Manual for Low-Voltage Electronic Watt-Hour Meter(DSC-DS40)_20130521

8/9/2019 Manual for Low-Voltage Electronic Watt-Hour Meter(DSC-DS40)_20130521

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Read this manual carefully, and ensure that it is accessible to operating and

service personnel at all times.

For safe and correct use of this product, it is essential to read this manual

thoroughly before installation and maintenance.

Additional information is provided for potential hazards which may arise from

improper use. Special markings for DANGER, WARNING, and CAUTION are

as follows.

This recordable electronic watt-hour meter adopts an advanced programming function and

the hourly metering (TOU) function which can calculate an hourly rate on-site or remotely

and meter the amount of active power (kWh) and ground reactive power (Lagging, KVarh), a

maximum demand (kW), a power factor, etc.

DSC-DS40

Dimensions & Connections diagram

1. Introduction

Safety markings are classified as three types: DANGER, WARNING, and CAUTION as

below.

DANGER Serious injury or death is likely to occur immediately if violatingthis marked instruction.

WARNING Serious injury or death is likely to occur occasionally if violatingthis marked instruction.

CAUTION Minor injury or product damage is likely to occur if violating thismarked instruction.

Manual for Low-Voltage Multi-Function

Electronic Watt-Hour Meter

Communication

120.0

165.0

75.0

Input Output


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Type Static, Electronic single phase watt-hour meter

StandardIEC 62052-11, IEC 62053-21, IEC60529, IEC60387, ISO 75-1,DIN 43857, IEC 6100-4-2, IEC6100-4-4

Measuring scope Active energy

Class index Class 1

DisplayDisplay with 5 integer digits and 1 decimal digit, testing in absenceof voltage, with internal lithium battery

Meter registration mode By-directional

Network 1 phase 2 wire

Reference voltage 120V, Limit of resistance of 250V

Operating voltage range -20% to +15%

Frequency 60 Hz

Power consumptionVoltage circuitCurrent circuit

Basic current 5A

Maximum current 60A

Meter constant Minimum, 1000 imp/kWh

Constant of reading kWh x 1

Indicators Forward energy indicated by red LED

Operating temperature range -20to +70

Limited temperature range ofoperation

-40to +70

Limited transportation range for

storage-40to +70

Degree of protection (IEC 60529) IP54 or IP53 with protective box that will allow for IP54

Terminals connections Symmetric

Terminal materialStainless steel (Ensure that will not oxidized during productlifetime)

Connections DIN 43857

Pulse output (IEC62053-31) Yes

Material Meter case, base and terminal cover recyclable polycarbonate

Terminal cover seals Long cover with drilling for wire

Battery1,200 mAh, 3.6 V (non-rechargeable), days of outage

compensation: 200 cumulative daysNumber of metering channels 2 channels (active power, ground reactive power)

Rated voltage is the voltage applied to the voltage circuit, and it is a phase voltage in the 3-phase, 4-

wire instrument.

CAUTIONThis meter should be installed or tested in accordance with [Chapter 3.Installation Method].

WARNINGALWAYS apply a rated current to the meter, and use within the ratedcurrent range. Out-ranged current use may cause burnout.

1) Make sure that the power of the watt-hour meter is OFF, and then connect the wires as

shown by the wiring diagram below (note that the identical wiring diagram is shownon each terminal cover).

WARNING1. ONLY certified personnel may connect wires.

2. Check the phase sequence when the 3-phase, 4-wire meter is wired.

2) To supply DC power to the circuit unit, SMPS (Switching Mode Power Supply) is used.

Working voltage is the rated voltage of 220 V, and the range of use should be -20% ~

+15%.

CAUTION

1. Ensure terminal connections are correct, and the screw tightening torque

of external wires is as follows.

(1) 5A, 40A type: within 131.6 kgf.cm(2) 120 A type: within 10012 kgf.cm

2. Short-circuit of power or current release may cause burnout or fire.

3) Mount the meter approximately 1.8 m above from the floor so that the value on the LCD

display can be read.

CAUTION1. It may be difficult to read the value on the LCD display if installed

below eye level.

4) After installation is completed, install a 3.6 V battery, and then seal the cover of the set-

up compartment.

5) Install the connecting port of the on-site access device to avoid direct sunlight or light

sources (flash, etc.).

The setup unit of the meter can modify or change settings as below.

