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K8DT-PM

2

Ratings and Specifications

Ratings

Specifications

*

Certification is pending for LR.

Rated input voltage

K8DT-PM1

@

N: Three-phase, three-wire Mode: 

200, 220, 230, or 240 VAC
K8DT-PM2

@

N: Three-phase, three-wire Mode: 

380, 400, 415, or 480 VAC

Input load

K8DT-PM1: Approx. 1.7 VA
K8DT-PM2: Approx. 2.7 VA

Rated insulation 
voltage

528 VAC

Operating value setting 
range

Overvoltage

30% to 30% of rated input voltage

Undervoltage

30% to 30% of rated input voltage

Note:

The rated input voltage can be switched 
by using the DIP switches.

Operating value

Operates at 100% of set value.

Reset value

5% of operating value (fixed)

Reset method

Automatic reset

Operating 
time 
setting 
range

Overvoltage/
Undervoltage

0.1 to 30 s

Phase 
sequence

0.1 s

0.05 s

Phase loss

0.1 s max.

Power ON lock time

1 s

5 s (switched by using the DIP switch)

Indicators

Power (PWR): Green, Output (OUT): Yellow, 
OVER: Red, UNDR: Red

Output form

Relay: SPDT contact output
Transistor: Open collector

Output relay ratings

Rated load

5 A at 250 VAC (Resistive load)
5 A at 30 VDC (Resistive load)
1 A at 250 VAC (Inductive load)
0.2 A at 48 VDC (Inductive load)

Minimum load: 5 VDC, 10 mA (reference values)
Mechanical life: 10 million operations min.
Electrical life: 5 A at 250 VAC or 30 VDC: 

50,000 operations
3 A at 250 VAC or 30 VDC: 
100,000 operations

Transistor output 
ratings

Contact form: SPST-NO (Open collector)
Rated voltage: 24 VDC (maximum voltage: 26.4 VDC)
Maximum current: 50 mA DC

Ambient operating 
temperature

20 to 60°C (with 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)

Altitude

2,000 m max.

Applicable wires

Stranded wires, solid wires, or ferrules

Applicable wire size

0.25 to 1.5 mm

2

 (AWG24 to AWG16)

Wire insertion force

8 N max. for AWG20 wire

Screwdriver 
insertion force

15 N max.

Wire stripping length

8 mm

Ferrule length

8 mm

Current capacity

10 A (per pole)

Number of insertions

50 times

Case color

N1.5

Case material

PC, UL 94 V-0

Weight

Approx. 100 g

Mounting

Mounts to DIN Track, or screw mounting

Dimensions

17.5 

 90 

 90 mm (W

D

H)

Input frequency

50/60 Hz

Overload capacity

Continuous 528 V

Repeat 
accuracy

Operating 
value

0.5% full scale (at 25

C and 65% humidity, rated 

power supply voltage)

Operating 
time

50 ms (at 25

C and 65% humidity, rated power 

supply voltage)

Applicable 
standards

Conforming 
standards

EN 60947-5-1
Installation environment (pollution level 2, 
Overvoltage category III)

EMC

EN 60947-5-1

Safety 
standards

UL 60947-5-1 (Listing), Korean Radio Waves Act 
(Act 10564), CCC (GB14048.5), LR (Category 
ENV1.2) 

*

Insulation resistance

20 M

 min.

Between external terminals and case
Between input terminals and output terminals

Dielectric strength

2,000 VAC for one minute

Between external terminals and case
Between input terminals and output terminals

Noise immunity 

1,500 V power supply terminal common/normal 
mode
Square-wave noise of 1 

s/100 ns pulse width 

with 1-ns rise time

Impulse withstand 
voltage

6 kV (between live terminals and exposed, non-
charged metal parts)

Vibration resistance

Frequency: 10 to 55 Hz, 0.35-mm single 
amplitude, acceleration 50 m/s

2

10 sweeps of 5 min each in X,Y, and Z directions

Shock resistance

100 m/s

2

, 3 times each in 6 directions along 3 

axes

Degree of protection

Terminals: IP20

Summary of Contents for K8DT-PM

Page 1: ...h America Certification is pending for LR standards Models added with transistor outputs for superior contact reliability RoHS compliant Ordering Information Three phase Voltage and Phase sequence Pha...

Page 2: ...bient operating humidity 25 to 85 RH with no condensation Storage humidity 25 to 85 RH with no condensation Altitude 2 000 m max Applicable wires Stranded wires solid wires or ferrules Applicable wire...

Page 3: ...nd after an incorrect phase is detected and once per 0 5 second during the detection time K8DT PM1 C N L1 14 L2 11 12 L3 DIP SW Inside Inside 2 Output C Relay Output T Transistor Output 14 11 12 14 11...

Page 4: ...ck See Note Terminal block See Note Power indicator Output status indicator Overvoltage knob OVER Undervoltage knob UNDR Operating time knob T Alarm indicator 8 mm 8 mm Solid Wire 8 mm Stranded Wires...

Page 5: ...R The undervoltage can be set to between 30 and 30 of the rated input Turn the knob while there is an input to the input terminals until the alarm indicator flashes when the set value and the input ha...

Page 6: ...0 Three phase Voltage and Phase sequence Phase loss Relays K8DT PM1 K8DT PM2 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 parentheses...

Page 7: ...rminals is 120 of the set value for overvoltage detection or 80 of the set value for undervoltage detection when the auxiliary relay in connection diagram 2 operates Close the switch and use a cycle c...

Page 8: ...tected 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 dete...

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: ...rom 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 ci...

Page 12: ...maximum applied voltage for the clearance solid insulation and other factors There is basic insulation between the input terminals and output terminals Operating section must have reinforced or doubl...

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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