Bosch Rexroth VM350 Manual page 33

3 609 929 B32/2008-09 | VM350
Hand-held tightening spindles:
S1
24V
CW / CCW
1 mm
S1
Fig. 6:
Switch S1:
We recommend the use of a position switch,
e.g. Telemecanique ZCK-M8. Connect the
signal "CW" to the digital input CW
(clockwise tightening) of the SE352 or to one
of the digital inputs FOxCW (Fastening
Operation No. x clockwise) of the KE350
communication unit. Inspect the S1 switch at
regular intervals according to the device
description. Safety-relevant cables that are
moveable must be short-circuit and cross-
fault proof.
The servo amplifier contactor is directly
integrated into the system's emergency OFF
circuit. The connection to the VM350 is
interrupted if the emergency OFF switch is
activated. System errors of error classes 3
and 4 may then occur. However, this
disruption is intentional, as the emergency
OFF switch is only activated in case of actual
danger.
23
24
S1
Bosch Rexroth AG
The PLC or the switch on the hand-held
nutrunner sends a Cw/Ccw signal. In this
case, the Cw/Ccw signals can also be sent
via a bus system.
The solution with separated emergency OFF
wiring is always preferred. It is required for
nutrunners without a measurement
transducer. If stricter safety measures must
be followed due to circumstances caused by
the system (e.g. special machinery
directives), the emergency OFF concept
must be taken into consideration separately,
in conjuction with the nutrunners.
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