MULTIMETER
EPM-07 / EPM-07S
Technical Data
Operating Voltage (Un)
Operating frequency (f) : 45-65 Hz
Auxiliary supply Power Consumption: < 4 VA
Measuring Input Power Consumption: < 1VA
VIn
IIn
: Please look behind the device.
: 10-300 V AC 45-65 Hz. (L-N)
: 10-500 V AC 45-65 Hz. (L-L)
: 0.05 - 5.5 A~
2-120 A~ (for CT-25)
Measuring Range
Class
Voltage Transformer Ratio (Vtr)
Current Transformer Ratio (Ctr)
Max. Ctr x Vtr
Demand Time
Serial Interface (for EPM-07S)
Baud Rate (for EPM-07S)
Address (for EPM-07S)
Parity (for EPM-07S)
Pulse Output
Switch Period
Operation Current
Operation Voltage
Input
Ambient Temperature
Display
Dimensions
Equipment Protection Class
Box Protection Class
Box Material
Installation
Wire Crossection (for terminal)
Weight
: 10V...200 kV AC
: 0...215 M (W,VAr,VA)
: 99999999999.9 kWh, kVArh
: 1% ± 1 digit [(10%-110%) xFull Scale]
: 0,1 ... 4000,0
: 1 ... 2000
: 40.000
: 1-60 min. (programmable)
: MODBUS RTU (RS 485)
Optically Isolated, programmable
: 2400-38400 bps
: 1-247
: No , Odd, Even, 8 Data bits, 2 Stop Bits
: NPN Transistor
: Min. 100 msec pulse perriod
80 msec pulse width
: Max. 50 mA
: 5.....24 V DC, max. 30 VDC
: 12...48 V AC / DC
: -5°C; +50°C
: Red LED Display
: PR-19, PK-26
: Double Insulation-Class II ( )
: IP 40 (front panel)
: Non-flammable
: Panel Mounted (PR-19)
Rail Mounted (PK-26)
: 2.5 mm
2
: 0.54 kg (PR-19)
0.50 kg (PK-26)
: Class III Installation Category
Factory Settings
Trafo (Transformer) :
Ctr (Current Transformer Ratio) : 0001 trn (Turn number for CT-25 device) : 01
Utr (Voltage Transformer Ratio) : 0001.0
CAL (Calculation Method) : 1
Eng Cnt :
E-1 (Energy Counter 1) : on
E-2 (Energy Counter 2) : on
Pin : 0000 (Not Activated)
PULSE : rAt ýo (Ratio) : 1 o-1 (Output 1) : A-I o-2 (Output 2) : r-L
RS-485 :
Adr (Address) : 1
Bau (Baud Rate) : 9600
PAr (Parity) : no
dEtý (Demand Time) : 15
Precautions For Installation and Safe Use
In CT-25 (120A) compliant models, only CT-25 current transformer must be used.
Other type of CTs have a high risk to damage to device.
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.
- No responsibility is assured by manufacturer or any of its subsidiaries for any consequences arising out of the use of this material.
- Only for rack panel mounting.
- Fuse must be F type and limit value doesnt exceed 1A.
No responsibility is assured by the manufacturer or any of its subsidiaries for any consequences arising out of the use of this material.
8
A4019/Rev.6
MULTIMETER
EPM-07 / EPM-07S
General
EPM-07/07S is a microprocessor based device which was developed for measuring the parameters in an electrical network. Measured parameters are displayed in 4 displays separately. EPM-07S has a MODBUS serial communication interface.
Phase
Displays
Total and
Hz Display
UP button
DOWN button
Phase Displays
UP button
ESC button
Max. LED
SET button
Minimum LED
Demand LED
Total and Hz. Display DOWN button
Using of EPM-07/07S:
Parameters (V
LN
; V
LL
; A; W; VAr; VA; Cosj; kWh, kVarh, THD) are monitored in L1, L2, L3 displays by pressing UP/DOWN buttons. Total Active (SW), Total
Reactive Power (SVAr), Total Apparent Power (SVA) and Frequency (Hz) values and average values of these parameters are monitored in 4th display.
Note: V
LN
or V
LL
should be selected for displaying the frequency value.
