Operating Instructions
LRM 1218 Solar Charge Regulator
Table of contents
1 Safety information 2......................................
1.1 Meaning of safety symbols 2...............................
1.2 General safety information 2...............................
2 Introduction 3............................................
2.1 Purpose 3...............................................
2.2 Function of the LRM 1218 solar charge regulator 3............
3 Operation 4..............................................
4 Operating faults 5........................................
5 Technical details 6........................................
5.1 Mechanical details 6......................................
5.2 Electrical details 6........................................
5.3 Environmental parameters 7...............................
6 Maintenance 7...........................................
Appendix 8..............................................
E Schaudt GmbH, Elektrotechnik und Apparatebau, Planckstraße 8, 88677 Markdorf, Germany, Tel. +49 7544 9577-0, Fax +49 7544 9577-29, www.schaudt--gmbh.de
822.213 BA / EN
Date: 21.04.2015
Operating Instructions for Solar Charge Regulator LRM 1218
1 Safety information
1.1 Meaning of the safety symbols
Y DANGER!
Failure to comply with this sign may result in danger to life or physical condition.
Y WARNING!
Failure to comply with this sign may result in injury.
Y ATTENTION!
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 repaired immediately by specialists.
Y DANGER!
230V units carrying mains voltage.
Risk of fatal injury due to electric shock or fire:
F Do not carry out maintenance or repair work on the device
F If cables or the device housing are damaged, no longer use the
device and isolate it from the power supply
F Ensure that no liquids enter the device
Y WARNING!
Hot components!
Burns:
F Only change blown fuses when the device is fully de-energised.
F Blown fuses may only be replaced once the cause of the fault is
known and has been rectified.
F Never bypass or repair fuses.
F Only use original fuses rated as specified on the device.
F Device parts can become hot during operation. Do not touch them.
F Never store heat sensitive objects close to the device (e.g. tempera-
ture sensitive clothes if the device has been installed in a wardrobe).
2
Date: 21.04.2015 822.213 BA / EN
Operating Instructions for Solar Charge Regulator LRM 1218
2 Introduction
This instruction manual contains important information on safe operation of
the device. Make sure you read and follow the safety instructions provided.
The instruction manual should always be kept in the vehicle. All safety information must be passed on to other users.
2.1 Purpose
The MPP LRM 1218 solar charge regulator is for charging the batteries of
the motorhome by means of the solar modules connected.
Electroblocks
Batteries
Solar current display
LT 320 (accessory)
The solar charge regulator limits and controls the charging voltage of the
batteries. The LRM 1218 solar charge regulator can be connected to:
F a Schaudt electroblock with an STDBUS connection and a separate
connection for solar current
F a Schaudt electroblock with a separate connection for solar current
F a Schaudt electroblock with a retrofit adapter for charging the starter
battery
F directly to the batteries
Y To use the solar charge regulator with an electroblock, refer to the in-
struction manual for the electroblock.
For vehicles with SDTBUS, or when a digital control panel with solar current
display is available, the charging current is read by the shunt fitted in the
solar charge regulator, and displayed on the panel as solar current.
When used on systems without an integrated solar current display, the
separately available LT 320 control panel can be used as an accessory. It
enables the display of the solar charging current for the leisure and starter
batteries.
Function ofsolar cell
Maximum Power Point
Functional principle
of the LRM 1218
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2.2 Function of the LRM 1218 solar charge regulator
The power output of a solar cell is dependent on its load and temperature,
as well as other factors such as lighting intensity. A certain off-load voltage is
applied to a non-loaded solar cell under light irradiation.
The maximum power can be taken in the Maximum Power Point (MPP) of a
MPP
solar module. Because the solar module only delivers its highest yield in this
point, a regulator connected must be able to find this point, and keep it continually even under changing conditions.
The LRM1218 solar regulator is used to charge 6-cell, 12V lead batteries
(lead-acid, lead-gel and AGM batteries).
The solar regulator is a clocked converter featuring a very high efficiency
level. A microcontroller controls it such that the solar modules connected
always operate within the point of maximum power (the MPP) independently
of sun exposure, battery voltage and module temperature, whilst the battery
is in the main charging phase.
The charge voltages provided are aligned perfectly to the leisure battery by
means of a temperature sensor and the ability to set three battery types.
Date: 21.04.2015
3
Operating Instructions for Solar Charge Regulator LRM 1218
B
The starter battery is also charged -- as soon as the leisure battery has finished the main charging phase.
