ENTES EPM-04, EPM-04C, EPM-04CS User guide

1

MULTIMETER

EPM-04 / 04C / 04CS

INDEX

Precautions for Installation and Safe Usage.........................................................................1

Front Panel and Usage of Buttons.............................................................................1

General Information and Applications.............................................................................1

Using the Buttons............................................................................................2

Transformer Menu (Ctr / trn / Utr / ConnECtýon) ........................................................................2

User Password Settings (Pin Menu).......................................................................2

Activating the User Password (Pin Act Menu)......................................................2

Changing the User Password (Pin CHg Menu).........................................................2

Output Setting Menu ..............................................................................3

Current Setting Menu (SP Current Menu) ................................................................3

High/Low Current Settings (SP Cur Hý, SP Cur Lo Menu)..........................................3

Hysteresis Settings for High/Low Currents (I-H Hys, I-L Hys Menu).................3

Delay-on Time for High/Low Currents (I-H ond, I-L ond Menu)..............................3

Delay-off Time for High/Low Currents (I-H ofd, I-L ofd Menu).......................................3

Start and Auto Function (StArt dEL and Auto rSt Menu).........................................4

Instant Trip Function (CUr ýnS trP Menu).................................................................4

Voltage Setpoint Menu (SP Volt Menu) ..................................................................4

High/Low Voltage Settings (SP UoL Hý, SP UoL Lo Menu)..................................4

Hysteresis Settings for High/Low Voltages (U-H Hys, U-L Hys Menu)............5

Delay-on Time for High/Low Voltages (U-H ond, U-L ond Menu).............5

Delay-off Time for High/Low Voltages (U-H ofd, U-L ofd Menu)................5

Frequency Menu .........................................................................................................6

High/Low Frequency Settings (Frq Hý, Frq Lo Menu).............................................6

Hysteresis Settings for High/Low Frequencies (F-H HyS, F-L HyS) ..............................6

Delay-on / Delay-off Time for High/Low Frequencies (Frq ond, Frq oFd)....6

Phase Sequence (Voltage Sequence Menu) and Instant Trip (UoL ýnS trP Menu) Menu ........6

Erasing the Max., Min. and Max. Demand Values (Reset Menu)........................6

Demand Time for Demand and Max. Demand (dE tý Menu)....................................................7

Communication Menu (RS-485) .........................................................................7

Technical Features and Default Factory Settings ................................................................7

Connection Diagram ................................................................................................8

Output, SP Current and SP Volt menus are available for EPM-04C/04CS; RS-485 menu
is available for EPM-04CS.

Dimensions

General information

EPM-04/04C/04CS is designed for measuring Phase current, frequency, neutral
current and voltages (Phase-Phase and Phase-Neutral) in a
3-Phase system.

EPM-04C/04CS;
Device has 2 warning

output

which named as Out1 and Out2. (NO-Normally

Open) Please refer to Output menu for the functions of the relays.

Connection Diagram

MULTIMETER

EPM-04 / 04C / 04CS

8

A4034 / Rev.8

Available only for EPM-04C/04CS
Available only for EPM-04CS

Panel Cut-out

91mm

91mm

Type PR 19 (96x96)

70mm

Wall

79.3mm

90mm

Tip 19

50mm

1 .......

Phase LEDs:The LEDs turn on when the voltage value, which is applied
to one of the current inputs, reach 30 V

2 ....... First displays k LED (for L1). Measurement parameter is the unit of kilo

when LED is turned on. ie: kA, kV

3 ....... Display for

L1.

4 ....... Second displays k LED (for L2). Measurement parameter is the unit of kilo

when LED is turned on. ie: kA, kV

5 ....... Display for

L2.

6 ....... Third displays k LED (for L3). Measurement parameter is the unit of kilo

when LED is turned on. ie: kA, kV

7 ....... Display for

L3.

8 ....... Displays network frequency when Hz LED is turned on.

