Delta DPM-C501L Operating Manual

DI/DO type Power Meter DPM-C501L Operation Manual

Industrial Automation Headquarters

Delta Electronics, Inc.

Taoyuan Technology Center
No.18, Xinglong Rd., Taoyuan District,
Taoyuan City 33068, Taiwan
TEL: [phone] / FAX: [phone]

Asia

Delta Electronics (Shanghai) Co., Ltd.

No.182 Minyu Rd., Pudong Shanghai, P.R.C.
Post code : 201209
TEL: [phone] / FAX: [phone]
Customer Service: 400-820-9595

Delta Electronics (Japan), Inc.

Tokyo O󰀩ce

Industrial Automation Sales Department
2-1-14 Shibadaimon, Minato-ku
Tokyo, Japan 105-0012
TEL: [phone] / FAX: [phone]

Delta Electronics (Korea), Inc.

Seoul O󰀩ce

1511, 219, Gasan Digital 1-Ro., Geumcheon-gu,
Seoul, 08501 South Korea
TEL: [phone] / FAX: [phone]

Delta Energy Systems (Singapore) Pte Ltd.

4 Kaki Bukit Avenue 1, #05-04, Singapore 417939
TEL: [phone] / FAX: [phone]

Delta Electronics (India) Pvt. Ltd.

Plot No.43, Sector 35, HSIIDC Gurgaon,
PIN 122001, Haryana, India
TEL: [phone] / FAX : [phone]

Delta Electronics (Thailand) PCL.

909 Soi 9, Moo 4, Bangpoo Industrial Estate (E.P.Z),
Pattana 1 Rd., T.Phraksa, A.Muang,
Samutprakarn 10280, Thailand
TEL: [phone] / FAX : [phone]

Delta Energy Systems (Australia) Pty Ltd.

Unit 20-21/45 Normanby Rd., Notting Hill Vic 3168, Australia
TEL: [phone]

Americas

Delta Electronics (Americas) Ltd

.

Raleigh O󰀩ce

P.O. Box 12173, 5101 Davis Drive,
Research Triangle Park, NC 27709, U.S.A.
TEL: [phone] / FAX: [phone]

Delta Greentech (Brasil) S/A

São Paulo O󰀩ce
Rua Itapeva, 26 – 3˚ Andar - Bela Vista

CEP: 01332-000 – São Paulo – SP - Brasil
TEL: [phone]

Delta Electronics International Mexico S.A. de C.V.

Mexico O󰀩ce

Vía Dr. Gustavo Baz No. 2160, Colonia La Loma,
54060 Tlalnepantla Estado de Mexico
TEL: [phone] #3050/3052

*We reserve the right to change the information in this catalogue without prior notice.
DPM-093AB20-01

EMEA

Delta Electronics (Netherlands) BV

Eindhoven O󰀩ce

De Witbogt 20, 5652 AG Eindhoven, The Netherlands
MAIL: [e-mail]
MAIL: [e-mail]

Delta Electronics (France) S.A.

ZI du bois Chaland 2 15 rue des Pyrénées,
Lisses 91056 Evry Cedex, France
MAIL: [e-mail]

Delta Electronics Solutions (Spain) S.L.U

Ctra. De Villaverde a Vallecas, 265 1˚ Dcha Ed.

Hormigueras – P.I. de Vallecas 28031 Madrid

C/Llull, 321-329 (Edici CINC) | 22@Barcrelona, 08019 Barcelona

MAIL: [e-mail]

Delta Electronics (Italy) Srl

U󰀩cio di Milano Via Senigallia 18/2 20161 Milano (MI)

Piazza Grazioli 18 00186 Roma, Italy
MAIL: [e-mail]

Delta Electronics (Germany) GmbH

Coesterweg 45, D-59494 Soest, Germany
MAIL: [e-mail]

Delta Energy Systems LLC (CIS)

Vereyskaya Plaza II, o󰀩ce 112 Vereyskaya str.

17 121357 Moscow, Russia
MAIL: [e-mail]

Delta Greentech Elektronik San. Ltd. Sti. (Turkey)

Serifali Mah. Hendem Cad. Kule Sok. No: 16-A
34775 Umraniye / Istanbul
MAIL: [e-mail]

Delta Energy Systems AG (Dubai BR)

P.O. Box 185668, Gate 7, 3rd Floor, Hamarain Centre,
Dubai, United Arab Emirates
MAIL: [e-mail]

2018/08/30

DPM-C501L Operation Manual

Revision Histo ry

Version

Revision

Date

1st

The first version was published.

2018/08/30

i

DPM-C501L Operatio n Manual

Table of Contents

Chapter 1 Product Introduction

1.1 Preface .............................................................................................. 1-2

1.2 Overview ........................................................................................... 1-2

1.3 Safety Precautions ............................................................................. 1-3

Chapter 2 Product Specifications

2.1 Electrical Characteristics ................................................................... 2-2

2.2 Communications ................................................................................ 2-3

2.3 Operating the Display ........................................................................ 2-4

2.3.1 Menu Tree ..................................................................................... 2-5

2.4 Dimensions ........................................................................................ 2-6

Chapter 3 Installation

3.1 Installation ........................................................................................ 3-2

3.1.1 Installation Environment ................................................................. 3-2

3.1.2 Installation Notes ........................................................................... 3-2

3.2 Basic Checks ...................................................................................... 3-4

3.3 Wiring ................................................................................................ 3-4

3.3.1 Wiring Diagrams ............................................................................ 3-4

3.3.2 Communication Characteristics ........................................................ 3-6

Chapter 4 Operation

4.1 General Operation ............................................................................. 4-2

4.1.1 Setting Menu ................................................................................. 4-2

4.2 Setups ............................................................................................... 4-3

4.2.1 Set up the Password (PASS) ............................................................ 4-3

4.2.2 Set up Communication (C OM).......................................................... 4-3

4.2.3 Set up the System (SYS) ................................................................ 4-4

4.2.4 Set up the Current Transformer (CT) ................................................ 4-4

4.2.5 Set up the Potential Transformer (PT) ............................................... 4-5

ii

4.2.6 Set up Reset (RST) ........................................................................ 4-5

4.2.7 Digital Input (DI) ........................................................................... 4-5

4.2.8 Relay Output (RO) ......................................................................... 4-6

4.2.9 Edit the Password (PWD) ................................................................ 4-8

4.2.10 Meter Information (INFO) ............................................................... 4-9

4.3 Power Analysis Values ....................................................................... 4-9

4.3.1 Total Harmonic Distortion Measurement ............................................ 4-9

Chapter 5 Parameters and Funcitons

5.1 Overview of Parameters .................................................................... 5-2

Chapter 6 Error Cod e s

6.1 Table of Error Codes .......................................................................... 6-2

Appendix A Accessories

A.1 DCT1000 Series ................................................................................. A-2

A.2 DCT2000 Series ................................................................................. A-4

1-1

1

Chapter 1 Product Introduction

Table of Contents

1.1 Preface .............................................................................................. 1-2

1.2 Overview ........................................................................................... 1-2

1.3 Safety Precautions ............................................................................. 1-3

1

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1.1 Preface

Thank you for choosing this product. This manual provides installation instruct ion s for the DPM-C501L power
meter. The multifunction power meter DPM-C501L is an obvious choice for any application in terms of power
monitoring and control. It also can be used for mea sure men t cate gor y CAT III.

Before using the meter, read this manual carefully to ensure proper use of this meter. Before you finish reading
this manual, observe the following notes.

 The installation environment must be free of water vapor, corrosive and flammable gas.

 Follow the instructions on the diagram in this manual for wiring the device.

 Grounding must be performed correctly and properly according to provisions for related electric work

regulations currently effective in the country.

 Do not disassemble the meter or alter its wiring when the power is on.

 When the power is on, do not touch the terminal are a to avoi d electri c sho ck.

If you still experience issues when using the device, please contact your distributor or our customer service
center. As the product is updated and improved, changes to the specifications will be included in the newest
version of the manual which you can get by contacting your distributor or downloading it from the Delta
Electronics website (http://www.delta.com.tw/ia/

).

1.2 Overview

The DPM-C501L is equipped with a large, back-lit LCD displ ay that displays up to four lines of information.

Chapter 1 Product Introduction

1-3

1_

1_

1.3 Safety Precautions

 Installation Notes

 Install the power meter according to instructions on the manual. Use appropriate

personal protective equipment (PPE) and follow safe electrical work practices.

 Only qualified electrical workers should install this equipment. Such work should be

performed only after reading the entire set of installation instructions.

 Operate the power meter according to instructions on the manual. Neglecting

fundamental installation requirements may lead to personal injury as well as damage
to electrical equipment or other property.

