Esento Marine 2-4 Installation, Commissioning & Operating Manual
Approved Document UI-ESENMAR-01 Issue 6.0
13
INSTALLATION
CONNECTING THE BATTERIES
BATTERY CHARGING VOLTAGE CHECKS
EARTH FAULT MONITORING
Batteries of even very small capacity are capable of delivering very high currents which can cause fire or
injury, therefore battery connections should be done with caution.
The panel is supplied with battery leads already connected to the battery terminals on the main PCB.
These leads are coloured red for +ve and black for -ve.
2 x 12v batteries should be connected in series using the
white jumper lead provided. See diagram.
To optimise the service life of the batteries, the battery
charger output voltage varies with temperature.
N.B.
In the event of mains failure, the battery charger circuit will
protect the batteries from full discharge by disconnecting
them when they reach below 19v. When the mains supply
is restored the batteries will be automatically reconnected.
+ve
-ve
12v SLA Battery
12v SLA Battery
+ -
BATTERY
1
2
3
ON
NOTE:
If the mains is connected before the batteries, the panel will show a Power Supply fault for up to 1 minute
until the monitoring cylce has finished polling. This is normal. If the fault doesn’t clear after 1 minute, check
connections.
For on ship use:- battery retaining clamps must be fitted.
The battery charging voltage is factory calibrated to 27.3vdc +/- 0.2v @ 20
o
C. This should not normally
require adjustment. Where battery problems are experienced, the following information should be
considered.
a) If a battery is disconnected from the charger, no voltage will appear on the output leads or terminals,
due to intelligent battery controls.
b) Check the power supply voltage at the 28v & 0v supply output terminals. With the batteries
disconnected the voltage should be 27.6vdc +/- 0.2v @ between 11
o
C - 40
o
C.
c)
To test the batteries, turn off the mains and see if the system will run on the batteries. Check the
battery voltage, should be 26.8v for a good battery or 22v for a flat battery.
d) The power supply voltage can be adjusted using the potentiometer on the power supply module (see
page 7), checking at the 28v & 0v output terminals with a calibrated volt meter. Batteries should be
disconnected and the Access Level 3 DIL switch should be set to ‘ON’ (see page 17), which will over
ride the temperature compensation controls. Carefully adjust the voltage to 27.6vdc +/- 0.2v. When
completed, switch off Access Level 3 DIL switch and re-connect the batteries.
e) When the panel is re-charging a low battery, it should be possible to see the voltage across the
batteries increase gradually. If this is not occurring, the batteries or the panel may be faulty.
The Marine panels are equipped with earth fault monitoring to the 28v supply rails. Any cable connected
to earth will cause an earth fault to be indicated. The earth fault LED is located internally next to the
program options switch on the main circuit board. If an earth fault exists a PSU Fault (and General Fault)
will be indicated externally. The internal LED will show continuously for earth faults on the -ve polarity
cables and pulse for +ve polarity cables. (Be aware sounder cables monitor in reverse). Identifying the
source of the earth fault requires systematically removing cables until the fault clears. There is a 30
second delay to the earth fault signal to avoid spurious faults due to noise.
Содержание ESEN-2MAR
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