ABB ACS880 User Manual page 37

limit during monitoring. The FSO module can activate the SSE function in internal fault
situations.
Index Name
SSE.13 SSE function
SSE.14 SSE monitoring
method
SSE.15 SSE delay for STO
Example value Description
Immediate STO or Sets the type of the SSE function.
Emergency ramp
Immediate STO: The FSO module activates
the inverter unit STO function immediately
after the SSE request.
Emergency ramp: The FSO module deceler-
ates the motor to zero speed, and then ac-
tivates the inverter unit STO function. SAR0
parameters define the deceleration ramp.
For more information, refer to the FSO
module user's manual. Zero speed is
defined by parameter FSOGEN.51 Zero
speed without encoder.
For option +Q966, ABB sets this parameter
to value Immediate STO at the factory. Ad-
just the default value when necessary.
Ramp or Time Sets the method used for the SSE emer-
gency ramp monitoring. This parameter is
relevant only if parameter SSE.13 SSE
function is set to Emergency ramp.
Ramp: SAR0 parameters define the emer-
gency ramp and monitoring limits. Refer to
SAR0 ramp settings (page
Time: Parameter 200.102 SAR0 ramp time
to zero defines the emergency ramp and it
is monitored with parameter SSE.15 SSE
delay for STO.
For option +Q966, ABB sets this parameter
to value Ramp at the factory. Adjust the de-
fault value when necessary.
20000 ms Sets the SSE monitoring time after which
the FSO module activates the inverter unit
STO function after the SSE request.
This parameter is relevant only if parameter
SSE.13 SSE function is set to Emergency
ramp, time monitoring is used (SSE.14 SSE
monitoring method is set to Time), and the
motor speed does not follow the ramp.
Note: This delay must be considered when
the total response time for the safety func-
tion is defined.
Parameter settings 37
38).