Product Overview
Technical Summary
| Product type | DI 16×24 V DC HS |
|---|---|
| Digital inputs | 16 |
| Rated input voltage | 24 V DC |
| Encoder supply | 16 outputs; 2x 24 V DC |
| Maximum counting frequency | 20 kHz |
| Input delay | 0.05 ms to 20 ms |
| Firmware version | V1.0.0 |
| Engineering | STEP 7 V17 or higher; STEP 7 V5.5 SP3 / – |
| Communication | PROFIBUS V1.0 / V5.1; PROFINET V2.3 / – |
| Front connector | Screw terminals or push-in |
| Power consumption from backplane bus | 0.6 W |
| Product lifecycle | Active Product |
Key Features
16 digital inputs, arranged in groups of 8, with a 24 V DC rated input voltage and input characteristic curve according to IEC 61131, type 2.
16 outputs provide 2x 24 V DC; output current is maximum 150 mA per group and maximum 300 mA per module, with electronic short-circuit protection per group.
Up to 4 counters are supported: 4 totalizers at maximum 10 kHz, or 2 totalizers at maximum 20 kHz plus 2 totalizers at maximum 10 kHz. Counting width is 32 bit.
Input delay is parameterizable from 0.05 ms to 20 ms. Pulse extension, positive- and negative-edge evaluation, chatter monitoring, signal inversion, and hardware interrupts are supported.
The front connector uses screw terminals or push-in terminals. Shielded cable length is maximum 1 000 m, with restrictions for technological functions, input frequency, encoder, and cable quality; maximum 50 m applies at 20 kHz.
The shield set is to be ordered separately if applicable.
Frequently Asked Questions
What is the exact product type of 6ES7521-7BH00-0AB0?
The product type designation is DI 16×24 V DC HS for a SIMATIC S7-1500 digital input module.
How many digital inputs does the module have?
It has 16 digital inputs in groups of 8.
What counting frequency does the module support?
The maximum counting frequency is 20 kHz, with the stated totalizer combinations for 4 totalizers at maximum 10 kHz or 2 totalizers at maximum 20 kHz plus 2 totalizers at maximum 10 kHz.
Which front connector options are available?
The front connector uses screw terminals or push-in terminals.
Is the shield set included?
The shield set is not included; it is to be ordered separately if applicable.
