SIMATIC S7-1500, 6ES7521-7EH00-0AB0

The SIMATIC S7-1500, model 6ES7521-7EH00-0AB0, is a high-performance automation solution designed for industrial applications. This device boasts a rated voltage of 24V DC and operates efficiently across a temperature range of -30C to +60C, ensuring reliable functionality in challenging environmental conditions. With a power rating of 1.2W and an input current of 3 mA, it delivers optimized energy performance. The unit is designed for DIN-rail mounting, featuring compact dimensions of 35 x 147 x 129 mm and a lightweight build at 240 g, making installation convenient. Additionally, its IP20 protection level ensures resistance against solid objects and standard humidity tolerance of up to 95%. The isolation voltage of 2,000 V DC enhances safety, while the operational frequency of 50/60 Hz ensures seamless integration in various automation setups. Its robust grey housing complements industrial-grade durability, making it an ideal choice for automation needs.

General Information

• Module Name: DI 16x 24125 V UC HF

• Hardware version: FS01 and above

• Firmware version: V1.0.0+ (update possible)

• I&M data: I&M0 to I&M3

• Isochronous mode: No

• Prioritized startup: Yes

Supported Engineering

• TIA Portal: V14 or higher

• STEP 7 V5.5 SP3 or later

• PROFIBUS GSD: V1.0 / V5.1

• PROFINET GSD: V2.3

Operating Modes

• Digital Input (DI): Yes

• Counter mode: Yes (from FW V1.1.0, DC only)

• MSI (Module-internal Shared Input): Yes

• Oversampling: No

Power

• Backplane bus power consumption: 1.2 W

• Typical power loss:

  • 24 V DC: 2.2 W

  • 125 V AC: 6.0 W

Digital Inputs

• Number of inputs: 16

• Input type: IEC 61131 Type 3

• Parameterizable: Yes

• Source/Sink compatible: Yes

Counter Function (from FS04)

• Number of counters: 2 (Channel 0 & 1)

• Max frequency: 6 kHz

• Count width: 32-bit

• Count direction: Up

Input Voltages

• Rated values: 24 V / 48 V / 125 V AC/DC

• Signal levels:

  • Signal 0: 5 to +5 V

  • Signal 1: +11 to +146 V

Input Current

• Signal 1 at 24 V DC: ~3 mA

Input Delay (Filter Time)

• Parameterizable at DC: 0.05 / 0.1 / 0.4 / 1.6 / 3.2 / 12.8 / 20 ms

• Fixed for AC: 20 ms

• 0 1 transition: 0.0520 ms

• 1 0 transition: 0.0520 ms

Cable Length

• Shielded: Up to 1000 m

• Unshielded: Up to 600 m

Encoder Compatibility

• 2-wire sensors: Yes

• Max quiescent current: 1.5 mA

Diagnostics & Interrupts

• Diagnostics supported: Yes

• Diagnostic alarms: Yes

• Hardware interrupts: Yes

Detectable Faults

• Wire break: Yes (< 550 A)

• Short-circuit: No

LED Indicators

• RUN (green)

• ERROR (red)

• Channel status (green)

• Channel diagnostics (red)

• Module diagnostics (red)

Isolation & Potential Separation

• Channel-to-channel separation: Yes (each channel)

• Channel-to-backplane bus: Yes

• Withstand voltage: 2000 V DC

• Allowed potential difference between circuits:

  • 146 V DC / 132 V AC

Environmental Data

• Operating temperature:

  • Horizontal: 30 to +60C

  • Vertical: 30 to +40C

Eco Profile

• Environmental Product Declaration: Yes

• Global warming potential:

  • Total: 18.9 kg CO eq

  • Production: 12.1 kg

  • Operation: 7.66 kg

  • End-of-life: 1.02 kg

Security Functions

• Signed firmware update: Yes

• Data integrity: No

Mechanical Data

• Width: 35 mm

• Height: 147 mm

• Depth: 129 mm

• Weight: Approx. 240 g

Technical Details 

FAQs of SIMATIC S7-1500, 6ES7521-7EH00-0AB0: