Siemens SINAMICS G120P, Operating Instructions Manual

Page: 111 / 496

Electrical installation
4.9 Other connections
Inverter cabinet units
Operating Instructions, 12/2014, A5E32923362A
111
4.9.6 EMERGENCY OFF button installed in the cabinet door (option L45)
Description
The EMERGENCY OFF button with protective collar is integrated in the door of the cabinet
unit. The contacts of the button are connected to terminal block –X120. In conjunction with
options L57 and L60, EMERGENCY OFF Category 0 and EMERGENCY STOP Category 1
can be activated.
A braking unit may be necessary to achieve the required shutdown times.
Note
Pressing the EMERGENCY OFF button
When the EMERGENCY OFF button is pressed, the motor coasts to a standstill and the
main motor voltage is disconnected (in accordance with EN 60204-1 (VDE 0113)) in
conjunction with options L57 and L60. Auxiliary voltages, such as for anti-condensation
heating, may still be present. Certain sections of the inverter (e.g. the closed-loop controller
or any auxiliary equipment) also remain live. If all the voltages have to be completely
disconnected, the EMERGENCY OFF button must be integrated in a protection concept,
which must be implemented on the line side. For this purpose, an NC contact is installed at
terminal block -X120.
Connecting
Table 4- 37 Terminal block X120 –checkback contact "EMERGENCY OFF button in the cabinet
door"
Terminal Designation
1)
Technical data
1 NC 1 Checkback contacts of EMERGENCY OFF button in cabinet
door
Max. load current: 10 A
Max. switching voltage: 250 VAC
Max. switching capacity: 250 VA
Required minimum load: ≥1 mA
2
3
NC 2
2)
4
1)
NC: Normally-closed contact
2)
Factory setting in inverter for options L57 and L60
Max. connectable cross-section: 4 mm
2