The solar regulator has an SDTBUS connector and so can be integrated
perfectly into bus systems from Schaudt. For the upgrading of older systems
(such as the DT 201 and DT 220 control panels in conjunction with EBL 101
and EBL 220), a connector with an appropriate analogue signal to display
the solar currents in the leisure and starter batteries is provided.
Two LEDs for ”Operation” and ”Charge retention” provide information on
function and broadly full battery. The device has a very compact and lightweight design. The fan fitted is very quiet and runs only when the performance is high.
Its function means the MPP LRM 1218 solar regulator is able to deliver (depending on conditions such as outside temperature and level of sunshine) a
5 ... 30% higher solar current than conventional series regulators (a low outside temperature and high level of sunshine would be ideal).
Leisure battery
Starter battery
Three different charging curves (”Lead-acid”, ”Lead-Gel/AGM I” and ”AGM
II”), or supply with a fixed voltage, can be set from two slide switches.
The charge curve however is dependent not only on the setting of the battery type switch, but also on the battery temperature determined (when an
optionally available battery temperature sensor is connected or when the
LRM 1218 is connected to an SDTBUS system having a battery temperature
sensor).
The preference is to load the leisure battery. As soon as the LRM 1218 restricts the loading voltage of the leisure battery, it indicates the broad charging of the leisure battery. Charging of the starter battery is activated at this
moment.
3 Operation
The solar charge regulator has no controls.
The LRM 1218 solar regulator may have to be readjusted when the battery
type is changed:
Switch settings
attery type set
Switch S1 Switch S2
Supply mode 1 A
AGM2 1 B
Lead-gel / AGM1 2 A
Lead-acid 2 B
Y The charge regulator supplies a constant output voltage in supply mode.
Y The two switches are well recessed to stop them being used incorrectly.
A small screwdriver may have to be used to change the switches.
4
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Operating Instructions for Solar Charge Regulator LRM 1218
p
y
Green LED
Yellow LED
S2
S1
Fig. 1 Battery setting switches and LEDs
Two LEDs show the current status of the regulator:
F Yellow LED: Device in charge mode (leisure and/or starter battery)
F Green LED: Charge retention active (leisure battery full)
F The two LEDs flash alternately: Supply mode
The solar currents are displayed on a control panel connected (such as an
L T 320) -- refer to the separate operating instructions.
Retrofitting a TF ...
battery temperature
sensor
Proceed as follows if a battery temperature sensor is to be retrofitted:
" Switch off the system from the main switch (control panel)
" Remove the ”Solar modules” connector on the LRM 1218
" Remove the ”Leisure and starter battery” connectors on the LRM 1218
" Plug the battery temperature sensor into the LRM 1218
" Plug the ”Leisure and starter battery” connectors into the LRM 1218
F The LRM 1218 solar regulator reconfigures itself automatically -- chan-
ged battery charge curves are now used.
" Plug the ”Solar modules” connector into the LRM 1218
Y A battery temperature sensor connected directly to the solar regulator
has the benefit that charging is temperature-controlled even when the
bus is not active (such as when not in use in the winter break).
4Faults
Please contact our customer service team if you cannot rectify the fault
using the following table.
If this is not possible, such as when you are abroad, the solar regulator can
continue to be used. For faults E271 and E272 (display of only SDT ... bus
systems possible), standard curves are used for charging. Charging is then
no longer temperature-controller.
Fault Possible cause Remedy
No display of the solar cur- Defective wiring Have the wiring checked
rent on the control panel
(if available)
822.213 BA / EN
Date: 21.04.2015
Solar charge regulator defective
Defective electroblock Contact customer service
Contact customer service
5
Operating Instructions for Solar Charge Regulator LRM 1218
g
Fault RemedyPossible cause
Batteries are not being Defective batteries Have the batteries checked
charged
Yellow LED flashing Output stage disabled (re-
SDT ... bus system
fault messages:
E270 No LRM 1218 on bus Check bus wiring
E271 Battery temperature sen-
E272 Battery temperature sen-
E273 Overload/overcurrent and/
*The temperature value available on the bus is used as an alternative for bus systems with another battery temperature sensor (such as a HELLA battery sensor).
