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6ES7321-7BH01-0AB0 Siemens
Original price
$360.00
-
Original price
$1,168.75
Original price
$360.00
$360.00
-
$1,168.75
Current price
$360.00
Trusted By
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The SIMATIC S7-300 digital input module SM 321, part number 6ES7321-7BH01-0AB0, is a 16-point, 24 V DC isolated input module for Siemens S7-300 PLC systems. It provides hardware and diagnostic interrupt capabilities, supports isochronous operation, and permits configuration in RUN mode. It integrates within modular automation architectures to monitor discrete field signals such as switch or proximity sensor states in mid-range industrial control environments. Common applications include machine logic control, sequential automation tasks, and event-driven process monitoring using the S7-300 platform.
Best Suited For
- Discrete signal monitoring in S7-300 control racks
- Rapid response applications using hardware interrupts (OB40)
- Isochronous input handling in motion-synchronous processes
- Prox-sensor and switch input aggregation with diagnostics
Digital inputs
16 points
Rated input voltage
24 V DC
Interrupt support
Hardware & diagnostic interrupts
Sensor supply
2 short-circuit-proof per 8 channels
Isolation
Channel-to-backplane isolated
Technical Specifications
I/O & Electrical
Rated input voltage
24 V DC
Signal "1" voltage range
13 V to 30 V
Signal "0" voltage range
-30 V to +5 V
Input current (signal "1")
typ. 7 mA
Communication & Power
Current consumption (backplane bus)
max. 110 mA
Physical & Environmental
Power loss (typical)
typ. 3.8 W
Cable length unshielded / shielded
max. 600 m / max. 1000 m
Isolation test voltage
500 V DC
