Parameters Of The Channels; Sensor Supply; Input Delay - Siemens SIMATIC ET 200SP Manual

Parameters/address space
4.2 Explanation of parameters
4.2.4

Parameters of the channels

4.2.4.1

Sensor supply

Here you select one of the internal sensor supplies VS
The selection of an internal sensor supply is required for using the short circuit test.
See also
Time for short circuit test (Page 19)
4.2.4.2

Input delay

Function
To suppress stray interference, you can set an input delay for the entire channel or channel
pair.
Interference pulses whose pulse time is less than the set input delay (in ms) are suppressed.
Suppressed interference pulses are invisible in the PII.
A high input delay suppresses longer interference pulses, but results in a longer response
time.
The values available for the input delay depend on the "Startup time of sensors after short
circuit test" and the "Time for short circuit test" of the configured sensor supply.
Note
Due to the physical properties, there is a possibility of crosstalk between signals in the case
of long, unshielded signal lines (see section "Electromagnetic compatibility" in the system
manual ET 200SP distributed I/O system
(http://support.automation.siemens.com/WW/view/en/58649293)).
Adapt the input delay or use shielded signal lines in order to prevent possible passivation of
the fail-safe digital inputs and switch-off of the sensor supply.
See also
Technical specifications (Page 53)
Response times (Page 57)
24
to VS or an external sensor supply.
0 n
Digital input module F-DI 8x24VDC HF (6ES7136-6BA00-0CA0)
Manual, 07/2013, A5E03858068-01