out of the power supply system.
"Prohibit" warning label must be attached to the switches and buttons that are not permitted to operate during
installation.
Danger
Danger
High voltage operation may cause fire and electric shock. The connection and wiring ofAC cables must be in compliance
with the local rules and regulations. Only those who are licensed to operate high voltage and AC power can perform high
voltage operations.
II. Tools
Warning
In high voltage and AC operation, specialized tools must be used.
III. Thunderstorm
Danger
Danger
Never operate on high voltage,AC, iron tower or mast in the thunderstorm.
In thunderstorms, a strong electromagnetic field will be generated in the air. Therefore the equipment should be
well earthed in time to avoid damage by lightning strikes.

IV. ESD
Note
The static electricity generated by the human body will damage the static sensitive elements on PCBs, such as large-scale
ICs. Before touching any plug-in board, PCB or IC chip, you should wear the ESD wrist strap to prevent body static from
damaging the sensitive components. The other end of the ESD wrist strap must be well earthed.
V. Short circuit
Danger
Danger
During operation, never short the positive and negative poles of the DC distribution unit of the power supply system or the
non-grounding pole and the earth. The power supply system is a constant-voltage DC power device, short circuit will result
in equipment burning and endanger human safety.
Check the polarity of the cable and connection terminal when performing DC live operations.
As the operation space in the DC distribution unit is very tight, please carefully select the operation space.
Never wear a watch, bracelet, bangle, ring, or other conductive objects during operation.
Use insulated tools.
In live operation, keep the arm, wrist and hand tense, so that when the tool in operation slips, the movement of
the human body and tool is reduced to a minimum.
Battery
Danger
Danger
Before any operation on battery, read carefully the safety precautions for battery transportation and the correct battery
connection method.
Note
If the power supply system does not connect with AC power for a long time, to prevent battery overdischarge, users should
cut batteries off from the power supply system thoroughly, for example, pulling out battery fuses or switching off battery
MCBs. Before putting the power supply system into operation, insert all the battery fuses or switch on all the battery MCBs.
Non-standard operation on the battery will cause danger. In operation, precautions should be taken to prevent
battery short circuit and overflow of electrolyte. The overflow of electrolyte will erode the metal objects and PCBs,
thus causing equipment damage and short circuit of PCBs.
Before any operation on battery, pay attention to the following points:
1. Remove the watch, bracelet, bangle, ring, and other metal objects on the wrist.
2. Use specialized insulated tools.
3. Use eye protection device, and take preventive measures.
4. Wear rubber gloves and apron to guard against electrolyte overflow.
5. In battery transportation, the electrode of the battery should always be kept facing upward. Never put the
battery upside down or slanted.

BLVD
The power supply system has load low voltage disconnection (LLVD) function and battery low voltage
disconnection (BLVD) function.
LLVD means when the mains fails and batteries supply power, the power supply system cuts the non-priority
load off when the battery voltage drops down to 44V. In this way, the battery remaining capacity can sustain the
priority load longer. The LLVD voltage is settable, refer to 4.7.2 Battery Settings for setting method.
BLVD means that when the battery voltage drops down to 43.2V, the power supply system will cut off the battery
automatically to avoid shortening the battery life owing to the over-discharge of the battery. The BLVD voltage is
settable, refer to LVD parameters in 4.7.2 Battery Setting for setting method.
BLVD and LLVD function is enabled before delivery, which means that if power outage lasts for a long time or
the power supply system fails, there might be LLVD and BLVD. Users should connect the non-priority loads to
LLVD routes, and connect the priority loads to BLVD routes according to the importance of the loads. For vital
loads, users can disable BLVD to ensure reliability of the power supply.
The method of disabling BLVD is:
1. Hardware disabling BLVD: unplug the signal cable from J427 terminal of controller, and tag the BLVD-disabled
label. Refer to 2.4.2 Connecting Signal Cables for the controller position and interface description.
2. Software disabling BLVD: set ‘BLVD Enable’parameter through the controller to ‘N’. Refer to LVD Parameter
in 4.7.2 Battery Setting for the setting method.
Note
The advantage of enabling BLVD is protecting the batteries from over-discharge when the battery voltage is too low. The
disadvantage of enabling BLVD is that when the battery voltage drops down to a certain value, all the loads (including
non-priority loads and priority loads) will be cut off due to battery disconnection.
The advantage of software disabling BLVD is prolonging the power supply of priority loads. The disadvantage is that
software disabling cannot prevent unwanted power failure due to misoperation or power system failure.
The advantage of hardware disabling BLVD is preventing unwanted power failure due to misoperation or power system
failure, and ensuring the continuity of vital loads’power supply.
Others
I. Safety
Note
When replacing the power input fuse of the controller and the power distribution unit, you must use the fuse with same
type.
II. Sharp object
Warning
When moving equipment by hand, wear protective gloves to avoid injury by sharp object.

