Siemens SIMATIC S7-300 Digital Input SM 321 - 6ES7321-1FH00-0AA0 | 16 DI (120/230V AC)
SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED 16 DI, 120/230V AC, 1 X 20 PIN,(6ES73211FH000AA0). Technical Description
Input Type: Provides 16 Digital Inputs designed for high-voltage AC signals.
Voltage Range: Rated for 120V AC to 230V AC, allowing direct connection to mains-powered switches and sensors.
Isolation: Optically isolated from the backplane bus to protect the PLC CPU from high-voltage surges.
Wiring Requirement: Requires a 20-pin front connector (6ES7392-1AJ00-0AA0).
Application: Commonly used in power management, motor control centers (MCC), and utility automation.
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Product Details
SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED 16 DI, 120/230V AC, 1 X 20 PINFAQ Section
Q: Can this module handle 24V DC signals?
Q: How many pins does the front connector need?
Q: Is it safe to connect mains power directly to the module?
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