Siemens SIMATIC S7-400H System Manual page 193

Library V5.x Library V4.x Library V3.x Module
X
X
X
X X
S7-400H
System Manual, 03/2012, A5E00267695-11
X
AI 6xTC 16Bit iso, 6ES7331-7PE10-0AB0
Notice: These modules must only be used with redundant encoders.
You can use this module with Version 3.5 or higher of FB 450 "RED_IN" in the
library "Redundant IO MGP" and Version 5.8 or higher of FB 450 "RED_IN" in
the library "Redundant IO CGP" V50.
Observe the following when measuring temperatures by means of
thermocouples and parameterized redundancy:
The value specified in "Redundancy" under "Tolerance window" is always based
on 2764.8 °C. For example, a tolerance of 27 °C is checked if "1" is entered, or a
tolerance of 138 °C is checked if "5" is entered.
A firmware update is not possible in redundant mode.
Online calibration is not possible in redundant mode.
Use in voltage measurement
The "wire break" diagnostics function in HW Config must not be activated

when operating the modules with thermocouples.
Use in indirect current measurement
Due to the maximum voltage range +/- 1 V, the indirect current measurement

can be carried out exclusively via a 50 ohm resistor. Mapping that conforms
to the system is only possible for the area +/- 20 mA.
X AI 4x15Bit [EEx ib]
You cannot use the module for applications in hazardous areas in redundant
mode.
It is not suitable for indirect current measurement.
Use in direct current measurement
Suitable Zener diode: BZX85C6v2

Load capability of 4-wire transmitters: RB > 325 ohms

determined for worst case: 1 input + 1 Zener diode at an S7 overshoot value
24 mA to RB = (RE * I
Input voltage for 2-wire transmitters: Ue–2w < 8 V

determined for worst case: 1 input + 1 Zener diode at an S7 overshoot value
24 mA to Ue–2w = RE * I
Note: You can only connect 2-wire transmitters with a 24 V external supply or 4-
wire transmitters. The internal power supply for transmitters cannot be used in
the circuit shown in figure 8-10, because this outputs only 13 V, and thus in the
worst case it would supply only 5 V to the transmitter.
X AI 6x13Bit
F module in standard mode
X AI 8x0/4...20mA HART
A firmware update is not possible in redundant mode.
Online calibration is not possible in redundant mode.
Distributed I/O Device ET 200M; HART Analog Modules
See
13.4 Connecting redundant I/O to the PROFIBUS DP interface
U )/I
max + z max
+ U
max z max
Using I/Os in S7–400H
Order number
6ES7331-7PE10-0AB0
6ES7331-7RD00-0AB0
max
6ES7 336–1HE00–0AB0
6ES7 331–7TF01-0AB0
manual
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