Schaudt Electroblock EBL 252 User manual

Date: 23.01.2020
ESchaudt GmbH, Elektrotechnik und Apparatebau, Planckstraße 8, 88677 Markdorf, Germany, Tel. [phone], Fax [phone], www.schaudt--gmbh.de
8110253 BA / EN
Instruction Manual
Electroblock EBL 252
Contents
1 Safety information 2......................................
1.1 Meaning of safety symbols 2...............................
1.2 General safety information 2...............................
2 Purpose 3...............................................
3 Layout 4................................................
4 Operation 5..............................................
4.1 Switching on and off the 12V supply for the leisure area 5......
4.2 Shutting down 5..........................................
4.3 Changing the battery 6....................................
5 Functions 7..............................................
5.1 Battery functions 7........................................
5.2 Additional functions 7.....................................
6 Faults 7.................................................
7 Technical details 9........................................
8 Maintenance 10...........................................

Instruction Manual for Electroblock EBL 252
2Date: 23.01.2020 8110253 BA / EN
1 Safety information
1.1 Meaning of the safety symbols
DANGER!
Failure to comply with this sign may result in danger to life or physical condition.
WARNING!
Failure to comply with this sign may result in injury.
CAUTION!
Failure to comply with the sign may result in damage to equipment or other connected loads.
1.2 General safety instructions
The design of the device is state-of-the-art and complies with approved safety regulations.
Failure to observe the safety instructions may nonetheless lead to injury or damage to the
device.
Only use the device when it is in perfect technical condition.
Any faults affecting the safety of persons or the proper functioning of the device must be re-
paired immediately by specialists.
DANGER!
Live parts carrying 230V are inside the device. Danger of death due to electric shock or
fire. So therefore:
FDo not carry out maintenance or repair work on the device.
FIf cables or the device housing are damaged, no longer use the device and isolate it
from the power supply.
FEnsure that no liquids enter the device.
WARNING!
Hot components can cause burns. So therefore:
FOnly change blown fuses when the device is fully de-energised.
FBlown fuses may only be replaced once the cause of the fault is known and has been
rectified.
FNever bypass or repair fuses.
FOnly use original fuses rated as specified on the device.
FDevice parts can become hot during operation. Do not touch them.
FNever store heat sensitive objects close to the device (e.g. temperature sensitive clo-
thes if the device has been installed in a wardrobe).
CAUTION!
The electroblock, 12V consumers and connected devices can be damaged if the thresholds
for the 230V supply are exceeded. So therefore:
FEnsure that a generator complies with the mains connected load values.
FDo not connect the generator until it is running smoothly.
FDo not connect the electroblock to the mains supply on board passenger vehicle fer-
ries (a correct mains supply is not always guaranteed on board these ferries).
Generator
operation
and
passenger
vehicle
ferries

Instruction Manual for Electroblock EBL 252
3
Date: 23.01.2020
8110253 BA / EN
2 Purpose
The EBL 252 electroblock is the central power supply unit for all 12V consumers in the vehi-
cle’s electrical system.
+--
+--
IT ... / LT ... control
and display panel
Electroblock
EBL 252
Starter battery
Leisure battery12V consumers
Lighting
Pump
Heater
etc.
Solar
regulator
LR...
(accessory)
Solar module
(accessory)
Solar module
(accessory)
Auxiliary
charger
LAS ...
(accessory)
230V ~
Fig. 1 On-board power supply system
The EBL 252 electroblock consists of:
Fa charge module (18A) for charging all batteries connected
Fthe complete 12V distribution system
Ffuses for the 12V circuits
An IT ... or LT ... control and display panel must be connected to the EBL 252 for operation.
Together these devices control the electrical functions in the vehicle’s leisure area, including
accessories.
It is also possible to connect an auxiliary charger (LAS ...) and solar regulator (LR ...).
Flat vehicle fuses and resettable fuses (Polyswitch) protect the various circuits.
The electroblock is protected from:
FOvertemperature of the final charge stage
FOverload of the various outputs
FShort-circuit of the various outputs
Modules
System
devices
Protective
circuits