III. Power cable
Note
Please verify the cable labels before connection.
IV. Signal cables
Note
The signal cables should be routed at least 150mm away from power cables.

Contents
Chapter 1 Overview ............................................................................................................................................................1
1.1 Model Description.................................................................................................................................................1
1.2 Composition & Configuration ................................................................................................................................1
1.3 Options .................................................................................................................................................................2
1.4 Features................................................................................................................................................................3
Chapter 2 Installation Instruction.........................................................................................................................................4
2.1 Safety Regulations................................................................................................................................................4
2.2 Preparation...........................................................................................................................................................4
2.3 Mechanical Installation..........................................................................................................................................5
2.3.1 Fixing The Power Supply Cabinet .............................................................................................................5
2.3.2 Installing Rectifiers ....................................................................................................................................8
2.4 Electrical Installation.............................................................................................................................................8
2.4.1 Connecting Power Cables.........................................................................................................................8
2.4.2 Connecting Signal Cables .......................................................................................................................11
Chapter 3 Testing..............................................................................................................................................................13
3.1 Installation Check And Startup............................................................................................................................13
3.2 Basic Settings.....................................................................................................................................................14
3.3 Alarm Check And System Operation Status Check............................................................................................14
3.4 Final Steps..........................................................................................................................................................15
Chapter 4 Use Of The Controller.......................................................................................................................................16
4.1 Front Panel.........................................................................................................................................................16
4.2 Main LCD Pages.................................................................................................................................................16
4.2.1 System Information Page ........................................................................................................................16
4.2.2 Enter Password Page..............................................................................................................................17
4.2.3 MAINMENU Page....................................................................................................................................17
4.2.4 STATUS Page.........................................................................................................................................18
4.2.5 Settings Page..........................................................................................................................................18
4.2.6 Maintenance Page...................................................................................................................................18
4.2.7 Energy Saving Page................................................................................................................................19
4.2.8 Fast Settings Page ..................................................................................................................................19
4.3 Querying System Main Information.....................................................................................................................19
4.4 Querying Rectifier Status....................................................................................................................................21
4.5 Querying Alarms.................................................................................................................................................21
4.5.1 Querying Active Alarm.............................................................................................................................21
4.5.2 Querying History Alarm............................................................................................................................23
4.6 Maintenance .......................................................................................................................................................23
4.7 Setting.................................................................................................................................................................24
4.7.1 Alarm Settings.........................................................................................................................................24