1) Choose the item you want to change.

- Choose the item you want to change while pressing the MENU button sequentially.

4 Setup Unit

3. Installation Method

2. Rating and Specification


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Display and Description for each item are shown in the following table.

Item Description Display Initial value Remark

S1 Current date 07.11.20 00.01.01

S2 Current time 13:10 00:00

S3 Scheduled reading date 01 01

S4 Metering type 1 2 1:1, 2:2

S5 Sectional rate setup 2121 12001200, 2100, 1212, 2121

sequential display

S6 Start time of 1stsection 00:00 09:00

S7 Start time of 2nd section 06:00 23:00

S8 Start time of 3rd section 12:00 00:00

S9 Start time of 4th section 18:00 00:00

SA Additional signal function 01 01 See [External output]

Sb Maximum demand interval 15 1515:15 min, 30:30 min, 60:60

min

SCInstrument identification number

(upper)06141

Designated by

supplier (Unable

to modify)

Total 11-digit

Supplier code (2) + Type (2) +Serial number (7)Sd

Instrument identification number

(lower)234567

2) Move cursor left or right to modify.

- Press MOVE button to move the cursor left. Place the cursor where you want to modify or

change data.

3) Change of data

- If the INPUT button is pressed, the value where the cursor is currently located increases in

increments of 1. Modify the value to what you want.

4) Return to the normal display mode.

- It will revert to the normal display mode after all settings are displayed.

- Press and hold the MENU button for 2 seconds or longer to return to the normal display

mode in the middle of value setting.

CAUTION

1. If the metering type (S4) is 1, the setup screens of the sectional rate setup (S5)

and the start time of 1st~4thsections (S6~S9) do not appear.

2. If the sectional Rate setup is 1200 or 2100, the setup screens of the start time of

the 3rdand 4th(S8~S9) sections are not shown.

3. Only if there is no continuity error of the sectional start time after S5~S9

setting, the SA screen appears with the confirmed values of S5~S9. The values

are not confirmed until the SA screen appears.

LCD parts names and descriptions are listed in the following table.

Name Function

Display items

1. Indicate the date, time, amount of power, maximum demand, automated meter

reading date, etc.2. The amount of power is 6-digit, and displaying digits for each metering item are

shown below.

Type Classification Integer partFractional

part

Single instrument,

single phase

Active and reactive

power5-digit 1-digit

Maximum demand 4-digit 2-digit

Single instrument, 3

phase

Active and reactive



MOF (Metering

Outfit)

Active and reactive



Number ofdisplay items

Indicates the sequence of the displayed items as 2-digit.

Battery/memoryerror indicator

Indicates battery or memory malfunction with an Error indication. See [7.2 Displaymethod of event mode].

Currently

metering time

indicator

Class 1: Indicates A onlyClass 2: Indicates both A and B (blinking during the corresponding time)

Communicationprocess

indicatorIndicates whether the instrument is under communicating.

Meteringindicator

Indicates that the instrument is working correctly, and the indicator blinks under theload, but it is off without the load.

Metering unit Shows a unit of currently metering value.

Voltageindicator

Checks whether the voltage is loaded, and the corresponding voltage is displayedunder the voltage load. If the applied voltage is lower than 80% of the requiredlevel of the rated voltage for 16 seconds or longer, the indicator blinks.

5. LCD Parts Names and Functions

Display items

Currently metering time indicator

Metering indicator

Metering unit

Number of display items

Error indicator

Voltage indicatorBattery/memoryerror indicator

ommunication process indicator


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1. The instrument sequentially displays each display item for 6 seconds by the designated

metering type (Class 1 or Class 2).

2. Items and sequence on the LCD display are as follows.

Number Class 1 Class 2

1 Current date Current date

2 Current time Current time

3 Current cumulative active power (kWh) Current cumulative active power (kWh)-A

4Current cumulative reactive power

(kVarh)Current cumulative active power (kWh)-B

5Previous month cumulative active power

(kWh)Current cumulative reactive power (kVarh)-A

6Previous month cumulative reactive

power (kVarh)Previous month cumulative active power (kWh)-

A

7 Previous month cumulative maximumdemand (kW)

Previous month cumulative active power (kWh)-

B

8 Previous month average power factor (%)Previous month cumulative reactive power

(kVarh)-A

9 Scheduled meter-reading date Previous month cumulative maximum demand(kW)-A

10Previous month cumulative maximum demand

(kW)- entire

11 Previous month average power factor (%)

12 Scheduled meter-reading date

CAUTION 1. External operation button (set-up unit) can switch the metering class(Class 1, Class 2) of the meter.

