Switch-off time of the MSI 100/200 system
Leuze electronic
MSI 100/200
124
A 2
Switch-off time of the MSI 100/200 system
Required switch-off time
The required switch-off time is dependent on your safety application.
Actual switch-off time
The actual switch-off time for the safety function must always be less than the required switch-
off time.
The actual switch-off time for the safety function (t
SF
) is determined using the following for-
mula:
t
SF
= t
S
+ t
MSI200
(+ t
4RO
) + t
A
+ t
STOP
Figure A-1
Switch-off time for the safety function
Legend:
Maximum response time
t
S
Reaction time of the sensor/transducer
t
MSI200
Max. reaction time of the MSI 100/200 system
t
4RO
Max. reaction time of the MSI-EM200-4RO module
t
A
Reaction time of the actuator
t
STOP
Stopping time of the machine
t
SF
t
S
t
MSI200
(+t
4RO
)
t
A
t
STOP
The maximum guaranteed reaction time (t
MSI200
) of the MSI 100/200 system
is 30 ms. The
maximum reaction time t
MSI200
applies independent of the number of used safe extension
modules. An exception here is the MSI-EM200-4RO relay module.
When using one or more relay modules, the maximum reaction time of the MSI-EM200-4RO
module (t
4RO
) must be added once due to the mechanical release time of the relay. The
maximum reaction time t
4RO
is 50 ms.