4.7.2 Battery Settings .......................................................................................................................................27
4.7.3 AC Settings..............................................................................................................................................31
4.7.4 DC Settings .............................................................................................................................................32
4.7.5 Rectifier Settings .....................................................................................................................................32
4.7.6 System Settings.......................................................................................................................................33
4.7.7 Communication Settings..........................................................................................................................34
4.8 Setting Energy Saving ........................................................................................................................................34
4.9 Fast Settings.......................................................................................................................................................35
Chapter 5 Rectifier............................................................................................................................................................36
5.1 Model Description...............................................................................................................................................36
5.2 Structure Description ..........................................................................................................................................36
5.3 Functions & Features..........................................................................................................................................37
5.4 Fault Protection...................................................................................................................................................37
5.5 Technical Parameters.........................................................................................................................................39
Chapter 6 Alarm Handling.................................................................................................................................................41
6.1 Handling Alarms..................................................................................................................................................41
6.2 Handling Rectifier Fault.......................................................................................................................................42
6.3 Handling Controller Fault....................................................................................................................................44
Appendix 1 Technical Parameter ......................................................................................................................................46
Appendix 2 Engineering Diagram......................................................................................................................................48
Appendix 3 Parameter Setting Of The Controller..............................................................................................................49
Appendix 4 Menu Structure Of The Controller ..................................................................................................................53
Appendix 5 Schematic Diagram........................................................................................................................................55
Appendix 6 Wiring Diagram...............................................................................................................................................56
Appendix 7 Glossary.........................................................................................................................................................59

Chapter 1 Overview 1
NetSure 531 AC1 Power Supply System User Manual
Chapter 1 Overview
This chapter introduces model description, composition & configuration, and features of NetSure 501 AC1 power
supply system (abbreviated as ‘power supply system’hereinafter).
1.1 Model Description
Taking NetSure 501 AC1-Y1 as an example, the model description of the power supply system is given in Figure 1-1.
NetSure 5 3 1 A C 1 –Y 1
Cabinet configuration No.
Cabinet type; Height: 2m
System version
Max. number of the rectifier in one cabinet: 12
Region: Asia-pacific
System platform version
Rectifier platform version
Rectifier output power: 1000W ~ 2000W
Power supply system brand
Figure 1-1 Model description
1.2 Composition & Configuration
NetSure 531 AC1 power supply system includes three models: NetSure 531 AC1-Y1, NetSure 531 AC1-Y6 and
NetSure 531 AC1-W6. Select a appropriate configuration according to your requirement. NetSure 531 AC1-Y1 and
NetSure 531 AC1-Y6 power supply systems are integrated, fixed-configuration cabinets with battery compartments;
NetSure 531 AC1-W6 power supply system is a fixed-configuration cabinet without battery compartment.
The appearances of the NetSure 531 AC1 power supply system are shown in Figure 1-2, Figure 1-3 and Figure 1-4.
PCB board of the
controller
Rectifier
AC input MCB
DC positive busbar
Battery MCB
BLVD MCB
Battery compartment
LLVD MCB
Figure 1-2 Appearance of NetSure 531 AC1-Y1 power supply system

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NetSure 531 AC1 Power Supply System User Manual
PCB board of the
controller
Rectifier
AC input MCB
DC positive busbar
BLVD MCB
Battery MCB
Battery compartment
LLVD MCB
Figure 1-3 Appearance of NetSure 531 AC1-Y6 power supply system
PCB board of the
controller
Rectifier
AC input MCB
DC positive busbar
BLVD MCB
Battery MCB
LLVD MCB
Figure 1-4 Appearance of NetSure 531 AC1-W6 power supply system
The configuration of the NetSure 531 AC1 power supply system is listed in Table 1-1.
Table 1-1 Configuration of the NetSure 531 AC1 power supply system
Item
Description
NetSure 531 AC1-Y4
NetSure 531 AC1-Y5
Rectifier
Model: R48-2000e3/R48-2000A3
Optional configuration: 2 pieces ~ 12 pieces
Standard configuration: 12 pieces
Model: R48-2000e3/R48-2000A3
Optional configuration: 2 pieces ~ 6 pieces
Standard configuration: 6 pieces
Controller
Model: M520S
Standard configuration: 1 piece
Model: M520S
Standard configuration: 1 piece
AC power distribution
AC input mode: 3P + N + PE/ 380V + SPD
AC input mode: 3P + N + PE/ 380V + SPD
DC power distribution
10 BLVD routes: 2 ×16A/1P, 8 ×10A/1P MCB
6 LLVD routes:
2 ×125A/1P, 2 ×80A/1P, 2 ×63A/1P MCB
4 BLVD routes: 2 ×16A/1P, 2 ×32A/1P MCB
3 LLVD routes: 3 ×100A/1P MCB
Battery routes
Battery MCBs: 4 ×100A/1P
Max. battery configuration:
4 ×4 ×(12V/165Ah) or 4 ×4 ×(12V/100Ah)
Battery MCBs: 4 ×100A/1P
Max. battery configuration:
4 ×4 ×(12V/165Ah) or 4 ×4 ×(12V/100Ah)
Optional parts
Two temperature sensors
Two temperature sensors
1.3 Options
The integrated power supply system that has battery compartments is defined as M+ cabinet. The power supply
system that has no battery compartments is defined as S cabinet.