If batteries are in perfect
working order: Solar
charge regulator defective
Defective electroblock Contact customer service
Defective wiring Have the wiring checked
gulator not being used)
due to overcurrent or overvoltage
sor short-circuit*
sor cable break or defective sensor*
or overtemperature
Contact customer service
Incorrect solar module (or
too many solar modules)
connected (input power
too high) -- contact customer service
Contact customer service
Check wiring/
connector
Contact customer service
Check wiring
Replace sensor
Incorrect solar module (or
too many solar modules)
connected (input power
too high) -- contact customer service
5.1 Mechanical details
Dimensions
Weight
Casing
5.2 Electrical details
Nominal voltage
Charging current
Suitable batteries
Suitable solar modules
5 Technical details
135x48x90(WxHxDinmm)
360 g
Plastic, blue (RAL 5010)
12 V DC
Up to 20 A for leisure and starter battery together;
leisure battery has priority;
e.g. only leisure battery for solar power 275 W:
F 20 A @ 13.2 V leisure battery voltage
F 18 A @ 14.4 V leisure battery voltage
6-cell lead batteries, 55 Ah and above (lead-acid, lead-gel, AGM)
F 36-cell modules as a minimum
F Off-load voltage 20 ... 32 V
F Maximum total capacity of solar modules 275 Wp
6
Date: 21.04.2015 822.213 BA / EN
Operating Instructions for Solar Charge Regulator LRM 1218
Calculation example
End-of-charge-
voltages
Suitable EBL ...
electroblocks and other
connection options
For example, five solar modules each rated at 55 Wp can be connected in
parallel:
Per solar module e.g. U
Total nominal current I
Battery type
set
Chargingvoltage
Charge retention voltage
offload
I
MPP
MPP
=22V,U
=3.2A
=16A
= 17.2 V
MPP
At reference
temperature
Time
phase
Supply mode Fixed voltage 13.4 V
AGM2 14.7 V 13.7 V 25 C 4h
Lead-gel/
14.4 V 13.8 V 25 C 12 h
AGM1
Lead-acid 14.4 V 13.4 V 25 C 4h
The temperature correction of end-of-charge voltages is --20 mV per degree
of temperature increase (in relation to 25 C) or +20 mV per degree of temperature reduction (voltage limits: U
13.4 V ; U
min
14.9 V ; the top voltage
max
limit at 14.9 V is in consideration of the maximum input voltage of the consumers connected).
F Schaudt electroblocks with SDTBUS (they have a separate input for
the solar currents of leisure and starter batteries, and a connector for
the SDTBUS)
5.3 Environmental parameters
Operating temperature
Storage temperature
Humidity
CE
F Schaudt electroblocks with a separate connector for the solar currents
of leisure and starter batteries; possibly also a connection for current
display (relayed to the DT .../LT ... control panel connected to the EBL
...)
F Schaudt electroblocks with a retrofit adapter for charging the starter
battery
F Direct connection to leisure and starter batteries for external systems;
solar current display by LT 320 (available optionally) possible
-10 Cto+50C
-20 Cto+70C
Operation in dry environment only
CE marked
6 Maintenance
The device requires no maintenance.
822.213 BA / EN
Cleaning
E
Clean the device with a soft, slightly damp cloth and mild detergent. Never
use spirit, thinners or similar substances. Do not allow liquids to enter the
device.
No part of this manual may be reproduced, translated or copied without express written permission.
Date: 21.04.2015
7
Operating Instructions for Solar Charge Regulator LRM 1218
Appendix
A EC Declaration o f Con fo rmity
Schaudt GmbH hereby confirms that the design of the LRM 1218 solar charger regulator complies with the following relevant regulations:
The original CE declaration of conformity is available for reference at any
time.
Manufacturer
Address
B Special fittings/accessories
Panel
Battery temperature
sensor
C Fault report
Schaudt GmbH, Elektrotechnik & Apparatebau
Daimlerstraße 5
88677 Markdorf
Germany
LT 320 instrument panel for connection to systems without a direct solar current display by the control panel
TF 50 A battery sensor to read the battery temperature -- is read automatically and has a bearing on the charging characteristics
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
Upgrade? Yes - No -
- No -
Following fault has occurred (please tick):
- Battery is not charged when solar modules are connected
- Persistent fault
- Intermittent fault/loose contact
Other comments:
8
Date: 21.04.2015 822.213 BA / EN
Operating Instructions for Solar Charge Regulator LRM 1218
D Customer service
Customer service
address
Send in device
E Mechanical layout
Schaudt GmbH, Elektrotechnik & Apparatebau
Planckstraße 8
88677 Markdorf, Germany
Phone: +49 7544 9577-16 Email: kundendienst@schaudt-gmbh.de
Office hours Mon to Thurs 08.00 -- 12.00, 13.00 -- 16.00
Fri 08.00 -- 12.00
Returning a faulty device:
" Complete and enclose the fault report, see Appendix C.
" Send it to the addressee (free delivery).
