ABB AC500-S Safety User Manual page 311

4.6.6.9 SF_TwoHandControlTypeIII
Standards Requirements
EN 574: 1996 Clause 4, Table 1, Type III A; B; C.
5.1 Use of both hands / simultaneous actuation.
5.2 Relationship between output signal and input signals.
5.3 Completion of the output signal.
5.6 Reinitiation of the output signal.
5.7 Synchronous actuation.
6.2 Use of DIN EN 954-1 category 1.
6.3 Use of DIN EN 954-1 category 3. (Can only be realized by NO and NC switches
together with antivalent processing)
6.4 Use of DIN EN 954-1 category 4. (Can only be realized by NO and NC switches
together with antivalent processing)
ISO 12100-2: 4.11.4: Restart following power failure/spontaneous restart
2003
This function block provides the two-hand control functionality (see EN 574, Section 4 Type III. Fixed speci-
fied time difference is 500 ms).
This function block provides the two-hand control functionality according to EN 574, Section 4 Type III. If
S_Button1 and S_Button2 are set to TRUE within 500 ms and in correct sequence, then the S_TwoHandOut
output is also set to TRUE. The FB also controls the release of both buttons before setting the output
S_TwoHandOut again to TRUE.
30.03.2017
Configuration and programming
AC500-S Libraries > SafetyBlocks_PLCopen_AC500_v22.lib
AC500-S 311