9 ....... k LED for neutral current. Measurement parameter is displayed in unit of

kilo when this LED is turned on.

10 ....... Display for neutral current and frequency (for EPM-04C/04CS).

11 ....... First warning output LED (Out1). Turned on when the output is activated.

12 ....... Second warning output LED (Out2). Turned on when the output is activated.

13 ....... Over current / voltage warning output for L1. (EPM-04C/04CS)

14 ....... Low current / voltage warning output for L1. (EPM-04C/04CS)

15 ....... Over current / voltage warning output for L2. (EPM-04C/04CS)

16 ....... Low current / voltage warning output for L2. (EPM-04C/04CS)

17 ....... Over current / voltage warning output for L3. (EPM-04C/04CS)

18 ....... Low current / voltage warning output for L3. (EPM-04C/04CS)

19 ....... Over current / frequency warning output for frequency and neutral current

(EPM-04C/04CS).

20 ....... Low current / frequency warning output for frequency and neutral current

(EPM-04C/04CS).

21 ....... Monitoring the L1, L2, L3 voltages values when V LED is turned on and

displays the frequency in 4th display.

22 ....... Monitoring the L1, L2, L3 currents values when A LED is turned on and

displays the neutral current in 4th display.

23 ....... Indicates the activating delta connection when

is turned on. Neutral

current protection is disactivated even if is activated.

24 ....... H LED for max. instant current and voltage. Max. instant currents and

voltages are displayed when this LED is turned on.

25 ....... L LED for min. instant current and voltage. Min. instant currents and

voltages are displayed when this LED is turned on.

26 ....... M LED for max. demand. Max. demand values are displayed when this

LED is turned on.

27 ....... SET button. It is used to enter into the menu and to save the values.

If SET button is pressed for 3 sec. in the measurement mode, you can
enter into menus. This button is used for monitoring the max. (H), Min.

(L) current values and max. demand values in measurement mode.

28 ....... Downward selection button.

29 ....... Upward selection button.

30 .......

ESC button. Escaping from the menu. And also used for switching off the
Latch function while this function has activated.

Failure to follow those instructions will result in death or serious injury.

- Disconnect all power before working on equipment.

- When the device is connected to the network, do not remove the front
panel.

- Do not try to clean the device with solvent or the like.Only clean with dry
cloth.

- Verify correct terminal connections when wiring.

- Electrical equipment should be serviced only by your component seller.

- Only for rack panel mounting.

- Fuse must be F type and limit value doesnt exceed 1A.

- No responsibility is assured by manufacturer or any of its subsidiaries
for any consequences arising out of the use of this material.

~

U

n

Out 2 Out 1

PK-26

IL3IL2I

L1

k

l

K L

k

l

K L

k

l

K L

L1 L2 L3 N

GND A B TR

N

L1

L2
L3

1

A

Current Measurement

Inputs

Auxiliary

Supply

Relay output

System

Choose according to

contactor current

Voltage Measurement

Inputs

RS485

70mm

79.3mm

90mm

Type PR 19 (96x96)

96mm

96mm

60.6

106.0

10.8

30.1 7.6 9.5

26.5 21.5

53.0

58.0

10.0

8.5

14.0

45.0

90.0

Type PK 26

*
**

12 4 63 5 7

8 9

10

19 20

30

27

28 29

25

24

26

21 22 23

12 11

17

18

15

16

13

14

2

3

4

5

6

7

8

9

10

15

17

19

18

16

13

14

2021 22 23

27

25

24

30

28

29

26

1 11 12

Note: For CT-25 models:

PR-19

k

l

K L

k

l

K L

k

l

K L

I

L1

I

L2

I

L3

Out 1

Out 2

GND B A TR

17 18

19 20

RS485

System

N

L1

L2

L3

1 A

L1
L2
L3
N

Current Measurement Inputs

Auxiliary

Supply

1 2 3 4 5

6

11 12

Output Relay

13 14

15 16

Choose according to

contactor current

7 8 9 10

Voltage Measurement Inputs

In CT-25 (120A) compliant models, only CT-25 current transformer
must be used.
Other type of CTs have a high risk to damage to device.