1
2
48
7.5
345
135
130.7
ø4 (2x)
3
90
60
119
Fig. 2 Dimensions and connectors for the LRM 1218 solar charge regulator
1 Solar module connection
2 Leisure and starter battery connections, via electroblock as required
3 STDBUS connector
4 Control panel connector, via electroblock as required
5 Battery temperature sensor connector
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Date: 21.04.2015
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Operating Instructions for Solar Charge Regulator LRM 1218
(blank page)
10
Date: 21.04.2015 822.213 BA / EN
Installation Instructions
LRM 1218 Solar Charge Regulator
Table of contents
1 Safety information 2......................................
1.1 Meaning of safety symbols 2...............................
1.2 General safety information 2...............................
2 Introduction 3............................................
3 Deliverables 3............................................
4 Mechanical installation 4...................................
5 Electrical connection 5....................................
5.1 Connections to leisure area battery and starter battery 6.......
5.2 Connection to an EBL ... electroblock with connected
5.3 Connection to an EBL ... electroblock with 3-pin
5.4 Connection to an EBL ... electroblock with SDTBUS 13.........
5.5 Block diagram/wiring diagram 14............................
6 Initial use 14..............................................
6.1 Checks prior to initial use 14................................
7 Technical details 15........................................
7.1 Mechanical details 15......................................
7.2 Electrical details 15........................................
7.3 Environmental parameters 15...............................
8 Storage, packaging and transportation 15.....................
DT ... / LT ... control and display panel 8.....................
MNL connector and adapter for starter battery 10..............
E Schaudt GmbH, Elektrotechnik und Apparatebau, Planckstraße 8, 88677 Markdorf, Germany, Tel. +49 7544 9577-0, Fax +49 7544 9577-29, www.schaudt--gmbh.de
822.213 BA / EN
Date: 21.04.2015
Installation instructions for solar charge regulator LRM 1218
1 Safety information
1.1 Meaning of the safety symbols
Y DANGER!
Failure to comply with this sign may result in danger to life or physical condition.
Y WARNING!
Failure to comply with this sign may result in injury.
Y ATTENTION!
Failure to comply with the sign may result in damage to equipment or other
connected loads.
1.2 General safety instructions
Y WARNING!
Hot components
Burns:
F Blown fuses may only be changed after the power to the system has
been disconnected.
F Blown fuses may only be replaced once the cause of the fault is
known and has been rectified.
F The back of the device can get hot during operation. Do not touch it.
Y ATTENTION!
Voltage carrying parts
Damage to devices:
F The motorhome or caravan’s electrical system must comply with DIN,
VDE and ISO regulations.
F Do not try to modify the device.
F Never try to start the device using a defective mains cable or with a
faulty connection.
F Never undertake maintenance on the device when it is live.
F Ensure proper electrical connections are made.
F Ensure correct electrical fuses are used.
2
Date: 21.04.2015 822.213 MA / EN
Installation instructions for solar charge regulator LRM 1218
2 Introduction
These installation instructions are aimed at trained personnel.
They contain important information on the connection and safe operation of
the device. The safety information provided must be observed.
Always follow the relevant instruction manual in addition to the installation
instructions.
3 Deliverables
Delivered as part of the LRM 1218 solar charge regulator:
F 1 x LRM 1218 solar charge regulator
F Connector set (small parts and connector cables) for the different
applications
F Operating instructions
F Installation instructions
1
3 4
5
2
7
Fig. 1 Small parts and accessories delivered with the LRM 1218 solar charge regulator
Pos. Qty Name
1 2 Flat vehicle fuse, 20A
2 1 Flat vehicle fuse, 15 A
3 2 Fuse holder for flat vehicle fuse
4 5 Flat push--on contacts, 6.3 x 0.8 without sleeve
5 2 Screws, 3.5 x 20
6 6 Flat push--on contacts, 6.3 x 0.8 (blue)
7 4 Insulating sleeves for pos. 4
6
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Date: 21.04.2015
3
Installation instructions for solar charge regulator LRM 1218
1
2
3
3
2
1
Fig. 2 Connector cables delivered with the LRM 1218 solar charge regulator
4
Pos. Qty Name
1 1
EBL ... connector cable (signals for display charge currents on DT ... / LT ...)
2 1 EBL ... connector cable (batteries for charge currents)
3 1 EBL ... adapter cable (charge current for starter battery)
for EBLs without direct starter battery solar charge current input
4 1 SDTBUS connector cable
Y Not all parts/cables are required for every different application.
4 Mechanical installation
Y This device is intended for installation into a vehicle.
1
2
3
Environment
" For applications in which the cables provided are used to connect to an
EBL ... electroblock from Schaudt (as in Sections 5.2 and 5.3), the solar
charge regulator must be installed in the direct vicinity of the electroblock
(max. distance to front plate 30 cm).
