IOMOD 4Cs4Vs User Manual
Introduction
IOMod 4Cs4Vs is a compactsized standalone power meter for measuring analog AC input signals from lowpower current and voltage sensors. It measures three phases of AC voltages and currents with additional inputs for neutral/residual voltage and current. The measured and calculated values are transmitted to the host system via communication protocol IEC 608705103 or Modbus RTU.
Features
 4 AC current sensor inputs according to IEC 600448 (nominal value 225mV)
 4 AC voltage sensor inputs according to IEC 600447 (nominal value 3.25/ √3 V)
 Communication protocols : IEC 608705103 or Modbus RTU
 32 samples per cycle
 FFTbased calculation with harmonic information
 RS485 interface with a switchable terminating resistor
 Status and data transmission (Rx and Tx) indication.
 Configurable over USB
 DragandDrop firmware upgrade over USB
 A smallsized case with a removable front panel
 DIN rail mount
 Operating temperature: from 30 to +70°C
 Power Requirements: 1224 VDC
Common configuration information
 Nominal system frequency. In order to get correct threephase system measurements, a user must select nominal system frequency – either 50Hz or 60Hz.
 Process parameters. There user can set rated primary current and voltage values which are used for calculating measured data in primary values. Those values are available only via float registers in the Modbus RTU protocol.
 Configuration of sensors. The power meter is designed to work with standard lowpower current and voltage sensors with a nominal output value of 225mV for the current sensor and 3.25√3 V (1.876V) for the voltage sensor. If current sensors have some deviation from the nominal value, a user can define the exact sensor voltage. The new value will be set the same for all current sensors inputs. Each voltage sensor input has a separate correction parameter called the magnitude factor. This factor is used to multiply measured voltage. For example, if a sensor has a 5% lower output voltage, the user can set the magnitude to 1050. The actual factor will be 1.05 and the measured value will be multiplied by this factor. This factor can be used in cases when several measuring devices are connected to the same sensor in parallel. In this case, the parallel connection will reduce the internal resistance of the sensor and consequently output voltage. The magnitude factor can be used to compensate for this deviation.
 Communication protocol. Selection of IEC 608705103 or Modbus RTU communication protocol.
Connection diagram
Fig. 4.1. IOMOD 4CS4VS internal structure and connection diagram
Technical information
System  
1.  Dimension  101 x 119 x 17.5 mm 
2.  Case  ABS, black 
3.  Working environment  Indoor 
4.  Working temperature  30  +70 
5.  Recommended operating conditions  5 – 60°C and 20 – 80%RH; 
6.  Configuration 
USB – configuration terminal via com port 
7.  Firmware upgrade  USB – mass storage device 
Electrical specifications 

8.  Inputs 
16bit resolution, Input resistance: ~1 MOhm Input capacitance: ~170pF Input Ranges:

Power 

9.  Power Supply  9V to 33V 
10.  Current consumption  40mA @ 12VDC, 20mA @ 24VDC 
RS485 Interface
IOMod 4Cs4Vs has an integrated 120Ω termination resistor, which can be enabled or disabled via the configuration terminal. It is recommended to use termination at each end of the RS485 cable. See the typical connection diagram in Fig. 6.1.
Fig. 6.1. Typical IOMod connection diagram
IOMod 4Cs4Vs has a 1/8 Unit load receiver which allows having up to 255 units on a single line (compared to standard 32 units). To reduce reflections keep the stubs (cable distance from the main RS485 bus line) as short as possible.
Configuration over USB
Driver installation
The device requires USB drivers to work as a Virtual COM port. The firsttime connection between the device and the computer could result in a “Device driver software was not successfully installed” error (as in Fig. 7.1).
Fig. 7.1. Unsuccessful device software installation error
A user then should manually install drivers by selecting a downloaded driver folder:
 Go to Control Panel > Device Manager;
 Select a failing device;
 Press “Update driver software”; the screen as in Fig. 7.2. should appear:
Fig. 7.2. Device driver software update message
● Select “x86” driver for a 32bit machine or x64 for a 64bit machine. If not sure, select a root folder (folder in which x64 and x86 lay inside, as in Fig. 7.3).
Fig. 7.3. Device driver folder content
IOMod configuration via PuTTY terminal
A configuration of the IOMod device is done through CLI (Command Line Interface) on the virtual COM port. Drivers needed for Microsoft Windows to install VCOM will be provided. To open up CLI simply connect to a specific VCOM port with terminal software (advised to use PuTTY terminal software. If other software is being used, a user might need to send <return> symbol after each command). When connected user should immediately see the main screen (Fig. 7.4).
Fig. 7.4. The main menu
It is highly advised to exit the main screen before disconnecting the device
If the terminal window is closed accidentally, a user can connect the terminal program again, and press any key on a keyboard to show the main menu again.
Configuration terminal menu
Menu Name  Submenu  Values  Default Values  
[S]  Process parameters 
[1] Set rated primary voltage [2] Set rated primary current 
1 – 65000 V 1 – 65000 A 
1 V 1 A 
[P]  Communication protocol 
[1] IEC103 [2] Modbus RTU 
  
