SIPLUS S7-300 SM 321 20-pole based on 6ES7321-7BH01-0AB0 with conformal coating, -25ÔǪ+70 -¦C, digital input isolated 16 DI; 24 V DC, 1x 20-pole, hardware interrupt, diagnostics, suitable for isochronous-mode operation More
SIPLUS S7-300 SM 321 20-pole based on 6ES7321-7BH01-0AB0 with conformal coating, -25ÔǪ+70 -¦C, digital input isolated 16 DI; 24 V DC, 1x 20-pole, hardware interrupt, diagnostics, suitable for isochronous-mode operation More
SIPLUS S7-300 SM 321 20-pole based on 6ES7321-7BH01-0AB0 with conformal coating, -25…+70 °C, digital input isolated 16 DI; 24 V DC, 1x 20- pole, hardware interrupt, diagnostics, suitable for isochronous mode
Need to buy or repair this part? We will check replacement part availability and the options for diagnosing and repairing your faulty unit.
24 VSupply voltage / Load voltage L+ / Rated value (DC)
20.4 VSupply voltage / Load voltage L+ / permissible range, lower limit (DC)
28.8 VSupply voltage / Load voltage L+ / permissible range, upper limit (DC)
Application and selection
Compare the complete order number and specifications below with the original part and machine wiring. Check the design, interfaces, supply voltage or connection method as applicable to this product.
Technical specifications
Manufacturer
Siemens
Order number
6AG1321-7BH01-2AB0
General information / based on
6ES7321-7BH01-0AB0
General information / Product function / Isochronous mode
Yes
Supply voltage / Load voltage L+ / Rated value (DC)
24 V
Supply voltage / Load voltage L+ / permissible range, lower limit (DC)
20.4 V
Supply voltage / Load voltage L+ / permissible range, upper limit (DC)
28.8 V
Supply voltage / Load voltage L+ / Reverse polarity protection
Yes
Input current / from load voltage L+ (without load), max.
90 mA
Input current / from backplane bus 5 V DC, max.
130 mA
Encoder supply / Number of outputs
2
Encoder supply / Type of output voltage
L+ (-2.5 V)
Encoder supply / Short-circuit protection
Yes; Electronic
Encoder supply / additional (redundant) feed
Yes
Encoder supply / Output current / Rated value
120 mA
Encoder supply / Output current / permissible range, lower limit
0 mA
Encoder supply / Output current / permissible range, upper limit
150 mA
Power loss / Power loss, typ.
4 W
Digital inputs / Number of digital inputs
16
Digital inputs / Input characteristic curve in accordance with IEC 61131, type 2
Yes
Digital inputs / Number of simultaneously controllable inputs / horizontal installation / up to 60 °C, max.
16
Digital inputs / Number of simultaneously controllable inputs / vertical installation / up to 40 °C, max.
16
Digital inputs / Input voltage / Type of input voltage
DC
Digital inputs / Input voltage / Rated value (DC)
24 V
Digital inputs / Input voltage / for signal "0"
-30 to +5 V
Digital inputs / Input voltage / for signal "1"
13 to 30V
Digital inputs / Input current / for signal "1", typ.
7 mA
Digital inputs / Input delay (for rated value of input voltage) / for standard inputs / parameterizable
Yes; 0.1 / 0.5 / 3 / 15 / 20 ms
Digital inputs / Encoder connection / Fixed current limitation for wire-break monitoring, min.
10 kΩ
Digital inputs / Encoder connection / Fixed current limitation for wire-break monitoring, max.
