Product Summary
The 1794-IM16 digital input module handles 16 non-isolated inputs for 240 VAC systems. It supports a voltage range from 159 to 264 VAC. This module draws 11 mA per input at nominal voltage. Its FlexBus consumes 32 mA at 5 VDC. The module dissipates a maximum of 6 watts of power. You can operate it reliably from 0 to 55°C. This compact unit weighs only 141 grams.
[Theme A: Product Procurement & Buyer Guide]
Why Choose the 1794-IM16 for Your System
Procurement managers need a reliable digital input module. The 1794-IM16 provides exactly that with 16 high-voltage channels. You can directly monitor 240 VAC signals from sensors or switches. This eliminates the need for extra signal conditioning hardware. The module's nominal impedance of 22.2 kilohms ensures consistent signal detection. Application engineers will appreciate the non-isolated input design. It simplifies wiring and reduces overall system complexity. The module fits perfectly into any standard Flex I/O chassis. Its physical dimensions are just 94 by 94 by 91 mm. This small footprint saves valuable space inside your control panel.
Key Technical Specifications for Selection
This module operates within a wide input voltage window. The range spans from 159 VAC to 264 VAC. Such flexibility handles common voltage fluctuations in industrial plants. The module draws a low input current of 11 mA. This reduces the load on your upstream power supply. You must consider the FlexBus current draw of 32 mA. This ensures your backplane power supply meets the total demand. The maximum power dissipation is 6 watts at 264 VAC. Thermal management is straightforward with a dissipation of 20.47 BTU/hr. These metrics help you design an efficient and cool system.
[Theme B: Step-by-Step User & Installation Guide]
Mechanical Mounting and Physical Setup
Start by ensuring your Flex I/O chassis power is off. Mount the 1794-IM16 module onto the backplane. Align the module's guide rails with the chassis slot. Push the module firmly until it locks into place. The module measures approximately 94 mm in height. Its width and depth are also close to 94 mm. This cubic shape makes installation easy in tight spots. The complete unit weighs about 141 grams or 4.97 oz. You do not need special tools for the mechanical installation. Your technicians can complete the mounting quickly.
Electrical Wiring and Connection Steps
Connect your 240 VAC input signals to the terminal block. The module supports non-isolated inputs for direct connections. Ensure your wiring matches the nominal on-state voltage of 240 VAC. The input impedance of 22.2 kilohms determines your sensor's load. Verify that your sensors can drive the 11 mA input current. Wire each field device to the appropriate input channel. The module provides 16 separate input points. Double-check all wiring against your system schematic. Apply power to the chassis after completing all connections. The module is ready for configuration through the control network.
