Digital Heater Element Burnout Detector
K8AC-H
A high-precision Heater Element Burnout
Detector compatible with a wide-range of
heater control methods.
• Compatible with contactor, SSR, cyclic control, and phase
control methods.
• Compatible with a wide range of heater capacities, from 0.200 to
200.0 A AC (range covered by 3 models)
• Voltage fluctuation compensation function enables accurate
heater burnout detection, because power supply voltage
fluctuations resulting in heater current fluctuation will not cause
faulty outputs.
• Detects burnouts for even one heater when using multiple
heaters.
• If the gate function is disabled, the gate input can be used as an
undercurrent/overcurrent relay or for motor or lamp loads (2
circuits).
• CE Marking.
• Contributes to preventative maintenance for heater burnout.
Note: Consult with your OMRON representative before using phase and
cyclic control under the following conditions.
• Using multiple heaters with different heater capacities
• Using heaters with varying heater resistance (e.g., halogen
heaters)
Features
Compatible with Many Heater Control
Methods
The K8AC-H detects burnouts for cyclic and phase control heaters,
which could not be detected by the K2CU.
One Digital Heater Element Burnout Detector can handle single-
phase or three-phase heaters.
Type
ON/OFF control
(connector/SSR)
Item
K8AC-H@@C@-FLK
Single-phase heater
Three-phase heater
Applicable to Wide Current Range
Current can be measured between 0.200 and 200.0 A using an
external current transformer.
Model
K8AC-H11@
Item
Current
0.200 to 2.200 A
measurement range
AC
Appropriate Current
K8AC-CT20S
Transformer model
K8AC-CT20L
Cyclic
Phase
control
control
K8AC-H@@P@-FLK
K8AC-H12@
K8AC-H13@
2.00 to 22.00 A
20.0 to 200.0 A
AC
AC
K8AC-CT20S
K8AC-CT200
K8AC-CT200L
K8AC-CT20L
Monitors Heater Current
The heater current can be checked on the main display. Error status,
such as that for heater burnout alarms, can also be displayed on the
character display.
Measurement values
· Heater current
· Power supply voltage
Error display
· Heater burnout detection
· Overcurrent detection
· SSR short circuit detection
· SSR open circuit detection
Voltage Fluctuation Compensation
Function
The voltage fluctuation compensation function enables accurate
heater burnout detection, because power supply voltage fluctuations
resulting in heater current fluctuation will not cause faulty outputs.
This function is required when detecting minor current fluctuations.
High-precision Heater Burnout
Detection
Digital settings enable high-precision heater burnout detection.
High-precision threshold value setting is possible using current
measurement value display.
CSM_K8AC-H_DS_E_5_1
Main display
1
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