 This equipment should be installe d in a suit able insulated and fireproof enclosure.

 Operation Notes

 DO NOT work alone.
 Before performing visual inspections, tests, or maintenance on this equipment,

disconnect all electric power sources.



Always use a properly rated voltage sensing device to confirm that power is off.

 Replace all devices, doors and covers before turning on power to this equipment.
 Carefully inspect the work area for tools and objects that may have been left inside

the equipment.

 Operation Notes

 Never short the secondary of a Power Transformer (PT).
 Never open circuit a Current Transformer (CT)



Ensure that the CT secondary winding is fixed securely on the equipment. It may
damage the equipment if the secondary winding becomes loose during operation.



When used with CTs, make sure the CTs are UL2808 listed in America and Canada
and meet or exceed the accuracy specifications for IEC61869-2 class or accepted by
authority having jurisdiction (AHJ) in other areas.

 Wiring Notes

 When the measured current is higher than the rated specification for the device,

consider using an external current transformer (CT).

 When the measured voltage is higher than the rated specification for the device,

consider using an external potential transformer (PT) (line voltage: 35 to 690V AC L-L
or phase voltage: 20 to 400V AC L-N).

 Connect only one cord to one plug on the quick connector.
 For the device is accidently unplugged, check the connecting cord and restart.

 Maintenance and Inspection Notes

 While cleaning the equipment, be sure to unplug all external power sources first. Use

a dry cloth to clean the equipment’s exterior. DO NOT open the equipment or touch
the wiring inside to prevent personal injury as well as damage t o el ect rical equ ipm ent
or other property. DO NOT use aerosol sprays, solvents, or abrasives.

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MEMO

2-1

2

Chapter 2 Product Specifications

Table of Contents

2.1 Electrical Characteristics ..................................................................... 2-2

2.2 Communications .................................................................................. 2-3

2.3 Operating the Display .......................................................................... 2-4

2.3.1 Menu Tree .................................................................................... 2-5

2.4 Dimensions ......................................................................................... 2-6

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2

2.1 Electrical Characteristics

Input

Voltage Connection

1PH2W, 1 CT 3PH3W, Δ connection, 3 CT, 2 PT

1PH3W, 2 CT 3PH4W, Y connection, 3 CT, No PT

3PH3W, Δ connection, 3 CT, No PT 3PH4W, Y connection, 3 CT, 3 PT

3PH3W, Δ connection, 2 CT, No PT 3PH4W, Y connection, 2 CT, 3 PT

Rated Voltage

Line voltage: 35–690 VAC (L-L)

Phase voltage: 20–400 VAC (L-N)

Rated Current 1 A/5 A

Frequency 50/60 Hz

Voltage Input Measuring Category: CAT III

Alarm Set up multi-level alarms 10 multi-level alarms

Maximum /

Minimum

15/15 types With timestamp

Power Operating range

80–265 VAC (maximum power: 4.6 W）

100–300 VDC

Frequency Operating frequency 50/60 Hz

Communication RS-485 port

Modbus-RTU

Baud rate 9600 / 19200 / 38400 bps

Mechanical

Characteristics

Dimension (W x H x D) 96 x 96 x 91.8 mm

IP Degree of Protection IP52 (front display), IP20 (meter body)

Measurement Accuracy

Electric quantities

Voltage, current ± 0.5%

Electric

energy

Real power ± 0.5%

Real power, reactive

power, apparent power

± 0.5%

Reactive

power

± 0.5%

Power factor ± 0.5%

Total Harmonic Distortion

for Current

± 1%

Real power ± 0.5%

Total Harmonic Distortion

for Voltage

± 1%

Reactive power ± 0.5% Frequency ± 0.5%

Apparent power ± 0.5% Harmonic ± 1%

Chapter 2 Product Specification

2-3

2

_

Environment

Ambient operating temperature -20–50°C (-4–122°F)

Storage temperature -30–60 °C (-22–140°F)

Relative Humidity 5–95% RH

Altitude Below 2000 meters

Display

Screen Type LCD

Backlight Blue LED

Electromagnetic Compatibility

Electrostatic Discharge

IEC 61000-4-2

Immunity to Radiated Fields

IEC 61000-4-3

Immunity to Fast Transients

IEC 61000-4-4

Immunity to Impulse Waves

IEC 61000-4-5

Conducted Immunity

IEC 61000-4-6

Immunity to Magnetic Fields

IEC 61000-4-8

Immunity to Voltage Dips

IEC 61000-4-11

Radiated Emissions

FCC Part 15 Class A, EN55011 Class A

Conducted Emissions

FCC Part 15 Class A, EN55011 Class A

Harmonics

IEC 61000-3-2

Flicker Emissions

IEC 61000-3-3

2.2 Communications Specifications

Communications

RS-485

Modbus-RTU

Baud rate

9600 / 19200 / 38400 bps

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2.3 Operating the Display

A Enable / Disable H UP Key
B Screen Title I DOWN Key
C Load percentage J NEXT Key
D Item K Operating status
E Enable / disable

digital input

L Unit

F INDEX Key M Value
G BACK Key

Button Basic Mode Setting Mode

INDEX Key Return to the previous screen Return to the previous screen

BACK Key

Go to setting mode or return to the

previous screen

Return to the previous screen

without saving the current setting

UP Key Select item or page Increment the number

DOWN Key Select item or page Decrement the number

NEXT Key See more options

Go to setting mode and go to the

next setting

Chapter 2 Product Specification

2-5

2

_

2.3.1

Menu Tree

 Display Menu Tree

You can always use this button

to return to HOME.

PA SS

HOM E

VLN

VLL

AMP

PF

VR

VAR

WATT

POS

+W H

-W H

+ V A R H

- V A H + V A H

- V A R H

THD I THD V

 Setting Menu Tree

You can always use this button to return to HOME.

PAS S

COM

SYS

CT

PT

RST

DI

ROIN FO

PWD

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2

2.4 Dimensions

 Front

Unit: mm

 Back:

3-1

3

3

Chapter 3 Installation

Table of Contents

3.1 Installation ......................................................................................... 3-2

3.1.1 Installation Environment ................................................................. 3-2

3.1.2 Installation Notes ........................................................................... 3-2

3.2 Basic Checks ....................................................................................... 3-4

3.3 Wiring ................................................................................................. 3-4

3.3.1 Wiring Diagrams ............................................................................ 3-4

3.3.2 Communication Characteristics ........................................................ 3-6

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3.1 Installation

3.1.1 Installation Environment

Keep the product in the shipping carton before installation. Store the product properly when it is not to be used
for an extended period of time to retain the warranty coverage. Some storage suggestions are listed below.

 Store the power meter in a clean, dry, and controlled environment.
 Store in an ambient temperature range of -30–60°C (-22–140°F).
 Store in a relative humidity range of 10–90%, non-condensing.
 Do not store the product in a place subjected to corrosive gases or liquids.
 Place the product on a solid and durable surface.
 Do not mount the product near heat-radiating elements; or in a location subjected to corrosive gases,

liquids, airborne dust or metallic particles; or where it can be subjected to high levels of electromagnetic
radiation.

3.1.2 Installation Notes

 Follow the instruction when installing the product to prevent equipment breakdown.
 To increase the cooling efficiency, install the product with sufficient space between adjacent objects and

baffles and walls to prevent poor heat dissipation.

A. Voltage measurement
B. Operating voltage
C. Current measurement
D. RS-485 port
E. Securing bracket
F. DI/DO

Chapter 3 Installation

3-3

3_

 Installation

1. This multi-functional power meter package comes with securing brackets for
easier mounting and removing.

2. The mounting hole dimension is 92x92 mm (see the figure below)

3. Slide the securing bracket into the hole and then push the meter in. The
maximum panel thickness should be 4.0 mm.

Note: wall mount (The installation panel or cabinet surface should be flat and in good
condition.)

 Mounting Hole Dimensions

Unit: mm

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3.2 Basic Checks

Items

Contents

General Check

 Regularly check for mounting looseness where the power meter and device are

connected.

 Prevent foreign objects, such as oil, water, or metal powder entering the device through

the ventilation holes. Prevent drill shavings or other debris entering the power meter.

 If the power meter is installed at a location with harmful gas or dust, prevent those

materials from entering the power meter.

Pre-operation

Check

(not supplied

with power)

 Insulate the connections at the wiring terminals.
 Communications wiring should be done properly to prevent abnormal operations.

 Check for the presence of conducive and flammable objects, such as screws or metal

pieces in the power meter.

 If electronic devices near to the power meter experience electromagnetic interference,

take steps to reduce the electromagnetic interference.

 Check for the correct voltage level for the power supplied to the power meter.