" For other applications, a dry and sufficiently ventilated place in the insula-
ted interior is to be selected for installation. No condensation is allowed to
form on the device. To prevent a build-up of heat, ventilation holes facing
the living area must be provided in the upper and lower areas of the
place of installation. Its cross-section is based on the size and average
temperature of the place of installation.
4
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Installation instructions for solar charge regulator LRM 1218
Minimum clearance
Fitting
" Ensure a minimum clearance to the surrounding fixtures and fittings:
F Maintain a gap of at least 5 cm on all sides (except mounted side).
F Whilst in operation, the ambient temperature must not exceed +45 C,
measured 2.5 cm away from the sides of the device.
" On a stable and even surface, attach the solar charge regulator to the
drillholes with two screws (Fig. 1, Pos. 5).
130.7
ø4 (2x)
3
90
60
119
Fig. 3 Attachment points for LRM 1218 solar charge regulator (dimensions in mm)
5 Electrical connection
Y ATTENTION!
The output voltage of the charge regulator is also suitable for direct supply
without battery. The solar charge regulator must be set accordingly for
this however.
The electrical connection of the solar charge regulator is ready for the following applications:
F Connections to leisure area battery and starter battery
F Connection to an EBL ... electroblock with connected DT ... / LT ...
control and display panel
F Connection to an EBL ... electroblock with 3-pin MNL connection and
adapter for starter battery
F Connection to 3-pin MNL connector and adapter for starter battery
and SDTBUS connector (bus systems)
822.213 MA / EN
Date: 21.04.2015
5
Installation instructions for solar charge regulator LRM 1218
5.1 Connections to leisure area battery and starter battery
Y ATTENTION!
Short circuits!
Damage to the solar charge regulator or fire damage to cable:
F To protect the supply lines in the event of a short circuit, connect the
fuses directly to the positive pole of battery.
Select cable cross-sections in line with EN 1648-1/-2. The maximum current
load must not exceed 90% of the individual fuse rating.
Recommended cable cross-sections:
Line length
(sum of supply and return lines)
Upto4m 2,5 mm
Upto8m 4,0 mm
Up to 12 m 6,0 mm
Cable cross-section
2
2
2
For this application, the follow parts are required from those delivered:
Fig./Pos.
Qty Name
-- 1 LRM 1218 solar charge regulator
1/2 2 Flat vehicle fuse, 20A
1/3 2 Fuse holder for flat vehicle fuse
1/4 4 Flat push--on contacts, 6.3 x 0.8 without sleeve
1/7 5 Insulating sleeve for Pos. 1/4
-- 5 Wire end sleeves (not included in delivery)
TF 50 A*
LT 320*
LRM 1218
3
+--
F1
--
F2
G1
+--
G2
G3
Fig. 4 Circuit diagram for LRM 1218 to starter battery and leisure area battery connectors
6
* Optional
Date: 21.04.2015 822.213 MA / EN
--+
Installation instructions for solar charge regulator LRM 1218
Pos. Name
F1 Fuse for starter battery charge current (20A)
F2 Fuse for leisure area battery charge current (20A)
G1 Starter battery
G2 Leisure battery
G3 Solar module(s)
LRM 1218 Solar charge regulator
L T320* Control panel solar charge currents (optional special configura-
tion; cable delivered with the panel)
TF 50 A* Temperature sensor (special configuration, see also Section
5.5)
Connection sequence
Establish the connection on the side of the solar charge regulator in the following order:
" 1. Connect the two fuse holders with fuses to the connection cable in ac-
cordance with the circuit diagram in Fig. 4. Use the flat push--on contacts (6.3 x 0.8) without sleeve for this (Fig. 1, Pos. 5). After crimping,
attach the insulating sleeves (Fig. 1, Pos. 7). Insert the two fuses.
" 2. First connect the connection cables for living area battery and starter
battery to the solar charge regulator, observing the polarity of the connections. Use wire end sleeves for this (not included in the delivery).
" 3. Connect the cables for leisure area battery and starter battery to the
batteries.
" 4. Finally, connect solar modules to the solar charge regulator. Use wire
end sleeves for this (not included in the delivery).
Y Steps 5. ... 9. ONLY when a TF 50 A temperature sensor is fitted (optio-
nal):
" 5 Clamp the TF 50 A battery sensor to one of the terminals (preferable
the negative terminal) of the leisure area battery (note: this is NOT an
electrical connection -- only the temperature of the battery terminal is
read with this mechanical connection; this is virtually identical to the
internal temperature of the battery)
822.213 MA / EN
Disconnection
" 6. Guide the cable through the vehicle to the LRM 1218 solar charge
regulator.
