Trouble Shooting - Manson Engineering Industrial SBC-5925 Operation Manual

Trouble Shooting

The Fault LED is solid on when a protection is triggered and output of the charger is off. When the cause of
the fault has been clear up, Fault LED becomes off and charger returns to normal operation. Almost all the
protections are by software design and self recoverable, once the cause of fault has been dealt with. There
are two layers of protection for Input and Output Over-Voltage, the frst layer is by software and the second
layer by hardware as a double insurance to protect the charger and the connected devices.
Problem
Low Voltage
Disconnect (LVD)
Ignition Control is not
set to Auto ON
Low Voltage
Disconnect (LVD)
Ignition Control is set
to Auto ON
Output Over Voltage
Protection (Output
OVP)
Two layers of
protection
First layer by software
Second layer by
hardware
Input Over Voltage
Protection (Input OVP)
Two layers of
protection
First layer by software
Second layer by
hardware
Input Over Voltage
Protection (Input OVP)
by hardware.
Over Temperature
Protection (OTP)
FAN fault
Indication Possible Causes
Fault LED ON 12V battery system:
Input voltage <12.8V for
20s.
Fault LED ON 24V battery system:
Input voltage <25.6V for 20s
Fault LED ON 12V battery system:
Input voltage <9V for 5s
Fault LED ON 24V battery system:
Input voltage <18V for 5s
Fault LED ON Software OVP:
Output terminal voltage >set
absorption Voltage +0.6V
for 2s.
Fault LED ON Hardware OVP:
Output terminal voltage
>17.0V.
FUSE will blow.
Fault LED ON Software input OVP:
Charger output will be
PV LED may shutdown when input DC
also be on at the voltage higher than 32V.
same time.
All LEDs OFF Hardware Input OVP:
including the The FUSE will blow when
FAULT LED. input terminal voltage higher
than 33.5V.
Fault LED ON Charger internal
temperature is too high.
Fault LED ON FAN not working
Suggested Solution
Check the starter
battery voltage.
Use correct size cable
between charger and
starter battery.
Check the starter
battery voltage.
Use correct size cable
between charger and
starter battery.
Disconnect any load to
battery and check
battery voltage.
If no load connected to
battery in first place.
Check battery voltage
if over set absorption
voltage, disconnect
battery.
Check input battery
voltage is not higher
than 32V.
Find out about the
Input source condition
& spec such as
voltage surge etc.
Before replacing with
the new fuse.
Check input & exhaust
ends have no
blockage and
a minimum 10mm
clearance.
Check for objects
jamming fan or Fan is
out of order.
Recovery Condition
12V battery system:
Automatic recovery
when input voltage
rises above 13.4V for
60s.
24V battery system:
Automatic recovery
when input voltage
rises above 26.8V for
60s.
12V battery system:
Automatic recovery
when input voltage
rises above 11V for 5s.
24V battery system:
Automatic recovery
when input voltage
raise above 22V for 5s.
Software OVP:
Automatic recovery
when the voltage on
output terminal is
reduced below
absorption Voltage
+0.3V for 3s.
Hardware OVP:
Does not automatic
recovery
Required to replace the
blown FUSE.
Software Input OVP:
Automatic recovery
when the voltage on
input terminal is
reduced below 31.5V
for 5s.
Hardware input OVP:
Does not automatic
recovery
Required to replace the
blown
FUSE.
Automatic recovery
when charger
temperature reduce to
normal level.
Remove objects which
jamming
the fan .
2019/05 Rev.1
7673-5925-0561