Stem NBC DC 12V 1B User manual

MANUALE NBC DC 12V 1B Versione 2 23/11/2016
STEM S.r.l. via della Meccanica, 2 I-27010 Cura Carpignano Pavia Italia Tel. [phone] Fax [phone] www.stemsrl.it [email protected]
Soggetto a modifiche tecniche senza avviso, nessuna responsabilità sarà assunta per ogni dettaglio. © STEM S.r.l.
NBC DC 12V 1B
(DC/DC Battery Charger)
1 Introduction
NBCDC 12V 1B is the complete solution to use only one product for control and recharging a 12V 7,2 Ah
acid lead battery, for the management of a maximum load of 3A.
The Control Unit uses a DC supply voltage (Vin 12-32 Vdc) and is optimized for use in combination with
photovoltaic panels.
2 Functionality
NBCDC 12V 1B is able to recharge a 12V battery with a maximum DC supply voltage load of 3A. The Battery Charger have a STEP-DOWN
architecture and the charging voltage is compensated by temperature with an external NTC sensor (optional).
Inside the Control Unit there is also a control loop for the optimization of the charge of the battery depending of the solar irradiation (MPPT).
Battery status monitoring during normal function (in presence of DC supply voltage):
DC Supply Voltage LED indicator lights GREEN, DC Supply Voltage alarm NOT ACTIVE.
- Battery disconnected or short circuit (Battery LED lit with RED color, alarm output ACTIVATED)
- Battery connected and charged, voltage higher than 13V (Battery LED lit with GREEN color, alarm output NOT ACTIVATED)
- Battery connected and in charging, voltage in the range 11.5V - 13V and charging current higher than 50 mA, battery is charging (Battery LED
blinking RED and GREEN, alarm output NOT ACTIVATED)
- Battery connected with voltage lower than 11.5V, battery is considered not compliant with the required specifications “battery damaged” (Battery
LED lit with RED color, alarm output ACTIVATED)
Battery status monitoring during emergency condition (lack of DC voltage power supply):
DC Supply Voltage LED indicator lights RED, DC Supply Voltage alarm ACTIVE.
In an emergency status, so when the battery starts running, the device allows you to monitor the battery voltage. When the battery voltage drops
below 9.5V the device will give an alarm (RED LED ON and alarm output ACTIVE).
3 General Technical Data
DATI TECNICI GENERALI
Input voltage
14-30 Vdc,
Battery charging voltage (no load) 14.5 V
Charging current 1 A Max
Battery type 12V – 7,2 Ah acid lead
Connection cables sections Battery cables: min 0.75 mm2 / Alarm cables: min 0,35 mm2
Housing dimensions Box: IP 20, Thickness: 17 mm, Height: 90 mm, Width: 60 mm
Battery full charging time 24 h
Working temperature 0°  50°C
Storage temperature -10°  +70°C
4 Battery Status
The control unit is able to detect certain conditions that allow an analisys of the status of the battery:
Battery status during normal function (in presence of DC supply voltage)
Battery status LED
(Vin_S)
LED
(Bat_S)
Battery output state
alarm ( Bat_F)
Battery supply voltage
alarm (Vin_F)
Battery disconnected, short circuit or
discharge Green ON Red ON Active (CLOSED) Not active (OPEN)
Battery connected and charged
(voltage higher than 13V) Green ON Green ON Not active (OPEN) Not active (OPEN)
Battery connected in charge (battery voltage
in the range 11.5V - 13V) Green ON Blinking
RED / GREEN Not active (OPEN) Not active (OPEN)
Battery status during emergency condition (lack of DC supply voltage)
Stato della batteria LED
(Vin_S)
LED
(Bat_S)
Battery output state
alarm ( Bat_F)
Battery supply voltage
alarm (Vin_F)
Battery worn out
(voltage lower than 9.5V) Red ON Red ON Active (CLOSED) Active (CLOSED)
Battery connected and charged
(voltage higher than 9.5V) Red ON Green ON Not active (OPEN) Active (CLOSED)

MANUALE NBC DC 12V 1B Versione 2 23/11/2016
STEM S.r.l. via della Meccanica, 2 I-27010 Cura Carpignano Pavia Italia Tel. [phone] Fax [phone] www.stemsrl.it [email protected]
Soggetto a modifiche tecniche senza avviso, nessuna responsabilità sarà assunta per ogni dettaglio. © STEM S.r.l.
5 Connettori
Inputs:
Name Description Range V Max I
Vin+ Positive input voltage 0-30 Vac 3A
Vin- Negative input voltage 0-30 Vac 3A
Outputs:
Nome Descrizione Range V Max I
Vbat+ Battery voltage + 0-15 Vdc 1A
Vbat- Battery voltage - 0-15 Vdc 1A
Bat_F Battery output state alarm collector side (NPN) 0-30 Vdc 0.05A
Vin_F Supply voltage alarm output (NPN) 0-30 Vdc 0.05A
Vload+ Charging voltage + 0-30 Vac 3A
Vload- Charging voltage - 0-30 Vac 3A
6 Mechanical
The control unit is enclosed in a modular container represented below:
ASSEMBLY
Installation must be performed by authorized personnel only. The battery charger NBCDC 12V 1B must be assembled in a suitable operating area
(switch cabinet, protective housing, at least IP 54). The unit is installed by clipping it to a standard 35 mm top-hat rail in accordance with EN 50022.
All outputs must be isolated from the main supply.
MANUTENZIONE E CONTROLLI
The correct operation of the control unit NBCDC 12V 1B must be controlled by the operator periodically checking the follows:
- Simulate the battery is faulty, disconnected and short-circuited
- correct closing of the connections
In the event of damage or wear and tear, the damaged component must be replaced.
Liability coverage is void under the following circumstances:
- If instructions are not followed
- Non-compliance with safety regulations
- Installation and electrical connection not performed by authorized personnel
- Non-implementation of functional checks
Setup:
If the control unit does not appear to function when operating voltage is applied (Green power in LED does not light up), the unit must be returned
unopened to the manufacturer.