Omron K8AC-H2 Manual Download Page 19

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K8AC-H

Dimensions

(Unit: mm)

Digital Heater Element Burnout Detectors

Recommended Tools

Recommended Flat-blade Screwdriver

Manufacturer: Phoenix Contact
Model number: SZF0.4

2.5

Crimper for Bar Terminals (Crimping Tool)

Manufacturer: Phoenix

Contact

Model number: CRIMPF0X UD6
Recommended power line diameters: AWG10 to AWG24

Recommended Crimp Terminals

Note: Securely tighten the terminal screws to the following torque:

Power supply terminals: 0.5 N·m
I/O terminals:

0.23 N·m

2.1

1.7

4.5

100

K8AC-H2

@@@

-FLK

To remove a wire, insert the recom-
mended flat-blade screwdriver
straight into the hole under the screw-
less clamp terminal of the wire, and
simply release the wire.

100

K8AC-H1

@@@

-FLK

Terminals

Recommended crimp terminals

Recom-

mended

wire gauge

1 and 2

M3 crimp terminals (Width: 5.8 mm max.)

AWG16 to
AWG18

3 to 14

M2 bar terminals: Al 0.34-8TQ (Phoenix Contact)

AWG22

M2 bar terminals: Al 0.5-8WH (Phoenix Contact)

AWG20

M2 bar terminals: Al 0.75-8GY (Phoenix Contact)

AWG18

5.8 mm max.

Summary of Contents for K8AC-H2

Page 1: ...different heater capacities Using heaters with varying heater resistance e g halogen heaters Features High precision Heater Burnout Alarms with High resolution Digital Measurement Burnout Alarm Possi...

Page 2: ...e linked with the control output value from the temperature controller Compatible with Gradient Settings of Power Controllers When using gradient settings with a power controller set a gate current le...

Page 3: ...tput specifi cations Com munica tions output Current input range 0 200 to 2 200 A 2 00 to 22 00 A 20 0 to 200 0 A 100 to 240 VAC ON OFF control SSR control Two current inputs for either single phase o...

Page 4: ...200 ms min Input impedance 4 k min Cyclic and phase con trol 4 to 20 mA DC Burnout detection is possible for an input of 7 mA or greater Input impedance 50 max Outputs Relay contact outputs K8AC H C...

Page 5: ...inals CT primary terminals and gate input terminals communications terminals Between power supply terminals CT primary terminals and output terminals Between gate input terminal communications termina...

Page 6: ...VAC 0 3 A 30 VDC 1 A Maximum contact voltage 125 VAC 60 VDC Maximum contact current 1 A Maximum switching capaci ty 37 5 VA 30 W Minimum applicable load failure rate P value refer ence value 5 VDC 10...

Page 7: ...ct to the operating power supply All models 3 to 4 5 to 6 Outputs Outputs SSR open or short circuit detection results Outputs heater burnout or layer short circuit detection results K8AC H2 N transist...

Page 8: ...CTs for three phase heaters For three phase heaters always set the burnout alarm set values for both CT1 and CT2 5 6 3 4 Transistor Output K8AC H2 N FLK CT2 CT1 3 7 8 9 10 11 12 13 14 1 2 RS 485 X 4 5...

Page 9: ...Transistor Output K8AC H2 N FLK Heater Power supply Power Regulator Temperature Controller 4 to 20 mA current output Operation Description If the heater current detected at either CT1 or CT2 falls bel...

Page 10: ...o after one heater burns out with the current prior to the burnout i e the normal current taken as 1 3 In actual operation there may be effects from factors such as load heater imbalances so conduct a...

Page 11: ...m is output accordingly SSR Short Circuit Detection If current is measured when there is no gate input an SSR short circuit error is detected and an alarm is output SSR Open Circuit Detection If curre...

Page 12: ...Short Open Circuit Alarm Using the Power Regulator s Gradient Settings The power regulator s gradient settings can be used to prevent malfunction by setting the operation gate current level The relati...

Page 13: ...urs open or short circuit OFF when SSR is normal ALM Alarm Lights for heater burnout or overcurrent OFF at all other times Up key Increments a set value when the set value is in change status Down key...

Page 14: ...pe P should be selected Type P is also selected for cyclic control Select the appropriate relay or transistor output specifications depending on the application K8AC H Parameter Settings Procedure Onl...

Page 15: ...open and short circuits and heater layer shorts The count is refreshed each time an alarm is output and it is saved in non volatile memory The value is saved when power is interrupted The number of o...

Page 16: ...r at least 1s Press the L key for at least 1 s Press the S key for at least 1 s Press the L key for at least 1s When the key is released Press the S key for at least 1 s Press the L and M keys Press t...

Page 17: ...etting value 1 Heater layer short circuit detection function SSR open circuit detection function SSR short circuit detection function Output ON delay time Soft startup time Startup lock time Gate inpu...

Page 18: ...ction function ON and OFF ssht ON OFF OFF SSR Open Circuit Detection Turns the SSR open circuit detection function ON and OFF sopn ON OFF OFF Heater Layer Short Circuit Detection Overcurrent Detection...

Page 19: ...following torque Power supply terminals 0 5 N m I O terminals 0 23 N m 35 2 1 1 7 4 5 6 100 90 K8AC H2 FLK To remove a wire insert the recom mended flat blade screwdriver straight into the hole under...

Page 20: ...ories with K8AC CT20L Connection Example Contact Approx 3 dia 18 22 Approx 6 dia Plug Contact Lead Plug 100 15 30 30 5 Two M3 Depth 4 max 12 dia 40 40 5 15 Current Transformer K8AC CT200 Pre wired Lea...

Page 21: ...se unintended operation and may result in accident or corruption of the product 3 Do not use thinner or similar solvent for cleaning Use commercial alcohol 4 When discarding properly dispose of the pr...

Page 22: ...he current measurement value with the heater output at 100 This is because the burnout detection alarm of the K8AC H P FLK depends on the control input When you set the burnout alarm value make sure t...

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