Siemens SIMATIC S7-400H - Signal Modules for Redundancy

Using I/O on the S7-400H
7-15
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Signal modules for redundancy
The signal modules listed below can be used as redundant I/O. Pay attention to
the latest information about the use of modules available in the readme files and in
the SIMATIC FAQs at
http://www.siemens.com/automation/service&support under the
keyword “Redundant I/O”.
Table 7-1 Signal modules for redundancy
Modules
Order Number Remark
Local: Redundant dual-channel DI
DI 16 x 24 V DC Alarm 6ES7 421-7BH00-0AB0
DI 32 x 24 V DC 6ES7 421-1BL0x-0AA0
DI 32 x 120 V AC 6ES7 421-1EL00-0AA0
Distributed: Redundant dual-channel DI
DI 24 x 24 V DC 6ES7 326-1BK00-0AB0 F module in standard
operating mode
DI 8 x NAMUR [EEx ib] 6ES7 326-1RF00-0AB0 F module in standard
operating mode
DI 16 x 24 V DC, Alarm 6ES7 321-7BH00-0AB0
DI 16 x 24 V DC 6ES7 321-1BH02-0AA0
DI 32 x 24 V DC 6ES7 321-7BL00-0AA0
DI 32 x 24 V DC 6ES7 321-7BH01-0AB0
DI 8 x 230 V AC 6ES7 321-1FF01-0AA0
DI 16 x Namur 6ES7 321-7TH00-0AB0
DI 4 x Namur 6ES7 321-7RD00-0AB0
Local: Redundant dual-channel AI
AI 6x16Bit 6ES7 431-7QH00-0AB0
Distributed: Redundant dual-channel AI
AI 6 x 13 bits 6ES7 336-1HE00-0AB0 F module in standard
operating mode
AI 8 x 12 bits 6ES7 331-7KF02-0AB0
AI 8 x 16 bits 6ES7 331-7NF00-0AB0
AI 4 x 15 bits 6ES7 331-7RD00-0AB0
Local: Redundant dual-channel DO
DO 32 x 24V DC / 0.5A 6ES7 422-7BL00-0AB0
DO 16 x 120 / 230V AC / 2A 6ES7 422-1FH00-0AA0