Sales Original Germany Siemens 6ES7421-7DH00-0AB0 SM421 16-Channel Galvanically Isolated Digital Input Module UC24~60V AC/DC For S7-400 PLC
Complete order number: 6ES7421-7DH00-0AB0
Product Model: SM 421 16DI Wide Voltage Digital Input Module
Adaptation system: Siemens SIMATIC S7-400 full series CPU, S7-400H redundant hot standby control system, supporting hot swapping
Origin: Made in Germany
Channel specifications: 16 digital inputs, 4 channels per set of optoelectronic isolation (isolation withstand voltage 1500V AC), a total of 4 independent isolation circuits, strong resistance to industrial electromagnetic interference
Input voltage range: AC/DC universal UC 24~60V (power frequency 47~63Hz)
Signal 0 level: DC-6~+6V/AC 0~5V
Signal 1 level: DC 15~72V/AC 15~60V
Input current: typical 4mA when signal is 1, range 4-10mA
Parameterized input filtering delay: 0.5ms/3ms/10ms/20ms optional, can filter out on-site jitter and electromagnetic interference triggering errors
Diagnostic function: supports wire breakage detection, grouped fault alarm, hardware diagnostic interruption, and can read circuit abnormal status at the upper level
Cable transmission distance: shielded cable up to 1000m, unshielded cable up to 600m, suitable for long-distance on-site signal acquisition
Power supply parameters: maximum consumption of 150mA for 5V backplane; typical power consumption: 3.5W for 24V working condition, 6.5W for 48V working condition, and 8W for 60V working condition
Wiring accessories: A 40 pin front connector (6ES7492-1AL00-0AA0) needs to be separately selected, and the module does not include wiring terminals at the factory
Physical specifications: S7-400 single slot UR rack installation, dimensions 25mm × 290mm × 210mm, net weight approximately 790g
Working environment: 0 ℃~+60 ℃ rack operating temperature, IP20 protection, in compliance with industrial EMC anti-interference standards
Source status: Brand new factory sealed spot sales, 12-month warranty, supporting global bulk supply of spare parts for foreign trade