Operation
8.1 Operation
Installation and Operating Instructions SINAMICS G180
Operating Instructions, 02/2019, 4BS0751-007
127
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"Emerg. stop (NC) OFF3"
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Perform a controlled braking on the "fast stop brake ramp" with the command "Off3".
This command is initiated by software. The converter shuts down after braking. An
optional main contactor drops out. Acknowledge the converter before restarting using
the "Reset" command.
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The actuation via the control cable terminal block of "Fast stop (NC)" is made via an
NC contact.
This function is not safety-related in the sense of EN ISO 13849-1:2008. If you must
realize a safety-relevant function "Emerg. stop" according to IEC/EN 60204, stop
category one, then control this input and a main contactor via an appropriate safety
relay, e.g. type 3TK2827... from Siemens.
WARNING
Non-safety-related function "Emerg. stop (NC) OFF3"
If you use the "Fast stop (NC) OFF3" function without additional safety relay in the
input and for a main contactor, then the motor will not be shut down safely. This can
result in death, serious injury or material damage.
Use a safety relay for input and main contactor, e.g. type 3TK2827..., for a "Fast
stop" safety-related function according to IEC/EN 60204, stop category one.
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"int.ctr.inhib."
If you have realized the operating functions using controls, e.g. ON / OFF button, this
command causes a shutdown using controller lock without deactivating the controls. No
new ON command is necessary for the restart.
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"int. speed off"
This command has the same function as "int.ctr.inhib.", however cause a controlled
braking to zero speed. All controls are maintained.
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"Reversing"
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In the menu item "P-DRIVE DATA/Rotation =", if you enter the value "both", you can
then activate the command "Reversing". When activated, the converter changes the
rotating output field. In doing so, the motor is braked in a controlled way on the brake
ramp to zero speed. Afterwards, it is accelerated to the configured setpoint value in
the opposite direction. If the value "both" is not set, the drive goes to the configured
minimum speed.
–
If the drive does not start despite the presence of setpoint value and operating
commands, check whether the reverse function is activated and at the same time only
one rotation direction is enabled.
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"Motor potentiometer"
Similarly to a mechanical motor potentiometer, you can change the setpoint value using
the <up arrow> and <down arrow> buttons. The position of the motor potentiometer is
stored in the case of power failure.
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