Bosch Rexroth Tightening System 350 - Page 532

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System 350 | 3 608 878 300/2019-03
7.2.6.5 SB356 system box mains connection
The mains connection is implemented via the screw terminals on the mains switch (see Figure 7–7 and
Table 7–4).
The cable fitting (Ø 8 mm – 13 mm) is located in the system box base.
The SB356 mains connection must be 3-phase (4 x 2.5 mm
2
) and include a PE wire. To avoid short
circuits and ground leakage, a 3-phase fuse (16 A) must be provided.
Fig. 7–7: SB356 mains connection terminals
Voltage selection The voltage selection terminals in the SB356 allow for operating the system box in a voltage range of
380V to 500V.
The system box is set to 400 V at the time of delivery (see Figure 7–8).
The X1N4 interface partitions represent a logical separation of the 3 possible connection groups (G1 to
G3) (see Figure 7–8).
Table 7–4: Description of the mains connection terminals on the SB356
Signal Description/function Voltage/current
PE PE wire PE potential
1L1 L1 mains connection 380 – 500 V~ / 4.6 – 3.5 A
3L2 L2 mains connection 380 – 500 V~ / 4.6 – 3.5 A
5L3 L3 mains connection 380 – 500 V~ / 4.6 – 3.5 A
1L1 3L2 5L3
PE
NOTICE
Damages caused by varying voltages
Varying mains voltages will damage the control and power electronics.
 All three mains phases must be connected with the same voltage value!
NOTICE
Varying assignment of mains connections
Damages to the control and power electronics
 Only use the voltage selection terminals from the G1, G2, and G3 groups for the mains
connection.
 Do not assign the device connection.