1794-IM16 Digital Input Module – Flex I/O Series
Brand: Allen Bradley | Model: 1794-IM16 | Type: Digital Input Module, Non-Isolated
The 1794-IM16 delivers 16 digital AC inputs for the Flex I/O system. It handles a nominal 240V AC input with a voltage range of 159 to 264V AC. This module supports reliable monitoring and control in industrial environments. Its compact design simplifies integration into existing control architectures. Ideal for high-voltage digital sensing applications.
Technical Specifications
| Inputs | 16, non-isolated (individual channels not isolated) |
| On-State Voltage | 159…264V AC (nominal 240V AC) |
| Off-State Voltage (max) | 40V AC |
| On-State Current | min 5.30 mA / max 13.29 mA |
| Off-State Current (max) | 2.6 mA |
| Nominal Input Impedance | 22.2 kΩ |
| Nominal Input Current | 11 mA @ 240V AC |
| Isolation Voltage | 250V continuous (Basic Insulation), tested @ 1530V AC for 60s |
| FlexBus Current | 32 mA @ 5V DC |
| Power Dissipation (max) | 6 W @ 264V AC |
| Thermal Dissipation | 20.47 BTU/hr @ 264V AC |
| Temperature Range | 0 … 55 °C (operating) |
| Environmental Tolerance | Open-style, NEMA rating none, T4 temp code |
| Dimensions (H x W x D) | 94 x 94 x 91 mm (3.7 x 3.7 x 3.6 in) |
| Weight | 141 g (4.97 oz) |
| Indicators | 16 yellow status LEDs |
| Keyswitch Position | 8 |
| Terminal Base Unit | 1794-TBN, 1794-TBNK (recommended) |
Installation & Compatibility
- Mounting: Horizontal or vertical mounting in cabinet. Use recommended terminal base 1794-TBN or 1794-TBNK.
- Wiring: Wire size determined by terminal base (refer to base manual). Screw torque per base specs.
- Compatibility: Fully compatible with Modicon Quantum and other Flex I/O systems.
- Diagnostic Capability: Each channel has a yellow status indicator for real-time diagnostics. Visual fault detection simplifies troubleshooting.
- Noise Immunity: Basic isolation type (250V continuous) with tested 1530V AC for 60s. No channel-to-channel isolation.
Maintenance & Service
- Routine Check: Inspect indicators and terminal connections periodically. Module is maintenance-free under normal operation.
- Firmware: No field firmware updates; plug-and-play operation.
- Repair: Factory repair or exchange; contact support for RMA.
Certifications & Standards
- North American Temp Code: T4
- Isolation Type: Basic Insulation, 250V continuous
- Pilot Duty Rating: C300 (for 1794-OM16 only, not applicable to IM16)
- Enclosure: Open-style (no IP rating)
Typical Applications
- High-voltage AC digital input monitoring (e.g., motor starters, contactors)
- PLC and DCS system expansion for discrete sensors
- Industrial automation for packaging, material handling, and assembly lines
- Retrofit projects requiring 240V AC input capability
Package Contents
- 1 x 1794-IM16 Digital Input Module
- No terminal base included (order separately)
- No mounting hardware included
Warranty & Shipping
- Warranty: 12-month warranty against defects in material and workmanship.
- Shipping Carriers: FedEx, UPS, DHL – worldwide express options.
- Delivery: Rapid response and same-day dispatch for in-stock items.
Frequently Asked Questions (FAQ)
- Q: Can this module be used with 120V AC?
A: No, it requires 159–264V AC (nominal 240V AC). - Q: Is the module isolated per channel?
A: No, it provides non-isolated inputs (no channel-to-channel isolation). - Q: What terminal base is required?
A: Use 1794-TBN or 1794-TBNK terminal base units. - Q: What is the operating temperature range?
A: 0 to 55 °C (32 to 131 °F). - Q: Does it have a pilot duty rating?
A: No, C300 rating applies only to 1794-OM16 (output module).
Why Buy From Oiltech Controls?
- Over 15 years of expertise in industrial automation spare parts.
- Global shipment support with tracking and insurance.
- Tested surplus and refurbished options with full functionality.
- 12-month warranty for peace of mind.
- Technical verification and testing performed before shipment.
- Specialized support for obsolete and legacy control systems.
Contact us for a quote:
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