Pre-running

Check

(supplied with

power)

 Check if the power indicator light is lit.
 Check if communication between every device is normal.
 If there is any abnormal response from the power meter, contact your distributor or our

customer service center.

3.3 Wiring

3.3.1 Wiring Diagrams

 To avoid electric shock, do not change the wiring when the power is on.
 Install a breaker switch on the power cord for the meter because there is no power switch on the power

meter.

 When the measured volt age is higher than the r a ted spe cifi ca t ion for the device, it is necessary to use a n

external potential transformer (PT).

 When the measured current is higher than the rated specification for the device, it is necess ary to use an

external current transformer (CT).

The following table shows the recommended wiring materials.

Connecting Terminals Wire Diameters Screw Turning Torque Temperature rating

Operating power

AWG 10–24

8.0 kgf-cm (0.8 N·m) above 70°C

Voltage Measurement
Current Measurement

RS-485

DI/DO

Chapter 3 Installation

3-5

3_

 Connection

3PH3W, Δ connection, 3 CT, No PT 3PH3W, Δ connection, 2 CT, No PT

3PH3W, Δ connection, 3 CT, 2 PT 3PH4W, Y connection, 3 CT, No PT

3PH4W, Y connection, 3 CT, 3 PT 3PH4W, Y connection, 2 CT, 3 PT

1PH2W, 1 CT 1PH3W, 2 CT

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 DI/DO Connection

The following table lists the symbols used in the diagram.

Symbol

Description

Grounding

Current

transformer

Terminal

block

Voltage

transformer

Fuse

3.3.2 Communication Characteristics

 Communications Specifications:

Max. Communication

Distance

1200 m Baud Rate 9600, 19200, 38400

Max. Connection

Number

32 Data Length 8

Communication

Protocols

MODBUS RTU Parity None, Odd, Even

Function Code 03, 06, 10 Stop Bit 1

 Use shielded twisted-pair cables for RS485 communication.
 Connect the D+ communication terminal for all devices on the same twisted pair cable. Connect the D-

terminals on the other twisted pair cable. Ground the cable shield. Install a terminal resistor on the
terminal device.

 Use cables with a diameter of 14–28 AWG.

4-1

4

Chapter 4 Operation

Table of Contents

4.1 General Operation ............................................................................... 4-2

4.1.1 Setting Menu ................................................................................. 4-2

4.2 Setups ................................................................................................. 4-3

4.2.1 Set up the Password (PASS) ............................................................ 4-3

4.2.2 Set up Communication (COM).......................................................... 4-3

4.2.3 Set up the System (SYS) ................................................................ 4-4

4.2.4 Set up the Current Transformer (CT) ................................................ 4-4

4.2.5 Set up the Potential Transformer (PT) ............................................... 4-5

4.2.6 Set up Reset (RST) ........................................................................ 4-5

4.2.7 Digital Input (DI) ........................................................................... 4-5

4.2.8 Relay Output (RO) ......................................................................... 4-6

4.2.9 Edit the Password (PWD) ................................................................ 4-8

4.2.10 Meter Information (INFO) ............................................................... 4-9

4.3 Power Analysis Values ........................................................................ 4-9

4.3.1 Total Harmonic Distortion Measurement ............................................ 4-9

4

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4.1 General Operation

1. Use the UP and DOWN keys to switch among setting pages.

2. Use the BACK or INDEX keys to go back to HOME page.
Note 1: Use the BACK key in the HOME page to enter the setting page.
Note 2: Press the NEXT key for 3 seconds in the HOME page to switch the language display between

Chinese and English.

4.1.1 Setting Menu

 HOME page (HOME): Voltage values measured by the power meter, including THD voltage (VT), THD

current (IT), total potential transformer (PT), positive active energy (ET).

 Phase voltage (VLN): Phase voltage values measured by the power meter, including phase A voltage

(AN), phase B voltage (BN), phase C voltage (CN) and average phase voltage (T).

 Line voltage (VLL): Line voltage values measured by the power meter, including A-B line voltage (AB),

B-C line voltage (BC), C-A line voltage (CA), and average line voltage (T).

 Electric current page (AMP): Electric current mea sured by the power meter , i ncl udi ng phase A current (A),

phase B current (B), phase C current (C) and average current (T).

 Power factor page (PF) : Pow er factor s mea sured by the pow er mete r, including phase A (A), phase B (B),

and phase C (C) power factors; and total power factor (T).

 Active power, reactive power, and apparent power page (PQS): Values measured by the power meter,

including total active power (P), total reactive power (Q), total apparent power (S) and frequency (Hz).

 Active power page (WATT): Active power value measured by the power meter, including phase A (A),

phase B (B), and phase C (C) active pow er; and total active power (T).

 Reactive power page (VAR): Reactive power value measured by the power meter, including phase A (A),

phase B (B), and phase C (C) reactive power; and total reactive power (T).

 Apparent power page (VA): Apparent power value measured by the power meter, including phase A (A),

phase B (B), and phase C (C) apparent power; and total apparent power (T).

 Positive active energy page (+WH): Positive active energy measured by the power meter, including

positive active energy (PH).

 Reversed active energy page (-WH): Reversed active energy measured by the power meter, including

reversed active energy (PH).

 Positive reactive energy page (+VARH): Positive reactive energy measured by the power meter,

including positive reactive energy (QH).

 Reversed reactive energy page (-VARH): Reversed reactive energy measured by the power meter,

including reserved reactive energy (QH).

 Positive apparent energy page (+VAH): Positive apparent energy measured by the power meter,

including positive apparent energy (SH).

Chapter 4 Operation

4-3

4_

 Reversed apparent energy page (-VAH): Reversed apparent energy measured by the power meter,

including reversed apparent energy (SH).

 Total harmonic current distortion p age (THD I): Current harmo nic distort ion measur ed by the power meter,

including phase A current (A), phase B current (B), and phase C current (C) harmonic distortion; and t otal
harmonic distortion for current (T).

 Total harmonic voltage distortion page (THD I): Voltage harmonic distortion m easured by the pow er meter,

including phase A voltage (A), phase B voltage (B), and phase C voltage (C) harmonic distortion; and
total harmonic distortion for voltage (T).

4.2 Setups

4.2.1 Set up the Password (PASS)

 Password: You must enter the password (default 0000) before using power meter.
 Steps

1. Press NEXT until the first digit starts blinkin g .

2. Use UP and DOWN to select the first digit of the password.

3. Press ENTER to confirm the selected digit and move to set the next digit.

4. Repeat steps 2–3 to complete setting the 4-digit password.

5. After you set the 4-digit password, press ENTER to go to the parameter setting page.

Note 1: If you need to edit the password setting, press BACK and the digit stops blinking.

Press NEXT until the first digit starts blinking again and then follow steps 2–3 to set a new password.

Note 2: Press BACK to exit the password page and go to HOME page.

4.2.2 Set up Communication (COM)

 Address (ID): Device ID; the address range is 1–254 (default: 1); 255 is the broadcast ID.
 Baud Rate (BR): Transmission speed; options are 9600 kbps (default), 19200 bps, and 38400 bps.
 Parity setting (PA): Odd and even communication parity checking bit; options are None (8n1) (default),

Even (8E1), and Odd (8o1).

 Steps

1. Press NEXT unt il the fir s t digit st arts blinking

2. Use UP and DOWN to select the device ID.

3. Press NEXT to save the setting and then set the next device ID.

4. Repeat steps 2–3 to complete setting the 3-digit device ID. Press NEXT to set the baud rate.

5. When the option starts blinking, use UP and DOWN to select the baud rate.

6. Press NEXT to save the setting and set the parity.

7. When the option starts blinking, use UP and DOWN to select the parity.

8. Press NEXT to save the setting.

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Note: You can go back to the previous settin g it em by pr e ssing BACK anytime, whether y ou hav e c omp leted
or cancel ed the setting.

4.2.3 Set up the System (SYS)

 Wiring methods (WR): Options are one-phase two-wire (1PH2W), one-phase three-wire (1PH3W),

three-phase three-wire (3PH3W), and three-phase four-wire (3PH4W); default: three-phase four-wire.

 Number of current transformers (CT): Options are 1, 2 and 3; default: 3.
 Number of potential transformers (PT): Options are 0, 2 and 3; default: 3.
 Steps

1. Press NEXT until the option starts blinking.

2. Use UP and DOWN to select the wiring method.

3. Press NEXT to save the setting and then set the number of current transformers (CT).

4. When the option starts blinking, use UP and DOWN to select the number of current transformers.

5. Press NEXT to save the setting and set the number of potential transformers (PT).

6. When the option starts blinking, use UP and DOWN to select the number of potential transformers.

7. Press NEXT to save the setting.

Note: You can go back to the previous setting item by pressing BACK anytime, whether you have completed or
canceled the setting.