Modbus RTU 
[1]  Link or device Address 
Set link or device address 
1254 
1 
[2]  Baud rate, Parity and Stop bits 
[1] Set 8 Data bits + 1 Stop bit [2] Set 8 Data bits + 2 Stop bit [3] Configure baud rate [4] Configure Parity 
  100256000 None/ Odd / Even / Mark/ Space 
1 Stop bit 9600 Even 
[3]  RS485 Terminating Resistor 
[1] Enable [2] Disable 
  
Disabled 
[4]  Configure sensors 
[1] – magnitude factor of voltage sensor 1 [2] – magnitude factor of voltage sensor 2 [3] – magnitude factor of voltage sensor 3 [4] – magnitude factor of voltage sensor 4 [5] – current sensor nominal value 
100  3000 100  3000 100  3000 100  3000 100 – 3000 mV 
1000 1000 1000 1000 225 mV 
[5] 
Select measurand set and scale factor* *(this menu is visible only when the IEC103 protocol is activated) 
[1] Measurand set 1 [2] Measurand set 2 [3] Measurand set 3 [4] Measurand set 4 [5] Scale factor 1.2 [6] Scale factor 2.4 [7] Function type 
      1  255 
Measurand set 4 Scale factor 1.2 253 
[6]  Set nominal system frequency 
[1] – 50 Hz [2] – 60 Hz 
  
