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SIMATIC S7, DIGITAL INPUT SM 326, 8 DI; DC 24V, NAMUR, FAILSAFE NAMUR INPUTS FOR SIMATIC S7F SYSTEMS, UP TO CATEGORY 4 (EN954-1)/ SIL3 (IEC61508)/PLE (ISO13849), 1 X 40 PIN |
| Supply voltage |
| Rated value (DC) |
24 V |
| Input current |
| from load voltage L+ (without load), max. |
160 mA |
| from backplane bus 5 V DC, max. |
90 mA |
| Encoder supply |
| Number of outputs |
8 |
| Output voltage |
8.2 V DC |
| Power loss |
| Power loss, typ. |
4.5 W |
| Digital inputs |
| Number of digital inputs |
8; 8 (one-channel); 4 (two-channel) |
| Number of simultaneously controllable inputs |
| all mounting positions |
| — up to 40 °C, max. |
8; vertical setup |
| — up to 60 °C, max. |
8; horizontal set up |
| Input voltage |
| ● Type of input voltage |
DC |
| ● Rated value, DC |
in accordance with DIN 19234 or NAMUR |
| Input current |
| ● for signal "0", max. (permissible quiescent current) |
0.35 to 1.2 mA |
| ● for signal "1", typ. |
2.1 to 7 mA |
| Input delay (for rated value of input voltage) |
| for NAMUR inputs |
| — at "0" to "1", max. |
1.2 to 3 ms |
| — at "1" to "0", max. |
1.2 to 3 ms |
| Cable length |
| ● Cable length, shielded, max. |
200 m |
| ● Cable length unshielded, max. |
100 m |
| Interrupts/diagnostics/status information |
| Alarms |
| ● Diagnostic alarm |
Yes |
| Diagnostic messages |
| ● Diagnostic information readable |
Yes |
| Diagnostics indication LED |
| ● Fail-safe operation |
Yes |
| ● Group error SF (red) |
Yes |
| Ex(i) characteristics |
| Module for Ex(i) protection |
Yes |
| Maximum values of input circuits (per channel) |
| ● Co (permissible external capacity), max. |
3 µF |
| ● Io (short-circuit current), max. |
13.9 mA |
| ● Lo (permissible external inductivity), max. |
80 mH |
| ● Po (power of load), max. |
33.1 mW |
| ● Uo (output no-load voltage), max. |
10 V |
| ● Um (fault voltage), max. |
60V DC/30V AC |
| ● Ta (permissible ambient temperature), max. |
60 °C |
| Galvanic isolation |
| Galvanic isolation digital inputs |
| ● between the channels |
Yes |
| ● between the channels and the backplane bus |
Yes |
| ● between the channels and the power supply of the electronics |
Yes |
| Isolation |
| Isolation tested with |
500 V DC |
| tested with |
| ● Channels against backplane bus and load voltage L+ |
1500 V AC |
| ● Channels between each other |
1500 V AC |
| Standards, approvals, certificates |
| Highest safety class achievable in safety mode |
| ● acc. to DIN VDE 0801 |
AK 4 (one channel), AK 5 und 6 (two channel) |
| ● acc. to EN 954 |
4 |
| ● acc. to IEC 61508 |
SIL 2 (single-channel), SIL 3 (two-channel) |
| Use in hazardous areas |
| ● Test number KEMA |
99 ATEX 2671 X |
| Connection method |
| required front connector |
40-pin |
| Dimensions |
| Width |
80 mm |
| Height |
125 mm |
| Depth |
120 mm |
| Weights |
| Weight, approx. |
482 g |
| last modified: |
21.08.2014 |
