Siemens SINAMICS S150 NEMA, Operating Instructions Manual

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Functions, monitoring and protective functions
9.3 Drive functions
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
575
● When essential service mode ends, the converter returns to normal operation and
responds according to the currently pending commands and setpoints.
Note
Loss of warranty for an converter operated in the essential service mode
Should essential service mode apply, the customer can no longer lodge any claims for
warranty.
The essential service mode is an exceptional state, and is not suitable for continuous
operation.
The essential service mode can have the following effects:
• Exceptionally high temperatures inside and outside the converter
•
Open fire inside and outside the converter
• Emissions of light, noise, particles, gases.
The converter logs the essential service mode, and the faults that occur while in essential
service mode in a password-protected memory. This data is only accessible for the service
and repair organization.
WARNING
Active essential service mode and selection of "Safe Torque Off"
Using the essential service mode and simultaneously using a Safety Integrated function
can lead to the essential service mode being exited, and can therefore result in death or
severe injury, e.g. when a smoke extraction system fails.
The background is that the motor must continue to run during essential service mode as
long as possible and also must not be shut down by a Safety Integrated function.
• Do not use a Safety Integrated function simultaneously with the essential service mode.
Activating essential service mode
Essential service mode is activated through a continuous signal to the digital input, which is
set as a signal source via p3880.
Only the digital inputs on the Control Unit are permitted as signal sources:
● r0722.x (high active)
● r0723.x (low active)
x = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21