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48 Overview
available for both safe speed estimate and safety encoder feedback. The mute time
feature can be especially useful with the safe speed estimate because the estimate is
more prone to spurious trips caused by for example rapid changes in motor torque.
The mute time should be set as short as possible.
With safe speed estimate, there are two options to implement the mute time feature in
the FSO. By default, general mute time parameter
is used for all speed
functions. Starting from FSO rev. J, it is also possible to enable function-specific mute
times for limit hit situations with parameters
and
. With
safety encoder feedback, the general mute time parameter
is always
used. For more information, see section
.
Overview of safety functions
This section gives a short overview of the safety functions and gives references to the
detailed descriptions. For a description of the dependencies between the safety
functions, see section
Dependencies between safety functions
on page
.
Safe torque off (STO)
This safety function activates the STO function in the drive, this is, opens the STO
circuit in the drive. The motor coasts to a stop (stop category 0). See section
.
The FSO module activates the STO function and the motor stops, if:
• the motor speed reaches the SAR0, SAR1, or time monitoring (ie, SS1-t) limits, or
• the FSO detects an internal failure, or
• an encoder fault with FSE-31 occurs.
Safe stop 1 (SS1)
This safety function stops the motor safely by ramping down the motor speed to zero
speed (stop category 1). The FSO monitors the stop ramp either with the time or
ramp monitoring method (SS1 function types SS1-t and SS1-r, respectively). See
sections
•
SS1 with time monitoring (SS1-t)
•
SS1 with ramp monitoring (SS1-r)
Safe stop emergency (SSE)
This safety function stops the motor safely by coasting (stop category 0) or ramping
down (stop category 1) the motor speed to zero speed.
Содержание FSO-21
Страница 1: ... OPTIONS FOR ABB DRIVES FSO 21 safety functions module User s manual ...
Страница 4: ......
Страница 16: ...16 Safety instructions ...
Страница 34: ...34 Safety information and considerations ...
Страница 52: ...52 Overview ...
Страница 236: ...236 PROFIsafe ...
Страница 265: ...PROFIsafe 265 2 Select your CPU from the list 3 Install the FENA 21 GSDML file ...
Страница 275: ...PROFIsafe 275 20 In ABB_Drive FB add blocks DPRD_DAT and DPWR_DAT 21 Insert values to blocks ...
Страница 282: ...282 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Страница 286: ...286 PROFIsafe ...
Страница 304: ...304 Installation ...
Страница 400: ...400 Configuration ...
Страница 488: ...488 Verification and validation ...
Страница 506: ...506 Fault tracing ...
Страница 514: ...514 Maintenance ...
Страница 536: ...536 Technical data ...
Страница 538: ...538 Dimension drawings 3AXD50000018513 ...