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Siemens 6ES7521-7TH00-0AB0
SIMATIC S7-1500, digital input module DI 16xNAMUR HF, 16 channels in groups of 8; for 8.2 V NAMUR encoder
- MPN
- 6ES7521-7TH00-0AB0
- Category
- SM 521 digital input modules
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What is the Siemens 6ES7521-7TH00-0AB0?
SIMATIC S7-1500, digital input module DI 16xNAMUR HF, 16 channels in groups of 8; for 8.2 V NAMUR encoder; sensor supply 8.2 V; input delay; parameterizable 0.05 ... 20 ms; integrated counting function up to 20 kHz pulse stretching; chatter monitoring; signal inversion diagnostics; hardware interrupts; all necessary components for shielding included in the scope of supply; front connector (screw terminals or push-in) to be ordered separately
Specifications
General information
| Product type designation | DI 16xNAMUR HF |
| HW functional status | from FS01 |
| Firmware version | V1.0.0 |
| Firmware version — FW update possible | Yes |
| Product function — I&M data | Yes; I&M0 to I&M3 |
| Product function — Isochronous mode | Yes |
| Product function — Prioritized startup | Yes |
| Engineering with — STEP 7 TIA Portal configurable/integrated from version | STEP 7 V17 or higher |
| Engineering with — STEP 7 configurable/integrated from version | V5.5 SP3 / - |
| Engineering with — PROFIBUS from GSD version/GSD revision | V1.0 / V5.1 |
| Engineering with — PROFINET from GSD version/GSD revision | V2.3 / - |
| Operating mode — DI | Yes |
| Operating mode — Counter | Yes |
| Operating mode — Oversampling | No |
| Operating mode — MSI | Yes |
Supply voltage
| Rated value (DC) | 24 V |
| permissible range, lower limit (DC) | 19.2 V |
| permissible range, upper limit (DC) | 28.8 V |
| Reverse polarity protection | Yes |
Input current
| Current consumption, max. | 220 mA |
Encoder supply
| Number of outputs | 16; 2x 8.2 V DC |
| Short-circuit protection | Yes |
| NAMUR encoder supply — 8.2 V | Yes |
| NAMUR encoder supply — Short-circuit protection | Yes; Per group, electronic |
| NAMUR encoder supply — Output current, max. | 100 mA; per group |
| NAMUR encoder supply — Output current per module, max. | 200 mA |
Power
| Power consumption from the backplane bus | 0.6 W |
Power loss
| Power loss, typ. | 3.7 W |
Address area
| Address space per module — Inputs | 2 byte |
| Address space per module — Outputs | 0 byte |
Digital inputs
| Number of digital inputs | 16; NAMUR |
| Digital inputs, parameterizable | Yes |
| Sourcing/sinking input | P-reading |
| Pulse extension | Yes; 0.05 s, 0.1 s, 0.2 s, 0.5 s, 1 s, 2 s |
| Edge evaluation | Yes; rising edge, falling edge, edge change |
| Signal change flutter | Yes; 2 to 32 signal changes |
| Flutter observation window | Yes; 0.5 s, 1 s to 100 s in 1-s steps |
| Number of simultaneously controllable inputs — Number of simultaneously controllable inputs | 16 |
| Digital input functions, parameterizable — Gate start/stop | Yes; software/hardware gate |
| Digital input functions, parameterizable — Freely usable digital input | Yes |
| Digital input functions, parameterizable — Counter — Number, max. | 4; 4 counters max. 10 kHz or 2 counters max. 20 kHz + 2 counters max. 10 kHz; see manual for details |
| Digital input functions, parameterizable — Counter — Counting frequency, max. | 20 kHz; See manual for details |
| Digital input functions, parameterizable — Counter — Counting width | 32 bit |
| Digital input functions, parameterizable — Counter — Counting direction up/down | Yes; forward / backward |
| Digital input functions, parameterizable — Digital input with oversampling | No |
| Input voltage — Rated value (DC) | 8.2 V |
| Input current — for signal "1", typ. | 10 mA |
| Input current — for 10 k switched contact — for signal "0", min. | 0.35 mA |
| Input current — for 10 k switched contact — for signal "0", max. | 1.2 mA |
| Input current — for 10 k switched contact — for signal "1", min. | 2.1 mA |
| Input current — for 10 k switched contact — for signal "1", max. | 10 mA |
| Input current — for unswitched contact — for signal "0", max. (permissible quiescent current) | 0.35 to 1.2 mA |
| Input current — for unswitched contact — for signal "1", typ. | 2.1 ... 10 mA |
| Input current — for NAMUR encoders — for signal "0", min. | 0.35 mA |
| Input current — for NAMUR encoders — for signal "0", max. | 1.2 mA |
| Input current — for NAMUR encoders — for signal "1", min. | 2.1 mA |
| Input current — for NAMUR encoders — for signal "1", max. | 10 mA |
| Input delay (for rated value of input voltage) — for standard inputs — parameterizable | Yes; 0.05 / 0.1 / 0.4 / 1.6 / 3.2 / 12.8 / 20 ms |
| Input delay (for rated value of input voltage) — for standard inputs — at "0" to "1", min. | 0.05 ms |