4.2.4 Set up the Current Transformer (CT)

 Ampere for the primary-side current transformer; 1–99 99 A, 5 A is default.
 Ampere for the secondary-side current transformer; options are 1 and 5 A; 5 A is default.
 Steps

1. Press NEXT until the first digit starts blinking

2. Use UP and DOWN to select the number for the primary-side current transformer.

3. Press NEXT to confirm the setting and then set the next number for the primary-side current

transformer.

4. Repeat steps 2–3 to complete setting the 4-digit number for the primary-side current transformer.

Press NEXT to set the secondary-side current transform er.

5. When the option starts blinking, use UP and DOWN to select the number of the secondary-side

current transformer.

6. Press NEXT to save the setting.

Note: You can go back to the previous setting item by pressing BACK anytime, whether you have completed or
canceled the setting.

Chapter 4 Operation

4-5

4_

4.2.5 Set up the Potential Transformer (PT)

 Voltage for the primary-side potential transformer; 1– 65535 V, 1 V is default.
 Voltage for the secondary-side potential transformer; 1–9999 V, 1 V is default.
 Steps

1. Press NEXT until the first digit starts blinking

2. Use UP and DOWN to select the number for the primary-side potential transformer.

3. Press NEXT to confirm the setting and then set the next number for the primary-side potential
transformer.

4. Repeat steps 2–3 to complete setting the 5-digit number for the primary-side potential trans for mer.
Press NEXT to set the secondary-side potential transf orme r.

5. When the option starts blinking, use UP and DOWN to select the number of the secondary-side
potential transformer.

6. Press NEXT to confirm the setting and then set the next number for the primary-side potential
transformer.

7. Repeat steps 5–6 to complete setting the 4-digit number for the primary-side potential trans for mer.

8. Press NEXT to save the setting.

Note: You can go back to the previous setting item by pressing BACK anytime, whether you have completed or
canceled the setting.

4.2.6 Set up Reset (RST)

 No action (nonE): Do not reset.
 Restore to defaults (dEF): Restore the power meter parameters to the default settings.
 Reset the accumulated value of electric energy (PH) on the meter to zero.
 Clear all detected alarm (ALA) logs on the meter.
 Steps

1. Press NEXT until the option starts blinking.

2. Use UP and DOWN to select the reset options.

3. Press NEXT to save the setting.

Note: You can go back to the previous setting item by pressing BACK anytime, whether you have completed or
canceled the setting.

4.2.7 Digital Input (DI)

 Digital input #1 (D1): Enable (on) or disable (oFF) the first digital input, default: disable (oFF)
 Digital input #2 (D2): Enable (on) or disable (oFF) the second digital input, default: disable (oFF)
 Digital input #3 (D3): Enable (on) or disable (oFF) the third digital input, default: disable (oFF)
 Digital input #4 (D4): Enable (on) or disable (oFF) the fourth digital input, default: disable (oFF)
 Steps

DPM-C501L Operation Manual

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_4

1. Press NEXT until the option starts blinking.

2. Use UP and DOWN to select ON or OFF.

3. Press NEXT to save the setting and then set the next digital input.

4. When the option starts blinking, use UP and DOWN to select ON or OFF.

5. Press NEXT to save the setting.

6. Repeat steps 4-5 to complete setting the last digital input.

7. Press NEXT to save the setting.
Note: You can go back to the previous setting item by pressing BACK anytim e, whet h er you have completed or
canceled the setting.

4.2.8 Relay Output (RO)

 Relay output#1 (R1): Enable (on) or disable (oFF) the first relay output; default: OFF (oFF)
 Relay output#1 (R2): Enable (on) or disable (oFF) the second relay output; default: OFF (oFF)
 The following table lists the relay output descriptions on the LCD.

LCD display Item Description

Disable This function is dis abled.

Over current alarm

If the over current alarm is triggered, the
corresponding relay closes. If the over
current alarm is canceled, the
corresponding relay opens.

Over line voltage

alarm

If the over line voltage alarm is triggered,
the corresponding relay closes. If the
over line voltage alarm is canceled, the
corresponding relay open.

Under line voltage

alarm

If the under line voltage alarm is
triggered, the corresponding relay
closes. If the under line voltage alarm is
canceled, the corresponding relay
opens.

Over phase voltage

alarm

If the over phase voltage alarm is
triggered, the corresponding relay
closes. If the over phase voltage alarm is
canceled, the corresponding relay
opens.

Chapter 4 Operation

4-7

4_

Under phase

voltage alarm

If the under phase voltage alarm is
triggered, the corresponding relay
closes. If the under phase voltage alarm
is canceled, the corresponding relay
opens.

Over active energy

alarm

If the over active energy alarm is
triggered, the corresponding relay
closes. If the over active energy alarm is
canceled, the corresponding relay
opens.

Over reactive

energy alarm

If the over reactive energy alarm is
triggered, the correspondi ng relay
closes. If the over reactive energy alarm
is canceled, the corresponding relay
opens.

Over apparent

power alarm

If the over apparent power alarm is
triggered, the corresponding relay
closes. If the over apparent power alarm
is canceled, the corresponding relay
opens.

Over frequency

alarm

If the over frequency alarm is triggered,
the corresponding relay closes. If the
over frequency alarm is canceled, the
corresponding relay opens.

Under frequency

alarm

If the under frequency alarm is triggered,
the corresponding relay closes. If the
under frequency alarm is canceled, the
corresponding relay opens.

Digital input 1

If the digital input 1 receives a higher
potential, the corresponding relay is
closed. If the digital input 1 receives a
lower potential, the corresponding relay
is opened.

Digital input 2

If the digital input 2 receives a higher
potential, the correspondin g r e lay closes.
If the digital input 1 receives a lower
potential, the corresponding relay opens.

DPM-C501L Operation Manual

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_4

Digital input 3

If the digital input 3 receives a higher
potential, the correspondin g r e lay closes.
If the digital input 1 receives a lower
potential, the corresponding relay opens.

Digital input 4

If the digital input 4 receives a higher
potential, the correspo ndin g r e lay closes.
If the digital input 1 receives a lower
potential, the corresponding relay opens.

Communication

Write 1 in Modbus register 0x594, the
relay #1 closes. Write 0 in Modbus
register 0x594, the relay #1 opens.
Write 1 in Modbus register 0x595, the
relay #2 closes. Write 0 in Modbus
register 0x594, the relay #2 opens.

 Steps

1. Press NEXT until the option starts blinking.

2. Use UP and DOWN to select the setting options.

3. Press NEXT to save the setting and then set the next relay output.

4. When the option starts blinking, use UP and DOWN to select the setting options.

5. Press NEXT to save the setting.
Note: You can go back to the previous setting item by pressing BACK anytime, whether you have completed or
canceled the setting.

4.2.9 Edit the Password (PWD)

 Edit the password (default 0000)
 Steps

1. Press NEXT until the first digit starts blinking

2. Use UP and DOWN to select the first digit of the password

3. Press NEXT to confirm the setting and then set the next digit of the password.

4. Repeat steps 2–3 to complete setting the 4-digit password.

5. Press NEXT to save the setting.
Note: You can go back to the previous setting item by pressing BACK key anytime, whether you have
completed or canceled the setting.

Chapter 4 Operation

4-9

4_

4.2.10 Meter Information (INFO)

 Model: C501L
 Firmware version: 1XXXX
 Firmware release date: XXXXYYZZ (XXXX: year, YY: month, ZZ: day)

4.3 Power Analysis Values

4.3.1 Total Harmonic Distortion Measurement

The total harmonic distortion (THD) is a measurement of the harmonic distortion and is defined as the ratio
between the power of t he har monic fr equenc ies abov e the b ase frequ ency a nd the pow er of the base fr eque ncy.
The total harmonic distortions for current and voltage are calculated using the follow ing for mula s.