Instruction Manual for Electroblock EBL 252
4Date: 23.01.2020 8110253 BA / EN
3 Layout
12345678
12
9
1311 14
10
Fig. 2 Layout of the EBL 252 electroblock (front)
1 IT ... / LT ... control and display panel connector
2 Block 6: Output D+, consumer connected*
3 Block 5: Input D+, battery sensor*
4 Block 4: Spare, consumer not connected*
5 Block 3: Auxiliary charger*
6 Block 2: Solar regulator*
7 Block 1: Refrigerator *
* Also see the block diagram (page 12)
8 D+ signal changeover switch
9 Lead-acid/AGM battery selector switch
10 Installation feet
11 Compressor refrigerator fuse
12 Flat vehicle fuses
13 230VAC mains connection
14 Housing
123
Fig. 3 Layout of the EBL 252 electroblock (rear)
1 + connector, leisure battery
2 Earth connector
3 + connector, starter battery

Instruction Manual for Electroblock EBL 252
5
Date: 23.01.2020
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4 Operation
The EBL 252 electroblock does not require attendance for daily operation.
Initial setting is only needed after the type of battery (lead-acid or AGM) has been changed
or during commissioning or when upgrading with accessories (see Section 4.3 and the
EBL 252 installation instructions for details).
The ”D+ Signal” changeover switch should not be moved.
Operation of the electroblock functions thereafter is then only via the IT ... / LT ... operator
and control panel connected .
4.1 Switching on and off the 12V supply for the leisure area
The 12V supply for the leisure area is switched on and off from the IT ... / LT ... connected.
Following the instructions for the operator and control panel.
The following outputs are exceptions:
FSteady plus
FHeater
FCompressor refrigerator
FAdditional heater (50 W)
FStep
FAwning light
12V is applied permanently to these outputs. They can only be switched off with a shutdown
(see Section 4.2).
4.2 Closing down
The system should be shut down if the motorhome is not being used for a lengthy period
(such as during the winter).
A shutdown completely isolates the leisure battery from all consumers in the leisure area --
also from these normally powered continuously. The IT ... / LT ... operator and control panel
is an exception. .
CAUTION!
The leisure battery may be damaged beyond repair if totally discharged. So therefore:
FFully charge the leisure battery before and after a shutdown (connect the vehicle to
the mains for at least 12 hours and 24 hours for an 80Ah and 160Ah battery respecti-
vely).
The shutdown is performed by the operator and control panel connected.
Follow the instructions for the operator and control panel.

Instruction Manual for Electroblock EBL 252
6Date: 23.01.2020 8110253 BA / EN
4.3 Changing the battery
CAUTION!
Using incorrect battery types or incorrectly rated batteries can result in damage to the bat-
tery or devices connected to the electroblock. So therefore:
FOnly have batteries changed by qualified personnel
FFollow the battery manufacturer’s instructions
FOnly connect the electroblock to 12V power supplies with rechargeable 6 cell AGM or
lead-acid batteries. Do not use any unsuitable battery types.
Normally only batteries of the same type and rating should be used, i.e. the same as those
originally installed by the manufacturer.
It is possible to swap lead-acid batteries with AGM batteries. However, swapping from AGM
batteries to lead-acid batteries is only possible in certain circumstances. Contact the vehicle
manufacturer for further information.
DANGER!
Incorrectly setting the battery selector switch poses a risk of explosion (through the forma-
tion of detonating gas). So therefore:
FMove the battery selector switch to the correct position.
"Electrically isolate the battery from the electroblock -- and perform a shutdown on the IT
... / LT ... operator and control panel (see also Section 4.2).
"Isolate the electroblock from the mains.
"Replace the battery.
1
Fig. 4 Battery selector switch
"Move the battery selector switch (Fig. 4, Pos. 1) to the correct position using a thin object
(e.g. a ballpoint pen):
FAGM battery: Set the battery selector switch to ”AGM”.
FLead-acid battery: Set the battery selector switch to ”Blei-Säure”.
"After changing the battery, check again the type of battery used and then ensure that the
battery selector switch is in the correct position.
Changing
the battery