| Input delay (for rated value of input voltage) — for standard inputs — at "0" to "1", max. | 20 ms |
| Input delay (for rated value of input voltage) — for standard inputs — at "1" to "0", min. | 0.05 ms |
| Input delay (for rated value of input voltage) — for standard inputs — at "1" to "0", max. | 20 ms |
| Input delay (for rated value of input voltage) — for interrupt inputs — Parameterizable | Yes |
| Input delay (for rated value of input voltage) — for technological functions — Parameterizable | Yes |
| Input delay (for rated value of input voltage) — for NAMUR inputs — at "0" to "1", max. | 20 ms |
| Input delay (for rated value of input voltage) — for NAMUR inputs — at "1" to "0", max. | 20 ms |
| Cable length — shielded, max. | 200 m; 200 m for technological functions; depending on input frequency, encoder and cable quality; max. 50 m at 20 kHz |
Encoder
| Connectable encoders — NAMUR encoder/changeover contact according to EN 60947 | Yes; no CO contact |
| Connectable encoders — Single contact / changeover contact unconnected | Yes; no CO contact |
| Connectable encoders — Single contact / changeover contact connected with 10 kΩ | Yes; no CO contact |
| Connectable encoders — 2-wire sensor | Yes |
| Connectable encoders — 2-wire sensor — permissible quiescent current (2-wire sensor), max. | 1.2 mA |
Isochronous mode
| Filtering and processing time (TCI), min. | 60 µs; At 50 μs filter time |
| Bus cycle time (TDP), min. | 250 µs |
Interrupts/diagnostics/status information
| Diagnostics function | Yes |
| Alarms — Diagnostic alarm | Yes |
| Alarms — Hardware interrupt | Yes |
| Diagnoses — Monitoring the supply voltage | Yes |
| Diagnoses — Monitoring of encoder power supply | Yes; short-circuit |
| Diagnoses — Wire break | Yes; to I < 350 µA |
| Diagnoses — short-circuit | No |
| Diagnostics indication LED — RUN LED | Yes; green LED |
| Diagnostics indication LED — ERROR LED | Yes; red LED |
| Diagnostics indication LED — Monitoring of the supply voltage (PWR-LED) | Yes; green LED |
| Diagnostics indication LED — Channel status display | Yes; green LED |
| Diagnostics indication LED — for channel diagnostics | Yes; red LED |
| Diagnostics indication LED — for module diagnostics | Yes; red LED |
Potential separation
| Potential separation channels — between the channels | No |
| Potential separation channels — between the channels, in groups of | 8 |
| Potential separation channels — between the channels and backplane bus | Yes |
| Potential separation channels — Between the channels and load voltage L+ | Yes |
| Potential separation channels — between the channels and the power supply of the electronics | No |
Isolation
| Isolation tested with | 707 V DC (type test) |
Standards, approvals, certificates
| Siemens Eco Profile (SEP) | Siemens EcoTech |
| Suitable for safety functions | No |
| Ecological footprint — environmental product declaration | Yes |
| Ecological footprint — Global warming potential — global warming potential, (total) [CO2 eq] | 18.9 kg |
| Ecological footprint — Global warming potential — global warming potential, (during production) [CO2 eq] | 12.1 kg |
| Ecological footprint — Global warming potential — global warming potential, (during operation) [CO2 eq] | 7.66 kg |
| Ecological footprint — Global warming potential — global warming potential, (after end of life cycle) [CO2 eq] | -1.02 kg |
Security
| signed firmware update | No |
| safely removing data | No |
| data integrity | No |
Ambient conditions
| Ambient temperature during operation — horizontal installation, min. | -30 °C |
| Ambient temperature during operation — horizontal installation, max. | 60 °C |
| Ambient temperature during operation — vertical installation, min. | -30 °C |
| Ambient temperature during operation — vertical installation, max. | 40 °C |
| Altitude during operation relating to sea level — Installation altitude above sea level, max. | 5 000 m; Restrictions for installation altitudes > 2 000 m, see manual |
| Absolute humidity — dew point, min. | -60 °C; suitable for dry room applications |
Dimensions
| Width | 35 mm |
| Height | 147 mm |
| Depth | 129 mm |
Weights
| Weight, approx. | 240 g |
Other
| Note: | please order front connectors (screw-in/push-in) separately |
Downloads & documentation
Official documents from Siemens, downloaded directly from the manufacturer.
Data sheets & manuals
6ES7521-7TH00-0AB0: frequently asked questions
When can 6ES7521-7TH00-0AB0 be shipped?
6ES7521-7TH00-0AB0 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up 6ES7521-7TH00-0AB0 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for 6ES7521-7TH00-0AB0 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
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