Total Harmonic
Distortion for Current

Total Harmonic
Distortion for Voltage

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MEMO

5-1

5

Chapter 5 Parameters and

Functions

Table of Contents

5.1 Overview of Parameters ...................................................................... 5-2

DPM-C501L Operation Manual

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_5

5.1 Overview of Parameters

MODBUS

Address

Item Range

Data

Type

Unit

Data
Size

(byte)

Read (R) /

Write (W)

Hex

Modicom
Format

0. System Parameters: 0001 – 00FF

1 40002

Present date

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R/W

2 40003

Date: 1–31

Week: Sun–Sat

byte

Date,

Week

2 R/W

3 40004

Present time

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R/W

4 40005 Second: 00–59 word Second 2 R/W

5 40006 Meter Constant 3200 uint P/kWh 2 R

6 40007 Meter Model

0: None

6: C501L

word

2 R

7 40008

Total running time of the
meter

Day: 0–65535 uint Day 2 R

8 40009

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

9 40010 Firmware version 0.0000 – 9.9999 uint

2 R

A 40011

Firmware release date

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

B 40012 Date: 1–31 word Date 2 R

C 40013 Reserved

D 40014 Power system configuration 0: 3φ4W word

2 R/W

Chapter 5 Parameters and Functions

5-3

5_ 5_

1: 3φ3W

2: 1φ2W

3: 1φ3W

E 40015 Prima ry CT (A) 1 – 9999 uint A 2 R/W

F 40016 Secondary CT (A)

0：1A

1：5A

word A 2 R/W

10 40017 Primary PT 1 – 65535 uint V 2 R/W

11 40018 Secondary PT 1 – 9999 uint V 2 R/W

12 40019 Transformer quantities

0: 3CT3PT

1: 3CT2PT

2: 3CT0PT

3: 2CT3PT

4: 2CT2PT

5: 2CT0PT

6: 1CT3PT

7: 1CT2PT

8: 1CT0PT

word

2 R/W

13 40020 Reserved

14 40021 Backlight delay 1 – 99 word Second 2 R/W

15 40022 Reserved

16 40023 Baud Rate

0: 9600

1: 19200

2: 38400

word bps 2 R/W

17 40024 Communicati on mode 1: RTU word

2 R/W

18 40025 Data bit 0: 8 word bit 2 R/W

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_5

19 40026 Stop bit

0: None

1: Even

2: Odd

word

2 R/W

1A 40027 Stop bit 0: 1 word bit 2 R/W

1B 40028 Modbus address 0 – 255 word

2 R/W

1C 40029 Reset

0: None

word

2 W

1: Reset to factory default

2: Reset value of energy

3: Reset alarm times

4: Reset max./min. value

1D 40030 Reserved

1E 40031 Reserved

Alarm – Over Current

1F 40032 Alarm enable

0: Disable

1: Enable

word

2 R/W

20 40033 Pickup setpoint (current

value exceeding this value
triggers alarm)

0.000 – 99999.999 float A 4 R/W

21 40034

22 40035

Reserved

23 40036 Dropout setpoint (current

value below this value
clears alarm)

0.000 – 99999.999 float A 4 R/W

24 40037

Alarm – Over Voltage L-L

34 40053 Alarm enable

0: Disable

1: Enable

word

2 R/W

35 40054

Pickup setpoint (line

0.000 – 99999.999 float V 4 R/W

Chapter 5 Parameters and Functions

5-5

5_ 5_

36 40055

voltage value exceeding
this value triggers alarm)

37 40056

Reserved

38 40057 Dropout setpoint (line

voltage value below this
value clears alarm)

0.000 – 99999.999 float V 4 R/W

39 40058

3A 40059

Reserved

Alarm – Under Voltage L-L

3B 40060 Alarm enable

0: Disable

1: Enable

word

2 R/W

3C 40061 Pickup setpoint (line

voltage value below this
value triggers alarm)

0.000 – 99999.999 float V 4 R/W

3D 40062

3E 40063

Reserved

3F 40064 Dropout setpoint (line

voltage value exceeding
this value clears alarm)

0.000 – 99999.999 float V 4 R/W

40 40065

41 40066

Reserved

Alarm – Over Voltage L-N

42 40067 Alarm enable

0: Disable

1: Enable

word

2 R/W

43 40068 Pickup setpoint (phase

voltage value exceeding
this value triggers alarm)

0.000 – 99999.999 float V 4 R/W

44 40069

45 40070

Reserved

46 40071 Dropout setpoint (phase

voltage value below this
value clears alarm)

0.000 – 99999.999 float V 4 R/W

47 40072

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_5

48 40073 Reserved

Alarm – Under Voltage L-N

49 40074 Alarm enable

0: Disable

1: Enable

word

2 R/W

4A 40075 Pickup setpoint (phase

voltage value below this
value triggers alarm)

0.000 – 99999.999 float V 4 R/W

4B 40076

4C 40077

Reserved

4D 40078 Dropout setpoint (phase

voltage value exceeding
this value clears alarm)

0.000 – 99999.999 float V 4 R/W

4E 40079

Alarm – Over Activ e Power

5E 40095 Alarm enable

0: Disable

1: Enable

word

2 R/W

5F 40096

Pickup setpoint (total active

power value

exceeding this

value triggers alarm)

0.000 – 99999.999 float kW 4 R/W

60 40097

61 40098

Reserved

62 40099 Dropout setpoint (total

active power value below
this value clears alarm)

0.000 – 99999.999 float kW 4 R/W

63 40100

64 40101

Reserved

Over Reactive Power

65 40102 Alarm enable

0: Disable

1: Enable

word

2 R/W

66 40103

Pickup setpoint (total
reactive power value
exceeding this value;alarm

0.000 – 99999.999 float kVAR 4 R/W

67 40104

Chapter 5 Parameters and Functions

5-7

5_ 5_

triggered)

68 40105

Reserved

69 40106 Dropout setpoint (total

reactive power value below
this value clears alarm)

0.000 – 99999.999 float kVAR 4 R/W

6A 40107

6B 40108

Reserved

Alarm – Over App ar ent Power

6C 40109 Alarm enable

0: Disable

1: Enable

word

2 R/W

6D 40110 Pickup setpoint (total

apparent power value
exceeding this value
triggers alarm)

0.000 – 99999.999 float kVA 4 R/W

6E 40111

6F 40112

Reserved

70 40113 Dropout setpoint (total

apparent power value
below this value clears
alarm)

0.000 – 99999.999 float kVA 4 R/W

71 40114

72 40115

Reserved

Alarm – Over Frequency

AB 40172 Alarm enable

0: Disable

1: Enable

word

2 R/W

AC 40173 Pickup setpoint (frequency

value exceeding this value
triggers alarm)

0.0000 – 99.9999 float Hz 4 R/W

AD 40174

AE 40175

Reserved

AF 40176

Dropout setpoint (frequency

value below this value
clears alarm)

0.0000 – 99.9999 float Hz 4 R/W

B0 40177

DPM-C501L Operation Manual

5-8

_5

B1 40178

Reserved

Alarm – Under Frequency

B2 40179 Alarm enable

0: Disable

1: Enable

word

2 R/W

B3 40180 Pickup setpoint (frequency

value below this value
triggers alarm)

0.0000 – 99.9999 float Hz 4 R/W

B4 40181

B5 40182

Reserved

B6 40183 Dropo

ut setpoint (frequency

value exceeding this value,
alarm cleared)

0.0000 – 99.9999 float Hz 4 R/W

B7 40184

B8 40185

Reserved

1. Meter Parameters: 0100 – 01FF

100 40257

Phase A voltage 0.000 – 99999.999 float V 4 R

101 40258

102 40259

Phase B voltage 0.000 – 99999.999 float V 4 R

103 40260

104 40261

Phase C voltage 0.000 – 99999.999 float V 4 R

105 40262

106 40263

Average phase voltage 0.000 – 99999.999 float V 4 R

107 40264

108 40265

A–B line voltage 0.000 – 99999.999 float V 4 R

109 40266

10A 40267

B–C line voltage 0.000 – 99999.999 float V 4 R

10B 40268

10C 40269 C–A line voltage 0.000 – 99999.999 float V 4 R

Chapter 5 Parameters and Functions

5-9

5_ 5_

10D 40270

10E 40271

Average line voltage 0.000 – 99999.999 float V 4 R

10F 40272

110 40273

Phase A voltage unbalance 0.00 – 99.99 float % 4 R

111 40274

112 40275

Phase B voltage unbalance 0.00 – 99.99 float % 4 R

113 40276

114 40277

Phase C voltage unbalance 0.00 – 99.99 float % 4 R

115 40278

116 40279

Phase voltage unbalance 0.00 – 99.99 float % 4 R

117 40280

118 40281

A–B line voltage unbalance 0.00 – 99.99 float % 4 R

119 40282

11A 40283

B–C line voltage unbalance 0.00 – 99.99 float % 4 R

11B 40284

11C 40285

C–A line voltage unbalance 0.00 – 99.99 float % 4 R

11D 40286

11E 40287

Line voltage unbalance 0.00 – 99.99 float % 4 R

11F 40288

120 40289

Phase A current 0.000 – 99999.999 float A 4 R

121 40290

122 40291

Phase B current 0.000 – 99999.999 float A 4 R

123 40292

124 40293 Phase C current 0.000 – 99999.999 float A 4 R

DPM-C501L Operation Manual

5-10

_5

125 40294

126 40295

Three–phase average
current

0.000 – 99999.999 float A 4 R

127 40296

128 40297

Neutral line current 0.000 – 99999.999 float A 4 R

129 40298

12A 40299

Phase A current unbalance 0.00 – 99.99 float % 4 R

12B 40300

12C 40301

Phase B current unbalance 0.00 – 99.99 float % 4 R

12D 40302

12E 40303

Phase C current unbalance 0.00 – 99.99 float % 4 R

12F 40304

130 40305

Current unbalance 0.00 – 99.99 float % 4 R

131 40306

132 40307

Total power factor

0.00000 – 1.00000
(positive: lag; negative: lead)

