The Allen-Bradley 1794-IV16 is a high-performance FLEX I/O input module specifically designed for distributed industrial control applications requiring reliable 24V DC discrete input acquisition. This module features 16 sinking input channels, each optically isolated to protect against electrical noise and transient surges, ensuring robust signal integrity in demanding factory floor environments. The 1794-IV16 seamlessly integrates with the FLEX I/O platform via a standard backplane interface, supporting both local and remote I/O configurations. It is engineered for ease of use with hot-swappable capability, allowing module replacement without system interruption. The module's compact form factor saves valuable cabinet space while delivering high-density input capacity. For applications requiring precise monitoring of proximity sensors, limit switches, or pushbuttons, the 1794-IV16 offers exceptional performance with a 1.0 ms nominal off-to-on delay and 2.0 ms on-to-off delay, providing fast response times for critical control loops. Its extended temperature range and robust construction make it ideal for use in manufacturing, oil and gas, water treatment, and material handling systems.
| Parameter |
Specification |
| Product Type |
FLEX I/O DC Input Module |
| Model Number |
1794-IV16 |
| Input Channels |
16 (sinking) |
| Input Voltage Rating |
24V DC nominal (18-30V DC operating range) |
| Input Current (per channel) |
8 mA typical at 24V DC |
| Off-State Voltage |
≤ 5V DC |
| Off-State Current |
≤ 1.5 mA |
| On-State Voltage Threshold |
≥ 10V DC |
| On-State Current Threshold |
≥ 2.0 mA |
| Input Delay (Off-to-On) |
1.0 ms typical |
| Input Delay (On-to-Off) |
2.0 ms typical |
| Isolation Voltage |
1500V AC between field and system (optical isolation) |
| Power Consumption (from backplane) |
50 mA at 5V DC; 100 mA at 24V DC |
| Operating Temperature |
-20°C to +60°C (-4°F to +140°F) |
| Storage Temperature |
-40°C to +85°C (-40°F to +185°F) |
| Relative Humidity |
5% to 95% non-condensing |
| Vibration Resistance |
5 g Standard Models 10-500 Hz (operating) |
| Shock Resistance |
30 g (operating) |
| Enclosure Type |
Open-style, suitable for panel mounting |
| Wiring |
Removable terminal block (spring-clamp or screw-type, depending on variant) |
| Keying |
Mechanical keying provided for proper insertion |
| LED Indicators |
Green for each channel (input status); Red for module fault |
| Communication Protocol |
FLEX I/O backplane (compatible with ControlNet, DeviceNet, EtherNet/IP adapters) |
| Hot-Swap Capability |
Yes, without power-down |
| Certifications |
UL, cUL, CE, ATEX (Zone 2), IECEx (Zone 2) |
| Weight |
Approx. 0.2 kg (0.44 lb) |
| Dimensions (H x W x D) |
94 mm x 48 mm x 76 mm (3.70 in x 1.89 in x 2.99 in) |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22