Chapter 1 Overview 3
NetSure 531 AC1 Power Supply System User Manual
S cabinet may choose a battery cabinet as an option. The models and descriptions of the battery cabinet are listed in
Table 1-2.
Table 1-2 Models and descriptions of the battery cabinet
Model
Layer
Battery capacity
Battery number
PS08-165C2Z
2
165Ah
8
PS12-165C3Z
3
165Ah
12
PS16-165C4Z
4
165Ah
16
PS20-100C5Z
5
100Ah
20
1.4 Features
The rectifier uses the active Power Factor Compensation (PFC) technology, raising the power factor to 0.99
The power supply system has wide AC input voltage range: 85Vac ~ 290Vac
The rectifier uses soft switching technology, raising the efficiency to 94%
The rectifier has ultra-low radiation. With advanced EMC design, the rectifier meets international standards such
as CE and NEBS. Both the conducted and radiated interference reach Class A
The rectifier safety design complies with CE standards, the R48-2000e3 rectifier also complies with UL and
NEBS standards
The rectifier is of High power density
The rectifier is hot pluggable. It takes less than 1min to replace a rectifier
The rectifier has two optional over-voltage protection methods: hardware protection and software protection. The
latter one also has two optional modes: lock-out at the first over-voltage and lock-out at the second
over-voltage
The controller has perfect battery management function. The management functions include BLVD, temperature
compensation, auto voltage regulation, stepless current limiting, battery capacity calculation and on-line
battery test, etc
The controller can save up to 200 pieces of historical alarm records, and 10 sets of battery test data records
The controller is of network design. Providing multiple communication ports (such as RS232, modem and dry
contacts), which enables flexible networking, remote monitoring and unmanning
The power supply system has perfect lightning protection at both AC side and DC side
The power supply system has complete fault protection and fault alarm functions

4 Chapter 2 Installation Instruction
NetSure 531 AC1 Power Supply System User Manual
Chapter 2 Installation Instruction
This chapter introduces installation and cable connection. Before installation, please read through safety regulations,
and then follow this instruction to carry out the installation step by step.
2.1 Safety Regulations
Certain components in this power system carry hazardous voltage and current. Always follow the instructions below:
1. Only the adequately trained personnel with satisfactory knowledge of the power system can carry out the
installation. The most recent revision of these safety rules and local safety rules in force shall be adhered to during
the installation.
2. All external circuits that are below 48V and connected to the power system must comply with the requirements of
SELV as defined in IEC 60950.
3. Make sure that the power (mains and battery) to the system is cut off before any operations can be carried out
within the system cabinet.
4. The power cabinets shall be kept locked and placed in a locked room. The key keeper should be the one
responsible for the power system.
5. The wiring of the power distribution cables should be arranged carefully so that the cables are kept away from the
maintenance personnel.
2.2 Preparation
Unpacking inspection
The equipment should be unpacked and inspected after it arrives at the installation site. The inspection shall be done
by representatives of both the user and Vertiv Tech Co., Ltd.
To inspect the equipment, you should open the packing case, take out the packing list and check against the packing
list that the equipment is correct and complete. Make sure that the equipment is delivered intact.
Cables
The cable should be selected in accordance with relevant industry standards.
It is recommended to use the RVVZ cables as AC cables. The cable should reach at least +70°C temperature
durability. Select the AC cable CSA according to Table 2-1.
Table 2-1 AC cable CSA selection
Connector
Specifications
AC cable CSA
AC input MCB
1 ×63A/4P, four H-tube cable terminals
10mm2~ 35mm2
AC input MCB
1 ×32A/4P, four H-tube cable terminals
6mm2~ 16mm2
AC input MCB
1 ×100A/4P or 1 ×100A/2P, one or two H-tube cable terminals
16mm2~ 35mm2
AC output terminals
UK35/2P, two H-tube cable terminals
25mm2~ 35mm2
Note:
With cable length shorter than 30m, the CSA calculation should be based on the current density of 2.5A/mm2. The suggested
CSA value is not smaller than 15mm2
The CSA of DC cable depends on the current flowing through the cable, the allowable voltage drop and load peak
current. The recommended load peak current is 1/2 to 2/3 of MCB or fuse capacity.

