Siemens SINAMICS G150 Operating Instructions Manual page 539

Note
Emergency operation and Safety Integrated
The use of the essential service mode with the simultaneous use of a Safety Integrated
function can lead to an undesirable state of the essential service mode.
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
Note
Emergency operation is not fully functional until one of the following requirements is met:
• p3880 is wired offline; a POWER ON of the CU must then be performed after the
download to the device.
• p3880 is wired online.
Setpoint source for essential service mode
When essential service mode is activated, the setpoint which is set via p3881 is switched to:
● p3881 = 0: Last known setpoint (r1078 smoothed) - factory setting
● p3881 = 1: Fixed speed setpoint 15 (p1015)
● p3881 = 3: Fieldbus
● p3881 = 5: TB30/TM31 analog input
● p3881 = 6: Enable of response OFF1
● p3881 = 7: Enable of response OFF2
When using the analog setpoint value from TB30/TM31 (p3881 = 5) the setpoint is used that
is set via p3886.
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
Functions, monitoring, and protective functions
9.2 Drive functions
539