SIMATIC S7-400
SIPLUS digital modules
SIPLUS SM 421 digital input module
6/62
Siemens ST 70 · 2013
■
Overview
• Digital inputs for SIMATIC S7-400
• For connection of switches and 2-wire proximity switches
(BEROs)
Note:
SIPLUS extreme products are based on Siemens Industry
standard products. The contents listed here were taken from the
respective standard products. SIPLUS extreme specific infor-
mation was added.
For technical documentation on SIPLUS, see:
www.siemens.com/siplus-extreme
■
Ordering data
Order No.
SIPLUS SM 421 digital input module
Order number 6AG1 421-1BL01-2AA0
Order No. based on 6ES7 421-1BL01-0AA0
Ambient temperature range -25 ... +60 °C
Conformal coating
Coating of the printed circuit boards
and the electronic components
Technical data
The technical data of the standard
product applies except for the ambi-
ent conditions
Ambient conditions
Relative humidity
100%, condensation/frost permissi-
ble. No commissioning if condensa-
tion present.
Biologically active substances,
compliance with EN 60721-3-3
Class 3B2 mold and fungal spores
(excluding fauna). The supplied plug
covers must remain in place over the
unused interfaces during operation!
Chemically active substances,
compliance with EN 60721-3-3
Class 3C4 incl. salt spray in accor-
dance with EN60068-2-52 (degree of
severity 3). The supplied plug covers
must remain in place over the unused
interfaces during operation!
Mechanically active substances,
compliance with EN 60721-3-3
Class 3S4 incl. sand, dust. The sup-
plied plug covers must remain in
place over the unused interfaces
during operation!
Air pressure (depending on the
highest positive temperature range
specified)
1080 ... 795 hPa
(-1000 ... +2000 m)
see ambient temperature range
795 ... 658 hPa
(+2000 ... +3500 m)
derating 10 K
658 ... 540 hPa
(+3500 ... +5000 m)
derating 20 K
SIPLUS SM 421
digital input modules
(extended temperature range and
medial exposure)
32 inputs, 24 V DC 6AG1 421-1BL01-2AA0
Accessories
See SIMATIC S7-400 digital
input modules, page 6/58
Kap_06_eng.book Seite 62 Donnerstag, 2. Mai 2013 4:16 16
© Siemens AG 2013
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