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Installation and Operation Manual for RPI M50A
6 Installation
6.7.2 Dry contacts
When the fans fail, Dry contact 1 is closed.
When the inverter feeds into the grid, Dry contact 2 is
closed.
Dry contact 2Dry contact 1
6.7.3 Digital inputs and EPO
The digital inputs can be used to connect an external
ripple control receiver for controlling the active power.
1 2 3 4
5 6 7 8
Pin Design. Short Assigned action
1 V1 - -
2 K0 V1 + K0
EPO (Emergency
Power Off)
3 K1 V1 + K1
Set maximum active
power to 0%
4 K2 V1 + K2
Set maximum active
power to 30%
5 K3 V1 + K3
Set maximum active
power to 60%
6 K4 V1 + K4
Set maximum active
power to 100%
7 K5 V1 + K5 Reserved
8 K6 V1 + K6 Reserved
The relay for EPO can be set on the display to “nor-
mally open” or “normally closed”, see “8.9 EPO
(External Power Off)”, p. 67.
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