Still EXU-H-18, Original Instructions Manual

Page: 81 / 142

●
When the charger is neither connected to
the mains nor the battery, the "contact A"
and "contact B" outputs are electrically insu-
lated from one another.
●
When the charger is connected to the bat-
tery only, the "contact A" and "contact B"
outputs are electrically connected.
●
When the charger is connected to the
mains and the battery, the "contact A" and
"contact B" outputs are electrically insulated
from one another.
●
When the charger is connected to the
mains only, the "contact A" and "contact B"
outputs are electrically insulated from one
another.
(see wiring diagram)
Other charging characteristics
Maintenance charges
If the charger stays connected to the mains, it
restarts a charging cycle every 48 hours after
the end of the previous charge in order to
compensate for self-discharge.
Partial recharging
The charger adapts automatically to the bat-
tery discharge situation and therefore allows
any type of partial charging to be carried out
("opportunity charging").
The overcharging calculation takes into ac-
count partial recharging. The mixture is always
sufficient, without needless water consump-
tion, which prevents premature wear of the
batteries (often due to overlong charging peri-
ods) and reduces the need for maintenance.
Protection during charging
Mains micro-break protection
If the mains power is cut off, all the charging
parameters in progress are stored in the mem-
ory for 13 minutes. As soon as the mains pow-
er returns, charging resumes from the point (I,
U) at which it was cut off, with the number of
Ah already injected stored in the memory.
If the cut-off period is longer than 13 minutes
(the truck could have been used), a complete
charging cycle is initialised.
Time protection
If during phases I1 + P + U > 16H, the charger
becomes faulty. This can happen when a bat-
tery has a short-circuited component. Simply
reset the mains to cancel the fault.
Temperature safety
Since the charger is cooled by ventilation, the
air inlets and outlets must never be blocked.
The fan runs when the mains power is con-
nected. It stops when charging is complete or
when the mains power is disconnected.
The charger supplies reduced power if the
ambient temperature exceeds the usage tem-
perature range, in order to protect itself (the
charging period will be extended in this case).
The charger stops if the micro-controller de-
tects a temperature measurement fault.
Using the charger
Before charging, it is necessary to ensure that
the location selected for charging satisfies all
of the safety requirements.
NOTE
The charger is compatible with wet lead and
gel batteries with a maximum capacity of
400 Ah.
The charger is designed:
–
To be incorporated in the truck
–
To stay permanently connected to the bat-
tery
–
To operate in all positions
–
To stay connected to the mains during peri-
ods when the truck is not being used to en-
sure the availability of the machine
Use
4
Handling the battery
71 1152 801 15 17 EN - 02/2021 - 14