Digital Inputs
EPM-07/07S has 2 digital inputs. Digital inputs have 2 functions:
- When a remote device has activated, situation of this device which is conncected to the digital input, can be monitored according to data register
(Battery, thermostat, circuit breaker and motor position).
- When the digital inputs have activated in Energy Count menu, device will control the Energy Counters (Example: It is used for measuring of energy separately at the using of network and generator).
Energy Pulse Outputs
EPM-07/07S has 2 Energy Pulse Outputs. These outputs give the pulses only for E-1 (Energy Counter).
Pul1 and Pul2: In o-1 (Pulse1), o-2 (Pulse2) menus which are in the pulse menu, device give pulse according to selected energy parameters as [Active energy (ACt, A-I, A-E), Reactive energy (rEA, r-L, r-C)].
Please refer to the pulse menu for the coefficients of energies.
Monitoring Min.- Max. and Max. Demand Values:
Min. and Max. values are defined for V
LN
, V
LL
, A, W, VAr, VA, SW, SVAr, SVA.
Demand values are defined for A, W, VAr, VA, SW, SVA, SVAr.
If measured instant value is smaller than min. value which was stored before, it is stored as new min. value. If measured instant value is greater than max.
value which was stored before, it is stored as new max. value.
Demand value is the average value of the measured values in demand time
(15 minutes).
If one of defined parameters is displayed (ie. W) when demand button is pressed min., max or max. demand values are displayed. When an undefined parameter is displayed (ie. Cosj) if demand button is pressed, instant value is continued to display.
H-L-M LEDs
H-L-M LEDs are dedicated to displaying the min., max. and max. demand values according to selected parameters.
H: Maximum Value, L: Minimum Value, M: Max. Demand Value
ESC button
Max. LED
SET button
Minimum LED
Demand LED
Calculation Methods for Active / Reactive Power Values
If the LED on the most right side blinks it represents that active powers / reactive powers direction is negative.
There are two methods for calculating total active and total reactive powers :
1) Active / Reactive power can be calculated by summing import and export values and displaying as a single value.
2) Active / Reactive power can be calculated according to direction as import / export.
Note :
1) The dot at the most right digit of the fourth display (During SW is displayed) represents that displayed value is export active power value.
Vice versa, displayed value is import active power value.
2) The dot at the most right digit of the fourth display (During SVAr is displayed) represents that displayed value is capacitive reactive power value. Vice versa, displayed value is inductive reactive power value.
3) The displayed parameter will not change if power is off after 30 seconds of stand-by (ie. W).
Measured Parameters:
V
LN
(Phase Voltage) Cosj
V
LL
(Phase to Phase Voltage) AI ( kWh) (Import Active Energy I)
A (Phase Current) AE (kWh) (Export Active Energy)
W (Active Power)
VAr (Reactive Power)
VA (Apparent Power) rI (kVArh) (Import Reactive Energy) rE(kVArh) (Export Reactive Energy)
Hz. (Frequency)
I
N
(Neutral Current)
SW (Total Active Power)
SVAr (Total Reactive Power)
SVA (Total Apparent Power)
FUNCTIONS OF BUTTONS
In the monitoring mode, it is used to pass between (V
LN
, V
LL
, A, W,
VAr, VA, Cosj, kWh, kVarh) parameters.
At the programming mode, it provides to increase value of desired parameter and pass to the next menu.
In the monitoring mode, it is used to pass between (VLN, VLL, A, W,
VAr, VA, Cosj, kWh, kVarh) parameters.
At the programming mode, it provides to decrease value of desired parameter and pass to the prevides menu.
It is used for passing between the instant values such as. When it is pressed for 3 second, programming mode is entered. In the programming mode it is used for saving parameters and moving the sub menu.
In displaying mode, it is used for; passing the instant values which are displayed for min., max. and demand values in displaying mode, turn back to the previous menu turn back to the previous digit, when changing the numerical values and quiting the programming mode without saving.
If user password is activated and set button is pressed for 3 seconds, a pin code is required in order to enter to the menu.
Current Transformer Ratio Setup
(This menu is not available in the devices which are adapted with CT-25.)