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NetSure 531 AC1 Power Supply System User Manual
Select the battery cable CSA according to Table 2-2. Select the load cable CSAaccording to Table 2-3.
Table 2-2 Battery cable CSA selection
Battery MCB rated current
Max. battery current
Min. cable CSA
Max. cable length (allowable voltage drop: 0.5V)
100A
100A
25mm2
7m
125A
125A
25mm2
6m
Note:
1. The specs are applicable at ambient temperature of 25°C. If the temperature is too high, the CSA of the cable should be
increased.
2. The battery cable should reach at least 90°C heat durability. It is recommended to use double-insulated copper-core
flame-retardant cable as battery cable
Table 2-3 Load cable CSA selection
Load route rated
current
Max. output
current
Min. cable
CSA
Max. cable length (volt drop:
0.5V, with min. CSA)
Max. cable
CSA
Max. cable length (volt drop:
0.5V, with max. CSA)
125A
63A
25mm2
11m
50mm2
22m
100A
50A
25mm2
14m
50mm2
28m
80A
40A
25mm2
17m
50mm2
34m
63A
32A
16mm2
14m
25mm2
22m
32A
16A
16mm2
28m
25mm2
44m
16A
10A
6mm2
16m
16mm2
42m
10A
5A
6mm2
32m
16mm2
84m
Note:
The specs are applicable at ambient temperature of 25°C. If the temperature is too high, the CSA of the cable should be
increased
The CSA of the system earth cable should be the same as that of the largest power distribution cable and not less
than 35mm2. The earth terminal of the earth busbar is M10 bolt.
2.3 Mechanical Installation
2.3.1 Fixing The Power Supply Cabinet
Installation to the ground
M+ cabinet should be installed to the cement ground.
1. Mark the specific installation position of the cabinet
Determine the installation position of the power cabinet in the equipment room according to Figure 2-1. The cabinet
can be installed against the wall.
600mm
600mm
≥800mm
≥800mm
Front Cabinet
Figure 2-1 Equipment room layout
Note
If the system fixed on a battery cabinet is installed against the wall, the installation sequence should be as follows:

6 Chapter 2 Installation Instruction
NetSure 531 AC1 Power Supply System User Manual
1. Connecting cables;
2. Placing the battery cabinet to the installation position, and fixing the battery cabinet;
3. Installing batteries.
2. Install expansion pipe
According to Figure 2-2, mark the installation points on the ground. Use the electric drill (aiguille: Φ14) to dig holes
(depth: 70mm) at the marked points. Clean the drilled hole of dust. Put the expansion pipe into the hole and knock it
in.
65
570
4 18
Cabinet front
600
490
453
Figure 2-2 Installation dimensions (unit: mm)
3. Fix the cabinet
Move the cabinet to the installation position. Align the installation holes on the installation parts with those dug on the
rack. Screw the bolts down.
After installation, the cabinet should stand firmly no matter how it is shaken.
Installation to the battery cabinet
S cabinet should be installed to the battery cabinet or to the wall.
The installation procedures are described as follows:
1. Use the installation assembly to fix the back side of the power supply system to the battery cabinet, as shown in
Figure 2-3.
Power supply
system
Battery cabinet
A
A amplified
Installation
assembly
Figure 2-3 Installing the power supply system to the battery cabinet (back view)
2. Use the fixing bolts to fix the power supply system to the battery cabinet, as shown in Figure 2-4.

