Siemens SIMATIC S7-400H System Manual page 135

Module
DI 16xNamur
Use with non-redundant encoder
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•
•
DI 24xDC 24 V
F module in standard operation
DI 8xNAMUR [EEx ib]
F module in standard operation
Central: Redundant DO dual-channel
DO 32xDC 24V/0.5A
A definite evaluation of the diagnostic information "P short-circuit" and "M short-circuit" is not possible.
DO 16xAC 120/230V/2A
Distributed: Redundant DO dual-channel
DO8xDC 24 V/0.5 A
A definite evaluation of the diagnostics information "P short-circuit" and wire break is not possible.
Deselect these individually in your configuration. Since the module can only be operated in
module-oriented redundancy, the diagnostic messages "M short-circuit" and " L+ - monitoring"
cause a module error.
DO8xDC 24 V/2 A
DO32xDC 24 V/0.5 A
DO8xAC 120/230 V/2 A
DO 16x24 V/10 mA [EEx ib]
You cannot use the module for applications in hazardous areas in redundant mode.
DO 16xDC 24 V/0.5 A
•
•
DO 10xDC 24 V/2 A as of product version 3
The inputs and outputs must have the same address.
S7-400H
System Manual, 09/2007, A5E00267695-03
Equipotential bonding of the encoder circuit should always be at one point only (preferably
encoder negative).
Operate the two redundant modules on a common load power supply.
When selecting encoders, compare their properties with the specified input characteristics.
Remember that this function must always guaranteed, regardless whether you are using one or
two inputs. Example of valid values for NAMUR encoders: for "0" current > 0.7 mA; for "1" current
> 4.2 mA.
The equipotential bonding of the load circuit should always be at one point only (preferably load
minus).
Diagnostics of the channels is not possible.
Using I/Os in S7-400H
10.5 Connecting redundant I/Os
Order number
6ES7321–7TH00–0AB0
6ES7326–1BK00–0AB0
6ES7326–1RF00–0AB0
6ES7422–7BL00–0AB0
6ES7422–1FH00–0AA0
6ES7322–8BF00–0AB0
6ES7322–1BF01–0AA0
6ES7322–1BL00–0AA0
6ES7322–1FF01–0AA0
6ES7322–5SD00–0AB0
6ES7322–8BH01–0AB0
6ES7326–2BF01–0AB0
135