Festo EMCS-ST - Switch-Off Behaviour

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Festo — EMCS-ST — 2021-03b
Drive system
7 8
9
1
2
3
4
5
6
Fig. 10: Switch-on behaviour of the EMCS-ST
1
[Power] power ON (24 V DC)
2
[Logic] power ON (24 V DC)
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Initialisation
4
"DIO" master control
5
Power stage active (position controlled)
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LED C/Q
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Restart or logic voltage failure [Logic]
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(Initial) commissioning, load voltage failure
[Power] or mains failure [Logic] [Power]
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Warning: system not referenced
10.2.6
Switch-off behaviour
The switch-off behaviour of the EMCS-ST in the event of a voltage interruption depends on the type of
failure:
–
Logic voltage failure [Logic]
– Load voltage failure [Power]
– Power failure [Logic], [Power]
Timing: switch-off behaviour in the event of logic voltage failure
The diagram shows the switch-off behaviour of the EMCS-ST when the logic voltage fails or is discon-
nected.