Chapter 2 Installation Instruction 7
NetSure 531 AC1 Power Supply System User Manual
Power supply
system
Battery cabinet
A
A amplified
Fixing bolt
Figure 2-4 Installing the power supply system to the battery cabinet (front view)
Installation to the wall
The installation procedures are described as follows:
1. Mark the installation points on the wall. Use the electric drill (aiguille: Φ10) to dig holes (depth: 55mm) at the
marked points. Clean the drilled hole of dust. Put the expansion pipe into the hole and knock it in.
2. Use bolts to fix the installation assembly to the power supply system. Use plain washers, spring washers and nuts
to fix the power supply system to the wall, as shown in Figure 2-5 and Figure 2-6.
A
Installation
assembly
Bolt
Nut
A amplified
Figure 2-5 Installing the power supply system to the wall (a)
Installation
assembly
Bolt
Nut
Bolt
Figure 2-6 Installing the power supply system to the wall (b)

8 Chapter 2 Installation Instruction
NetSure 531 AC1 Power Supply System User Manual
2.3.2 Installing Rectifiers
Note
1. In the non-full-configuration, install the dummy plates from left to right at the empty slots.
2. When installing the rectifier, hold the handle and push the rectifier to the slot gently, otherwise the slot may be damaged.
The procedures of installing rectifiers are as follows:
1. Loosen the fixing screw of the handle, pull the fixing screw of the handle by hand to pull out the handle.
Handle
Fixing screw
Figure 2-7 Handle of the rectifier
2. Put the rectifier onto the position shown in Figure 2-4. Push the rectifier completely into the cabinet.
3. Push the handle into the front panel to lock the rectifier to the cabinet. Fix the fixing screw of the handle with a
cross head screwdriver. The mounted rectifiers are shown in Figure 2-8.
Figure 2-8 Mounted rectifiers
2.4 Electrical Installation
2.4.1 Connecting Power Cables
Danger
Danger
1. Switch off all MCBs before the electrical connection.
2. Only the qualified personnel shall do the power cable connection.
Connecting earth cable
Connect one end of the earth cable to the earth busbar of the machine room, and the other end to the earth terminal
of the power supply system. Feed the cables into the cabinet from the top. The position of the earth terminal is shown
in Figure 2-9.

Chapter 2 Installation Instruction 9
NetSure 531 AC1 Power Supply System User Manual
Enlarged view
Enlarged view
Figure 2-9 Earth terminal position
Connecting AC cables
Connect the AC input cables to the AC input MCB or terminals in the AC input areas, as shown in Figure 2-10.
AC input area
Figure 2-10 AC input areas
Connecting load cables
Connect the negative load cable to the upper terminal of load MCBs (LLVD MCBs and BLVD MCBs). Connect the
positive load cable to the DC positive busbar, as shown in Figure 2-11.

10 Chapter 2 Installation Instruction
NetSure 531 AC1 Power Supply System User Manual
LLVD MCB
PCB board of the
controller
BLVD MCB
Battery MCB
DC positive busbar
Figure 2-11 Connection terminals
Connecting battery cables
Note
1. The batteries may have dangerous current. Before connecting battery cables, make sure that the battery fuses at the system side
(shown in Figure 2-8) and the battery MCBs at the battery side are switched off. If there are no battery MCBs at the battery side,
users should disconnect any one of the connectors between battery cells to avoid live state of the power supply system after
installation.
2. Be careful not to reversely connect the battery. Otherwise, both the battery and the power supply system will be damaged!
3. When users install batteries, batteries in the lowest layer should be installed firstly, and batteries in the most upper layer should
be installed lastly. When users remove batteries, the batteries should be removed in a reverse order, to prevent turnover of the
cabinet.
1. Cable connection of M+ cabinet
The battery cables are connected at the factory. When connecting batteries, pull out the heat shrinkable tube
wrapped around the cable terminals and connect the battery cables to the positive and negative terminals of the
batteries.
2. Cable connection of S cabinet
The battery cables of S cabinet are accessories. The cable connection procedures are as follows:
1) Connect one end of the negative battery cable to the upper terminal of the battery MCB. According to Appendix 6
Wiring Diagram, connect one end of the positive battery cable to the positive busbar. The connection terminals are
shown in Figure 2-11.
2) Route the battery cables through top cover of the power supply system and battery cable entry holes of the battery
cabinet. Bind the cables beside the battery. Wrap all the bare parts of the cable terminals with insulating tape. Do not
connect the cables to the battery until the DC distribution unit is to be tested. The positions of the battery cable entry
holes are shown in Figure 2-12.

