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Technical data
Mounting and Operating Instructions CEAG Central Battery System ZB-S 40071860179 (L) November 2018 www.ceag.de
4.4.15 Bus-Technology according to RS 485
or CG-S-Bus
An RS485 bus is used for data communication with
external bus modules (3-PM-IO Module or TLS).
A connection to a BMS can be done with the CG-S bus.
The conductors of the RS485 bus line must be connected
to the connection points RS485 A, RS485 B, +24V OUT
and -24V OUT of the ZB-S connection terminals.
NOTE
O
O
A parallel switching of data cables is not allowed and
does not lead to an extension of the acceptable cable
length.
O
O
For power supply of the modules conductors within one
screening can be switched in parallel (for calculation
compare the catalogue of the system ZB-S).
ATTENTION!
Bus Topology: linear, double terminated (no spur lines
allowed). The absolutely essential terminating resistors are
included in the control cabinet.
O
O
Cable type (minimum requirement): IY(ST)Y 4 x 2 x 0.8 mm
(Twistet Pair, screened) – the screen of the cables must be
connected to the SE-clamps of each module and it is allowed
to be earthed in the control cabinet ZB-S.
O
O
The conductor cross-section needed for the 24V bus voltage
will depend on the line length and the number of bus modules
(U
min
= 19 V DC, refer to the operationg instructions for the
3-PM-IO Module and TLS-Bus-Module)
O
O
Only one pair of conductors is allowed to be used as data line
within the screen - it is not acceptable to bundle several data
cables within one screened cable!
O
O
The RS485 bus is not designed as a SELV system. The bus
components must be handled as if mains supply (240 V) is
applied.
CG-S-Bus
RS485-Bus
CEAG 3-PM-IO 1