Example of display

< Description of display >

Shows the 5th

Indicates that the normal voltage is applied tothe R-phase

display item of the designatedprogram

Indicates that the current meter is undercommunication communicating

The operation indicator blinks when the meter

is working under the load

Displays a 6-digit value of the 5th

Shows the kWh unit of the displayed item

display item

Display method of even mode

1. If the Error indicator blinks regardless of whether the other indicators are working, the

current event mode is displayed (it does not appear for normal conditions).

Cause Display

Memory error Error indicator at the bottom left and MEM indicator blink.

Battery error Error indicator at the bottom left and BAT indicator blink.Reverse metering

Error indicator at bottom left blinks and the last item of sequential displayshows 000002.

Current open phase

(when CT isdisconnected)

Error indicator at bottom left blinks and the last item of sequential displayshows 000003.

Err 000003 is displayed if the CT in the meter is disconnected.

The timekeeping unit of this meter consists of RTC (Real Time Clock) and a 3.6 V battery.

Even if power outage occurs, there is no problem to maintain the current time since an

auxiliary battery supplies power to RTC automatically. The period of outage compensation

is more than 200 days.

CAUTION

1. Use the genuine battery of the manufacturer when the external 3.6 V

battery is replaced.

2. When the battery is replaced due to lower battery voltage, RTC time

(the meters time) is maintained if the meter is powered, otherwise, the

time is initialized as 2000.01.01.

8. Timekeeping Unit

7. How to Read the Display6. Chart for Display Items


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The meter can export one of the metering pulsed active power and reactive power, the gate

signal of remote load and time switch through an auxiliary terminal. Through an auxiliary

terminal, the meter can export alternatingly one of four; the metered pulse of the amount of

active power and (the metered pulse of the amount of) reactive power, the gate signal of

remote load and (the gate signal of) time switch.

The signal type can be chosen either on the setup unit in the field or remotely with aremote-metering unit.

CAUTION

1. Use an electronic relay (SSR) rather than a mechanical type when the

gate signal of the time switch is used.

2. Make sure that the allowable voltage (DC 24 V or less) and the

allowable current (12 mA or less) are used when connecting with other

systems.

3. Refer to below for the output

circuit diagram at the standard output terminal.

4. Confirm the polarity (C1, C2) of the pulse output terminal on the

meter.

Selectable

Input Number Output Signal

01 Metering pulsed activepower

02 Metering pulsed reactivepower

03 Gate signal of remote load

04 Gate signal of time switch

C1

C2

- +

DC

(+12~24V)

- ~

SSR

+ ~MS

3 220V

~

R S T

U V W

AC220V

C1

C2

- +

DC

(+12~24V)

- ~

SSR

+ ~MS

3 220V

~

R S T

U V W

AC220V

The watt-hour meter adopts a communication interface that can transfer the metered and

recorded data to PC via a dedicated modem and on-site access unit.

CAUTION

1. A designated communication board compatible with the modem port of

the meter for communication MUST be used.

2. Otherwise, communication may fail and cause severe damage to the

meter.

The meter is equipped with a temporary read function under the zero voltage condition.

Even in the case of a power outage, the metering value can be displayed on LCD if an

auxiliary 9 V battery is installed into a 3-PIN connector under the zero voltage condition

after opening the cover of the setup compartment at the upper part of the meter.

For no 3-PIN connector, the metering value can be sequentially displayed on the LCD with

the MOVE button.

DANGER

Installation or disassembly with the power ON may cause electric

shock or fire.

Contact with PLC terminal to a live wire may cause an electric shock

when the cover of the setup unit is opened when the power is ON.

11. Temporary Read with Zero Voltage

10. Communication Unit

9. External Export

Power supply

< Schematic Diagram of Pulse Output>

Interface of other systems

Meter C1,

pulse output terminal

Meter C2,


Meter C1,


Meter C2,


AC 3-phase

Unit for midnight power

Midnight power- +

DC powersupply (+12 ~ 24V)

Manual for Low-Voltage Electronic Watt-Hour Meter(DSC-DS40)_20130521

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