INSTALLATION
6
November 07 / Solar ChargeMaster 20, 40 / EN
4 INSTALLATION
WARNING
During installation and commissioning of
the Solar ChargeMaster, the Safety
Guidelines and Measures are applicable
at all times. See chapter 2 of this manual.
CAREFUL!
Wrong connections may cause damage to
the Solar ChargeMaster and other
equipment as well, which is not covered
by warranty!
4.1
Grounding the Solar System
Be aware that the Solar ChargeMaster has negative
grounding. See also figure 7. The negative terminals
of the Solar ChargeMaster controller are connected
internally and therefore have the same electrical
potential. If any grounding is required, always
connect this to the negative wires.
4.2
Things you need for installation
4.2.1 Tools:
A cross-head screw driver is all you need for the
strain relieves, the screw terminals and the fastening
screws for the housing. See also figure 5.
WARNING!
Use isolated tools!
4.2.2 Materials:
Part
Part nr.
Incl.
Solar Chargemaster SCM-N 20
131802000
Solar Chargemaster SCM-N 40
131804000
Temperature sensor
41500900
yes
PC Link USB (option)
21730400
no
4 screws 4,5 mm for wall
mounting
no
DC wiring
no
For advanced use you need the Solar ChargeMaster
data control software (downloadable from www.
Mastervolt.com)
Mind the recommended wire size, see this table.
Model
Length < 1m
Length 1-3
SCM20-N
4 mm²
6 mm²
SCM40-N
10 mm²
16 mm²
Place positive and negative wire close to each other
to minimize electromagnetic effects.
Mind that the screws have to carry also
the force applied by the wiring.
Mind the minimum required distance of 10
cm/ 4" to floor and ceiling, this is
necessary for ventilation reasons.
Installation step by step
1. Open the terminal lid. See figure 6.
2. Remove the screws from the strain relief and
take off the strain relief bridges. See figure 5 too.
3. Mount the controller to the wall. Use appropriate
screws for the wall material. Use screws with 4
to 5 mm shaft and max. 10 mm head diameter,
no counter sunk. See figure 5 for locating the
mounting holes.
Figure 6
4. Connect the wires leading to the battery with
correct polarity. See figure 7. To avoid any
voltage on the wires, first connect the controller,
then the battery.
Wrong polarity will cause a permanent warning
sound.
The controller has a built-in voltage drop
compensation which automatically compensates
battery wire voltage drops of up to 250 mV.
WARNINGS!
•
If the battery is connected with reverse polarity,
the load terminals will also have the wrong
polarity. Never connect loads during this
condition!
•
A fuse must be integrated in the positive lead to
the battery to protect any short circuit at the
battery wiring. Mind the recommendations of
your battery manufacturer.
•
The fuse must take the charge controller
maximum current: Solar ChargeMaster20: 30A,
Solar ChargeMaster40: 50A.
•
Solar panels provide voltage as soon as
exposed to sun light. Mind the solar panel
manufacturer’s recommendations in any case.
5. To avoid voltage at the load terminal, push the
button (see figure 5) shortly to shut off the load
output.
6. Connect the wires leading to the loads with
correct polarity. See figure 7.
7. Fasten the strain relieves.