PRECAUTIONS FOR INSTALLATION AND SAFE USE

Summary of the Contact Operations

Voltage
Frequency
Current
Phase Seq.

Voltage
Frequency
Current

Under
Under
Under

Over
Over
Over

ALTERNATIVE 2 (H-L)

Current

Voltage
Frequency
Phase Seq.

Under/Over

Under/Over
Under/Over

ALTERNATIVE 1 (U-I)

Out 1

Out 2

-->

-->

-->

-->

-->

-->

-->

-->

-->

Valid for EPM-04C/04CS

k: When CT-25 is used, Red cable is connected to k terminal.
l: When CT-25 is used, Black cable is connected to l terminal.

User Password Setup:

In this menu user password is defined and activated.
You must define and activate a 4 digit user password for preventing device
settings from the illegal usage.
There are 2 sub menu in the Pýn menu.

ESC

SET

Press ESC button one by
one until SAU E SEt yES
is displayed.

Press SET button. When
SAU E SEt yES is
displayed (If you press
ESC button or choose no option instead of yES then new data will
be cancelled and previous value will be activated).

This menu is used for activating the user password.
After the user password is activated for entering to the menus;
if the button is pressed for 3 sec., while the instant values
are observed, user password is required. If the user password
is entered wrong device does not latch.

Note: Factory default value of user password is 0000

Activating the user password :

Press SET button for 3 sec. (trA Fo menu is displayed)

Find the Pýn menu by scrolling UP/DOWN buttons.

Press SET button (Pýn ACt IUA tE is displayed.)

SET

SET

SET

SET

2

MULTIMETER

EPM-04 / 04C / 04CS

Using the Buttons:

Some buttons and button groups are used for the below special function
when device is in the measurement mode (Without selecting a menu).

: Switching to the previous menu and escaping the programming

menu without saving the changes.

If the Latch function is turned on (EPM-04C/04CS); output will be
released when current(s) of system is exceed the defined values.
When the systems current turns back to normal values then output
doesnt react. Output can be trigged by the ESC button.

Monitoring for phase currents (A LED is activated) or phase voltages

(V LED is activated).

Used for changing the menu settings and parameters in programming

mode.

ESC

Commissioning the EPM-04C/04CS and menu setting:

Energize the device after implementing the connections respected to the
user manual.
Enter the proper menu settings in order to correct measurements and
applications.

Current Transformer Ratio Setup:

In this menu, current transformer ratio is set between 1 - 2000.
(This menu is not available in the devices which are adapted
with CT-25.)
Note: If the current transformer is not used between the system
and device, current transformer ratio is entered as 1.
Example: If a current transformer which has a ratio of 30/5A is
used between the system and device;
Current transformer ratio is entered as = 30/5 = 6.

SET

: Used for monitoring min. / max. currents and voltages or max. demand
values. Switching to the programming mode if it pressed for 3 sec. In
programming mode; it is used for switching to the menu and saving
changes for the parameters.

SET

SET

ESC

SET

Press SET button; trA Fo Ctr menu is displayed (In CT-25 adapted
devices, trA Fo trn is displayed instead.)
(Not: trA Fo Utr or Con nEC týo n menu can be displayed by scrolling
the UP/DOWN buttons.)

Press SET button. Blinking the first digit of displayed value appears.
(trA Fo Utr or Con nEC týo n menu can be
programmed similarly.)

Enter the blinking digit value by scrolling
UP/DOWN buttons. Switch to the other
digits by using SET button, use ESC button
to go to previous digit. After you entered
the last digit press SET button, trA Fo Ctr
is displayed.

(Data is entered but is not
activated yet. For activating the new data
please follow the below steps).

SET

Press SET button for 3 sec. (trA Fo menu is displayed)

Voltage Transformer Ratio:

In this menu, voltage transformer ratio is set between 0000,1 - 4000,0.
Note: If the voltage transformer is not used between the system and

EPM-04, voltage transformer ratio is entered as 1.

