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6ES7421-7DH00-0AB0

Siemens | 6ES7421-7DH00-0AB0 SM 421 Diagnostics Alarm

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  • Manufacturer: Siemens

  • Product No.: 6ES7421-7DH00-0AB0

  • Product Type: Digital Input Module

  • Product Origin: DE

  • Payment:T/T, Western Union

  • Weight: 600g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Tavsif

Siemens 6ES7421-7DH00-0AB0 SIMATIC S7-400 SM 421 Digital Input Module

Siemens 6ES7421-7DH00-0AB0 is a SIMATIC S7-400 SM 421 digital input module with 16 isolated UC 24-60V inputs. Features parameterizable input delay, wire-break monitoring, diagnostics, and alarms. Weight approximately 600 g.

Key Specifications

Parameter Value
Article No. 6ES7421-7DH00-0AB0
Product Type Digital Input Module SM 421
Number of Inputs 16
Input Voltage Type AC/DC (UC)
Rated Value 24V to 60V UC (47-63 Hz)
Backplane Current (5V) 150 mA max
Power Loss 8W typ (3.5W @ 24V, 6.5W @ 48V, 8.0W @ 60V)
Weight Approximately 600 g

Input Specifications

Parameter Value
Signal "0" Voltage -6 to +6V DC / 0-5V AC
Signal "1" Voltage 15-72V DC / -15 to -72V DC / 15-60V AC
Input Current "1" 4 to 10 mA typical
Input Delay Parameterizable: 0.5 / 3 / 10 / 20 ms
Cable Length (Shielded) 1000 m max
Cable Length (Unshielded) 600 m max (3/10/20 ms), 100 m (0.5 ms)

Diagnostics & Isolation

Parameter Value
Diagnostics Function Yes, parameterizable
Wire-Break Monitoring Yes, I > 0.7 mA
Channel Separation Yes, between each channel
Isolation Test Voltage 1500 VAC
2-Wire Sensor Quiescent Current 0.5 to 2 mA max

Dimensions

Parameter Value
Width 25 mm
Height 290 mm
Depth 210 mm

FAQs

Q1: What input voltage range does the 6ES7421-7DH00-0AB0 support?
A1: UC 24V to 60V AC/DC at 47-63 Hz.

Q2: What input delay settings are available?
A2: Parameterizable at 0.5, 3, 10, or 20 ms.

Q3: How are the channels isolated?
A3: Each channel is individually isolated, tested at 1500 VAC.

Product Resources

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🏷️ Tags: Digital Input Module Siemens

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