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
14
Float Voltage
You can set
Float Voltage (VFlt at 25°C). When battery voltage is equal to charge
voltage (Vch) for Tabsorption time, WRM20 enter in float state, where battery voltage is
set to VFlt. Float Voltage is temperature compensate (
-24mV/°C at 12V and -48mV/°C at 24V
).
Change page
Absorption time
You can set
Absorption time in hours. When battery voltage is in Vch livel for
Absorption time, the WRM-20 start float state, where battery voltage is set to VFlt.
Change page
Configurazione Id WBus
Configura il numero identificativo (ID) del dispositivo su rete WBus (solo per versione
WRM-20+
)
Change page
Software version display page
It displays the software version in use on WRM-20.
You go back to the configuration page of the recharge program.
Pic. 4 Page settings
Once modified the settings of WRM-20 these become operative only after the exiting from the configuration pages
pressing simultaneously for at least 2 seconds the buttons
.
Error Codes
With the intervention of the internal protection of WRM-20 there are the error codes here below reported.
Error Code Table
When the symbol
low battery
is flashing this
indicates that there is the low battery protection
(to preserve the battery life, the load has been
disconnected). This protection intervenes when
the battery voltage goes under the threshold V
LB
that can be set by the user (fig. 4). WRM-20 leaves
this protection when the battery will be charged
by the PV module at V
OUT-LB
voltage (see Fig.8
“Table of electrical features”).
There is the overload protection. The load current
exceeded the maximum allowed limit for WRM-20
(
Iload
in the “Table of electrical features”) and the
regulator detached the load to prevent internal
damages. If there is such a signaling, it is necessary
to check if the current absorbed by the load is < of
the allowed limit. After 1 minute WRM-20 try to
power supply again the load and it exits from this
state if the cause that generated the overload has
been eliminated.
The battery was connected with inverted
polarities. Check the electrical connection of the
battery.
You have this error when battery voltage goes under
the thershold of 9.0V. When WRM-20 signaling this
error it disable the charging circuit.
You have this error when WRM-20 internal
temperature exceeds 80°C and deactivates the
recharge. You exit automatically from this
protection when the internal temperature goes
below the threshold 50°C. (note: the internal
temperature of the regulator is not displayed). If
you see often this protection we advise to place
the regulator in a fresher place.
Pic. 5
Error Code Table
