Siemens S7-300 - Technical Data - SM 326; DI 8 X NAMUR

Digital modules
8.4 SM 326; DI 8 x NAMUR
Fail-safe signal modules
124 Installation and Operating Manual, 01/2010, A5E00085586-10
8.4.9 Technical data - SM 326; DI 8 x NAMUR
Overview
Technical data
Dimensions and Weight
Dimensions W x H x D (mm) 80 x 125 x 120
Weight Approx. 482 g
Module-Specific Specifications
Number of inputs
 Single-channel
8
 Dual-channel
4
Assigned address area
 In the I/O input area
6 bytes
 In the I/O output area
4 bytes
Cable length
 Shielded
200 m, maximum
 Unshielded
100 m, maximum
Front connectors 40-pin
Ignition protection type II 3 (2) G Ex nA [ib] IIC T4 to EN 60079-11,
EN 60079-0, EN 60079-15
Test number KEMA 99 ATEX 2671 X
Maximum achievable Safety Integrity Level in
safety mode
Single-channel Dual-channel
 According to IEC 61508
SIL 2 SIL 3
 According to EN 954-1
Category 3 Category 4
 According to ISO 13849:2006
PLd PLe
Fail-safe performance characteristics SIL 2 SIL 3
 low demand mode (average probability of
failure on demand)
< 1.00E-04 < 1.00E-05
 high demand / continuous mode
(probability of a dangerous failure per hour)
< 1.00E-08 < 1.00E-09
Voltages, Currents, Potentials
Rated supply voltage of the electronic system
and sensors L +
24 V DC
 Reverse polarity protection
Yes
 Power failure ride-through
5 ms
Number of simultaneously controllable inputs
 Horizontal installation up to 60 °C
8
 Vertical installation up to 40 °C
8