Instruction Manual for Electroblock EBL 252
7
Date: 23.01.2020
8110253 BA / EN
5 Functions
5.1 Battery charge functions
Simultaneous charging of the starter battery and the leisure battery by the alternator, parallel
connection of the batteries via a cut-off relay.
There is also simultaneous charging of the starter battery and leisure battery (up to 18A in
total) for a connection to the 230V supply. The switch ensures optimal charging of the lead-
acid and AGM battery types.
If a solar regulator is connected to the EBL 252, together with a solar panel, the two batte-
ries are charged automatically given sufficient sunshine.
5.2 Additional functions
This relay supplies the AES/compressor refrigerator with power from the starter battery
when the vehicle engine is running and the D+ connection is live. An AES refrigerator is also
powered by the leisure battery when the vehicle engine is not running.
CAUTION!
The ”AES / Compressor refrigerator” fuse (see Fig. 2, Pos. 11) may only be used when the
refrigerator installed in the vehicle is a compressor refrigerator. If it is deployed when using
an absorber refrigerator, the leisure battery is discharged within a short period.
The power supply of this consumer is interrupted automatically as soon as the engine is run-
ning. The awning light can still be used even if the 12V supply is switched off.
The power supply of this consumer is automatically switched on as soon as the engine is
running. Provided the engine is running, this means an additional electric heater can be ope-
rated for the vehicle. The output is enabled instead of the output for the awning light, and
hence has common fusing together with the awning light.
The power supply for the water pump is switched on and off by a switching stage in the
EBL 252 electroblock via the operator and control panel connected.
6Faults
A flat battery or defective fuse is the cause of most faults in the 12V system.
When it is not possible to rectify a fault based on the following table, please contact Schaudt
customer service (for address, see Page 11).
The following signals are protected by a resettable fuse (polyswitch):
F12V indicator
FBattery 1 sensor (starter battery) on operator and control panel, see block diagram on
Page 12
FOutput D+
Fault Possible cause Remedy
L
eisure batter
y
is not char
g
ed No mains volta
g
eSwitch on the automatic circuit
L
e
i
s
u
r
e
b
a
t
t
e
r
y
i
s
n
o
t
c
h
a
r
g
e
d
during 230V operation (battery
N
o
m
a
i
n
s
v
o
l
t
a
g
e
S
w
i
t
c
h
o
n
t
h
e
a
u
t
o
m
a
t
i
c
c
i
r
c
u
i
t
breaker in the vehicle; check the
g
p
(
y
voltage permanently below
1
3
3
V
)
;
mains voltage
13.3 V) Too many consumers are swit-
ched on
Switch off any consumers not
required
Defective electroblock Contact customer service
Leisure battery is overcharged
during 230V operation (battery
voltage constantly above
14.5 V)
Defective electroblock Isolate the device from the 230V
mains supply and contact custo-
mer service
Charging
whilst on the
move
Mains
charging
Charging
with
solar panel
AES/
compressor
refrigerator
Awning light
Additional
50W heater
Water pump
Flat vehicle
fuses
Polyswitch
fuses

