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PROFIsafe 225
where
• Device_WD1 is an internal input device watchdog time
• F_WD_Time1 is the watchdog time for
receipt of the new valid telegram (from the
input device to the safety PLC)
• F_Host_WD is the watchdog time of the safety PLC
• F_WD_Time2 is the watchdog time for receipt of the new valid telegram (from the
safety PLC to the output)
• Device_WD2 is an internal output device watchdog time.
Instead of WCDT values, the calculation uses watchdog times. See
AC500-S Safety
User Manual
(3ADR025091M0207 [English]) for details.
For example, when using the ABB AI581-S as the input device, the SM560-S safety
PLC and the FSO module as the output device, SFRT can be calculated as follows:
SFRT = Devi 0.5 x F_WD F_H 0.5 x F_WD_Time2
+ Devi Longest
∆
T_WD
= 76.5 + 15 + 6 + 45.5 + 50 + 45.5 = 238.5 ms
where
• Device_WD1 = 76.5 ms
• F_WD_Time1 = 30 ms
• F_Host_WD = 6 ms
• F_WD_Time2 = 91 ms
• Device_WD2 = 50 ms
• Longest
∆
T_WD = Max (0.5 x F_WD_Time1; 0.5 x F_WD_Time2) = 45.5 ms
(all other used WCDT values are equal to their corresponding watchdog times).
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 ...