Section 4 - Samlexpower Evolution Series Owner's Manual

SECTION 3 |
3.15 BATTERY TEMPERATURE SENSOR FOR LEAD ACID BATTERIES
Lead Acid Battery charging voltages are required to be compensated based on the temperature of the battery cells.
Hence, Battery Temperature Sensor Model EVO-BCTS has been provided. Please see constructional and fitment details
at [Fig 2.5(a)] and [Fig 2.5(b)] respectively.
The sensor head contains a Negative Temperature Coefficient (NTC) Resistor with 2 output wires: "NTC+" is connected
to Pin 4 of the RJ-45 Plug and "NTC -" is connected to Pin 5 of the RJ-45 Plug. The RJ-45 Plug is required to be connected
to the RJ-45 Jack (6, Fig 2.1). The Temperature Sensor is used to ensure optimum charging of Lead Acid Batteries by
modifying the charging voltages based on the battery temperature. In addition to compensating Absorption, Float and
Equalization voltages, the voltage thresholds of parameters "LOW VOLTAGE ALARM", "BATTERY LOW VOLTAGE",
"RESET VOLTAGE", "BATTERY OVER VOLTAGE" and "RESET TO BULK" are also temperature compensated. Temperature
compensation will be carried out over temperature range of -20°C to +60°C. Table 6.2 shows the programmable range.
Default setting for the Temperature Coefficient of Voltage is -4mV/°C/Cell.
3.16 INSTALLING CONTROL INPUT WIRING FROM LITHIUM BATTERY MANAGEMENT SYSTEM
(BMS) TO ENABLE/ DISABLE CHARGING OR INVERTING
The Battery Charger Section is designed to charge Lead Acid, Nickel-Zinc (Ni-Zn) or Lithium Ion Batteries.
Lead Acid Battery charging voltages are required to be compensated based on the temperature of the battery cells.
Hence, Battery Temperature Sensor is required to be connected to the RJ-45 Jack (6, Fig 2.1) as explained at Section
3.15.
Charging voltages of Lithium Battery are not affected by temperature and hence, Battery Temperature Sensor is not
required to be used.
For charging Lithium Ion Battery, programming parameter "BATTERY TYPE" has to be changed from Setting 0=Lead
Acid (Default setting) to Setting 1=Lithium. This programming change is carried out using optional Remote Control
EVO-RC-Plus. Please refer to the following Sections of EVO-RC-PLUS Manual:
• Screen 22 in Fig 4.2 and Table 4.3
•

Section 4.4.2.22.1

Pins 4 and 5 of the RJ-45 Jack marked "Battery Temp. Sensor" (6 and 19, Fig 2.1) are required to be connected to the
Normally Open Contacts of relay in the Battery Management System (BMS) of the Lithium Battery for "Stop Charging
or "Stop Inverting" signals. [See details at Section 4.4.2.22.2 of EVO-RC-PLUS Remote Control Manual]. The BMS will
close the Relay contacts as follows:
• To "Stop Charging": Due to (i) overvoltage of individual cell / overall battery pack, or (ii) over temperature of
individual cell or overall battery pack
• To "Stop Inverting": Due to deep discharge to the level of Low Battery Cut Off Voltage
When the Relay contacts in the BMS close, Pins 4 and 5 of RJ-45 Jack will be shorted. The following actions will be
activated:
Installation
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