Chapter 2 Installation Instruction 11
NetSure 531 AC1 Power Supply System User Manual
Negative
battery cable
entry hole
Top cover
Positive
battery cable
entry hole
Figure 2-12 Battery cable entry hole
2.4.2 Connecting Signal Cables
All the signal cables are connected to the PCB board of the controller. The position of the PCB board is shown in
Figure 2-13.
PCB board of the
controller
Figure 2-13 PCB board of the controller
The interfaces are shown in Figure 2-14.
231 32
1
1 5
9
6
D1
D2
J424 J408 J411 J412 J409 J407 J416
J426
J427
J421
J420
J430J418J417
J419 J422
J402J403J404J433
J3
Figure 2-14 Interfaces of the controller
The functions of the interfaces are given in Table 2-4. Connect signal cables according to Table 2-4.

12 Chapter 2 Installation Instruction
NetSure 531 AC1 Power Supply System User Manual
Table 2-4 Descriptions of interface and cable connection
Terminal
Definition
Connection description
J402 ~ J404
Eight dry contact outputs
Connected to signal cables
J433
Four wet contact inputs
Connected to signal cables
J417
Battery temperature sensor terminal
Connected to battery temperature sensor
J418
Ambient temperature sensor terminal
Connected to ambient temperature sensor
J420
RS232 port
Connected to a modem or an upstream host
J426
LLVD normally-closed contact
The port has been connected before delivery.
Switching on this port gets the LLVD contactor controlled by the
controller. For control condition, refer to 4.7.2 Battery Settings
J427
BLVD normally-closed contact
The port has been connected before delivery.
Switching on this port gets the BLVD contactor controlled by the
controller. For control condition, refer to 4.7.2 Battery Settings
J430
Providing 12V power to modem
Connected to the power cable of the modem
Connecting temperature sensor cable
The temperature sensor is an optional accessory. The operating voltage of its probe is 5V, the measurement range is
-5°C ~ +100°C, the measurement precision is ±2°C.
The installation procedures are described as follows:
1. Connect the three-core plug of the temperature sensor cable to the J417 or J418 terminal of the controller.
2. Put the temperature probe in the battery room where best represents the ambient temperature of the battery. Do
not connect it to other heat-generating equipment. When the battery is outside the cabinet, the temperature probe
cannot be placed in the cabinet.
Connecting dry contacts
The controller provides three pairs of dry contacts, which are J402 ~ J404 dry contacts shown in Figure 2-14.
The connection method is as follows:
Peel one end of the signal cable and insert it into the J402 ~ J404 terminals. Fasten the connection by tightening the
screw on the terminal.
The functions of J402 ~ J404 dry contacts are given in Table 2-5.
Table 2-5 Dry contact functions
Terminal
Function
Terminal
Function
J402_1 (DO1)
Mains failure
J403_1/ J404_1 (DO5)
LLVD
J402_2 (DO2)
DC over/ under-voltage
J403_2/ J404_2 (DO6)
Reserved
J402_1/ J403_1 (DO3)
Rectifier failure
J404_1 (DO7)
Reserved
J402_2/ J403_2 (DO4)
BLVD
J404_2 (DO8)
Reserved
Note: The above functions are default settings. You can change them through the controller