The Allen-Bradley 1794-IA16 belongs to the popular Flex I/O family, offering a compact and flexible solution for AC signal monitoring. This module provides sixteen non-isolated input channels that accept voltages from 74VAC to 132VAC, making it ideal for interfacing with limit switches, push buttons, and other AC-powered field devices. Its DIN-rail mountable design simplifies panel installation, while the yellow status indicators allow for quick visual diagnostics. For complete operation, you must pair this module with a compatible terminal base, such as the 1794-TB3 or 1794-TBN.
The 1794-IA16 operates with a nominal input voltage of 120VAC and features a clearly defined on-state voltage range from 74VAC to 132VAC. The module's off-state voltage is capped at 20VAC, which ensures reliable signal discrimination and prevents false triggering. Its on-state current ranges from a minimum of 5.49mA to a maximum of 14.81mA, with a nominal input current of 12mA at 120VAC. Additionally, the off-state current is specified at a minimum of 2.9mA, which helps in accurately detecting the de-energized state of field devices.
The module draws a Flexbus current of 20mA from the backplane, which is consistent with most Flex I/O modules. Power dissipation is rated at 6.4 Watts maximum when operating at 132VAC, with a corresponding thermal dissipation of 21.8 BTU/hr. The 1794-IA16 also features type-tested isolation of 1,264VAC for 60 seconds between the field side and the system, with a continuous isolation voltage of 120VAC.
Designed for rugged industrial environments, the 1794-IA16 operates reliably within a temperature range of 0°C to 55°C (32°F to 131°F). It can be stored in temperatures as low as -40°C and as high as 85°C (-40°F to 185°F). The module withstands vibration of 5g at 10 to 500 Hz and operating shocks of 30g, ensuring stable performance in demanding applications. Its open-style enclosure requires installation within a protective cabinet. The physical dimensions are 94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in.), making it a space-saving choice for control panels.
Proper installation of the 1794-IA16 requires a compatible Flex I/O terminal base. Supported bases include the 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3K, 1794-TB3SK, and 1794-TBNK models. These terminal bases facilitate easy wiring and allow for daisy-chaining power connections from one module to the next, which significantly reduces wiring effort and cable lengths. Furthermore, the module works seamlessly with Flex I/O communication adapters, such as the 1794-AENT Ethernet adapter, the 1794-ACN ControlNet adapter, and the 1794-ASB Remote I/O adapter. The module's keyswitch must be set to position 8 for correct mounting and electrical alignment.
1 x Allen-Bradley 1794-IA16 AC Input Module
1 x Installation Instructions Manual (printed)
Note: Terminal bases, adapters, and wiring accessories are sold separately.
We ship all orders using reliable express couriers, including FedEx, UPS, and DHL. Delivery times vary based on destination, but we ensure careful packaging to prevent damage during transit.
1. Is the 1794-IA16 compatible with the 1794-AENTR adapter?
Yes, the 1794-IA16 works with both the 1794-AENT and 1794-AENTR Ethernet adapters, as well as other Flex I/O communication adapters.
2. What terminal base do I need for this module?
You can use any of the following: 1794-TB3, 1794-TB3S, 1794-TBN, 1794-TB3K, 1794-TB3SK, or 1794-TBNK. Choose based on your wiring requirements.
3. Can I mix this module with other Flex I/O types on the same adapter?
Absolutely. The Flex I/O system allows you to combine different input, output, and specialty modules on the same communication adapter.
4. What is the maximum input current for each channel?
Each channel on the 1794-IA16 has a maximum on-state current of 14.81mA. The nominal current is 12mA at 120VAC.
5. Does the module provide isolation between channels?
No, the 1794-IA16 features non-isolated input channels. Isolation is provided between the field side and the system only.
| Brand Name | |
| Model No. | 1794-IA16 |
| Product Type | Digital Input Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