Example: If a voltage transformer which has a ratio of 34.5KV/100V
is used between the system and device; Voltage transformer ratio
is entered as 345. (34500/100)

Selecting the Connection Type :

Connection can be selected as Star or Delta in this menu.

Phase-Neutral voltage monitoring can be implemented if the Star
connection is selected.

Phase-Phase voltage monitoring can be implemented if the Delta
connection is selected.

NOTE: When the Delta connection is selected, neutral current
monitoring can not be implemented even if it is activated.

SET

Press ESC button one by one until
SAU E SEt yES is displayed.

Press SET button. When SAU E
SEt yES is displayed (If you
press ESC button or choose no
option instead of yES then new
data will be cancelled and
previous value will be activated).

Press SET button. Blinking the first digit of displayed value appears.

Enter the blinking digit value by scrolling
UP/DOWN buttons. Switch to the other
digits by using SET button, use ESC button
to go to previous digit. After you entered
the last digit press SET button, Pýn ACt
oF is displayed.on can be selected by
scrolling UP/DOWN buttons.

(Data is
entered but is not activated yet. For
activating the new data please follow the
below steps).

SET

Programming the Turn Number:

This menu is available for CT-25 adapted devices. User defines the
turn number, which is the number of how many tour the current
cable has rounded into the CT-25. Numbers can be selected
between 1-20. Greater the number of turn means greater the
sensivity.

Press SET button 3 sec. (trA Fo menu is displayed.)

Find the Pýn menu
by scrolling
UP/DOWN buttons.

Press SET button
(Pýn ACt IUA tE is
displayed.)

SET

SET

Find the Pýn CHA n9E menu by scrolling UP/DOWN buttons.

Changing of User Password:

This menu is used for changing the user password .
Note: Factory default value for user password is 0000

Press ESC button one by
one until SAU E SEt
yES is displayed.

ESC

SET

MULTIMETER

EPM-04 / 04C / 04CS

7

Serial Communication (for EPM-04CS)

EPM-04S have MODBUS RTU communication protocol which is optical
isolated. All measured parameters can be transfer to the
computer.Transformer ratios and communication parameters can be
set. Saved values can be reset.
Programmed parameter for communication explained below.

Press SET button 3 sec.
(trA Fo menu is displayed.)

Find RS-485 menu by
scrolling UP/DOWN
buttons.

Press SET button (Adr ESS menu is
displayed.)

Enter the parameter values by scrolling UP/DOWN buttons
(001...247 / 2400...38400 /no, EUEn, odd).

Press SET button, Adr ESS / bAU d / PArýty is displayed.

(Data is
entered but is not activated yet. For activating the new data please
follow the below steps)

Press ESC button one by one until SAU E SEt yES is displayed.

Press SET button. When SAU E SEt yES is displayed (If you press
ESC button or choose no option instead of yES then new data will
be cancelled and previous value will be activated).

Find 

Adr ESS / bAU d / PArýty

menu

by scrolling UP-DOWN buttons.

SET

SET

SET

SET

ESC

SET

03H READ HOLD REGISTERS
06H PRESET SINGLE REGISTER
10H PRESET MULTIPLE REGISTERS

MODBUS RTU PROTOCOL

(

Available only for

EPM-04CS)

Standart MODBUS RTU message is shown below.

T

ADDRESS

8 BIT

FUNCTION
8 BIT

DATA
NX8BIT

CRCH CRCL T

The T times corresponds to a time in which data must not be exchanged on the
communication bus to allow the connected devices to recognize the end of one
message and the beginning of another. This time must be at least 3.5 characters
at the selected baud rate. Adress range (1-247) is address of the connected
device. The data field contains data sent to the slave by master or data sent to
master by slave.
CRC is a error check method by using MODBUS RTU protocol and consists of 2
bytes.

