Connectors X51, X52, X53
STO connectors of the mod-
ule. Must be connected to
24 V DC for the module to
start.
STO INX52
24 V DC for BCU and for
STO IN to enable the mod-
ule operation.
24V OUTX53
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.
￭ Fibre optic connectors
DescriptionName
BSFC
V50
V60
BFPS
V30
V40
BCU
V10
V20
Charging controller connection. Must be connec-
ted by the installer.
BSFC
Fan control connection (to fan control box). Con-
nected at the factory.
BFPS
Control unit connection. Must be connected by
the installer.
BCU
Operation principle and hardware description 19
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