" 7. Plug the TF 50 A battery sensor connector into the LRM 1218 solar
charge regulator.
" 8. Secure the battery sensor cable at a suitable place (particularly near
the connector on the LRM 1218 to prevent the 2-pin connector from
coming loose).
" 9. Unplug the ”Solar modules” and ”Leisure area and starter batteries”
connectors from the LRM 1218 and plug them back in again after 30
seconds. This ”registers” the sensor.
Disconnect in the reverse order.
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7
Installation instructions for solar charge regulator LRM 1218
5.2 Connection to an EBL ... electroblock with connected
DT ... / LT ... control and display panel
For this application, the follow parts are required from those delivered:
Fig./Pos.
Qty Name
1 1 LRM 1218 solar charge regulator
1/1 or 2 1 20A or 15A flat vehicle fuse (depending on EBL ...)
2/1 1
EBL ... connector cable (signals for display charge
currents on DT ... / LT ...)
2/2 1 EBL ... connector cable (batteries for charge cur-
rents)
-- 2 Wire end sleeves (not included in delivery)
TF 50 A*
EBL ...
LRM 1218
3
on block
”Solar charge
regulator”
Y
White
Brown
Red
Black
--
Brown
X
EBL ...
on block
”Solar charge
regulator”
+
G3
Fig. 5 Circuit diagram for LRM 1218 connection to EBLs with solar regulator connector
and connector for current display (* optional)
--+
8
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Installation instructions for solar charge regulator LRM 1218
Pos. Name
X Cable with electroblock connector:
-- X1 Brown Negative battery
-- X2 Red + Starter battery
-- X3 Black + Leisure area battery
Y Cable with DT .../LT ... control and display panel connector
-- Y1 Brown Leisure area battery signal
-- Y2 White Starter battery signal
G3 Solar module(s)
LRM 1218 Solar charge regulator
TF 50 A* Temperature sensor (special configuration, see also Section
5.5)
Connection sequence
Establish the connection on the front of the solar charge regulator in the following order:
" 1. Connect the electroblock with cable X (connection cable EBL ...
(charge currents for batteries), Fig. 2, Pos. 2).
" 2. Connect the electroblock with cable Y (signals for display of charge
currents on DT ... / LT ..., Fig. 2, Pos. 1).
" 3. Fit the right flat vehicle fuse (15A or 20 A; Fig. 1, Pos. 1 or 2) into the
”Solar” fuse on the EBL ...
" 4. Finally, connect solar modules to the solar charge regulator. Use wire
end sleeves for this.
Y The correct fuse rating is printed on the front plate of the EBL... electro-
block. See also the block diagram in the operating instructions for the
electroblock.
Y Steps 5. ... 9. ONLY when a TF 50 A temperature sensor is fitted (optio-
nal):
" 5 Clamp the TF 50 A battery sensor to one of the terminals (preferable
the negative terminal) of the leisure area battery (note: this is NOT an
electrical connection -- only the temperature of the battery terminal is
read with this mechanical connection; this is virtually identical to the
internal temperature of the battery)
822.213 MA / EN
Disconnection
" 6. Guide the cable through the vehicle to the LRM 1218 solar charge
regulator
" 7. Plug the TF 50 A battery sensor connector into the LRM 1218 solar
charge regulator
" 8. Secure the battery sensor cable at a suitable place (particularly near
the connector on the LRM 1218 to prevent the 2-pin connector from
coming loose)
" 9. Unplug the ”Solar modules” and ”Leisure area and starter batteries”
connectors from the LRM 1218 and plug them back in again after 30
seconds. This ”registers” the sensor.
Disconnect in the reverse order.
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9
Installation instructions for solar charge regulator LRM 1218
5.3 Connection to an EBL ... electroblock with 3--pin MNL connection and adapter for starter battery
When using an electroblock which only has a 3--pin connection for a solar
charge regulator, an adapter for charging the starter battery can be retrofitted. It is then possible to charge the leisure area and starter batteries simultaneously.
The following electroblocks (as of April 2008) can be used with the adapter:
F EBL 99
F EBL 100
F EBL 264-9
F EBL 240
F EBL 269
An LT 320 operating and display panel, for the display of solar charge currents, can be used as an optional accessory.
For this application, the follow parts are required from those delivered:
Fig./Pos. Qty Name
1 1 LRM 1218 solar charge regulator
1/1 or 2 1 20A or 15A flat vehicle fuse (depending on EBL ...)
