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Brand: Allen-Bradley
Allen-Bradley 5094-IY8 FLEX 5000 Universal Analog Input
Description
An eight-channel universal input for RTD, thermocouple, voltage and current
The Allen-Bradley 5094-IY8 is a FLEX 5000 universal analog input module. Each of its 8 channels accepts voltage, current, resistance, RTD, thermocouple or millivolt signals, so one catalog number covers temperature and process measurement without separate temperature modules.
Conversion uses two 24-bit multiplexed sigma-delta converters, with 16-bit resolution at a 10 Hz notch filter. Data is returned as IEEE 754 floating point with timestamps and CIP Sync, and the module supports onboard alarming and scaling to engineering units.
Technical specifications
| Parameter | Specification |
|---|---|
| Catalog number | 5094-IY8 (5094-IY8XT extended temperature in the same table) |
| Inputs | 8 differential or single-ended |
| Voltage / current ranges | +/-10 V, 0-10 V, 0-5 V / 0-20 mA, 4-20 mA |
| Resistive ranges | 1-500, 2-1000, 4-2000 and 8-4000 Ohm |
| RTD types | Platinum 385 and 3916 (100, 200, 500, 1000 Ohm); nickel 672 and 618; copper |
| Thermocouple types | B, C, D, E, J, K, L (TXK/XK), N, R, S, T; +/-100 mV range |
| Platinum 385 range | -200 to +870 C |
| Calibrated accuracy at 25 C | 0.05 percent of full scale |
| Scan time | 360 us per channel; 1.4 ms per group of four channels |
| Notch filters | 5 Hz to 62.5 kHz selections; 10 Hz default 50/60 |
| Sensor source voltage | 24 V, 200 mA max |
| Cold-junction compensation | 8 thermistors in the 5094-RTB3T terminal base; +/-0.5 C local |
| Open-circuit detection | Under 2 s voltage; under 1 s for 4-20 mA; under 10 s RTD |
| Overvoltage protection | +/-32 V DC |
| Backplane / SA current | 75 mA at 15 V DC / 480 mA at 18-32 V DC (includes 200 mA SSV) |
| Power dissipation, max | 3.9 W (13.31 BTU/hr) |
| Isolation | 250 V continuous, basic, system to field; none between channels |
| Terminal base | 5094-MB with 5094-RTB3T or 5094-RTB3TS, ordered separately |
| Dimensions (H x W x D) | 87.0 x 94.0 x 54.0 mm |
Why a universal input helps
In a skid with thermocouples, RTDs and 4-20 mA transmitters, a universal module reduces the number of spare part numbers and lets a channel be reconfigured in software. The 24 V sensor source voltage output can power a loop, and the RTD excitation is 600 uA in 3-wire and 4-wire modes and 100 uA in 2-wire mode.
Ordering and wiring notes
The mounting base and terminal base do not ship with the module, so order the 5094-MB and a 5094-RTB3T or RTB3TS terminal base separately. The cold-junction thermistors are in the RTB3T base and are for thermocouple mode only. The module is not HART compliant, and an external 250 Ohm resistor is suggested in the data sheet for HART transmitter compliance. Confirm all values against the manufacturer publication.
When wiring thermocouples, remember that the 8 thermistors for cold-junction compensation are built into the 5094-RTB3T terminal base, which gives a local CJC accuracy of plus or minus 0.5 C according to the data sheet. The notch filter can be selected from 5 Hz to 62.5 kHz, and a digital filter from 0 to 32.767 s trades noise rejection against response. The module accepts 24 V DC SA power in the range 18 to 32 V DC.
Related Allen-Bradley products: Allen-Bradley 5094-IF8 FLEX 5000 8-Channel Analog Input Module, Allen-Bradley 1794-IE8 FLEX I/O 8-Channel Analog Input, Allen-Bradley 5069-IF8 Compact 5000 8-Channel Analog Input, Allen-Bradley 5094-IB16 FLEX 5000 16-Point DC Input Module, Allen-Bradley 5069-OF8 Compact 5000 8-Ch Analog Output and Allen-Bradley 1756-IF8H ControlLogix HART Analog Input.
Documents and quotation
The linked FLEX 5000 specification document is larger than 10 MB and is linked from the manufacturer site. See other analog modules in the PLC & I/O Cards category. Send the catalog number and quantity to Seven Star LLC, an independent supplier in Muscat, to request a quotation.
Datasheets & Documents
- Technical data Rockwell Automation FLEX 5000 I/O Specifications, publication 5094-TD001 Download
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About brand
Allen-Bradley is the brand of Rockwell Automation for industrial control: ControlLogix and CompactLogix controllers, I/O systems, PanelView operator terminals, PowerFlex drives, motor control and industrial network equipment. The company began in Milwaukee in 1903, when Lynde Bradley and Dr. Stanton Allen formed the Compression Rheostat Company to make the motor speed controller Bradley had invented in 1901. It took the name Allen-Bradley in 1909 and was bought by Rockwell International in 1985. Since 2001 its owner has been Rockwell Automation, which is still headquartered in Milwaukee, Wisconsin.