float

4 R

133 40308

134 40309

Power factor of phase A

0.00000 – 1.00000
(positive: lag; negative: lead)

float

4 R

135 40310

136 40311

Power factor of phase B

0.00000 – 1.00000
(positive: lag; negative: lead)

float

4 R

137 40312

138 40313

Power factor of phase C

0.00000 – 1.00000
(positive: lag; negative: lead)

float

4 R

139 40314

13A 40315

Total displacement power
factor

0.00000 – 1.00000
(positive: lag; negative: lead)

float

4 R

13B 40316

13C 40317

Total displacement power 0.00000 – 1.00000

float

4 R

Chapter 5 Parameters and Functions

5-11

5_ 5_

13D 40318 factor of phase A (positive: lag; negative: lead)

13E 40319

Total displacement power
factor of phase B

0.00000 – 1.00000
(positive: lag; negative: lead)

float

4 R

13F 40320

140 40321

Total displacement power
factor of phase C

0.00000 – 1.00000
(positive: lag; negative: lead)

float

4 R

141 40322

142 40323

Frequency 0.0000 – 99.9999 float Hz 4 R

143 40324

144 40325

Total instantaneous active
power

0.000 – 99999.999 float kW 4 R

145 40326

146 40327

Instantaneous active power

of phase A

0.000 – 99999.999 float kW 4 R

147 40328

148 40329

Instantaneous active power

of phase B

0.000 – 99999.999 float kW 4 R

149 40330

14A 40331

Instantaneous active power

of phase C

0.000 – 99999.999 float kW 4 R

14B 40332

14C 40333

Total instantaneous
reactive power

0.000 – 99999.999 float kVAR 4 R

14D 40334

14E 40335

Instantaneous reactive
power of phase A

0.000 – 99999.999 float kVAR 4 R

14F 40336

150 40337

Instantaneous reactive
power of phase B

0.000 – 99999.999 float kVAR 4 R

151 40338

152 40339

Instantaneous reactive
power of phase C

0.000 – 99999.999 float kVAR 4 R

153 40340

154 40341

Instantaneous apparent

0.000 – 99999.999 float kVA 4 R

DPM-C501L Operation Manual

5-12

_5

155 40342 power

156 40343

Instantaneous apparent
power of phase A

0.000 – 99999.999 float kVA 4 R

157 40344

158 40345

Instantaneous apparent
power of phase B

0.000 – 99999.999 float kVA 4 R

159 40346

15A 40347

Instantaneous apparent
power of phase C

0.000 – 99999.999 float kVA 4 R

15B 40348

15C 40349

Active energy of
three-phase delivered

0 - 4294967295 uint Wh 4 R

15D 40350

15E 40351

Active energy of
three-phase received

0 - 4294967295

uint Wh 4 R

15F 40352

160 40353

Reactive energy of
three-phase delivered

0 - 4294967295

uint VARh 4 R

161 40354

162 40355

Reactive energy of
three-phase received

0 - 4294967295

uint VARh 4 R

163 40356

164 40357

Apparent energy of
three-phase delivered

0 - 4294967295

uint VAh 4 R

165 40358

166 40359

Apparent energy of
three-phase received

0 - 4294967295

uint VAh 4 R

167 40360

174 40373

Total

harmonic distortion for

phase A current

0.000 – 999.999 float % 4 R

175 40374

176 40375

Total

harmonic distortion for

phase B current

0.000 – 999.999 float % 4 R

177 40376

178 40377

Total harmonic distorti

on for

0.000 – 999.999 float % 4 R

Chapter 5 Parameters and Functions

5-13

5_ 5_

179 40378 phase C current

17A 40379

Total

harmonic distortion for

neutral line current

0.000 – 999.999 float % 4 R

17B 40380

17C 40381

Total

harmonic distortion for

phase A voltage

0.000 – 999.999 float % 4 R

17D 40382

17E 40383

Total

harmonic distortion for

phase B voltage

0.000 – 999.999 float % 4 R

17F 40384

180 40385

Total

harmonic distortion for

phase C voltage

0.000 – 999.999 float % 4 R

181 40386

182 40387

Total harmonic

distortion for

phase A–B voltage

0.000 – 999.999 float % 4 R

183 40388

184 40389

Total

harmonic distortion for

phase B–C voltage

0.000 – 999.999 float % 4 R

185 40390

186 40391

Total

harmonic distortion for

phase C–A voltage

0.000 – 999.999 float % 4 R

187 40392

188 40393

Total

harmonic distortion for

current

0.000 – 999.999 float % 4 R

189 40394

18A 40395

Total

harmonic distortion for

voltage

0.000 – 999.999 float % 4 R

18B 40396

2. Maximum: 0200 – 02FF

200 40513

Maximum A–B line voltage 0.000 – 99999.999 float V 4 R

201 40514

202 40515

Date of maximum A–B line
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

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_5

203 40516

Date: 1–31 word Date 2 R

204 40517

Time of maximum A–B line
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

205 40518

Second: 00–59 word Second 2 R

206 40519

Maximum B–C line voltage 0.000 – 99999.999 float V 4 R

207 40520

208 40521

Date of maximum B–C line
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

209 40522

Date: 1–31 word Date 2 R

20A 40523

Time of maximum B–C line
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

20B 40524

Second: 00–59 word Second 2 R

20C 40525

Maximum C–A line voltage 0.000 – 99999.999 float V 4 R

20D 40526

20E 40527

Date of maximum C–A line
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

20F 40528

Date: 1–31 word Date 2 R

210 40529

Time of maximum C–A line
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

211 40530

Second: 00–59 word Second 2 R

212 40531

Maximum phase A voltage 0.000 – 99999.999 float V 4 R

213 40532

214 40533

Date of maximum phase A
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

215 40534

Date: 1–31 word Date 2 R

Chapter 5 Parameters and Functions

5-15

5_ 5_

216 40535

Time of maximum phase A
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

217 40536

Second: 00–59 word Second 2 R

218 40537

Maximum phase B voltage 0.000 – 99999.999 float V 4 R

219 40538

21A 40539

Date of maximum phase B
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

21B 40540

Date: 1–31 word Date 2 R

21C 40541

Time of maximum phase B
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

21D 40542

Second: 00–59 word Second 2 R

21E 40543

Maximum phase C voltage 0.000 – 99999.999 float V 4 R

21F 40544

220 40545

Date of maximum phase C
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

221 40546

Date: 1–31 word Date 2 R

222 40547

Time of maximum phase C
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

223 40548

Second: 00–59 word Second 2 R

224 40549

Maximum phase A current 0.000 – 99999.999 float A 4 R

225 40550

226 40551

Date of maximum phase A
current

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

227 40552

Date: 1–31 word Date 2 R

228 40553

Time of maximum phase A

Hour: 00–23 byte

Hour,

2 R

DPM-C501L Operation Manual

5-16

_5

current Minute: 00–59 Minute

229 40554

Second: 00–59 word Second 2 R

22A 40555

Maximum phase B current 0.000 – 99999.999 float A 4 R

22B 40556

22C 40557

Date of maximum phase B
current

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

22D 40558

Date: 1–31 word Date 2 R

22E 40559

Time of maximum phase B
current

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

22F 40560

Second: 00–59 word Second 2 R

230 40561

Maximum phase C current 0.000 – 99999.999 float A 4 R

231 40562

232 40563

Date of maximum phase C
current

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

233 40564

Date: 1–31 word Date 2 R

234 40565

Time of maximum phase C
current

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

235 40566

Second: 00–59 word Second 2 R

236 40567

Maximum neutral line
current

0.000 – 99999.999 float A 4 R

237 40568

238 40569

Date of maximum neutral
line current

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

239 40570

Date: 1–31 word Date 2 R

23A 40571

Time of maximum neutral
line current

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

Chapter 5 Parameters and Functions

5-17

5_ 5_

23B 40572

Second: 00–59 word Second 2 R

23C 40573

Maximum frequency value 0.0000 – 99.9999 float Hz 4 R

23D 40574

23E 40575

Date of maximum
frequency value

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

23F 40576

Date: 1–31 word Date 2 R

240 40577

Time of maximum
frequency value

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

241 40578

Second: 00–59 word Second 2 R

242 40579

Maximum total power factor 0.00000 – 1.00000 float

4 R

243 40580

244 40581

Date of maximum total
power factor

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

245 40582

Date: 1–31 word Date 2 R

246 40583

Time of maximum total
power factor

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

247 40584

Second: 00–59 word Second 2 R

248 40585

Maximum total active
power

0.000 – 99999.999 float kW 4 R

249 40586

24A 40587

Date of maximum total
active power

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

24B 40588

Date: 1–31 word Date 2 R

24C 40589

Time of maximum total
active power

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

24D 40590

Second: 00–59 word Second 2 R

DPM-C501L Operation Manual

5-18

_5

24E 40591

Maximum total reactive
power

0.000 – 99999.999 float kVAR 4 R

24F 40592

250 40593

Date of maximum total
reactive power

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

251 40594

Date: 1–31 word Date 2 R

252 40595

Time of maximum total
reactive power

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

253 40596

Second: 00–59 word Second 2 R

254 40597

Maximum total apparent
power

0.000 – 99999.999 float kVA 4 R

255 40598

256 40599

Date of maximum total
apparent power

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

