47
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 2
Dry 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
.
