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Connectors X51, X52, X53
￭
Fibre optic connectors
V50
BSFC
V60
V30
BFPS
V40
V10
BCU
V20
Operation principle and hardware description 19
X52
STO IN
X52
X53
24V OUT
X53
Note: The Safe torque off (STO) safety function is
only implemented in inverter units. Therefore, the
STO function cannot be used in supply, rectifier,
DC/DC converter and brake units. In these units,
de-energizing any connection of STO IN (X52)
connector stops the unit. Note that this stop is not
safety related and must not be used for safety
function purposes.
Name
Description
BSFC
Charging controller connection. Must be connec-
ted by the installer.
BFPS
Fan control connection (to fan control box). Con-
nected at the factory.
BCU
Control unit connection. Must be connected by
the installer.
STO IN
STO connectors of the mod-
ule. Must be connected to
24 V DC for the module to
start.
24V OUT
24 V DC for BCU and for
STO IN to enable the mod-
ule operation.
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