2/2 1 EBL ... connector cable (leisure area battery charge
current). Here the middle wire on the connector
must be detached and the red cable be pulled from
the insulating sleeve.
2/3 1 EBL ... connector cable (starter battery charge cur-
rents) is looped in between cable loom and EBL
-- 2 Wire end sleeves (not included in delivery)
10
Date: 21.04.2015 822.213 MA / EN
Installation instructions for solar charge regulator LRM 1218
Black
EBL ...
on block
LRM 1218
Ya Yb
Red Red
TF 50 A*
Brown
Yellow
Brown
Cable loom
3
2xRed
Black
--
Brown
LT 320*
EBL ...
on block
”Solar charge
regulator”
+
G3
Fig. 6 Circuit diagram for LRM 1218 connection to EBL ...
--+
Pos. Name
X Cable with electroblock connector:
-- X1 Brown Negative battery
-- X2 -- Not assigned (detach red cable on connector
and remove from insulation sleeve)
-- X3 Black + Leisure area battery
Y Electroblock adapter cable
-- Ya To available electroblock cable
-- Yb To electroblock
-- Y1 Red + Starter battery
-- Y2 Brown Negative sensor, leisure area battery
-- Y3 yellow D+ input
-- Y4 Brown Negative starter battery for refrigerator
-- Y5 Black + Leisure area battery sensor
G3 Solar module(s)
LRM 1218 Solar charge regulator
L T320* Control panel solar charge currents (optional special configu-
ration; cable delivered with the panel)
TF 50 A* Temperature sensor (special configuration, see also Section
5.5)
X
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Date: 21.04.2015
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Installation instructions for solar charge regulator LRM 1218
Connection sequence
Establish the connection on the front of the solar charge regulator in the following order:
" 1. On the electroblock, disconnect the vehicle--side 5-pin cable carrying
the starter battery supply.
" 2. Connect the electroblock with cable Y (adapter cable EBL ... (starter
battery charge current), Fig. 1, Pos. 3):
F Ya to the vehicle--side cable
F Connect Yb on the electroblock
" 3. On cable X (Fig. 1 Pos. 2), detach the red cable on the connector
housing and pull the cable from the insulating sleeve. It is no longer
required.
" 4 Connect the electroblock with cable X (connection cable EBL ...
(now only for caravan battery charge current, Fig. 1, Pos. 2).
" 5. Fit the right flat vehicle fuse (15A or 20 A; Fig. 1, Pos. 2 or 3) into the
”Solar” fuse on the EBL ...
Y The correct fuse rating is printed on the front plate of the EBL... electro-
block. See also the block diagram in the operating instructions for the
electroblock.
" 6. Finally, connect solar modules to the solar charge regulator. Use wire
end sleeves for this.
Y The correct fuse rating is printed on the front plate of the EBL... electro-
block. See also the block diagram in the operating instructions for the
electroblock.
Y Steps 7. ... 11. ONLY when a TF 50 A temperature sensor is fitted (optio-
nal):
" 7 Clamp the TF 50 A battery sensor to one of the terminals (preferable
the negative terminal) of the leisure area battery (note: this is NOT an
electrical connection -- only the temperature of the battery terminal is
read with this mechanical connection; this is virtually identical to the
internal temperature of the battery)
" 8. Guide the cable through the vehicle to the LRM 1218 solar charge
regulator
" 9. Plug the TF 50 A battery sensor connector into the LRM 1218 solar
charge regulator.
" 10.Secure the battery sensor cable at a suitable place (particularly near
the connector on the LRM 1218 to prevent the 2-pin connector from
coming loose).
" 11.Unplug the ”Solar modules” and ”Leisure area and starter batteries”
connectors from the LRM 1218 and plug them back in again after 30
seconds. This ”registers” the sensor.
12
Disconnection
Disconnect in the reverse order.
Date: 21.04.2015 822.213 MA / EN
Installation instructions for solar charge regulator LRM 1218
5.4 Connection to an EBL ... electroblock with SDTBUS
For this application, the follow parts are required from those delivered:
Fig./Pos.
Qty Name
1 1 LRM 1218 solar charge regulator
1/1 or 2 1 20A or 15A flat vehicle fuse (depending on EBL ...)
