The Schneider Electric ASB817116 is a 16-channel digital input module designed for the Modicon 800 Series I/O platform. This module is specifically engineered to interface with 115 VAC field signals, providing reliable discrete sensing for industrial automation environments such as power utilities, petrochemical processing, and heavy manufacturing. By utilizing robust signal conditioning, the module ensures that high-voltage inputs from field devices—such as limit switches, pushbuttons, and auxiliary contacts—are accurately captured while filtering out electrical noise and transient spikes.
This module is ideal for monitoring status signals in AC-powered control systems. Typical applications include monitoring motor control center (MCC) status, tracking safety switch states, and detecting proximity sensor triggers within distributed I/O architectures.
| Model | ASB817116 |
| Channels | 16 |
| Input Voltage (Nominal) | 115 VAC |
| Input Voltage Range | 85 to 130 VAC |
| Frequency Range | 47 to 63 Hz |
| ON-State Threshold | 85 VAC minimum |
| OFF-State Threshold | 40 VAC maximum |
| Input Impedance | 12 kOhm at 60 Hz |
| Isolation | 1500 VAC (channel-to-bus) |
| Backplane Current | 250 mA at 5 VDC |
| Operating Temperature | 0 to 60 deg C |
| Storage Temperature | -40 to 85 deg C |
| Humidity | 5 to 95% non-condensing |
What is the primary function of the ASB817116 module?
This module acts as a bridge between 115 VAC field devices and the PLC, converting high-voltage status signals into digital logic levels for the controller.
Does this module require external power for the inputs?
The module is designed to monitor 115 VAC field signals; however, it draws its internal logic power from the 5 VDC backplane rail of the 800 Series chassis.
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