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Omron K8AC-H22PN-FLK — Process / Temperature Controllers

Omron K8AC-H22PN-FLK Heater Element Detector, 2~22A

MPNK8AC-H22PN-FLK
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Omron K8AC-H series, Heater Element Detector, order code K8AC-H22PN-FLK, input range 2~22A, RS-485 communications, DIN rail mount, spring terminal.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

K8AC-H22PN-FLK — Identification
ParameterValue
SeriesK8AC-H
TypeHeater Element Detector
K8AC-H22PN-FLK — Electrical
ParameterValue
Supply voltage85 ~ 264VAC
K8AC-H22PN-FLK — I/O
ParameterValue
Input range2 ~ 22A
Output typeSolid State (2)
K8AC-H22PN-FLK — Communication
ParameterValue
Communication interfacesRS-485 (CompoWay/F)
K8AC-H22PN-FLK — Performance
ParameterValue
FeaturesHeater Fault Detection
K8AC-H22PN-FLK — Display
ParameterValue
Display typeLED - Red Characters
Characters per row4
K8AC-H22PN-FLK — Environmental
ParameterValue
Operating temperature-10°C~55°C
K8AC-H22PN-FLK — Mechanical
ParameterValue
Mounting typeDIN Rail
Termination styleSpring Terminal
K8AC-H22PN-FLK — Other specifications
ParameterValue
Weight0.441 lb (200.03 g)

Product details

Heater current monitor for DIN-rail panels

The Omron K8AC-H22PN-FLK is a dedicated heater element detector from the K8AC-H series, designed to monitor current draw of resistive heating elements and signal a fault when the load drops below the set threshold. Its 2 ~ 22A input range covers the typical draw of multiple cartridge or band heaters in a single zone, and the two solid-state outputs can drive an alarm or trigger a PLC input directly.

RS-485 monitoring and 85~264 VAC supply

The unit communicates over RS-485 using the Omron CompoWay/F protocol, so it can report heater current values and alarm status back to a PLC or SCADA host without pulling a separate analog input for each zone. The 85 ~ 264 VAC supply range means it works on common global line voltages without a step-down transformer. A 4-digit red LED display shows the measured current in amperes, readable from a few metres across the panel.

Frequently asked questions

What is the input current range of K8AC-H22PN-FLK?

The input range is 2 ~ 22A, covering the typical load of multiple resistive heater elements in a single zone. The detector trips when the current falls below the set threshold, indicating an open or failed heater.

Does K8AC-H22PN-FLK support RS-485 communication?

Yes, it communicates over RS-485 using the Omron CompoWay/F protocol, allowing heater current and alarm status to be read by a PLC or SCADA host.

How to wire K8AC-H22PN-FLK spring terminals?

The spring-clamp terminals accept solid or ferruled stranded wire. Insert a small screwdriver into the square release hole to open the clamp, insert the stripped wire, then remove the screwdriver to close the clamp on the conductor. No screw tightening required.

MPN
K8AC-H22PN-FLK