Spot Original Germany Siemens 6ES7421-1BL01-0AA0 SM421 32-Channel Galvanically Isolated Digital Input Module 24VDC For S7-400 PLC
Complete order number: 6ES7421-1BL01-0AA0
Product Model: SM 421 32DI 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: 32 channels of DC24V digital input, with one set of optoelectronic isolation for every 8 channels, for a total of 4 independent isolation circuits, effectively suppressing common mode interference and ground loop current on site
Rated input voltage: DC24V (allowable range 20.4~28.8V DC)
Signal 0 level: -30V~+5V DC
Signal 1 level: 13V~30V DC
Single channel input current: signal 1 typically 7mA; two-wire sensor allows maximum static leakage current of 1.3mA
Fixed input filtering delay: 1.2~4.8ms, capable of filtering mechanical switch jitter and minor electromagnetic interference triggering errors in the power grid
Cable transmission distance: shielded twisted pair cable up to 1000m, unshielded cable up to 600m, suitable for batch collection of long-distance switch points in the factory area
Diagnostic function: Only equipped with SF system fault indicator light, no disconnection detection, no hardware diagnostic interrupt function, unable to read single channel circuit abnormalities through PLC
Status indicator: Each channel is equipped with a green LED status indicator to visually view the on/off status of the switch
Power supply parameters: Backboard 5V maximum consumption 20mA; module typical power consumption 6W
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, net weight approximately 770g, IP20 protection
Working environment: 0 ℃~+60 ℃ rack operating temperature, in compliance with industrial EMC industrial anti-interference standards
Source status: Brand new factory sealed stock, 12-month warranty, supports global bulk supply of spare parts for foreign trade