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K8DT-PZ

11

Screw Mounting

1.

Pull out the two hooks on the back of the Relay to the outside until 

you hear them click in place.

2.

Insert M3 screws into the hook holes and secure the Relay.

Adjusting the Setting Knobs

• Use a flat-blade screwdriver to adjust the setting knobs. The knobs 

have a stopper that prevents them from turning beyond the full right 
or left position. Do not force a knob beyond these points.

• To reduce the error in the setting knob, always turn the setting knob 

from the minimum setting toward the maximum setting.

Connecting Wires to the Push-In Plus Terminal Block

Part Names of the Terminal Block

Connecting Wires with Ferrules and Solid Wires

Insert the solid wire or ferrule straight into the terminal block until the 
end strikes the terminal block.

If a wire is difficult to connect because it is too thin, use a flat-blade 
screwdriver in the same way as when connecting stranded wire.

Connecting Stranded Wires

Use the following procedure to connect the wires to the terminal block.

1.

Hold a flat-blade screwdriver at an angle and insert it into the 

release hole. The angle should be between 10° and 15°.

If the flat-blade screwdriver is inserted correctly, you will feel the 

spring in the release hole respond.

2.

With the screwdriver still inserted into the release hole, insert the 

wire into the terminal hole until it strikes the terminal block.

3.

Remove the flat-blade screwdriver from the release hole.

Checking Connections

• After the insertion, pull gently on the wire to make sure that it will 

not come off and the wire is securely fastened to the terminal block.

• To prevent short circuits, insert the stripped part of a stranded or 

solid wire or the conductor part of a ferrule until it is hidden inside 
the terminal insertion hole. (See the following diagram.)

Removing Wires from the Push-In Plus Terminal Block

Use the following procedure to remove wires from the terminal block.
The same method is used to remove stranded wires, solid wires, and 
ferrules.

1.

Hold a flat-blade screwdriver at an angle and insert it into the 

release hole.

2.

With the flat-blade screwdriver still inserted into the release hole, 

remove the wire from the terminal insertion hole.

3.

Remove the flat-blade screwdriver from the release hole.

(1)

(1)

(2)

(2)

Two M3 screw holes or
two 3-dia. holes

108

Mounting Hole Dimensions

Note: 1.

Pull out the hooks to mount

the Relay with screws.

2.

Recommended tightening 

torque: 0.5 to 0.6 N·m.

Setting knob

Release hole

Terminal 
(Insertion) hole

Release hole

Terminal 
(Insertion) hole

<Upper side>

<Lower side>

Ferrule

Release hole

Terminal 
(Insertion) hole

Ferrule

Release hole

Terminal 
(Insertion) hole

<Upper side>

<Lower side>

Wire

Flat-blade screwdriver

(1)

(3)

(2)

Wire

Flat-blade screwdriver

(1)

(2)

(3)

10 to 15°

10 to 15°

Flat-blade 
screwdriver

Flat-blade 
screwdriver

<Upper side>

<Lower side>

Ferrule

Ferrule

<Upper side>

<Lower side>

Wire

<Lower side>

Wire

<Upper side>

Wire

Flat-blade screwdriver

(1)

(3)

(2)

Wire

Flat-blade screwdriver

(1)

(2)

(3)

10 to 15°

10 to 15°

Flat-blade 
screwdriver

Flat-blade 
screwdriver

<Upper side>

<Lower side>

Summary of Contents for K8DT-PZ Series

Page 1: ...easy shipping to North America Certification is pending for LR standards Models added with transistor outputs for superior contact reliability Ordering Information Three phase Voltage Asymmetry and Ph...

Page 2: ...h no condensation or icing Storage temperature 25 to 65 C with no condensation or icing Ambient operating humidity 25 to 85 RH with no condensation Storage humidity 25 to 85 RH with no condensation Al...

Page 3: ...Fixed at 2 Lit Flashing Lit Flashing Lit Flashing L1 Input L2 L3 Alarm indicator Contacts 11 14 or transistor output Lit Lit Lit L2 L1 L3 Flashing Asymmetry set value Delay time 250 ms reference value...

Page 4: ...s designed only to output a signal when an error is detected Power indicator Output status indicator Asymmetry rate knob ASY Overvoltage undervoltage knob OV UV Operating time knob T Alarm indicator T...

Page 5: ...o 10 the asymmetry operating voltage would be 20 V and an alarm would be output when the difference between the highest and lowest phase to phase voltages exceeds 20 V Overvoltage Undervoltage Overvol...

Page 6: ...phase Voltage Asymmetry and Phase sequence Phase loss Relays K8DT PZ1 K8DT PZ2 Options Order Separately Front Cover Y92A D1A 52 7 3 5 1 8 17 5 5 85 DIN Tracks PFP 100N PFP 50N Dimensions in parenthes...

Page 7: ...DT terminals is 120 of the set value for overvoltage detection 80 of the set value for undervoltage detection or equal to or greater than the asymmetry operating value when the auxiliary relay in conn...

Page 8: ...ed because the motor terminal voltage does not drop very much even if a phase is lost when the load on the motor is light To detect motor load phase loss during operation use the undervoltage detectio...

Page 9: ...alarm outputs may fail to operate This may result in physical damage to the facilities equipment or other devices that are connected to it To reduce this risk inspect the Relay regularly To maintain s...

Page 10: ...e terminal block may be damaged 25 Insert a flat blade screwdriver into the release holes at an angle The terminal block may be damaged if the screwdriver is inserted straight in 26 Do not allow the f...

Page 11: ...he release hole Checking Connections After the insertion pull gently on the wire to make sure that it will not come off and the wire is securely fastened to the terminal block To prevent short circuit...

Page 12: ...rced insulation defined in IEC 60664 that is suitable for the maximum applied voltage for the clearance solid insulation and other factors There is basic insulation between the input terminals and out...

Page 13: ...CONNECTED WITH THE PRODUCTS WHETHER SUCH CLAIM IS BASED IN CONTRACT WARRANTY NEGLIGENCE OR STRICT LIABILITY Further in no event shall liability of Omron Companies exceed the individual price of the Pr...

Page 14: ...IL 60169 U S A Tel 1 847 843 7900 Fax 1 847 843 7787 Regional Headquarters OMRON EUROPE B V Wegalaan 67 69 2132 JD Hoofddorp The Netherlands Tel 31 2356 81 300 Fax 31 2356 81 388 Contact www ia omron...

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