Available Modbus Function:

Read Hold (03) function is used for reading measured values and set value. If any
request of reading of a register, excepted mentioned in register table, device will
send an error message.
For example to read phase1 voltage by sending a message to the device.

01 03 00 00 00 02 XX XX
01

Device address

03

Function

00

MSB address

00

LSB address

00

Register number MSB

02 Register number LSB
XX CRC MSB
XX CRC LSB

Preset Multiple Register(10H) is used to set more then one register at same time.
i.e. Setting CT as 100, Ut as 20.0;
01 10 80 00 00 02 04 00 C8 00 64 XX XX
01 Device Address
10 Function
80 MSB address
00 LSB address
00 Register number MSB
02 Register number LSB
04 Byte count
00 Data MSB
C8 Data LSB
00 Data MSB
64 Data LSB
XX CRC MSB
XX CRC LSB

Preset Single Register (06) function is used for writting the setting values, erasing
the energy counter or resetting the min., max., max. demand values.
Current transformers ratio can be set 0-2000, voltage transformer ratio can be set
1-40000.
i.e. Setting CT as 100;
01 06 80 02 00 64 XX XX
01 Device address
06 Function
80 MSB address
02 LSB address
00 Data MSB
64 Data LSB
XX CRC MSB
XX CRC LSB

Default Settings

Ctr - 0001

Utr - 0001

trn - 01

ConnEC - StAr

Frq Hý - 63

F-H HyS - 01.00

Frq Lo - 47

F-L HyS - 01.00

Frq ond - 003.0

Frq oFd - 003.0

bAUd - 9600

AddrES - 001

PArty - no

I-H L-1 - 5.000

I-H L-2 - 5.000

I-H L-3 - 5.000

I-H L-n - 5.000

I-H HyS- 0.100

I-H ond - 010.0

I-H oFd - 010.0

I-L L-1 - 0.000

Pin Act - oF

Pin - 0000

dt - 15

Out relay - U-I

Latch - oFF

Out Inverse - oFF

I-L L-2 - 0.000

I-L L-3 - 0.000

I-L L-n - 0.000

I-L HyS - 0.200

I-L ond - 010.0

I-L oFd - 010.0

Str Art dEL - 0.000

Auto reset - oFF
Cur ýns trip - oFF

U-H L-1 - 250

U-H L-2 - 250

U-H L-3 - 250

U-H HyS - 10

U-H ond - 003.0

U-H 0Fd - 003.0

U-L L-1 - 180

U-L L-2 - 180

U-L L-3 - 180

U-L HyS - 010.0

U-L ond - 003.0

U-L oFd - 003.0

VoL PHS SEq - oFF

VoL ýnS trýP - oFF

Press SET button. When
SAU E SEt yES is
displayed (If you press
ESC button or choose
no option instead of yES then new data will be cancelled and
previous value will be activated).

Technical Features

Rated Voltage (Un)

:

Please look at back side of the device.

Operating frequency (f)

: 45-65 Hz

Auxiliary Supply Power Consumption

: < 4 VA

Measuring Input Power Consumption

: < 1 VA
Measurement range
Current : 0.05-5.5A~

: 2 - 120 A~ for CT-25
Voltage : 10-300 V AC (Phase - Neutral)

10-500 V AC (Phase - Phase)

Class : 1±1% digit [(10%-100%) x full scale]

Current Transformer Ratio

: 1 ... 2000

Turn number for CT-25 adapted models : 1 .... 20

Voltage Transformer Ratio

: 1 ... 4000
Max. Ctr x Vtr : 40.000

Communications (for EPM-04CS) : MODBUS RTU (RS 485)

Optic isolated, programmable
Baud Rate (for EPM-04CS) : 2400-4800-9600-19200-38400 bps
Address (for EPM-04CS) : 1-247
Parity (for EPM-04CS) : No, Odd, Even, 8 Data Bits, 2 Stop Bits

