ABB AC500-S Safety User Manual page 273
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Also See for AC500-S:
- Safety user manual (452 pages) ,
- Application note (24 pages) ,
- System manual (119 pages)
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Configuration and programming
AC500-S libraries > SafetyBlocks_PLCopen_AC500_v22.lib
The SF_EnableSwitch FB evaluates the signals of an enable switch with three positions.
The SF_EnableSwitch FB supports the suspension of safeguarding (EN 60204 Section 9.2.4)
using enable switches (EN 60204 Section 9.2.5.8), if the relevant operating mode is selected
and active. The relevant operating mode (limitation of the speed or the power of motion, limita-
tion of the range of motion) must be selected outside the SF_EnableSwitch FB.
The SF_EnableSwitch FB evaluates the signals of an enable switch with three positions
(EN 60204 Section 9.2.5.8).
The S_EnableSwitchCh1 and S_EnableSwitchCh2 input parameters process the following
signal levels of contacts E1 to E4:
Fig. 108: Switch positions
The signal from E1+E2 must be connected to the S_EnableSwitchCh1 parameter. The signal
from E3+E4 must be connected to the S_EnableSwitchCh2 parameter. The position of the
enable switch is detected in the FB using this signal sequence.
The transition from position 2 to 3 can be different from shown here.
The switching direction (position 1 => position 2/position 3 => position 2) can be detected in the
FB using the defined signal sequence of the enable switch contacts. The suspension of safe-
guarding can only be enabled by the FB after a move from position 1 to position 2. Other
switching directions or positions may not be used to enable the suspension of safeguarding.
This measure meets the requirements of EN 60204 Section 9.2.5.8.
In order to meet the requirements of EN 60204 Section 9.2.4, the user shall use a suitable
switching device. In addition, the user must ensure that the relevant operating mode (EN 60204
Section 9.2.3) is selected in the application (automatic operation must be disabled in this oper-
ating mode using appropriate measures).
The operating mode is usually specified using an operating mode selection switch in conjunc-
tion with SF_ModeSelector FB and SF_SafeRequest or SF_SafelyLimitedSpeed FB.
2020/06/19
3ADR025091M0208, 12, en_US
273
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