50 Hz 
[7]  Set Default Settings 
[1]  confirm [0]  cancel 
  
 
[8]  Firmware Upgrade 
[1]  confirm [0]  cancel 
  
 
[9]  Diagnostics 
Raw input values 
 
 
[0]  Exit 
Exit and disconnect 
 
 
IEC 608705103 operational information
When the IEC608705103 protocol is selected IOMod uses a standard communication scheme. Initiation, control messages, and queries are initiated by a master (controlling station), while the IOMod device (controlled station) only answers requests and sends values. The first message sent by the master should be RESET CU to restart communication. When acknowledge (ACK) packet is sent from a slave device, a master may proceed with acquiring General Interrogation and sending Time synchronization packets.
When this initialization is complete, the master should poll the IOMod device with Class 1 and Class 2 requests. Class 2 is used when the master polls for cyclic data. The controlled device responds when spontaneous data exists and the master then sends a request for Class 1. The controlled station responds with a timetagged message.
As IOMod 4Cs4Vs doesn’t have any digital inputs, only analog ones, therefore the general interrogation returns nothing. Values of measurements are returned cyclically as a response to Class 2 data request
Specific settings for the IEC 608705103 protocol:
 Measurand set selection. A user can select which predefined measurand set will be transmitted to the host system. Available measurand sets are presented in table 8.1.
 Scale factor. The communication protocol IEC 608705103 only lets 13bit signed values in the range of 1...+1. When an IEC 608705103 measurand, for example, phase voltage, is scaled as 2.4, it means that the measurand value 1 corresponds to 2.4×Un, measurand value 0.5 corresponds to 1.2×In, and so on. If the measurand value, in this case, exceeds 2.4×Un, the IEC 608705103 object value saturates at its maximum value and an overflow flag is set in the IEC 608705103 object transmission
 Device function type. By default, IOMod has IEC 608705103 Function Type set to 253. If this Function type for some reason is not suitable – a user can define any other type
Table 8.1. Measurand sets
Set Nr. 
ASDU 
FUN* 
INF 
Qty of data 
Information elements (measurands) 
1 
9 
253 
148 
9 
I1, I2, I3, U1, U2, U3, P, Q, f 
2 
9 
253 
149 
23 
I1, I2, I3, I4, U1, U2, U3, U4, P1, P2, P3, Q1, Q2, Q3, S1, S2, S3, PF1, PF2, PF3, U12ph, U23ph, U13ph 
3 
9 
253 
150 
60 
I1, I2, I3, IN, U1, U2, U3, UN, P1, P2, P3, Q1, Q2, Q3, S1, S2, S3, PF1, PF2, PF3, U12, U23, U13, f, THDU1, THDU2, THDU3, THDI1, THDI2, THDI3, I1_H2, I1_H3, I1_H5, I1_H7, I1_H9, I2_H2, I2_H3, I2_H5, I2_H7, I2_H9, I3_H2, I3_H3, I3_H5, I3_H7, I3_H9, U1_H2, U1_H3, U1_H5, U1_H7, U1_H9, U2_H2, U2_H3, U2_H5, U2_H7, U2_H9, U3_H2, U3_H3, U3_H5, U3_H7, U3_H9 
4 
9 
253 
151 
54 
I1, I2, I3, IN, U12, U23, U13, UN, S, P, Q, PF, THDU1, THDU2, THDU3, THDI1, THDI2, THDI3, I1_H3, I1_H5, I1_H7, I1_H9, I2_H3, I2_H5, I2_H7, I2_H9, I3_H3, I3_H5, I3_H7, I3_H9, U1_H3, U1_H5, U1_H7, U1_H9, U2_H3, U2_H5, U2_H7, U2_H9, U3_H3, U3_H5, U3_H7, U3_H9, P1, P2, P3, Q1, Q2, Q3, U1ph, U2ph, U3ph, U1, U2, U3 
No.  Designation  Measured quantity 
1 
I1 
Phase L1 current with standard scaling (1.2 or 2.4) 
2 
I2 
Phase L2 current with standard scaling (1.2 or 2.4) 
3 
I3 
Phase L3 current with standard scaling (1.2 or 2.4) 
4 
I4 
IN channel current with standard scaling (1.2 or 2.4) 
5 
U1 
Phase L1 voltage with standard scaling (1.2 or 2.4) 
6 
U2 
Phase L2 voltage with standard scaling (1.2 or 2.4) 
7 
U3 
Phase L3 voltage with standard scaling (1.2 or 2.4) 
8 
U4 
UN channel voltage with standard scaling (1.2 or 2.4) 
9 
P1 
Phase L1 real power with standard scaling (1.2 or 2.4) 
10 
P2 
Phase L2 real power with standard scaling (1.2 or 2.4) 
11 
P3 
Phase L3 real power with standard scaling (1.2 or 2.4) 
12 
P 
Total 3 phase real power (P1+P2+P3) with standard scaling (1.2 or 2.4) divided by 3 
13 
Q1 
Phase L1 reactive power with standard scaling (1.2 or 2.4) 
14 
Q2 
Phase L2 reactive power with standard scaling (1.2 or 2.4) 
15 
Q3 
Phase L3 reactive power with standard scaling (1.2 or 2.4) 
16 
Q 
Total 3 phase reactive power (Q1+Q2+Q3) with standard scaling (1.2 or 2.4) divided by 3 
17 
S1 
