Digital modules
8.3 SM 326; DI 24 x DC 24V
Fail-safe signal modules
104 Installation and Operating Manual, 01/2010, A5E00085586-10
Technical data
Input current
For "1" signal
Typ. 10 mA
Input characteristic According to IEC 61131-2 Type 1
Connection of 2-wire BERO Supported if parameter "with short-circuit test" =
"no"
Permissible quiescent current 2 mA, maximum
Time, Frequency
Internal signal preparation time (without input
delay) for
Min./max.
Standard mode
6 ms / 22 ms
Safety mode SIL2/Cat.3/PLd
10 ms / 23 ms
Safety mode SIL3/Cat.4/PLe
10 ms / 22 ms
Input delay
For "0" after "1"
2.1 ms to 3.4 ms
For "1" after "0"
2.1 ms to 3.4 ms
Acknowledgment time
In safety mode with 1oo1 evaluation of the
sensors
Max. 29 ms
In safety mode with 1oo2 evaluation of the
sensors
Max. 29 ms
Minimum sensor signal duration see table
Minimum duration of sensor signals for
reliable detection by SM 326; DI 24 x DC 24 V
in
chapter "Sensor and Actuator Requirements for
F-SMs in Safety Mode (Page 47)".
Note
The maximum cable lengths currently specified in this manual ensure against functional
impairment, even without more precise examination of the boundary conditions. If the
boundary conditions, such as EMC, cable type, cable routing, etc. are examined more
closely, longer cables can be used for all F-SMs.
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