6.4 Handheld unit connection HT 8 with emergency stop override
The connection for handheld units (HGA) of the HT 8 has four function complexes:
• Two-channel version of enabling function
• Three-port Ethernet switch
• Connection of HT8
• Module address
WARNING
Danger to life if the acknowledgment button is not designed in accordance with DIN
standards
An acknowledgment button that is not designed in accordance with DIN standards may be
impaired in its function and may not be able to reliably stop dangerous motions in an
emergency, which may result in death or serious physical injury.
• Make sure that the acknowledgment button or the enabling control is designed according
to DIN EN 60204-1, section 9.2.6.3.
• Make sure that the acknowledgment button, when released or pushed down, stops
dangerous motions reliably.
6.5 Emergency stop override S11
• Implemented as pushbutton or keyswitch
• Pushbutton conrmed:
– "Emergency stop override" of the handheld unit connection > query via input S59
– Interruption of the power supply for the handheld unit connection when actuated
6
.UHLV
+7
.UHLV
6
.UHLV
+7
.UHLV
Figure 6-5 2-channel architecture of the emergency stop override contacts
With regard to their accidental failure, the contacts of the emergency stop override safety
function form a 2-channel architecture together with the emergency stop button on the HT 8.
In addition to the B10d value of the emergency stop button, the B10d value of S11 must also be
considered for the assessment in both emergency stop circuits.
Connecting
6.5 Emergency stop override S11
Machine Pushbutton Panel: MPP 464 IE H
Equipment Manual, 03/2021, A5E50810237B AA 55
To Next Page
Loading...
Need help?
General