Instruction Manual for Electroblock EBL 252
8Date: 23.01.2020 8110253 BA / EN
Fault RemedyPossible cause
Starter batter
y
is not char
g
ed No mains volta
g
eSwitch on the automatic circuit
S
t
a
r
t
e
r
b
a
t
t
e
r
y
i
s
n
o
t
c
h
a
r
g
e
d
during 230V operation (battery
N
o
m
a
i
n
s
v
o
l
t
a
g
e
S
w
i
t
c
h
o
n
t
h
e
a
u
t
o
m
a
t
i
c
c
i
r
c
u
i
t
breaker in the vehicle; check the
g
p
(
y
voltage permanently below
1
3
0
V
)
;
mains voltage
13.0 V) Too many consumers are swit-
ched on
Switch off any consumers not
required
Defective electroblock Contact customer service
Leisure battery is not charged
d
i
b
i
l
i
(
b
Defective alternator Have the alternator checked
y
g
during mobile operation (battery
voltage below 13.0 V) No voltage on D+ input Have the fuse and cabling chek-
ked
D+ switch on electroblock is not
set correctly.
Set the switch according to the
D+ signal from the vehicle (12V
or active ground)
Defective electroblock Contact customer service
The leisure battery is overchar-
ged during mobile operation
(battery voltage permanently
above 14,3/14,7 V)
Defective alternator Have the alternator checked
The refrigerator does not work
during mobile operation
No power supply to the refrige-
rator
Have the fuse (20A of supply;
possibly 1A of the D+ signal)
and wiring checked
Defective electroblock Contact customer service
Defective refrigerator Have the refrigerator checked
Solar charging does not work Solar charge regulator not plug- Plug in solar charge regulator
S
o
l
a
r
c
h
a
r
g
i
n
g
d
o
e
s
n
o
t
w
o
r
k
S
o
l
a
r
c
h
a
r
g
e
r
e
g
u
l
a
t
o
r
n
o
t
p
l
u
g
ged in
P
l
u
g
i
n
s
o
l
a
r
c
h
a
r
g
e
r
e
g
u
l
a
t
o
r
Defective fuse or cabling Have the fuse and cabling chek-
ked
Solar charge regulator defective Have solar charge regulator
checked
12V supply in the leisure area 12V main switch for the leisure 12V main switch for the leisure
1
2
V
s
u
p
p
l
y
i
n
t
h
e
l
e
i
s
u
r
e
a
r
e
a
does not work
1
2
V
m
a
i
n
s
w
i
t
c
h
f
o
r
t
h
e
l
e
i
s
u
r
e
battery is switched off
1
2
V
m
a
i
n
s
w
i
t
c
h
f
o
r
t
h
e
l
e
i
s
u
r
e
battery must be switched on
Not all plugs/fuses are plugged Pug all plugs and fuses (correct
N
o
t
a
l
l
p
l
u
g
s
/
f
u
s
e
s
a
r
e
p
l
u
g
g
e
d
into the electroblock
P
u
g
a
l
l
p
l
u
g
s
a
n
d
f
u
s
e
s
(
c
o
r
r
e
c
t
ratings) into the electroblock
Defective fuse or cabling Have the fuse and cabling chek-
D
e
f
e
c
t
i
v
e
f
u
s
e
o
r
c
a
b
l
i
n
g
H
a
v
e
t
h
e
f
u
s
e
a
n
d
c
a
b
l
i
n
g
c
h
e
k
ked
Defective electroblock Contact customer service
The charging current is reduced automatically if the device becomes too hot due to exces-
sive ambient temperature or lack of ventilation. Always prevent the device from overheating
nevertheless.
CAUTION!
When the automatic shut-off of the battery monitor is activated (also see the operating in-
structions for the DT / LT ... operator and control panel) , fully charge the leisure battery.

Instruction Manual for Electroblock EBL 252
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7 Technical details
Dimensions 130 x 275 x 170 (H x W x D in mm), inclu-
ding attachment feet
Weight Approx. 2 kg
Casing PA (polyamide)
Colour Gentian blue RAL 5010
Front Aluminium, powder coated, light grey (RAL
7035)
Mains connection 230V ~,10%, 47 to 63 Hz sinusoidal
Max. power consumption 230V ~1.9 A
Output voltage 12V DC
Max. overall output current, 12V DC 18 A
Storage temperature -- 20C ... 70C
Operating temperature -- 20C ... 45C
Protection class I
Protection rating IP20
Battery types AGM
Lead-acid
Battery rating 55 Ah or greater
Standby current from leisure battery With DT ... / LT ... control and display panel
: approx. 4 mA (depending on operator and
control panel used) under the following
conditions
FNo mains connection
FLeisure battery voltage 12.6V
F12V main switch ”OFF”
Charging for mains connection
FLeisure battery
Charging curve
Final charge voltage
Charging current
Voltage for conservation charging
IUoU
Lead-acid: 14,3 V / AGM: 14,7
18 A in the entire mains voltage range, elec-
tronically limited, minus the charging current
into the vehicle battery
13.7V with automatic switchover
FStarter battery
charge current, conservation charging Max. 2.6 A
Alternator D+ loading by EBL Approx. 1 mA
D+ output loading on EBL Max. 2 A
Solar regulator connector MNL 3-pin for batt. 1 and batt. 2; e.g.
Schaudt LR 1218
Solar regulator charge current Max. 20 A
Auxiliary charger connector MNL 2-pin, e.g. Schaudt LAS 1218
Charge current of aux. charger Max. 20 A
Renewed charging cycle For battery voltage below 13.7V
Switchover to main charge With approx. 5 seconds delay

