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Single-phase Overvoltage/Undervoltage Relay
K8DT-VW
Detect abnormal voltages applies to equipment to
protect against equipment failure.
Monitor for overvoltages and undervoltages
simultaneously with one Relay.
• Monitor AC or DC voltages with one Relay.
• Settings for the operating value, hysteresis, and operating time.
• Width of 17.5 mm to reduce space required in panels.
• Push-In Plus Terminal that reduce wiring work.
The use of cage clamps enables wiring with bare stranded wires.
Double-insertion holes for crossover wiring (all terminals).
• UL listed for easy shipping to North America.
• Models added with transistor outputs for superior contact reliability.
Refer to Safety Precautions on page 8.
Refer to page 7 for commonly asked questions.
Ordering Information
Single-phase Overvoltage/Undervoltage Relay
Setting range
1 to 10 V AC/DC
3 to 30 V AC/DC
15 to 150 V AC/DC
20 to 200 V AC/DC
30 to 300 V AC/DC
60 to 600 V AC/DC
Options (Order Separately)
Front Cover
Appearance
Model
Y92A-D1A
Ratings and Specifications
Input Range
Range *
Model
0 to 10 V AC/DC
K8AK-VW2@@
0 to 30 V AC/DC
0 to 150 V AC/DC
0 to 200 V AC/DC
K8AK-VW3@@
0 to 300 V AC/DC
0 to 600 V AC/DC
* The range is selected using connected terminals.
Power supply voltage
Relay: SPDT contact output
24 VAC/DC
Relay: SPDT contact output
100 to 240 VAC
Relay: SPDT contact output
24 VAC/DC
Relay: SPDT contact output
100 to 240 VAC
Connection terminal
V1-COM
1 to 10 V AC/DC
V2-COM
3 to 30 V AC/DC
V3-COM
15 to 150 V AC/DC
V1-COM
20 to 200 V AC/DC
V2-COM
30 to 300 V AC/DC
V3-COM
60 to 600 V AC/DC
Output
Transistor
Transistor
Transistor
Transistor
Setting range
Input impedance
Approx. 120 kΩ
Approx. 320 kΩ
Approx. 1.6 MΩ
Approx. 1.2 MΩ
Approx. 1.7 MΩ
Approx. 3.1 MΩ
For the most recent information on models
that have been certified for safety
standards, refer to your OMRON website.
Model
K8DT-VW2CD
K8DT-VW2TD
K8DT-VW2CA
K8DT-VW2TA
K8DT-VW3CD
K8DT-VW3TD
K8DT-VW3CA
K8DT-VW3TA
Overload capacity
Continuous input at 115% of
maximum input.
10 s at 125%
(up to 600 VAC)
1
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Table of Contents
Related Manuals for Omron K8DT-VW
Summary of Contents for Omron K8DT-VW
- Page 1 • Models added with transistor outputs for superior contact reliability. For the most recent information on models that have been certified for safety Refer to Safety Precautions on page 8. standards, refer to your OMRON website. Refer to page 7 for commonly asked questions. Ordering Information Single-phase Overvoltage/Undervoltage Relay...
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Page 2: Specifications
K8DT-VW Ratings Specifications Power supply K8DT-VW@@D: 24 VAC 50/60 Hz, 24 VDC Allowable operating 85% to 110% of rated power supply voltage voltage K8DT-VW@@A: 100 to 240 VAC 50/60 Hz voltage range 24 VAC/DC: 1.8 VA/1 W max. Allowable operating... -
Page 3: Wiring Example
K8DT-VW Connections Terminal Diagram K8DT-VW2 C A (3) Power Supply Voltage (1) (2)(3) A: 100 to 240 VAC D: 24 VAC/DC (No polarity) (1) Voltage Input 150V max. 600V max. 30V max. 300V max. 10V max. 200V max. (2) Output... -
Page 4: Timing Charts
Power ON lock (1 s or 5 s) t1: Power ON lock (1 s or 5 s) Note: 1. The K8DT-VW@ output is normally operative. Note: 1. The K8DT-VW@ output is normally operative. 2. The power ON lock prevents unnecessary alarms from being 2. -
Page 5: Dip Switch Settings
K8DT-VW Operation Methods Setting Ranges and Wiring Connections Model Setting range Wiring connection 1 to 10 V AC/DC V1-COM K8DT-VW2 3 to 30 V AC/DC V2-COM 15 to 150 V AC/DC V3-COM 20 to 200 V AC/DC V1-COM K8DT-VW3 30 to 300 V AC/DC... - Page 6 K8DT-VW Setting Method Setting Voltage Operating Time The voltage knob (AL1 and AL2) is used to set the voltage. The operating time is set using the operating time knob (T). The voltage can be set to 10% to 100% of the maximum setting The operating time can be set to between 0.1 and 30 s.
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Page 7: Questions And Answers
Gradually decrease the input from 120% of the set value and check the operation using the same method as for overvoltage. Example: Overvoltage Operating Mode, Undervoltage Operating Mode and an Operating Time of 5 s Note: K8DT-VW@ output relays are normally operative. Set value Input voltage Flashing Alarm indicator... -
Page 8: Safety Precautions
K8DT-VW Safety Precautions Be sure to read the precautions for all models in the website at the following URL: http://www.ia.omron.com/. Warning Indications !WARNING Indicates a potentially hazardous situation which, if not avoided, will result Electrical shock may occasionally cause serious injury. Confirm... - Page 9 K8DT-VW 30.To prevent wiring materials from smoking or igniting, confirm wire Precautions for Safe Use ratings and use the wiring materials given in the following table. 1. Do not use or store the product in the following locations. Stripping length...
- Page 10 K8DT-VW Screw Mounting Connecting Stranded Wires 1. Pull out the two hooks on the back of the Relay to the outside until Use the following procedure to connect the wires to the terminal block. you hear them click in place.
- Page 11 Phoenix Contact 2,5 * SZF 0-0,4 × × 75 302 Wiha × AEF.2,5 Facom 210-719 Wago × × SDI 0.4 Weidmuller * OMRON's exclusive purchase model XW4Z-00B is available to × order as SZF 0-0,4 2,5 (manufactured by Phoenix Contact).
- Page 12 MEMO...
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Page 13: Terms And Conditions Agreement
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate it to actual application requirements. - Page 14 The Netherlands Hoffman Estates, IL 60169 U.S.A. Tel: (31)2356-81-300/Fax: (31)2356-81-388 Tel: (1) 847-843-7900/Fax: (1) 847-843-7787 © OMRON Corporation 2016 All Rights Reserved. OMRON (CHINA) CO., LTD. OMRON ASIA PACIFIC PTE. LTD. In the interest of product improvement, Room 2211, Bank of China Tower, No.