Ambient conditions / Resistance / Use in stationary industrial systems / to biologically active substances according to EN
Yes; Class 3B2 mold, fungus and dry rot spores (with the exception of fauna);
Ambient conditions / Resistance / Use in stationary industrial systems / 60721-3-3
Class 3B3 on request
Ambient conditions / Resistance / Use in stationary industrial systems / to chemically active substances according to EN
Yes; Class 3C4 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity
Ambient conditions / Resistance / Use in stationary industrial systems / to mechanically active substances according to EN
Yes; Class 3S4 incl. sand, dust, *
Ambient conditions / Resistance / Use on land craft, rail vehicles and special-purpose vehicles / to biologically active substances according to EN
Yes; Class 5B2 mold, fungus and dry rot spores (with the exception of fauna);
Ambient conditions / Resistance / Use on land craft, rail vehicles and special-purpose vehicles / 60721-3-5
Class 5B3 on request
Ambient conditions / Resistance / Use on land craft, rail vehicles and special-purpose vehicles / to chemically active substances according to EN
Yes; Class 5C3 (RH < 75 %) incl. salt spray acc. to EN 50155 (ST2); *
Ambient conditions / Resistance / Use on land craft, rail vehicles and special-purpose vehicles / to mechanically active substances according to EN
Yes; Class 5S3 incl. sand, dust; *
Ambient conditions / Resistance / Use on ships/at sea / to biologically active substances according to EN
Yes; Class 6B2 mold and fungal spores (excluding fauna); Class 6B3 on
Ambient conditions / Resistance / Use on ships/at sea / 60721-3-6
request
Ambient conditions / Resistance / Use on ships/at sea / to chemically active substances according to EN
Yes; Class 6C3 (RH < 75 %) incl. salt spray acc. to EN 60068-2-52 (severity
Ambient conditions / Resistance / Use on ships/at sea / to mechanically active substances according to EN
Yes; Class 6S3 incl. sand, dust; *
Ambient conditions / Resistance / Usage in industrial process technology / Against chemically active substances acc. to EN
Yes; Class 3 (excluding trichlorethylene)
Ambient conditions / Resistance / Usage in industrial process technology / Environmental conditions for process, measuring
Yes; Level GX group A/B (excluding trichlorethylene; harmful gas
Ambient conditions / Resistance / Usage in industrial process technology / and control systems acc. to ANSI/ISA-71.04
concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)
Ambient conditions / Resistance / Remark / conditions acc. to EN 60721, EN 60654-4 and
during operation!
Connection method / required front connector
20-pin
Dimensions / Width
40 mm
Dimensions / Height
125 mm
Dimensions / Depth
120 mm
Weights / Weight, approx.
200 g
Product type designation
SM 321
Number of poles
20
Connections and conditions of use
Digital inputs / Input voltage / for signal "0": -30 to +5 V
Digital inputs / Input voltage / for signal "1": 13 to 30V
Digital inputs / Input current / for signal "1", typ.: 7 mA
Digital inputs / Encoder connection / Fixed current limitation for wire-break monitoring, min.: 10 kΩ
Digital inputs / Encoder connection / Fixed current limitation for wire-break monitoring, max.: 18 kΩ
Connection method / required front connector: 20-pin
Scope of supply
We will confirm the exact version, package contents and related accessories before ordering. Package information in the technical table applies to the stated order number.
Frequently asked questions
Is the same product family enough to identify a replacement?
The complete order number is essential. If the type changes, compare the electrical and mechanical design, connections and requirements of the original application.
What information is needed to check connections and accessories?
Send a nameplate photo, the designations of related modules and connectors and, where needed, a wiring diagram. We will check the specific version for your application.
Can you assess a faulty part?
Yes. Send the complete order number and a description of the fault. We will check the diagnostic and professional repair options for your specific unit.
Why buy from FOXON
1
Replacement part availability
We will check current part availability and confirm the possible delivery date before you order.
2
New original and refurbished parts
We will specify the available version and condition of the particular unit in the quotation.
3
Parts with a warranty
We will confirm the warranty period according to the part condition and specific quotation.
4
Diagnostics and repairs
For a faulty unit, we will check the options for diagnostics and professional repair.
More than 3,500customers
We deliver tomore than 100 countries
Express delivery?We will check. Contact us now.
Part conditions available for sale
Part conditions and warranty
New, sealed (NC): Brand-new, unused part in unopened original packaging. 12-month warranty.
New, opened (NO): Brand-new and unused part, but the original packaging has been opened. 12-month warranty.
New, without packaging (NW): Brand-new and unused part, supplied without original packaging. 12-month warranty.
New (N): New and unused part, typically smaller components supplied in multi-packs in one original package. 12-month warranty.
Refurbished (R): Part has been removed from service, cleaned, inspected and tested to meet original functionality and quality. 12-month warranty.
Used, tested (T): Functional used part that has passed full testing. 6-month warranty.
Used (U): Functional used part. 3-month warranty.
Sales, repairs and buyback of automation parts
We supply replacement parts for industrial automation and assess faulty units for diagnostics and repair. We also buy surplus parts. Send the exact designation and required quantity.