Instruction Manual for Electroblock EBL 252
10 Date: 23.01.2020 8110253 BA / EN
Main charge
I
Full charge
Uo
Compensation
charge
U
4h
Time
Ucharge
V
14,3/14,7
13,7
Fig. 5 Example of the charging voltage curve with electroblock EBL 252
I Main charge with maximum 18 A charging current, electronically limited, up to final char-
ging voltage. Start of charge also for totally discharged batteries.
Uo Automatic changeover to full charge with constant 14,3/14,7 V. The duration of the fully
charge phase is 4h for both battery types.
U Automatic changeover to compensation charge with constant 13.7V. In the compensation
charge phase, the voltage at the output of the charging module is constant.
Start of a new charging cycle by switching over to main charge, if the battery voltage falls
below 13.7V for more than 5 seconds when loaded. Start of charge also for totally dischar-
ged batteries. The internal charge module can also be operated without leisure battery.
8 Maintenance
The EBL 252 electroblock requires no maintenance.
Clean the electroblock with a soft, slightly damp cloth and mild detergent. Never use spirit,
thinners or similar substances. Do not allow liquids to enter the electroblock.
No part of this manual may be reproduced, translated or copied without express written per-
mission.
Charging
curve
Cleaning
E

Instruction Manual for Electroblock EBL 252
11
Date: 23.01.2020
8110253 BA / EN
Appendix
A Customer service
Schaudt GmbH, Elektrotechnik & Apparatebau
Planckstraße 8
D-88677 Markdorf
Phone: [phone]
Email: [e-mail]
Web: www.schaudt.gmbh
Before sending in a device to us for repair, please
visit our website www.schaudt-gmbh.de. Under ”Service & Support”, you are able to see a
whole array of faults and their rectification in Frequently Asked Questions (FAQs).
If it is not possible here to locate and rectify the fault, the device can be sent in to us for re-
pair. Please proceed as follows:
"Pre-registration on the www.schaudt-gmbh.de website,
see ”Service & Support” -- repair registration RMA (if possible)
"If registration is not possible over the Internet, please enclose the completed fault report,
see Appendix B
"Send it to the addressee (free delivery)
B Fault report
In the event of damage, please fill in the fault report and send it with the faulty device to the
manufacturer.
Device type: _______________________
Item no.: _______________________
Vehicle: Manufacturer: _______________________
Model: _______________________
Own installation? Yes -No -
Upgrade? Yes -No -
Upstream overvoltage protection? Yes -No -
Following fault has occurred (please tick):
-Electrical consumers do not work -- which?
(please specify below)
-Switching on and off not possible
-Persistent fault
-Intermittent fault/loose contact
Other comments (use additional sheet i
f
required):
C EC Declaration of Conformity
Schaudt GmbH hereby confirms that the design of the LT 95 F LED panel complies with the
relevant regulations.
The original EU conformity declaration is available and can be referred to at any time.
Schaudt GmbH, Elektrotechnik & Apparatebau
Planckstrasse 8
88677 Markdorf
Germany
Customer
service
address
Send in
device
Manufacturer
Address

Instruction Manual for Electroblock EBL 252
12 Date: 23.01.2020 8110253 BA / EN
D Block diagram
Consumer 1
SB
WB
Consumer 2
Pump
Minifit SR 4F -- block 1
LR ...
HS Rel2 On
Circuit board KPL EBL 251
MNL socket cap 12F -- block 6
MNL socket cap 9F -- block 4
Steady plus
TV
Pump switch
nc
Mains indicator
Plug connector MSFQ/O 12F -- block 7
nc
MNL socket cap 2F -- block 3
+ leisure battery (batt. 2)
Leisure battery negative
+ sensor, leisure battery (batt. 2)
Negative sensor leisure battery (batt. 2)
12V indicator
+ Starter battery (batt. 1)
12V ON
12V OFF
Water tap (input)
Awning light
Step
Heater
+ batt. 1 for refrigerator *
Negative batt. 1 for
MNL socket
Negative, refrigerator
D+ point
Charging relay
Starter battery
Auxiliary charger
Leisure battery negative must be
starter battery negative.
Battery
cut--off relay
+ Starter battery (batt. 1)
HS relay 1
(60A)
Fridge
Refrigerator lines
must be routed separately
from other battery
lines to the
battery terminals.
*
Permanent
12V
Solar
charge regulator
Solar module
Switching stage
Mains 230V~50Hz
IEC connector
Changeover switch
Lead--acid
AGM
Relay
+ Refrigerator
Negative sensor leisure battery
+ sensor, leisure battery
D+ input
MNL socket cap 4F -- block 5
refrigerator *
D+ point
Important:
Only use fuse
for compressor
Aux. 50W heater
3F block 2
Consumer 3
--
HS relay 2
(60A)
HS Rel2 Off
refrigerator
coonected externally