3 608 878 300 Tightening Technology | Bosch Rexroth AG 75/641
System 350 | 3 608 878 300/2019-03
4.2.4.2 Modular system
System boxes/card rack fields
Tightening system components must be installed in a system box or card rack field for operation. This
creates the connection between the units and provides the units with electric power.
Servo amplifier, control unit, communication unit
Servo amplifier Determining the necessary size of the tightening spindle or using an ErgoSpin hand-held nutrunner results
in the selection of the corresponding servo amplifier together with table 4–8:
Control units SE352 or SE352M control units can be inserted into a corresponding slot in SB356 or BT356.
The SE352M control unit has one unoccupied slot. An IM24V interface module can be inserted into this
slot.
Table 4–7: Characteristics of system boxes/card rack fields
Characteristic SB356 BT356
Maximum number of channels per
BT/SB
6 (5 + KE) 6 (5 + KE)
Total number of channels 40 40
Protection type/class IP 54 IP 20
Dimensions Width 600 mm 483mm
Height 510 mm 310 mm (7 HU)
Depth 470 mm 381 mm
Weight (empty) 55 kg 7 kg
Due to the data transmission times, Rexroth recommends connecting a maximum of 8 tightening channels
in single-channel operation within a tightening system.
Example Two card racks/system boxes (total of 6 slots with KE) are needed for the 5tightening channels in the
example on page 65, as the power consumption of the 5tightening channels (225 A) exceeds the
permissible power consumption of 140 A for a system box or card rack. A combination of two SB356
system boxes, networked via network couplers, is a possible solution. The alternative would be two
BT356 card rack fields in a control cabinet.
Table 4–8: Assignment of servo amplifiers to sizes
ErgoSpin hand-held nutrunner or tightening
spindle
Appropriate servo amplifier
Size 2 tightening spindle LT353
Size 3 tightening spindle LT353 or LT354
Size 4 tightening spindle LT354 or LT355
Size 5 tightening spindle LT355
Any size tightening spindle LTS350D
ErgoSpin hand-held nutrunner LTU350/1 and/or LTE350D
Example Size 5 spindles are used in the tightening cell example on page 65. LT355 servo amplifiers are required
for this.
Example
The tightening cell in the example on page 65 has five channels. They are controlled centrally via a
communication unit. This is why no interface modules are needed in the controllers in this case.
To Next Page
Loading...
