ABB ACS880-17, Руководство пользователя

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28 Option description and instructions
Note : The Emergency stop, stop category 1 function uses the SS1 function of the FSO
module. The SS1 function uses SAR1 parameters to define the stop ramp. In some
situations (for example, in internal fault situations or due to another safety function) the
FSO module can activate the Safe stop emergency (SSE) function. The SSE function uses
SAR0 parameters to define the stop ramp.
If the FSO module activates the SSE function while the SS1 function is active, the SSE
function overrides the SS1 function. Therefore, SAR0 parameters are used instead of
SAR1 parameters to define the stop ramp. You must take this into account when you use
the SS1 function to implement an emergency stop (stop category 1).
A Safety function response time.
B Zero speed limit: Speed limit for activating the drive STO function. This is a user-defined value
(parameter
FSOGEN.52 Zero speed with encoder ).
Step Description
1 The user pushes the emergency stop button (this activates the SS1 function of the FSO module).
N
ote : The safety function request to the FSO module must be active for at least 20 ms.
2 The drive starts to decelerate the motor along the user-defined stop ramp. The FSO module starts
the ramp monitoring (SAR1 parameters
200.112 , SARx.21 , SARx.22 and SARx.02 ).
Case A: The motor speed goes below the zero speed limit within the user-defined stop ramp monitoring
window.
3a The motor peed goes below the zero speed limit (B). The FSO module activates the drive STO
function and stops the ramp monitoring.
The emergency stop indication lamp goes on. Note : You can
set an additional delay for the STO activation (parameter SS1.15 SS1-r ramp zero speed delay for
STO ).
4a The user releases the emergency stop button.
5a The user pushes the reset button (this resets the emergency stop circuit and removes the emergency
stop request from the FSO module).
Note : The pressing time of the reset button must be between 0.3 s...3 s.
6a The FSO module deactivates the STO function in the drive. The emergency stop indication lamp
goes off. The drive is ready for a restart.
Case B : The motor speed does not follow the user-defined stop ramp monitoring window.
3b The FSO module activates the FSO and drive STO functions and stops the ramp monitoring. The
motor coasts to a stop.
4b The user releases the emergency stop button.
5b The motor speed goes below the zero speed limit (B). The motor has stopped and the user can push
the reset button, that is, the acknowledgement of the STO function is possible. The emergency stop
indication lamp goes on.
6b The user pushes the reset button (this resets the emergency stop circuit and removes the emergency
stop request from the FSO module).
Note : The pressing time of the reset button must be between 0.3 s...3 s.
7b The FSO module deactivates the STO function in the drive. The emergency stop indication lamp
goes off. The user must reset the drive before drive is ready for a restart (this is because the FSO
module generates a fault to the drive after a limit hit [parameter
FSOGEN.62 STO indication safety
limit ]).