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4.4.2
Connecting the PV generator
DANGER
Risk of fatal injury due to electric shock!
Severe injury or death will result if the live connections are touched. When there is solar radiation on the PV
generator, DC voltage will be present at the open ends of the DC cables.
›
Only touch the PV generator cables on the insulation. Do not touch the exposed ends of the cables.
›
Avoid short circuits.
›
Do not connect any strings with a ground fault to the device.
›
The device must not be operated with negatively or positively earthed PV modules.
Connecting the DC cable
↻ PV generator is dimensioned according to the performance characteristics of
the device.
1 Remove protective cap from the DC connection plugs required.
NOTE: For each plug connector pair, the power output can be connected in re-
lation to the string fuse size used.
2 Connect the PV generator to the DC plug connectors on the underside of the
device according to the polarity of the PV generator.
NOTE: Meet the requirements of protection class IP66 by closing the unused
plug connectors with protective caps.
» The device is connected to the PV generator.
4.5
Establishing equipotential bonding
NOTE
Depending on the local installation specifications, it may be necessary to earth the device with a second
ground connection. To this end, the threaded bolt on the underside of the device can be used.
↻ The device has been installed on the mount.
1 Strip the insulation from the equipotential bonding cable.
2 Furnish the stripped cable with an M8 ring cable lug.
3 Lay the cable for equipotential bonding onto the grounding point and attach
with an additional M8 nut and lock washer [
4 Check that the connected cable is fitted securely.
» The housing is included in the equipotential bonding.
4.6
Connecting the interfaces
4.6.1
Overview
DANGER
Risk of fatal injury due to electric shock!
Severe injuries or death may result from improper use of the interface connections and failure to observe
protection class III.
›
The SELV circuits (SELV: safety extra low voltage) can only be connected to other SELV circuits with pro-
tection class III.
CAUTION
Damage to the device from electrostatic discharge
Components inside the device can be damaged beyond repair by static discharge.
›
Observe the ESD protective measures.
›
Earth yourself before touching a component by touching a grounded object.
All interfaces are located on the communication circuit board (HMI board) inside the housing.
Page 10
W_13/
10 Nm ].
1
4
3
2
Fig. 9: Connection to plug connector
1
DC- plug connector
2
DC+ closure
3
DC- closure
4
DC+ plug connector
1
Fig. 10: Additional earthing point
1 Earthing bolt
B/ M/ MF/ L
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