257 40600

Date: 1–31 word Date 2 R

258 40601

Time of maximum total
apparent power

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

259 40602

Second: 00–59 word Second 2 R

3. Minimum: 0300 – 03FF

300 40769

Minimum A–B line voltage 0.000 – 99999.999 float V 4 R

301 40770

302 40771

Date of minimum A–B line
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

303 40772

Date: 1–31 word Date 2 R

304 40773

Time of minimum A–B line
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

305 40774

Second: 00–59 word Second 2 R

Chapter 5 Parameters and Functions

5-19

5_ 5_

306 40775

Minimum B–C line voltage 0.000 – 99999.999 float V 4 R

307 40776

308 40777

Date of minimum B–C line
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

309 40778

Date: 1–31 word Date 2 R

30A 40779

Time of minimum B–C line
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

30B 40780

Second: 00–59 word Second 2 R

30C 40781

Minimum C–A lin e volt age 0.000 – 99999.999 float V 4 R

30D 40782

30E 40783

Date of minimum C–A line
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

30F 40784

Date: 1–31 word Date 2 R

310 40785

Time of minimum C–A line
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

311 40786

Second: 00–59 word Second 2 R

312 40787

Minimum phase A voltage 0.000 – 99999.999 float V 4 R

313 40788

314 40789

Date of minimum phase A
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

315 40790

Date: 1–31 word Date 2 R

316 40791

Time of minimum phase A
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

317 40792

Second: 00–59 word Second 2 R

318 40793 Minimum phase B voltage 0.000 – 99999.999 float V 4 R

DPM-C501L Operation Manual

5-20

_5

319 40794

31A 40795

Date of minimum phase B
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

31B 40796

Date: 1–31 word Date 2 R

31C 40797

Time of minimum phase B
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

31D 40798

Second: 00–59 word Second 2 R

31E 40799

Minimum phase C voltage 0.000 – 99999.999 float V 4 R

31F 40800

320 40801

Date of minimum phase C
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

321 40802

Date: 1–31 word Date 2 R

322 40803

Time of minimum phase C
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

323 40804

Second: 00–59 word Second 2 R

324 40805

Minimum phase A current 0.000 – 99999.999 float A 4 R

325 40806

326 40807

Date of minimum phase A
current

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

327 40808

Date: 1–31 word Date 2 R

328 40809

Time of minimum phase A
current

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

329 40810

Second: 00–59 word Second 2 R

32A 40811

Minimum phase B current 0.000 – 99999.999 float A 4 R

32B 40812

Chapter 5 Parameters and Functions

5-21

5_ 5_

32C 40813

Date of minimum phase B
current

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

32D 40814

Date: 1–31 word Date 2 R

32E 40815

Time of minimum phase B
current

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

32F 40816

Second: 00–59 word Second 2 R

330 40817

Minimum phase C current 0.000 – 99999.999 float A 4 R

331 40818

332 40819

Date of minimum phase C
current

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

333 40820

Date: 1–31 word Date 2 R

334 40821

Time of minimum phase C
current

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

335 40822

Second: 00–59 word Second 2 R

336 40823

Minimum neutral line
current

0.000 – 99999.999 float A 4 R

337 40824

338 40825

Date of minimum neutral
line current

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

339 40826

Date: 1–31 word Date 2 R

33A 40827

Time of minimum neutral
line current

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

33B 40828

Second: 00–59 word Second 2 R

33C 40829

Minimum frequency value 0.0000 – 99.9999 float Hz 4 R

33D 40830

33E 40831

Date of minimum frequency

Year: 00–99 byte

Year,

2 R

DPM-C501L Operation Manual

5-22

_5

value Month: 1–12 Month

33F 40832

Date: 1–31 word Date 2 R

340 40833

Time of minimum frequency

value

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

341 40834

Second: 00–59 word Second 2 R

342 40835

Minimum total power factor 0.00000 – 1.00000 float

4 R

343 40836

344 40837

Date of minimum total
power factor

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

345 40838

Date: 1–31 word Date 2 R

346 40839

Time of minimum total
power factor

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

347 40840

Second: 00–59 word Second 2 R

348 40841

Minimum total active power 0.000 – 99999.999 float kW 4 R

349 40842

34A 40843

Date of minimum total
active power

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

34B 40844

Date: 1–31 word Date 2 R

34C 40845

Time of minimum total
active power

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

34D 40846

Second: 00–59 word Second 2 R

34E 40847

Minimum total reactive
power

0.000 – 99999.999 float kVAR 4 R

34F 40848

350 40849

Date of minimum total
reactive power

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

Chapter 5 Parameters and Functions

5-23

5_ 5_

351 40850

Date: 1–31 word Date 2 R

352 40851

Time of minimum total
reactive power

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

353 40852

Second: 00–59 word Second 2 R

354 40853

Minimum total apparent
power

0.000 – 99999.999 float kVA 4 R

355 40854

356 40855

Date of minimum total
apparent power

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

357 40856

Date: 1–31 word Date 2 R

358 40857

Time of minimum total
apparent power

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

359 40858

Second: 00–59 word Second 2 R

4. Alarm：0400 – 04FF

400 41025 Alarm status

of over current

0: Cleared

1: Triggered

word

2 R

401 41026 Alarm times of over current 1–255 word times 2 R

402 41027

Alarm date of over current

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

403 41028

Date: 1–31 word Date 2 R

404 41029

Alarm time of over current

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

405 41030

Second: 00–59 word Second 2 R

412 41043

Alarm status of over line
voltage

0: Cleared

1: Triggered

word

2 R

413 41044

Alarm times of over line

1–255 word times 2 R

DPM-C501L Operation Manual

5-24

_5

voltage

414 41045

Alarm date of over line
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

415 41046

Date: 1–31 word Date 2 R

416 41047

Alarm time of over line
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

417 41048

Second: 00–59 word Second 2 R

418 41049

Alarm status of under line
voltage

0: Cleared

1: Triggered

word

2 R

419 41050

Alarm times of under line
voltage

1–255 word times 2 R

41A 41051

Alarm date of under line
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

41B 41052

Date: 1–31 word Date 2 R

41C 41053

Alarm time of under line
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

41D 41054

Second: 00–59 word Second 2 R

41E 41055

Alarm status of over phase
voltage

0: Cleared

1: Triggered

word

2 R

41F 41056

Alarm times of over phase
voltage

1–255 word times 2 R

420 41057

Alarm date of over phase
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

421 41058

Date: 1–31 word Date 2 R

422 41059

Alarm time of over phase
voltage

Hour: 00–23 byte

Hour,

Minute

2 R

Chapter 5 Parameters and Functions

5-25

5_ 5_

Minute: 00–59

423 41060

Second: 00–59 word Second 2 R

424 41061

Alarm status of under
voltage

0: Cleared

1: Triggered

word

2 R

425 41062

Alarm times

of under phase

voltage

1–255 word times 2 R

426 41063

Alarm date of under phase
voltage

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

427 41064

Date: 1–31 word Date 2 R

428 41065

Alarm time of under phase
voltage

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

429 41066

Second: 00–59 word Second 2 R

436 41079

Alarm status of over active
energy

0: Cleared

1: Triggered

word

2 R

437 41080

Alarm times of over active
energy

1–255 word times 2 R

438 41081

Alarm date of over active
energy

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

439 41082

Date: 1–31 word Date 2 R

43A 41083

Alarm time of over active
energy

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

43B 41084

Second: 00–59 word Second 2 R

43C 41085

Alarm status of over
reactive energy

0: Cleared

1: Triggered

word

2 R

43D 41086

Alarm times

of over reactive

energy

1–255 word times 2 R

DPM-C501L Operation Manual

5-26

_5

43E 41087

Alarm date of over reactive
energy

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

43F 41088

Date: 1–31 word Date 2 R

440 41089

Alarm time of over reactive
energy

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

441 41090

Second: 00–59 word Second 2 R

442 41091

Alarm status of over
apparent power

0: Cleared

1: Triggered

word

2 R

443 41092

Alarm times of over
apparent power

1, 255 word times 2 R

444 41093

Alarm date

of over apparent

power

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

445 41094

Date: 1–31 word Date 2 R

446 41095

Alarm time

of over apparent

power

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

447 41096

Second: 00–59 word Second 2 R

478 41145

Alarm status of power
factor (lead)

