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2.4.4    Connecting Battery Cable 

The power system can be accessed in one group of batteries controlled by a battery MCB. 
The battery MCB is located on the front panel of the power system and the battery 
connection terminal is at the rear right side of the subrack. During connection, connect the 
negative battery cable to the battery terminal '-' and then connect the positive battery 
cable to the battery terminal '+'. Terminal connection method:

 

As shown in Figure 2-10, 

use a flat-blade screwdriver, gently pull out the insulation film to prevent short circuit, 
loosen the screw, insert the corresponding cable end into the corresponding positive and 
negative terminals, and then tighten both screws. After that cover the terminal screw with 
the insulation film to avoid accidental short circuit. 

 

Screwdriver

Battery input

 

 

Screwdriver

Battery input

 

 

Battery input terminal

 

Figure 2-10    Illutration of battery connection terminal   

2.4.5    Connecting Communication Cable 

Connecting M225S dry contact output port 

The controller is configured with two pairs of alarm dry contact output (DO1 ~ DO2) as 
standard configuration and four expanded outputs (DO3 ~ DO6) as optional. The dry 
contact that generating corresponding alarm is normally closed, users can connect 
according to actual needs. When wiring, connect the multi-core communication cable with 
the pipe terminal to the corresponding dry contact according to the dry contact silkprint 
on the controller, and then insert the terminal into the controller front panel. The position 
of communication terminal and port definition are shown in Figure 2-11 (Users need to 
prepare signal cable themselves). 

 

Figure 2-11    Illutration of controller front panel 

Connecting RS232 port of M225S controller 

The RS232 port is used for communication with the host. The correlation of the RS232 and 
DB9 port on the host is shown in Table 2-2. When wiring, connect the multi-core 
communication cable with the pipe terminal to the corresponding terminal according to 
the RS232 port silkprint on the controller, and then insert the terminal into the controller 
front panel, as shown in Figure 2-11 (Users need to prepare signal cable themselves). 

Table 2-2    Correlation of ports 

RS232 port 

DB9 port 

1 (Tx) 

2 (Rx) 

3 (GND) 

 

Connecting M831A dry contact output port 

The controller is configured with four pairs of alarm dry contact output (DO1 ~ DO4) as 
standard configuration and two routes of DI input and one route of RS485 output. The dry 
contact that generating corresponding alarm is normally closed, users can connect 
according to actual needs. The two routes of DI input only need to input DI dry contact and 
no need to input external power. When wiring, connect the multi-core communication 

cable with the pipe terminal to the corresponding dry contact according to the dry contact 
silkprint on the controller, and then insert the terminal into the controller front panel. The 
position of communication terminal and port definition are shown in Figure 2-12 (Users 
need to prepare signal cable themselves). 

DO1-COM

1 2 3 4 5 6 7

8 9 10 11 12 13 14

DO1-NC/NO

DO2-COM

DO2-NC/NO

DO3-COM

DO3-NC/NO

DO4-COM

DO4-NC/NO

DI1-1

DI1-2

DI2-1

DI2-2

RS485A

RS485B

 

Figure 2-12    Illutration of NetSure 2100 A31-S3 rear signal output 

Connecting Ethernet port of M831A controller 

The front panel of M831A is configured with an Ethernet port. When wiring, just insert the 
network cable into the Ethernet port, as shown in Figure 2-13 (Users need to prepare 
network cable themselves). 

 

Figure 2-13    Illutration of M831A controller front panel 

2.4.6    Connecting Temperature Compensation Cable

 

For NetSure 2100 A31-S2 configuration, the corresponding controller is M225S, and a 
battery temperature compensation cable (Temp. cable for short) is configured. Take out 
the Temp. cable from the accessory at the site and connect the cable as follows. 

1. Loosen the two screws fixing the panel at the rear of the subrack, and use a knife to cut 
along the cross center of the rubber ring, as shown in Figure 2-14. 

 

Figure 2-14    Lossening the fixing screw 

2. Lead the white terminal of Temp. cable through the rubber ring, as shown in 
Figure 2-15. 

 

Figure 2-15    Leading the cable through rubber ring 

3. Pull out the terminal labeled ‘Temp’ fromt the subrack power supply, as shown in 

Figure 2-16. 

Summary of Contents for NetSure 2100 A31-S2

Page 1: ...drop mechanical strength and the cable design should meet relevant industry standards 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 more than 10mm2 Select the DC load cable CSA according to the Table 2 1 Table 2 1 DC load cable CSA selection Load route rated current Max output current Min cable CSA Max cable...

Page 2: ... 3 MCB Load output route 4 MCB Load output route 4 MCB Load output route 3 MCB Load output route 2 MCB Load output route 1 MCB Battery input terminal Temp cable input port Figure 2 7 NetSure 2100 A31 S3 layout 2 4 1 Connecting Earth Cable A M6 grounding stud is reserved on the mounting bracket The grounding cable is yellow green double color cable with cable specification up to 10mm2 The cable end...

Page 3: ...nd then insert the terminal into the controller front panel as shown in Figure 2 11 Users need to prepare signal cable themselves Table 2 2 Correlation of ports RS232 port DB9 port 1 Tx 2 2 Rx 3 3 GND 5 Connecting M831A dry contact output port The controller is configured with four pairs of alarm dry contact output DO1 DO4 as standard configuration and two routes of DI input and one route of RS485...

Page 4: ...cal engineer can maintain and operate this equipment In operation the installation personnel are not allowed to wear conductive objects such as watches bracelets bangles and rings During operation parts of this equipment carry hazardous voltage Wrong operation may result in severe or fatal injuries and property damage Before the test Installation check must be done before testing Then the batterie...

Page 5: ...Charge Shunt Number 1 String1 norminal capactity Batt Charge String1 norminal capactity 100Ah String1 rated current Batt Charge String1 rated current 75A String1 rated voltage Batt Charge String1 rated voltage 25mV Float voltage Batt Charge Float voltage 53 5V Boost voltage Batt Charge Boost voltage 56 4V LVD2 Enable LVD LVD2 Enable Enable LVD2 voltage LVD LVD2 voltage 43 2V Contactor type LVD Con...

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