Siemens SIMATIC ET 200SP F-AI 4xI 0(4) 20mA 2-/4-wire HF Series User Manual

Parameters/address space
4.3 Explanation of parameters
Analog input module F-AI 4xI 0(4)..20mA 2-/4-wire HF (6ES7136-6AA00-0CA1)
24 Manual, 08/2018, A5E41448857-AB
4.3.2.3
Standard value
Function
If you have selected "1oo2 evaluation (max. SIL3/Cat.4/PLe)", you can choose for each input
channel pair which of the two F-CPU values is provided.
● "MIN": the lesser of the two values.
● "MAX": the greater of the two values.
During a discrepancy between the two input channels, the last valid standard value prior to
the occurrence of the discrepancy is made available to the F-CPU.
4.3.2.4
Discrepancy time
Function
If you have selected "1oo2 evaluation (max. SIL3/Cat.4/PLe)", you can enter the discrepancy
time for each channel pair here in milliseconds.
The discrepancy time does not start until the standard value is outside the assigned
tolerance window (relative or absolute). If the two redundant input channels of the channel
pair differ by more than the specified tolerance and for longer than the specified discrepancy
time but no longer than the duration of the maximum response time, the F-module detects a
discrepancy error and triggers a diagnostic interrupt. If the input channels fall below the
specified tolerance prior to expiration of the discrepancy time (input channels are no longer
discrepant), the discrepancy time is cleared and is restarted only when a new discrepancy is
detected.
You can find additional information about configuring the discrepancy analysis under
Parameter assignment of discrepancy analysis for 1oo2 evaluation (Page 27).
A discrepancy error is handled by the safety program in the same way as a channel fault.
Additional information is available in the SIMATIC Safety – Configuring and Programming
(http://support.automation.siemens.com/WW/view/en/54110126) manual.

Siemens SIMATIC ET 200SP F-AI 4xI 0(4) 20mA 2-/4-wire HF Series Specifications

General

Input channels	4
Wiring type	2-/4-wire
Series	SIMATIC ET 200SP
Supply voltage	24 V DC
Rated value (DC)	24 V
Power loss, typ.	1.5 W
Interference voltage suppression for interference frequency f1 in Hz	50/60 Hz
Diagnostics function	Yes
Galvanic isolation	Yes
Potential separation channels	Yes
Potential separation between the channels and backplane bus	Yes
Module type	AI
Safety integrity level	SIL 3
Connection method	Push-in terminals
Operating voltage	24 V DC
Weight	200 g
Input current range	0(4)..20 mA
Product type designation	F-AI 4xI 0(4)..20mA 2-/4-wire HF
Analog value generation for the inputs	16 bits
Resolution	16 bit
Integration time/resolution per channel	Configurable