Electrical installation | 5
KD-492 | 22320 | EN | X02
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5.6.4 Connecting the control signal cable
The control signal cable needs to be connected in different ways depending on the installa-
tion of the storage system in question.
Select the applicable option and connect the control signal cable of the Backup-Box as
described in the relevant section.
Option 1: no digital inputs/outputs.
If no signal cable is connected in the storage system and routed out, the control signal
cable must be routed into the storage system and connected there; see section Variant 1:
Connecting the control signal line in the storage system [P. 29].
Option 2: digital inputs/outputs via D-SUB.
XDIO
Illustration 18: Digital inputs/outputs (XDIO)
via D-SUB
If the signal cable is already connected to the stor-
age system via D-SUB connector, this signal cable
can be connected to the control signal cable of the
Backup-Box; see section Option 2: connecting the
control signal cable to the signal cable (D-SUB)
[P. 30].
Option 3: digital inputs and outputs via M-connector.
XDO
XDI
XDA
XDE
Illustration 19: Digital inputs and outputs via
M-connector
If the digital inputs
and
the digital outputs are con-
nected to the storage system via ‘M-connectors’.
these can be connected to the control signal cable
of the Backup-Box; see section Option 3: connect-
ing the control signal cable to the signal cable (M-
connector) [P. 31].
5.6.4.1 Variant 1: Connecting the control signal line in the storage system
The position of the connections specified in this section may vary depending
on the storage system model. Please note the relevant labelling for the indi-
vidual components in the storage system.
Connect the wires of the control signal cable to the following terminals in the storage
system:
Wire colour
Function
Connection to terminal
white
GND (earth)
Free terminal at terminal strip X1
brown
Supply voltage 24 V DC
Free terminal at terminal strip X1
yellow
DO for emergency shutdown
K20-X24:5
green
DI for grid detection (backup supply
active)
K20-X23:9