Output Relays(for EPM-04C/04CS) : 2 NO, 250 V AC, 5A, 1250 VA
Ambiant Temperature : -5°C; +50°C
Display : Red LED display
Dimensions : PR-19, PK-26
E

quipment Protection Class

: Double Insulation - Class II ( )

Box Protection Class

: IP 40

Terminal Protection Class

: IP 00

Box Material

: Nonflamable

Mounting

:

Panel Mounted

(PR-19)

Rail Mounted

(PK-26)

Wire Cross section (for terminals) : 2.5 mm

2

Weight :

0.56 kg (PR-19)

0.52 kg (PK-26)

Mounting Category

: Class III
Panel Size : 91x91 mm (PR-19)

46x107 mm (PK-26)

Below measurement and application can be implemented with
EPM-04/04C/04CS.

1) Phase currents (IL), Neutral current (IN), Phase-Phase and Phase-Neutral

voltages can be measured .

2)

Existence of live phases can be observed by L1-L2-L3 LEDs on the device.

3) Min. and max. values for measured currents and voltages can be monitored
with only one button.

4) Max. demand values for measured current can be monitored, demand
time can be defined in dE tý menu.

5)

A 4 digit password can be defined from pin menu in order to prevent the

change of settings by unauthorized person.

6) Current transformer ratio is programmable. (1 .... 2000)

Current transformer ratio can be programmed in term of turn number

between 1.....20 (for CT-25 adapted devices).

Voltage transformer ratio is programmable. (0.1 .... 4000)

7) A user defined measurement range is used for monitoring the voltages

and currents; and Out1 & Out2 outputs are used for warning the user and
disconnecting the device in case of exceeding the limits of measurement
range.

8) In case of using the device for measuring the current values of motors etc.,

start delay (AUto rSt) function can be used for preventing the equipment
against the improper tripping, which is because of the demurrage current.

9) When a failure has occured use the Latch function, in order to keep the

device with saving its position (Latched), even if the failure conditions are
removed.

7th, 8th and 9th subjects are valid for EPM-04C/04CS.

Press SET button (001 / 9600 /no menu
is displayed.)

EPM-04CS COMPUTER CONNECTION

31 DEVICES CAN BE CONNECTED AT THE SAME LINE

GNDTR B A

GNDTR B A

GNDTR B A

GND

B

A

RS485/RS232
CONVERTER

PC

..

.

EPM-04CS-1EPM-04CS-2EPM-04CS-31

MAX. 1200 mt.

MAX. 247 DEVICES CAN BE CONNECTED AT SAME LINE BY USING REPEATER.

GND

TR

B

A

..

.

EPM-

04CS

-247

GND

B
A

RS485/RS232
CONVERTER

PC

..

.

EPM-

04CS

-1EPM-

04CS

-2EPM-

04CS

-31REPEATER

MAX. 1200 mt.

MAX. 1200 mt.

1

2.00
120

2

1.00

60.0

3

0.66

40.0

4

0.50

30.0

5

0.40

24.0

6

0.33

20.0

7

0.28

17.1

8

0.24

15.0

9

0.22

13.3

10

0.20

12.0

11

0.18

10.9

12

0.16

10.0

13

0.15

9.23

14

0.14

8.57

15

0.13

8.00

16

0.12

7.50

17

0.11

7.05

18

0.11

6.66

19

0.10

6.31

20

0.10

6.00

I-H L-1 - 100.0

I-H L-2 - 100.0

I-H L-3 - 100.0

I-H L-n - 100.0

I-H HyS - 2.000

I-H ond - 010.0

I-H oFd - 010.0

I-L L-1 - 0.000

I-L L-2 - 0.000

I-L L-3 - 0.000

I-L L-n - 0.000

I-L HyS - 2.000

I-L ond - 010.0

I-L oFd - 010.0

Str Art dEL - 0.000

Auto reset - oFF
Cur ýns trp - oFF

CT-25 type

.../5A type

For activating the user password, in the measurement mode

For activating the user password, in the measurement mode