20
Quick Installation Guide for Solar Power Inverter M50A_12s EU V4 EN 2018-10-24
Connecting digital inputs, external shutdown and dry contacts (optional)
Digital inputs and external shutdown
To control the active power, an external ripple control receiver
can be connected to the digital inputs
Terminal Des .
Short circuit
Assigned action
1
V1
-
-
2
K0
V1 + K0
External shutdown
(E-Power off, EPO)
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
Dry contacts
Event
Description
Disable
The function of the dry contacts is disabled
On Grid
The inverter is connected to the mains
Fan Fail
The fans are defective
Insulation
The insulation test has failed
Alarm
An error event message, fault message or
warning has been sent
Error
An error event message has been sent
Fault
A fault message has been sent
Warning
A warning message has been sent
The default setting for both contacts has been "Disabled".
After commissioning, an event can be assigned to the dry con-
tacts on the display, see “Dry contacts”, page 25