In this menu, current transformer ratio is set between 1 - 2000.
Note: If the current transformer is not used between the system and EPM-07/07S, current transformer ratio is entered as 1.
Example: If a current transformer which has a ratio of 250/5A is used between the system and EPM-07/07S; Current transformer ratio is entered as 50 (250/5).
Press SET button for 3 seconds (trA Fo menu is displayed)
Press SET button; trA Fo Ctr menu is displayed (In CT-25 adapted devices, trA Fo trn is displayed instead.)
(Note: trA Fo Utr menu can be displayed by scrolling the UP/DOWN buttons.)
Press SET button. Blinking the first digit of displayed value appears. (trA Fo
Utr 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, 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).
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 option by using
UP-DOWN buttons, new data will be cancelled and previous value will be activated.
1
MULTIMETER
EPM-07 / EPM-07S
Programming the Turn Number:
This menu is available for CT-25 adapted devices. User enter 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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
2.00
1.00
0.66
0.50
0.40
0.33
0.28
0.24
0.22
0.20
0.18
0.16
0.15
0.14
0.13
0.12
0.11
0.11
0.10
0.10
120 60.0
40.0
30.0
24.0
20.0
17.1
15.0
13.3
12.0
10.9
10.0
9.23
8.57
8.00
7.50
7.05
6.66
6.31
6.00
Voltage Transformer Ratio Setup
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-07/07S, 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 EPM-07/07S; Voltage transformer ratio is entered as 345. (34500/100)
Reactive Energy Calculation Method Setting
Three different methods exist for reactive energy calculation in EPM-07/07S. Brief informations about these methods are explained in below table.
Related values which must be entered in the menu are also indicated in the table in order to select reactive power calculation method for mechanical and digital energymeters.
Mechanical Energymeter
(Vectoral summation of 3-phase)
Digital Energymeter
(Each phase seperately)
Reactive Energy
(Q)
0 1
Description
90° rotation of voltage vector and multiply with current
It is the most preferred reactive power calculation methode.
4
2
5
3
¥
S V n
.I
n
.sin(j n
) n=1 to 19 th harmonics. This calculation methode is mostly preferred for network analysers.
S 2 -P 2
Power Triangle Methode : According to this methode;
Q = S 2 -P 2
(Q : Reactive power, S : Apparent power, P : Active power)
Press SET button for 3 seconds (trA Fo menu is displayed)
Press SET button (trA Fo Ctr menu is displayed)
By using UP-DOWN buttons, find CAL CLt menu.
Press SET button.
By using UP-DOWN buttons, select energy calculation method.
Press SET button.
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 option by using UP-DOWN buttons, new data will be cancelled and previous value will be activated.
Demand Time Setup:
In this menu,demand time is s e t b e t w e e n 1 - 6 0 m i n u t e s .
Press SET button for 3 seconds (trA Fo menu is displayed)
By using UP-DOWN buttons find dE tý menu.
Press SET button (First digit blinks.)
By using UP-DOWN buttons, enter the value to the first digit.
Press SET button (Second digit blinks)
2
By using UP-DOWN buttons, enter the value to the second digit.
Press SET button, dE tý 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 option by using
UP-DOWN buttons, new data will be cancelled and previous value will be activated.
Monitoring and Erasing of minimum, maximum and energy values:
In this menu, values of min.,max. or energy counters are erased.
It saves the instantaneously measured min. and max. values of
EPM-07/07S into its memory. Please kindly look at to the section of FUNCTIONS OF BUTTONS for min. and max. values.
Note : Measured electrical parameters which are saved to the memory are not affected from the electric interruptions.
In the rESEt menu; when you quit from all menus, if you confirm the changes,min. and max. values of all parameters or energy counter values are erased at the same time.
For erasing the values of min. and max. or energy counter,
In the measurement mode :
Press SET button for 3 seconds (trA Fo menu is displayed)
By using UP-DOWN buttons, find rES Et menu.
Press SET button.
(rESEt HL menu is displayed)
By using UP-DOWN buttons, select which parameter you want to reset.
Press SET button
By using UP-DOWN buttons, if you want to delete the parameter select
yES option otherwise select no option.