0: Cleared

1: Triggered

word

2 R

479 41146

Alarm times of

power factor

(lead)

1, 255 word times 2 R

47A 41147

Alarm date of power factor
(lead)

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

47B 41148 Date: 1–31 word Date 2 R

47C 41149

Alarm time of power factor
(lead)

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

Chapter 5 Parameters and Functions

5-27

5_ 5_

47D 41150

Second: 00–59 word Second 2 R

47E 41151

Alarm status of power
factor (lag)

0: Cleared

1: Triggered

word

2 R

47F 41152

Alarm times of

power factor

(lag)

1–255 word times 2 R

480 41153

Alarm date of under
frequency

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

481 41154

Date: 1–31 word Date 2 R

482 41155

Alarm time of under
frequency

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

483 41156

Second: 00–59 word Second 2 R

5. Advanced Settings: 0500 – 05FF

50C 41293 Setting group 1 0x100 – 0x1E7 word

2 R/W

50D 41294 Setting group 2 0x100 – 0x1E7 word

2 R/W

…

…

…

0x100 – 0x1E7 word

2 R/W

515 41362 Setting group 10 0x100 – 0x1E7 word

2 R/W

552 41363 Reset energy date

Year: 00–99

Month: 1–12

byte

Year,

Month

2 R

553 41364 Reset energy date Date: 1–31 word Date 2 R

554 41365 Reset energy time

Hour: 00–23

Minute: 00–59

byte

Hour,

Minute

2 R

555 41366 Reset energy time Second: 00–59 word Second 2 R

588 41417

Setting of digital input #1

0: Disable

1: Enable

word

2 R/W

589 41418

Setting of digital input #2

0: Disable

word

2 R/W

DPM-C501L Operation Manual

5-28

_5

1: Enable

58A 41419

Setting of digital input #3

0: Disable

1: Enable

word

2 R/W

58B 41420

Setting of digital input #4

0: Disable

1: Enable

word

2 R/W

58C 41421

Setting of relay output #1

Alarms:
0: Disable

1: Over current

2: Over line voltage

3: Under line voltage

4: Over phase voltage

5: Under phase voltage

6: Over active energy

7: Over reactive energy

8: Over apparent power

9: Over frequency

10: Under frequency

11: Digital input #1

12: Digital input #2

13: Digital input #3

14: Digital input #4

15: Communication
(when set for Relay Output
#1, register 0x594 is writable)
(when set for Relay Output
#2, register 0x595 is writable)

word

2 R/W

58D 41422

Setting of relay output #2

word

2 R/W

590 41425

Status of digital input #1

0: Low

word

2 R

Chapter 5 Parameters and Functions

5-29

5_ 5_

1: High

255: Disable

591 41426

Status of digital input #2

0: Low

1: High

255: Disable

word

2 R

592 41427

Status of digital input #3

0: Low

1: High

255: Disable

word

2 R

593 41428

Status of digital input #4

0: Low

1: High

255: Disable

word

2 R

594 41429

Status of relay output #1

0: Open

1: Closed

Note: register 0x58C can o nly

be written when the value is
set to 15

word

2 R/W

595 41430

Setting of relay output #2

0: Open

1: Closed

Note: register 0x58D can o nly

be written when the value is
set to 15

word

2 R/W

6. Parameter Group: 0600 – 06FF

600 41537 Read data from group 1

2 R

601 41538 Read data from group 2

2 R

…

…

…

2 R

609 41546

Read data from group 10

2 R

DPM-C501L Operation Manual

5-30

_5

MEMO

6-1

Chapter 6 Error Codes

Table of Contents

6.1 Error Codes ......................................................................................... 6-2

6

DPM-C501L Operation Manual

6-2

_6

6.1 Error Codes

When an error occurs during operation, the power monitor sends an error code through Modbus. The following
table lists the error codes and causes.

Error Code Name Description

0x01 Illegal function Incorrect function code

0x02 Illegal data address Incorrect data address to read or write

0x03 Illegal data value Incorrect data format (for example, data length)

0x04 Slave device failure Slave cannot execute the command.

A-1

Appendix A Accessories

Table of Contents

A.1 DCT1000 Series ...................................................................................A-2

A.2 DCT2000 Series ...................................................................................A-4

12 A

DPM-C501L Operation Manual

A-2

_A

When measured current is higher than the rated specification for the device, use of an external current
transformer (CT) is necessary.

A.1 DCT1000 Series

Electromagnetic Compatibility: CE-marking, IEC61869-2.

Model

Number

Measurement

Accuracy

Primary

Current

Secondary

Current

Rated

Burden

(VA)

External

Dimension*1

(mm)

Size of

Opening*1

(mm)

DCT-S301C 1.0% 100 A 5 A 1.5

90 x 40 x 111 21 x 32

DCT-S211C 0.5% 200 A 5 A 1

DCT-S221C 0.5% 300 A 5 A 1.5

DCT-S231C 0.5% 400 A 5 A 2.5

DCT-S241C 0.5% 500 A 5 A 2.5

116.5 x 52 x 147 50 x 80

DCT-S251C 0.5% 600 A 5 A 2.5

DCT-S261C 0.5% 750 A 5 A 2.5

DCT-S271C 0.5% 1000 A 5 A 5

DCT-S281C 0.5% 1500 A 5 A 7.5

146.5 x 51.6 x
198

80 x 122

DCT-S291C 0.5% 2000 A 5 A 10

186.5 x 52 x 252 81 x 160.5 DCT-S2A1C 0.5% 2500 A 5 A 15

DCT-S2B1C 0.5% 3000 A 5 A 20

*1: See the following table for detailed information on the external dimensions and sizes of openi ng.

Appendix A Accessories

A-3

A_

Model

Number

Dimension (mm)

DCT-S301C

External Dimension:
90 x 40 x 111

Size of Opening: 21 x 32

DCT-S211C

DCT-S221C

DCT-S231C

DCT-S241C

External Dimension:

116.5 x 52 x 147

Size of Opening: 50 x 80

DCT-S251C

DCT-S261C

DCT-S271C

DCT-S281C

External Dimension:

146.5 x 51.6 x 198

Size of Opening: 80 x 122

DPM-C501L Operation Manual

A-4

_A

DCT-S291C

External Dimension:

186.5 x 52 x 252

Size of Opening:
81 x 160.5

DCT-S2A1C

DCT-S2B1C

A.2 DCT2000 Series

Electromagnetic Compatibility: UL, UL2808.

Model

Number

Measurem

ent

Accuracy

Primary
Current

Secondary

Current

Rated Burden

(VA)

External

Dimension*1

(mm)

Size of Opening*1

(mm)

DCT-S201B 1.0% 100 A 5 A 1

90 x 40 x 110 20 x 30

DCT-S211B 0.5% 200 A 5 A 1

DCT-S221B 0.5% 300 A 5 A 1.5

DCT-S231B 0.5% 400 A 5 A 1.5

115 x 57 x 158 50 x 80

DCT-S241B 0.5% 500 A 5 A 2.5

DCT-S251B 0.5% 600 A 5 A 2.5

DCT-S261B 0.5% 750 A 5 A 2.5

DCT-S2C1B 0.5% 800 A 5 A 3.75

DCT-S271B 0.5% 1000 A 5 A 5

*1: See the following table for detailed information on the external dimensions and siz es of openi ng.

Appendix A Accessories

A-5

A_

Model

Number

Dimension (mm)

DCT-S201B

External Dimension:
90 x 40 x 110
Size of Opening:
20 x 30

DCT-S211B

DCT-S221B

DCT-S231B

External Dimension:
115 x 57 x 158
Size of Opening:
50 x 80

DCT-S241B

DCT-S251B

DCT-S261B

DCT-S2C1B

DCT-S271B

DPM-C501L Operation Manual

A-6

_A

MEMO