Siemens SINAMICS SM150, Operating And Installation Instructions

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After closing the two control circuits of the 3TK2842 (releasing the mushroom pushbutton or
appropriate control signals on the terminal strip), to restart the drive requires an additional
second action of acknowledging the Safe Torque Off signal in the Control Unit. The drive can
be enabled by acknowledgment via an acknowledge button, which can be read-in via binary
input as well as via a higher-level automation (control platform). The acknowledge button must
be located in an area from which the operator can see into the system. The acknowledge
button is any button with a normally-open contact. It is connected via a 2-wire shielded control
cable with a wire cross section ≥ 0.5 mm
2
(e.g. Gore GSC-01-4489-00; 2 x AWG 20 [0.62
mm
2
]). Choice of cables and wiring system according to EN60204-1.
%(
; ;
3B
35
2
),
%8
6
'' ''
%XWWRQ
$FNQRZOHGJH
6DIH7RUTXH2II
([WHUQDO
%XWWRQ$FNQRZ
OHGJH
+LJKHUOHYHOFRQWUROOHU
RU
([WHUQDO
&RQWURO8QLW
&RQWURO8QLW
Figure 3-11 Connection possibility button – "Acknowledge Safe Torque Off" or "Acknowledge"
The line-side circuit breaker, e.g. Siemens vacuum circuit breaker SION 3AE series, must have
the following features:
● The circuit breaker must have a spring energy storage operating mechanism.
● The tripping time of the circuit breaker must not exceed 80 ms.
● The circuit breaker must be equipped with an undervoltage tripping function.
● The switch classes C1, E1 and M1 must at least meet the requirements of IEC 62271-100.
● The MTBF value must be ≤ 200 FIT.
● The circuit breakers must correspond to the following standards:
– IEC 60694: Common regulations for high-voltage switching device standards
– IEC 62271-100: High-voltage switching devices - Part 100: High-voltage AC circuit
breakers
Description
3.6 Description of options
SINAMICS SM150 6SL3845-7NN46-7AA0
Operating Instructions 04/2017
61