Connector pitch 5 mm, wire size 0.5 … 2.5 mm
2
(22…12 AWG)Safe torque off connection (XSTO)
Maximum tightening torque 0.45 N·m (4 lbf·in)
Input voltage range: -3…30 V DC
Logic levels: "0" < 5 V, "1" > 17 V.
Note: For the unit to start, both connections must be “1”. This
applies to all control units (including drive, inverter, supply, brake,
DC/DC converter etc. control units), but SIL/PL classified Safe
torque off functionality is only achieved through the XSTO con-
nector of the drive/inverter control unit.
Current consumption: 10 mA (continuous) per STO channel
(UCU-22…24). The number of parallel drive/inverter modules
does not have an effect on the current consumption.
Current consumption: 66 mA (continuous) per STO channel per
drive/inverter module (BCU)
EMC (immunity) according to IEC 61326-3-1 and IEC 61800-5-2
Connector pitch 5 mm, wire size 0.5 … 2.5 mm
2
(22…12 AWG)Safe torque off output (XSTO OUT)
Maximum tightening torque 0.45 N·m (4 lbf·in)
To STO connector of inverter module.
Connector: RJ-45Control panel connection (X13 [BCU])
Cable length < 100 m (328 ft) (BCU)Control panel connection (XPAN
[UCU-22…24])
Cable length < 50 m (164 ft) (UCU-22…24)
Termination by switch (XPAN TERM) (UCU-22…24)
Connector: RJ-45Ethernet connection (XETH [BCU])
This connection is not supported by the firmware (BCU)Fieldbus Ethernet connection with
internal switch (XETH1 and XETH2
[UCU-22…24])
Cable type: minimum requirement CAT5e (UCU-22…24)
Tool Ethernet connection with internal
switch (XETH3 and XETH4
[UCU-22…24])
Memory card type: SDHCSDHC memory card slot (SD CARD
[BCU])
Maximum memory size: 4 GB
Memory card type: microSDHC (minimum of class 4 speed grade)microSDHC memory card slot
(microSDHC CARD [UCU-22…24])
Supported memory size: 4 GB…32 GB
Real-time clock battery type: BR2032Battery
The terminals of the control unit fulfill the Protective Extra Low Voltage (PELV) requirements. The PELV
requirements of a relay output are not fulfilled if a voltage higher than 48 V is connected to the relay
output.
78 The control unit
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