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Appendix
31.4 Connection examples for ripple control receivers
Grid operators have not agreed on a universal standard for ripple control receiver signals. As result, there
are several variations with the respective wiring and configuration in the Solar-Log™ firmware.
All of the examples refer to active power reduction. When ripple control receivers are used for reactive
power, they are configured in the same way.
Note!
The following connection examples are requirements from different grid operators.
The labels for the relays in the wiring diagram and in the Solar-Log™'s configuration
matrix can differ.
Warning!
Please note the specifications for the load of the ripple control receiver's relays. In
certain circumstances, the relays have to be connected to intermediate relays.
In any case, the inputs D_IN_X have to be supplied with the control voltage (5V
DC) from the Solar-Log™ (PM+ interface Pin 1 and 6).
Warning!
When connecting two ripple control receivers: If the ripple control receiver uses
binary signal coding, signal feedback via the ripple control receiver for the reac-
tive power must be prevented by fitting diodes.
Warning!
Emergency stop commands may not be processed via the Solar-Log™ These
commands have to function directly with the corresponding protection equip-
ment such as grid and plant protection, section switches and Q/U protection.
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