Press SET button. (rES Et is displayed)
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 option by using UP-DOWN buttons, new data will be cancelled and previous value will be activated.
MULTIMETER
EPM-07 / EPM-07S
PK 26 Box Connection Diagram
Max: 30 VDC
+
_
(12-48V DC)
- + - +
Gnd A B
RS-485
TR
Auxiliary
Supply
Voltage Measuring Input Current Measuring Input
L1 L2 L3 N
I
L1
I
L2
I
L3
1A
L1
L2
L3
N
3 Phase neutral k
K l
L k
K l
L k
K l
L
Max: 30 VDC
L1
L2
L3
1A
(12-48V DC)
- + - +
Gnd A B
RS-485
TR
Auxiliary
Supply
Voltage Measuring Input Current Measuring Input
L1 L2 L3 N
I
L1
I
L2
I
L3
N k
K l
L k
K l
L k
K L l
3 Phase without neutral
*Available only for EPM-07S
Note: For CT-25 models: 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.
7
+
_
Max: 30 VDC
(12-48V DC)
- + - +
Gnd A B
RS-485
TR
Auxiliary
Supply
Voltage Measuring Input Current Measuring Input
L1 L2 L3 N
I
L1
I
L2
I
L3
1A
N
L1
L2
L3 k
K
3 Phase without neutral current input with
Aron wiring configuration l
L k
K l
L
Max: 30 VDC
(12-48V DC)
- + - +
Gnd A B
RS-485
TR
Auxiliary
Supply
Voltage Measuring Input Current Measuring Input
L1 L2 L3 N
I
L1
I
L2
I
L3
N
1A
L1
L2 k
K
L3
3 Phase without neutral current input with
Aron wiring configuration
L l k
K L l
MULTIMETER
EPM-07 / EPM-07S
PR 19 Box Connection Diagram
L1
L2
L3
N
3 Phase neutral k
K L l k
K L l k
K
Max: 30 VDC
_
+
1
I
L1
2 3 4 5
I
L2
Current Measuring Input
I
L3
6
7
L1
Pul C
( 12-48V DC )
InC In1 In2
13 14 15 16 17 18
RS485
19 20 21 22
GND B A TR
Pul 1 Pul 2
Voltage Measuring Input
L2
8
L3
9
N
10
Auxiliary
Supply
11 12
L l
L1
N
6
L1
L2
L3 k
K L l k
K L l
Max: 30 VDC
_
+
1
I
L1
2 3 4 5
I
L2
Current Measuring Input
I
L3
6
Pul C
( 12-48V DC )
InC In1 In2
13 14 15 16 17 18
RS485
19 20 21 22
GND B A TR
Pul 1 Pul 2
7
L1
Voltage Measuring Input
L2
8
L3
9
N
10
Auxiliary
Supply
11 12
3 Phase without neutral current input with
Aron wiring configuration
L1
N
L1
L2
L3 k
K L l k
K L l k
K
Max: 30 VDC
_
+
1
I
L1
2 3 4 5
I
L2
Current Measuring Input
I
L3
6
7
L1
Pul C
( 12-48V DC )
InC In1 In2
13 14 15 16 17 18
Pul 1 Pul 2
RS485
19 20 21 22
GND B A TR
Voltage Measuring Input
L2
8
L3
9
N
10
Auxiliary
Supply
11 12
L l
3 Phase without neutral
*Available only for EPM-07S
Note: For CT-25 models: 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.
L1
N
L1
L2
L3 k
K L l k
K L l
Max: 30 VDC
_
+
1
I
L1
2 3 4 5
I
L2
Current Measuring Input
I
L3
6
L1
7
Pul C
( 12-48V DC )
InC In1 In2
13 14 15 16 17 18
RS485
19 20 21 22
GND B A TR
Pul 1 Pul 2
Voltage Measuring Input
L2
8
L3
9
N
10
Auxiliary
Supply
11 12
L1
N
3 Phase without neutral current input with
Aron wiring configuration
MULTIMETER
EPM-07 / EPM-07S
Pulse Menu
In this menu, three parameters can be selected : PUL SE rAt
ýo, PUL SE o-1, PUL SE o-2
PUL SE rAt ýo : Pulse ratio can be set as :
1, 10, 100 (wh/VArh); 1, 10, 100 (kwh/kVArh);
1 Mwh/MVArh.
PUL SE o-1 : If this parameter is selected, in every increase in output 1, one pulse is counted. Output 1 parameter can be set as :
ACt (Export/Import), A-I (Active Import), A-E (Active Export), rEA (Inductive
/ Capacitive), r-L (Reactive Inductive), r-C (Reactive Capacitive).