Allen-Bradley company profile
| Founded | 1903, Milwaukee, Wisconsin, USA, as the Compression Rheostat Company |
|---|---|
| Founders | Lynde Bradley (inventor of the compression rheostat, 1901) and Dr. Stanton Allen (investor); Harry Bradley joined in 1904 |
| Name | Allen-Bradley Company from 1909 |
| Ownership | Acquired by Rockwell International in 1985 for about USD 1.65 billion; a brand of Rockwell Automation (NYSE: ROK) since 2001 |
| Headquarters | Milwaukee, Wisconsin, USA |
| Product families | Logix programmable automation controllers (ControlLogix, CompactLogix), legacy SLC 500 and MicroLogix PLCs, Micro800 controllers, POINT, FLEX and Compact I/O, PanelView HMIs, PowerFlex AC drives, contactors, motor starters and soft starters, safety components, Stratix Ethernet switches |
Milestones
- 1901: Lynde Bradley invents the compression rheostat to control the speed of electric motors.
- 1903: The Compression Rheostat Company is formed in Milwaukee with an initial investment of USD 1,000.
- 1904: Harry Bradley joins; a crane controller is shown at the St. Louis World's Fair.
- 1909: The company is renamed Allen-Bradley.
- 1985: Rockwell International acquires Allen-Bradley.
- 2001: Rockwell Automation becomes the company's name; the Allen-Bradley brand marks 100 years in 2003.
Reading Allen-Bradley catalogue numbers
The first digits of an Allen-Bradley catalogue number identify the platform, which tells you what is compatible with what. 1756 is ControlLogix (chassis-based, used for large process and plant control), 1769 is CompactLogix 5370 with Compact I/O, 5069 is CompactLogix 5380 with Compact 5000 I/O, 1734 is POINT I/O, 1794 and 5094 are FLEX and FLEX 5000 distributed I/O, 1746 and 1747 belong to the older SLC 500 family, 1766 is MicroLogix 1400 and 2080 is Micro800. For drives, 25B is PowerFlex 525 and 22B is PowerFlex 40; in a code such as 25B-D010N114, "D" means 380–480 V, "010" is the output current rating, and N114 instead of N104 means the drive has an integrated EMC filter. Many plants in the region still run SLC 500 and older MicroLogix systems, which Rockwell has discontinued, so exact spares and migration to CompactLogix are both common requests.
Where Allen-Bradley products are used
In Oman and the GCC, Allen-Bradley controllers and drives run on oil and gas facilities, water treatment and pumping stations, cement, food and beverage and packaging plants, and on machines supplied by American OEMs. ControlLogix is often the platform for plant control systems, while PowerFlex drives are used on pumps, fans and conveyors.
Allen-Bradley products we list
| Family | Examples |
|---|---|
| ControlLogix | 1756-L85E, 1756-EN2T, 1756-EN2TR, 1756-IF16, 1756-IB32, 1756-PA75, 1756-A10 |
| CompactLogix and Micro controllers | 5069-L320ER, 5069-L340ERM, 1769-L33ER, 1769-L16ER, MicroLogix 1400, Micro820, SLC 500 (1746) |
| Distributed I/O | 1734-AENTR, 1734-IB8, 1734-IE2C, 1734-IB8S safety, 1794-AENTR, 5094-AENTR, 5069-IF8 |
| Operator terminals | PanelView Plus 7 10-inch, PanelView Plus 7 15-inch, PanelView 800, PanelView 5310 |
| Drives, motor control and networking | PowerFlex 525, PowerFlex 755, PowerFlex 4, 150-A180NBD SMC, Stratix 2000, 1783-NATR |
Ordering Allen-Bradley products: what we need
Send the full catalogue number and the series letter from the label (for example 1756-EN2T Series D), because firmware and compatibility can change between series. For drives, add the motor power, voltage and filter option. For a discontinued SLC 500 or MicroLogix part, tell us whether you need the exact spare or a migration proposal.
Facts checked against Rockwell Automation's published company history, October 2026.
Browse Allen-Bradley products by category: PLC & I/O Cards, AC Drives.
FAQ
Questions about the Allen-Bradley 5094-IY8 FLEX 5000 Universal Analog
Answers from our engineering team on installation, compatibility and integration.
01What signals can the 5094-IY8 measure?
Voltage, current, resistance, RTD, thermocouple and millivolt signals on eight channels.
02What resolution does it have?
16 bits at a 10 Hz notch filter, using two 24-bit converters.
03Does it include terminal bases?
No, the mounting base and terminal base are ordered separately.
04What is the scan time?
360 us per channel, 1.4 ms per group of four.
05Is it HART compatible?
It is not HART compliant by itself; the data sheet suggests an external 250 Ohm resistor.
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