Electrical connection
6
Wiring the ‘PV reduction’ digital outputs
Overvoltage when switching off electromagnetic relays
Damage to components!
Only use electromagnetic relays with a protective circuit (e.g. with a free-
wheeling diode) or semiconductor relays.
Tools:
•
2 relays
1
with the following properties:
•
Coil voltage: 24 VDC
•
Max. control current: 50 mA
•
1 make contact
Prerequisite :
✔
The PV inverter has a suitable interface for power control (e.g. an interface for a
ripple control receiver).
►
Wire the ‘PV reduction’ digital outputs as shown in Figure 31 (pg. 36).
►
Set the following values on the PV inverter:
Level
Max. active power
0
100 %
1
Feed-in limit of PV system in %
2
Half of feed-in limit of PV system in %
3
0%
The values for levels 1 and 2 depend on the individual feed-in limit of the PV system
in question. If feed-in power for the PV system is limited to 50% of the nominal
power, for example, the following values should be set: Level 1: 50%, level 2: 25%.
1
We recommend using the following relay:
Manufacturer: Finder | item no.: 483170240050 | item designation: 48 Series – Modular interface
KD-291 | Part no. 52187 | EN | X01
page 37 of 63
CAUTION
DANGER
WARNING
Notice
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