ABB AC500-S Safety User Manual page 211

This function block is a safety-related function block for monitoring an emergency stop button.
This FB can be used for emergency stop switch off functionality (stop category 0), or - with addi-
tional peripheral support - as emergency stop (stop category 1 or 2).
Table 30: FB name: SF_EmergencyStop
Name Data type
VAR_INPUT
Activate BOOL
S_EStopIn BOOL
S_StartReset BOOL
S_AutoReset BOOL
Reset BOOL
VAR_OUTPUT
Ready BOOL
S_EStopOut BOOL
Error BOOL
DiagCode WORD
Note: The following requirements as defined in EN 418:1992 have to be fulfilled by the user:
● 4.1.4 After activation of the actuator, the emergency stop equipment shall operate in such a
way that the hazard is averted or reduced automatically in the best possible manner.
● 4.1.7 The emergency stop command shall override all other commands.
● 4.1.12 Resetting the control device shall only be possible as the result of a manual action on
the control device itself ... It shall not be possible to restart the machine until all control
devices which have been actuated are reset manually, individually and intentionally.
2020/06/19
Initial value Description, parameter values
FALSE Ä Table 16 "General input parameters" on page 192
FALSE Safety demand input.
Variable.
FALSE: Demand for safety-related response (e.g.,
emergency stop button is engaged).
TRUE: No demand for safety-related response (e.g.,
emergency stop button not engaged).
FALSE Ä Table 16 "General input parameters" on page 192
Ä Table 16 "General input parameters" on page 192
FALSE
Ä Table 16 "General input parameters" on page 192
FALSE
Ä Table 17 "General output parameters"
FALSE
on page 193
FALSE Output for the safety-related response.
FALSE: Safety output disabled.
Demand for safety-related response (e.g., emer-
gency stop button engaged, reset required or internal
errors active)
TRUE: Safety output enabled.
No demand for safety-related response (e.g., emer-
gency stop button not engaged, no internal errors
active).
FALSE Ä Table 17 "General output parameters"
on page 193
Ä Table 17 "General output parameters"
16#0000
on page 193
3ADR025091M0208, 12, en_US
Configuration and programming
AC500-S libraries > SafetyBlocks_PLCopen_AC500_v22.lib
211