2/2 1 EBL ... connector cable (batteries for charge currents)
2/4 1 SDTBUS connector cable
-- 2 Wire end sleeves (not included in delivery)
TF 50 A*
LRM 1218
3
White
Brown
Red
Black
--
Brown
X
EBL ...
on block
”Solar charge
regulator”
G3
+
--+
2
1
3
231
Y
EBL ... on block ”SDTBUS”
Fig. 7 Circuit diagram for LRM 1218 connection to EBLs with SDTBUS
Pos. Name
X Cable with electroblock connector:
-- X1 Brown Negative battery
-- X2 Red + Starter battery
-- X3 Black + Leisure area battery
Y SDTBUS to electroblock connector cable
G3 Solar module(s)
LRM 1218 Solar charge regulator
TF 50 A* Temperature sensor (special configuration, see also Section 5.5)
822.213 MA / EN
Date: 21.04.2015
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Installation instructions for solar charge regulator LRM 1218
Connection sequence
Establish the connection on the front of the solar charge regulator in the
following order:
" 1. Connect the electroblock with cable X (connection cable EBL ...
(charge currents for batteries), Fig. 2, Pos. 2).
" 2. Connect the electroblock with cable Y (SDTBUS, Fig. 2, Pos. 4).
" 3. Fit the right flat vehicle fuse (15A or 20 A; Fig. 1, Pos. 1 or 2) into the
”Solar” fuse on the EBL ...
" 4. Finally, connect solar modules to the solar charge regulator. Use wire
end sleeves for this.
Y The correct fuse rating is printed on the front plate of the EBL... electro-
block. See also the block diagram in the operating instructions for the
electroblock.
Y Steps 5. ... 9. ONLY when a TF 50 A temperature sensor is fitted (optio-
nal):
" 5 Clamp the TF 50 A battery sensor to one of the terminals (preferable
the negative terminal) of the leisure area battery (note: this is NOT an
electrical connection -- only the temperature of the battery terminal is
read with this mechanical connection; this is virtually identical to the
internal temperature of the battery).
" 6. Guide the cable through the vehicle to the LRM 1218 solar charge
regulator.
Disconnection
5.5 TF 50 A battery temperature sensor (opt io n al)
" 7. Plug the TF 50 A battery sensor connector into the LRM 1218 solar
charge regulator.
" 8. Secure the battery sensor cable at a suitable place (particularly near
the connector on the LRM 1218 to prevent the 2-pin connector from
coming loose).
" 9. Unplug the ”Solar modules” and ”Leisure area and starter batteries”
connectors from the LRM 1218 and plug them back in again after 30
seconds. This ”registers” the sensor.
Disconnect in the reverse order.
The optional TF 50 A battery temperature sensor is used to implement battery temperature--controlled charging. The LRM 1218 solar regulator must
be fully isolated from the power for the sensor to be detected (unplug the
connectors for solar modules and batteries, and plug them in again after 30
seconds).
A battery temperature sensor can also be ”deregistered” by first unplugging
the connectors for solar modules and batteries on the LRM 1218, and then
disconnecting the temperature sensor.
Once the connectors for solar modules and batteries are plugged in again,
the sensor is ”deregistered” and no faults are displayed (bus system).
14
6 Block diagram/wiring diagram
Y The block diagram and connection diagram are appended to the instruc-
tion manual of the solar charge regulator.
Date: 21.04.2015 822.213 MA / EN
Installation instructions for solar charge regulator LRM 1218
7 Initial use
7.1 Checks prior to initial use
Before starting up
Starting up the system
8.1 Mechanical details
Dimensions
Weight
Casing
8.2 Electrical details
Nominal voltage
Regulating principle
" Ensure that all the connections are correct (only for initial use).
" Ensure that the batteries or the electroblock are connected (depending
on operating mode).
" Connect the solar module to the solar charge regulator with the correct
polarity. The solar charge regulator is ready to use.
8 Technical details
135x48x90(WxHxDinmm)
360 g
Blue plastic (RAL 5010)
12 V
MPP regulator (Maximum Point Tracking)
Final charge voltage
Charge current
Solar charge regulator
consumption
Suitable batteries
Suitable solar modules
8.3 Environmental parameters
Operating temperature
Storage temperature
Humidity
CE
Dependent on setting, see operating instructions table
See operating instructions
For shaded solar module:
Approx. 4 mA from leisure area battery
Approx. 0.5 mA from starter battery
6-cell lead acid or lead gel batteries, rated 55 Ah or higher
F At least 36--cell modules
F Open circuit voltage 20 ... 32 V
F Maximum overall capacity of solar modules 275 Wp
-10 Cto+50C
-20 Cto+70C
Operation in dry environment only
CE marked
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9 Storage, packaging and transportation
Only transport and store the solar charge regulator if the packing is suitable
and ambient conditions are dry.
Date: 21.04.2015
15
Installation instructions for solar charge regulator LRM 1218
16
E
No part of this manual may be reproduced, translated or copied without express written permission.
Date: 21.04.2015 822.213 MA / EN
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