Omron K8DT-PZ Series Manual

Omron K8DT-PZ Series Manual

Three-phase voltage, asymmetry, and phase-sequence phase-loss relay

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Three-phase Voltage, Asymmetry, and Phase-sequence Phase-loss Relay
K8DT-PZ
Protect motors and other equipment from unstable
voltages in the power supply system.
Detect overvoltages, undervoltages, voltage
asymmetry, phase sequence, and phase loss for
three-phase power supplies.
• Phase loss detection while the motor is operating.
• Global power supply support. (Changed with a switch.)
• Greater resistance to inverter noise.
• Width of 17.5 mm to reduce space required in panels.
• Push-In Plus Terminal Blocks 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.
• Certification is pending for LR standards.
• Models added with transistor outputs for superior contact reliability.
Refer to Safety Precautions on page 9.
Refer to pages 7 to 8 for commonly asked questions.
Ordering Information
Three-phase Voltage, Asymmetry, and Phase-sequence Phase-loss Relay
Rated input voltage *
3-phase 3-wire mode 200, 220, 230, 240 VAC
3-phase 3-wire mode 380, 400, 415, 480 VAC
Note: The input range is set with a rotary switch.
* The power supply voltage is the same as the rated input voltage.
Options (Order Separately)
Front Cover
Appearance
Model
Y92A-D1A
For the most recent information on models
that have been certified for safety
standards, refer to your OMRON website.
Output
Relay: SPDT contact output
Transistor: NPN output
Relay: SPDT contact output
Transistor: NPN output
Model
K8DT-PZ1CN
K8DT-PZ1TN
K8DT-PZ2CN
K8DT-PZ2TN
1

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Summary of Contents for Omron K8DT-PZ Series

  • Page 1 For the most recent information on models that have been certified for safety Double-insertion holes for crossover wiring (all terminals). standards, refer to your OMRON website. • UL listed for easy shipping to North America. • Certification is pending for LR standards.
  • Page 2: Specifications

    Screwdriver insertion 15 N max. force Wire stripping length 8 mm Ferrule length 8 mm XW4Z-00B (Omron) Recommended flat- SZF 0.4 × 2.5 (Phoenix Contact) blade screwdriver 210-719 (Wago) SDI 0.4 × 2.5 × 75 (Weidmuller) Current capacity 10 A (per pole)
  • Page 3: Terminal Diagram

    K8DT-PZ Connections Terminal Diagram K8DT-PZ1 C N (1) (2) (1) Input Voltages Phase-to-phase voltage: Phase-to-phase voltage: 200 to 240 VAC 380 to 480 VAC 3-phase, 3-phase, power power (2) Output supply supply C: Relay Output T: Transistor Output DIP SW Inside Inside Note: Do not connect anything to terminals that are shaded in gray.
  • Page 4: Operation Methods

    K8DT-PZ Nomenclature Front Indicators Item Meaning Power indicator Terminal block Lit when power is being supplied. * (PWR: Green) (See note.) Output status indicator Lights for output (lit for normal operation) (Output: Yellow) • Lights for overvoltage/undervoltage error. When the voltage exceeds the set value, the indicator flashes for the operating time to Asymmetry rate knob Power indicator...
  • Page 5: Dip Switch Settings

    K8DT-PZ DIP Switch Settings The Power ON lock time, rated voltage are set using the DIP switch located on the front of the Unit. The K8DT-PZ@ does not have SW2. Note: Open the DIP switch cover to set the DIP switch. Keep the DIP switch cover closed while the power supply to the Relay is ON.
  • Page 6 K8DT-PZ Dimensions (Unit: mm) Three-phase Voltage, Asymmetry, and Phase-sequence Phase-loss Relays K8DT-PZ1 K8DT-PZ2 17.5 Options (Order Separately) Front Cover Y92A-D1A 52.7 17.5 5.85 Optional Parts for DIN Track Mounting DIN Tracks PFP-100N ±0.15 PFP-50N ±0.3 ±0.15 15(5) * 1000(500) * * Dimensions in parentheses are for the PFP-50N.
  • Page 7: Questions And Answers

    K8DT-PZ Questions and Answers Checking Operation How to Measure the Operating Time Overvoltage Overvoltage Gradually increase the input from 80% of the set value. The Change the input value quickly from 70% to 120% of the set input will equal the operating value when the input exceeds value and measure the time required for the Relay to operate.
  • Page 8 K8DT-PZ Questions and Answers Load-side Phase Loss Is an overvoltage detected if only one of the three- phase phase-to-phase voltages exceeds the over- In principle, phase loss cannot be detected on the load side voltage set value? because the K8DT-PZ measures three-phase voltage to determine phase loss.
  • Page 9: Safety Precautions

    K8DT-PZ 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 Indicates a potentially hazardous !WARNING situation which, if not avoided, will result Electrical shock may occasionally cause serious injury. Confirm...
  • Page 10: Precautions For Safe Use

    K8DT-PZ 29.To prevent wire materials from smoking or igniting, use the wiring Precautions for Safe Use materials given in the following table. 1. Do not use or store the product in the following locations. Stripping length • Locations subject to water, or oil Recommended wire Without With Ferrules...
  • Page 11: Checking Connections

    K8DT-PZ 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. 1.
  • Page 12 The following table shows manufacturers and models as of 2015/Dec. Reinforced insulation (Double insulation) Side Front 2.5 mm dia. 0.4 mm 2.5 mm Model Manufacturer XW4Z-00B Omron ESD0.40✕2.5 Wera SZF 0.4✕2.5 Phoenix Contact 0.4✕2.5✕75 302 Wiha AEF.2.5✕75 Facom 210-719 Wago SDI 0.4✕2.5✕75...
  • 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.

This manual is also suitable for:

K8dt-pz1cnK8dt-pz1tnK8dt-pz2cnK8dt-pz2tn

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