Omron K8AC-H11CC-FLK Manual

Digital Heater Element Burnout Detector
K8AC-H
A high-precision Heater Element
Burnout Detector compatible with a
wide-range of heater control methods.
• Push-in terminals reduce the workload. *1
• Scaling *1
• NPN or PNP equivalent output. *1
• Lineup includes models compatible with many heater control methods,
including ON/OFF control, phase control, and cyclic control.
• High-precision heater burnout alarm with digital measurement.
• Contributes to preventative maintenance.
• If the gate function is disabled, the gate input can be used as an
undercurrent/overcurrent relay or for motor or lamp loads.
• Undercurrent detection values can be set separately for CT1 and
CT2. *2
• CE marking and cUL certified (K8AC-H2@@@).
*1. K8AC-H2@@@ Series only.
*2. The overvoltage detection value is the same for the CT1 and CT2. Also, there
is one undercurrent output.
Note: 1. Consult with your OMRON representative before using the K8AC with
phase control or cyclic control under the following conditions.
• Using multiple heaters with different heater capacities
• Using heaters with varying heater resistance (e.g., halogen heaters)
2. The K8AC-H is designed to monitor for element burnouts on heaters
controlled with power regulators that used a three-alarm method.
Normal monitoring is not possible for circuits that use a power regulator with a six-alarm method.
Features
High-precision Heater Burnout Alarms with
High-resolution Digital Measurement
Burnout Alarm Possible for One of Multiple
Heater Elements
Heater burnout is detected by digitally processing minor current
fluctuations.
RST
G3PE
Three-phase
SSR
Current Transformer
Electric
oven
Three-phase
delta-connected heater
Push-in Terminals for Reduced Wiring Work
(K8AC-H2@@@ Series Only)
Push-in terminals have no screws to come loose, which eliminates
the need to control screw tightening torque and retighten screws and
helps to reduce your workload.
E5@@
Digital
Temperature
Controller
Easily connect terminals using ferrules with insulation sleeves.
Easy Scaling Using the External CT Ratio
and Number of CT Passes
(K8AC-H2@@@ Series Only)
Easily set the scaling just by inputting (1) the CT ratio and (2) the
number of CT passes.
K8AC-H@
Digital Heater
Element Burnout
Detector
Wide Current Input Range: 0.200 to 200.0 A AC.
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
External
CT
@A/1A
K8AC-CT@
(1) CT ratio
Current Transformer
(2) Number of CT passes
Heater
1