Complete order number: 6ES7421-5EH00-0AA0
Product Model: SM 421 16DI AC 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 configuration: 16 channels of AC120V AC digital input, 4 channels per set of optoelectronic isolation (isolation withstand voltage 1500V AC), a total of 4 independent isolation circuits, effectively suppressing common mode interference in industrial power grids
Rated input voltage: AC 120V (allowable voltage range: AC 79~132V, power frequency 47~63Hz)
Signal 0 level: AC 0~20V
Signal 1 level: AC 79~132V
Single channel input current: typically 2mA when the signal is 1, supporting direct connection of two-wire AC type proximity switches
Fixed input filtering delay: standard 20ms, can filter out false triggering signals caused by grid clutter and switch jitter
Cable transmission distance: shielded twisted pair cable up to 1000 meters, unshielded cable up to 600 meters, suitable for long-distance AC switch point collection in the factory area
Diagnostic function: supports grouped circuit fault diagnosis, SF fault total indicator light alarm, and can read module operation abnormal status in STEP7
Status indicator: Each channel is equipped with a green LED running indicator light to visually view the on\/off status of the on-site switch
Power supply parameters: Backboard 5V maximum consumption 130mA, module typical power consumption 7W
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 \u00d7 290mm \u00d7 210mm, net weight approximately 785g
Working environment: 0 \u2103~+60 \u2103 rack operating temperature, IP20 protection, in compliance with industrial EMC anti-interference standards
Source status: Brand new factory sealed stock supply, 12-month warranty, supports global bulk supply of spare parts for foreign trade<\/p>\n","protected":false},"excerpt":{"rendered":"
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