WRM-20 e WRM-20+
Manuale installazione
WRM-20 and WRM-20+
User Manual
ITA
ENG
Rev. 1.2
25-07-2017
This document is the property of
WESTERN CO. Srl
- All rights are reserved - Reproduction and use of information contained within this document is forbidden without the written consent of
WESTERN CO. Srl
9
PHOTOVOLTAIC CHARGE REGULATOR
WRM-20
WRM-20+
con porta RS 485 protocollo WBus
WRM-20 is a complete solution for off-grid PV systems to supply power to road
signs systems, lighting systems, small low voltage systems and for the recharge
of batteries inside caravans. This model of charge regulator has a circuit for the
research of the maximum PV module power (MPPT): regardless of battery
voltage and its charge status, WRM-20 works with PV module in its maximum
power point maximizing the energy that comes from the module and then
loaded into the battery. Unlike PWM charge regulators that require PV
modules with 36 cells for the recharge of batteries at 12V and PV modules with
72 cells for the recharge of batteries at 24V, thanks to WRM-20 controller this
project restraint is no more necessary. With MPPT controllers you can install
the cheapest PV modules used in grid connected systems with a number of
cells different from 36 or 72. In addition you can use amorphous PV modules
that normally are not suitable for PWM charge regulators.
Several programs of load management, selectable by the user, make WRM-20
the complete solution in many applications i.e. to supply power to TVCC
cameras that have to work only during the day, or for blinking light systems /
road signs that have to work only during the night, or to supply power to
lighting systems that have to work only for a certain number of hours during
the night. WRM-20 detects the day/night status according to the PV module
voltage; therefore it’s not necessary to connect further sensors to the
regulator.
A wide display shows battery voltage, PV module charging current,
output load current and other variables.
Il modello
WRM-20+
è fornito con una porta di comunicazione RS485 che
implementa il protocollo WBus e permette di collegare il display WRD della
Western CO per il datalogger e il controllo remoto. La Western CO fornisce il
protocollo di comunicazione su questa porta e quindi l’utente può
implementare un proprio dispositivo datalogger o controllo remoto.
Step down MPPT charge
Maximum PV module power
310 W for 12 V battery
620 W for 24 V battery
Integrated blocking diode
For sealed / GEL , flooded lead acid
batteries and lithium-ion batteries
Temperature-compensated charge voltage
12V / 24V battery auto-detect voltage
18 programs for load management
LCD display user interface
Protections:
Load-disconnect in case of low battery
Over-temperature
Battery polarity inversion
Output overload protection
IP20 metal box
Porta di comunicazione RS 485 con
protocollo WBus proprietario Western CO
per data-logger o controllo con display
remoto WRD. (solo per versione WRM-20+)
