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Functionality
The contacts 1 and 4 of the status signalling contact are used to monitor the external
input (see 4.6 Electrical connection). When there is phase voltage between contact 1 and
contact 4, the grid relays K1 and K2 are closed (see 3.1 Block diagram). If phase voltage
is not present between contacts 1 and 4, the grid relays are open and the inverter discon-
nects from the grid.
Contact 1 - contact 4
Grid relays K1 and K2
Phase voltage (L1, L2, or L3) present
closed
no phase voltage present
open
Connecting conditions
See 4.6.4 Status signalling contact
Pinout
Contact
Description
1
Phase (L1, L2 or L3)
2
Not used
3
Not used
4
Neutral conductor N
4.6.6 Communications sockets
The SolarMax MT series inverters have two RJ45 sockets for data communication within
a MaxComm network:
n
The left-hand RJ45 socket is only an RS485 interface. The RS485 interface is used for
connections to other SolarMax inverters or accessories with MaxComm interface.
n
The right-hand RJ45 socket can be used both as an RS485 and as an Ethernet inter-
face; the desired function can be toggled in the “Settings” menu. The Ethernet inter-
face is used for connecting an inverter directly to a PC or to MaxWeb xp. However, if
both sockets are configured as RS485 interfaces, a network containing several RS485
nodes can be set up.
Summary of Contents for 10MT2
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