Siemens 6ES7321-7TH00-0AB0 Digital Input Module
MPN6ES7321-7TH00-0AB0
End of Life
SIMATIC S7/PCS7 Digital input SM 321, 16 DI; 24 V DC, 1 x 40-pole, diagnostics-capable, for contacts (wired/ not wired), NAMUR encoder, 3/4-wire Bero, with chatter monitoring; Pulse extension, open-circuit detection Interface module IM 153-2 HF or IM 153-4 HF possible
$836.93 – $1,265.00Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jun 2026
Specifications
I/O
| Parameter | Value |
|---|---|
| Digital inputs | 16 |
Electrical
| Parameter | Value |
|---|---|
| Rated value (DC) | 8.2 V; 8.2V/18V |
| Current for signal "1" (typ.) | 10 mA; for NAMUR: 2.1 to 7 mA, for 10k ohm/47k ohm contact: typical 10mA, for 4 wire BEROs: typical 10 mA |
| Max. | 60 °C |
| Power loss (typ.) | 11 W |
| Current consumption from backplane bus (5 V DC), max. | 100 mA |
| Current consumption from load voltage L+ (no load), max. | 100 mA |
| Short-circuit protection | Yes; Electronic |
| Reverse polarity protection | Yes |
| Isolation test voltage | 600 V DC |
| Isolation: between channels | Yes |
| Isolation: channels to backplane bus | Yes |
| Max. cable length, shielded | 400 m; max. 200m with 8.2 V sensor, max. 400m with 18 V sensor |
| Max. cable length, unshielded | Not permitted |
Performance
| Parameter | Value |
|---|---|
| Diagnostic alarm | Yes |
| Diagnostics function | Yes |
| Group fault indicator (SF, red LED) | Yes |
Environmental
| Parameter | Value |
|---|---|
| Min. | 0 °C |
Mechanical
| Parameter | Value |
|---|---|
| Height | 125 mm |
| Width | 40 mm |
| Depth | 120 mm |
MPN
6ES7321-7TH00-0AB0