PUL SE o-2 : If this parameter is selected, in every increase in output 2, one pulse is counted. Output 2 parameter can be set as :
ACt (Export/Import), A-I (Active Import), A-E (Active Export), rEA (Inductive
/ Capacitive), r-L (Reactive Inductive), r-C (Reactive Capacitive).
Press SET button for 3 seconds (trA Fo menu is displayed)
By using UP-DOWN buttons, find PULSE menu.
Press SET button (PUL SE rAt ýo menu is displayed)
By using UP-DOWN buttons, select PUL SE rAt ýo, PUL SE o-1 or PUL SE o-2.
Press SET button.
By using UP-DOWN buttons, select required parameter.
Press SET button.
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 option by using UP-DOWN buttons, new data will be cancelled and previous value will be activated.
Energy Counter (Eng Cnt) Menu
EPM-07/07S has 2 energy counters :
Energy counter 1 (E-1), Energy counter 2 (E-2).
E-1 / E-2 have 4 parameters : on : Activate E-1 / E-2 counters for energy counting without depending on any parameter.
ý-1 : Activate E-1 / E-2 counters, when digital input 1 is on (=1).
ý-2 : Activate E-1 / E-2 counters, when digital input 2 is on (=1).
E-2: E-1 does not count when E-2 is activated. (Only for E-1)
E-1: E-2 does not count when E-1 is activated. (Only for E-2)
Note: Counting status is undefined if E-2 is selected on E-1 and if E-1 is selected on E-2. When the status is defined as above, both energy counters count while digital input is not on (=1), but if either one or both digital inputs are on (=1) then counters will not count.
Press SET button for 3 seconds (trA Fo menu is displayed)
By using UP-DOWN buttons, find Eng Cnt menu.
Press SET button (Eng Cnt E-1 menu is displayed)
By using UP-DOWN buttons, select E-1 or E-2.
Press SET button.
By using UP-DOWN buttons, select
on, ý-1, ý-2 or E-1 / E-2.
Press SET button.
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 option by using UP-DOWN buttons, new data will be cancelled and previous value will be activated.
3
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 menus under the Pýn menu.
Changing of User Password:
This menu is used to change the user password .
Note: Factory default value for user password is
0000
To change the user password,
In the monitoring mode :
Press SET button for 3 seconds (trA Fo menu is displayed)
Bu using UP-DOWN buttons, find Pýn menu.
Press SET button (Pýn ACt IUA tE menu is displayed)
By using the UP-DOWN buttons, find Pýn CHA ngE menu.
By using UP-DOWN-SET buttons, enter the old password
By using UP-DOWN-SET buttons, enter the new password
By using UP-DOWN-SET buttons, re-enter the new password.
Press SET button, Pýn CHA ngE 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 option by using UP-DOWN buttons, new data will be cancelled and previous value will be activated.
Activating the user password:
This menu is used for activating the user password.
After the user password is activated, while the instant values are observed,user password is required in order to enter to the menu. If the wrong user password is entered, user can not enter to the menu.
Note: Factory default value of user password is 0000
Press SET button for 3 seconds (trA Fo menu is displayed)
Bu using UP-DOWN buttons, find Pýn menu.
Press SET button
(Pýn ACt IUA tE menu is displayed)
Press SET button. First digit of the displayed value is blinking.
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).
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 option by using UP-DOWN buttons, new data will be cancelled and previous value will be activated.
MULTIMETER
EPM-07 / EPM-07S
Serial Communication (Available only for EPM-07S)
EPM-07S has MODBUS RTU communication protocol which is optically isolated. All measured parameters can be transferred to the computer.Transformer ratios and communication parameters can be set. Saved demand and energy values can be reset.
