User manual

6.6 StecaLink master connection (MPPT 6000-M only)
NOTICE!
– The StecaLink master connection is an RS-485 communication interface using a proprietary
bus protocol.
–
The StecaLink master connection allows the connection of subordinate communication
partners.
– The StecaLink slave devices connected to the StecaLink master connection are controlled by
the MPPT 6000-M functioning as the communication master device.
– Devices such as PA HS400 external current sensors or the MPPT 6000-S can be connected
to the StecaLink master connection.
– A standard RJ45 network cable (CAT-5 Patch cable, 1:1) is used for connecting StecaLink
communication bus members.
– A termination plug for the StecaLink communication bus is supplied with the MPPT 6000-
M. The last free StecaLink slave connection in the communication network connected to
the StecaLink master must be terminated.
– Only one StecaLink master may be connected to a StecaLink communication network.
– The maximum number of StecaLink slaves is limited. A maximum of 32 devices can be
connected to the StecaLink master connection of a single MPPT 6000-M.
– The MPPT 6000-M can control a maximum of 8 PA HS400 devices and 22 MPPT 6000-S
devices.
– Each slave must have its own unique address within a range of 1 to 99. No duplicate
addresses may be present. Set the address of the slave according to the slave manual.
– The StecaLink master connection is galvanically isolated from the power unit.
– The maximum length of the entire bus cabling should not exceed 25 m.
– The MPPT 6000-M:
– has 1 StecaLink master connection,
– has 2 StecaLink slave bus connections,
– is always the master at the StecaLink master connection.
– The MPPT 6000-S:
– does not have a StecaLink master connection.
756.404 | Z01 | 16.06 48