ABB FSO-21, User Manual

Page: 206 / 540

206 PROFIsafe
Unsig
ned16
(used
as
bits) 5 0 SF_end_ack_req Safety function ending acknowledgement
requested = 1,
no acknowledgement requested = 0.
Acknowledgement can be done via PROFIsafe.
Note: These values are indicative only and shall
not be used for safety-related decisions about
safety function states (there are other ways to
safely determine the state of a function, for
example, using SS1 to check octet 0 bit 4 and
then octet 5 bit 4: if safe state, then SS1 is
completed).
1 SF_end_ack_req_lo
cal Local safety function ending acknowledgement
requested = 1, no acknowledgement requested =
0.
Acknowledgement can only be done locally via
the FSO I/O if SF_end_ack_req is 0.
Note: These values are indicative only and shall
not be used for safety-related decisions about
safety function states (there are other ways to
safely determine the state of a function, for
example, using SS1 to check octet 0 bit 4 and
then octet 5 bit 4: if safe state, then SS1 is
completed).
2 STO_control_active The drive STO circuit is open.
Note : The motor may still be rotating.
3 Speed_value_valid Is the speed value valid (= 1) or not (= 0).
The speed value is defined in octets 6 and 7.
Note: Octet 2 bit 0 indicates the speed source
and octet 5 bit 3 indicates the validity of the
indicated speed source.
4 FSO_state Safe state = 1
Operational state = 0
5 FSO_mode.0
6 FSO_mode.1
7 Modulating The drive is modulating = 1
It is not known if the drive is modulating or not = 0
WARNING! The only safe way to make
sure that a drive is not modulating is to
activate drive STO. Drive STO can be
activated, eg, with FSO STO or POUS
function.
Type Octet Bit Name Description
FSO operating
mode FSO_mode.1 FSO_mode.0
Start-up 0 0
Running 0 1
Fail-safe 1 0
Configuration 1 1