Parameter Settings
Address Parameters : Value can be enter between 001-247.
Baud Rate Parameters : Value can be selected as 2400, 4800, 9600,
19200 and 38400 bps.
Parity Parameters : no, odd and EUEn can be selected.
Press SET button for 3 seconds (trA Fo menu is displayed)
Bu using UP-DOWN buttons, find RS-485 menu.
Press SET button (Adr ESS menu is displayed)
Find the menu which is programmed in Adr ESS / bAU d / PArýty menus by scrolling UP-DOWN buttons.
Press SET button (001 / 9600 / no is displayed.)
Enter the value of related parameters 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 option by using UP-DOWN buttons, new data will be cancelled and previous value will be activated.
MODBUS RTU PROTOCOL (Available only for EPM-07S)
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:
03H READ HOLD REGISTERS
06H PRESET SINGLE REGISTER
10H PRESET MULTIPLE REGISTERS
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 Single Register (06) function is used for writting the setting values, erasing the energy counter or resetting the min., max., demand values.
Current transformers ratio can be set 0-2000, voltage transformer ratio can be set 1-40000. Min., Max. and Demand values can be only clear. If sent value is outside of this range device responds with an error message.
Example. 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
Preset Multiple Register(10H) is used to set more then one register at same time.
Example. 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
Digital Inputs (Available only for EPM-07S)
Digital input are sent in 16 bit hexadecimal format as below:
55H 15
U U U U U U
MSB
(Most Significant Byte)
U: undefined
U U U U U U U U
LSB
(Least Significant Byte)
1
DIN2 input 2
0
DIN1 input 1
If 12-48 V AC / DC is applied to ln1 (Input 1), 0 (zero) bit of DIN register is set as 1. Otherwise, 0 (zero) bit is set as 0.
If 12-48 V AC / DC is applied to ln2 (Input 2), 1st bit of DIN register is set as 1. Otherwise, 1st bit is set as 0.
The Parameters are sent in 32bit Hexadecimal format. For Example,
230.0V voltage will be sent as 000008FCH. Cosj values shall be divided to 1000.
0.980 Cosj will be sent as 000003D4H. Energy values are sent in 64 bytes.
1234567890123456789 Wh = AB 54 A9 8C EB 1F 0A D2 Wh
Specifications for data cable ;
- 24 AWG or thicker
- Less than 100 ohm/ km
- Nominal characteristic impedance at 100 kHz of 100 ohms
- Less than 60 pF/m mutual capacitance (between two wires in a pair)
- Less than 120 pF/m mutual pair capacitance ( the capacitance between one wire and all others connected to earth).
- Twisted Pair
ERROR CODES (Available only for EPM-07S)
Slave device (EPM-07S) sends error message when receive any missing query.
Error codes are given below.
01 Invalid Function: If any message except given above is used, then 01 error messages will be sent.
02 Invalid Register: Error 02 will be send when a reading of a register is requested, except the registers which mentioned in table.
03 Invalid data: If any different value is been set for dedicated Transformer values and nonzero for demand value, then error message 03 will be sent.
4
MULTIMETER
EPM-07 / EPM-07S
EPM-07S COMPUTER CONNECTION
31 DEVICES CAN BE CONNECTED AT THE SAME LINE
MAX. 1200 mt.
RS485/RS232
CONVERTER
B
A
GND
TR B A GND TR B A GND TR B A GND ...
EPM-07S-31 EPM-07S-2 EPM-07S-1
M A X . 2 4 7 D E V I C E S C A N B E C O N N E C T E D AT S A M E L I N E B Y U S I N G R E P E AT E R .
MAX. 1200 mt.
MAX. 1200 mt.
PC
RS485/RS232
CONVERTER
B
A
GND
PC
TR B A GND ...
EPM-07S-247
Dimensions
10.8
30.1
7.6
9.5
REPEATER EPM-07S-31
...
EPM-07S-2 EPM-07S-1
79.3mm
70mm
60.6
26.5
21.5
53.0
58.0
10.0
106.0
Type PK 26
5
96mm
Type PR 19
Panel Cut-out
Wall
79.3mm
70mm
91mm
Type PR 19 (96x96)
50mm
Tip 19