Phase L1 apparent power with standard scaling (1.2 or 2.4) 
18 
S2 
Phase L2 apparent power with standard scaling (1.2 or 2.4) 
19 
S3 
Phase L3 apparent power with standard scaling (1.2 or 2.4) 
20 
S 
Total 3 phase apparent power (S1+S2+S3) with standard scaling (1.2 or 2.4) divided by 3 
21 
PF1 
Phase L1 power factor with standard scaling (1.2 or 2.4) 
22 
PF2 
Phase L2 power factor with standard scaling (1.2 or 2.4) 
23 
PF3 
Phase L3 power factor with standard scaling (1.2 or 2.4) 
24 
PF 
Total 3phase power factor with standard scaling (1.2 or 2.4) 
25 
U12ph 
Phase angle between U1 and U2 without scaling in 0.1deg 
26 
U23ph 
Phase angle between U2 and U3 without scaling in 0.1deg 
27 
U13ph 
Phase angle between U1 and U3 without scaling in 0.1deg 
28 
f 
Phase L1 voltage frequency with fixed scaling 50 
29 
IN 
Calculated neutral current with standard scaling (1.2 or 2.4) 
30 
UN 
Calculated neutral voltage with standard scaling (1.2 or 2.4) 
31 
U12 
Calculated phasetophase voltage with standard scaling (1.2 or 2.4) divided by SQRT(3) 
32 
U23 
Calculated phasetophase voltage with standard scaling (1.2 or 2.4) divided by SQRT(3) 
33 
U13 
Calculated phasetophase voltage with standard scaling (1.2 or 2.4) divided by SQRT(3) 
34 
THDU1 
Total harmonic distortions of U1 voltage in 0.1% 
35 
THDU2 
Total harmonic distortions of U2 voltage in 0.1% 
36 
THDU3 
Total harmonic distortions of U3 voltage in 0.1% 
37 
THDI1 
Total harmonic distortions of I1 current in 0.1% 
38 
THDI2 
Total harmonic distortions of I2 current in 0.1% 
39 
THDI3 
Total harmonic distortions of I3 current in 0.1% 
40 
I1_H2 
2^{nd} harmonic level of I1 current in 0.1% 
41 
I1_H3 
3^{rd} harmonic level of I1 current in 0.1% 
42 
I1_H5 
5^{th} harmonic level of I1 current in 0.1% 
43 
I1_H7 
7^{th} harmonic level of I1 current in 0.1% 
44 
I1_H9 
9^{th} harmonic level of I1 current in 0.1% 
45 
I2_H2 
2^{nd} harmonic level of I2 current in 0.1% 
46 
I2_H3 
3^{rd} harmonic level of I2 current in 0.1% 
47 
I2_H5 
5^{th} harmonic level of I2 current in 0.1% 
48 
I2_H7 
7^{th} harmonic level of I2 current in 0.1% 
48 
I2_H9 
9^{th} harmonic level of I2 current in 0.1% 
49 
I3_H2 
2^{nd} harmonic level of I3 current in 0.1% 
50 
I3_H3 
3^{rd} harmonic level of I3 current in 0.1% 
51 
I3_H5 
5^{th} harmonic level of I3 current in 0.1% 
52 
I3_H7 
7^{th} harmonic level of I3 current in 0.1% 
53 
I3_H9 
9^{th} harmonic level of I3 current in 0.1% 
54 
U1_H2 
2^{nd} harmonic level of U1 voltage in 0.1% 
55 
U1_H3 
3^{rd} harmonic level of U1 voltage in 0.1% 
56 
U1_H5 
5^{th} harmonic level of U1 voltage in 0.1% 
57 
U1_H7 
7^{th} harmonic level of U1 voltage in 0.1% 
58 
U1_H9 
9^{th} harmonic level of U1 voltage in 0.1% 
59 
U2_H2 
2^{nd} harmonic level of U2 voltage in 0.1% 
60 
U2_H3 
3^{rd} harmonic level of U2 voltage in 0.1% 
61 
U2_H5 
5^{th} harmonic level of U2 voltage in 0.1% 
62 
U2_H7 
7^{th} harmonic level of U2 voltage in 0.1% 
63 
U2_H9 
9^{th} harmonic level of U2 voltage in 0.1% 
64 
U3_H2 
2^{nd} harmonic level of U3 voltage in 0.1% 
65 
U3_H3 
3^{rd} harmonic level of U3 voltage in 0.1% 
66 
U3_H5 
5^{th} harmonic level of U3 voltage in 0.1% 
67 
U3_H7 
7^{th} harmonic level of U3 voltage in 0.1% 
68 
U3_H9 
9^{th} harmonic level of U3 voltage in 0.1% 
69 
U1ph 
Phase angle of U1 without scaling in 0.1deg 
70 
U2ph 
Phase angle of U2 without scaling in 0.1deg 
71 
U3ph 
Phase angle of U3 without scaling in 0.1deg 
Modbus RTU operational information
When Modbus RTU protocol is selected IOMod acts as a slave device and waits for requests from the Modbus master. For measurement, the reading master can send a Read Holding Register request (FC 03) or a Read Input Register (FC 04). Both requests give the same value which depends on the register number only.
In order to change internal settings, the Modbus master can send a Write Single Register (FC 06) request. Request with an unsupported function code or register number out of range will be answered with the corresponding exception. Measurement results in nominal values have integer type, while results in primary values are 32bit float type.
Table 9.1. List of registers with measurement results in nominal values.
Address (Dec) 
Designation 
Parameter 
Multiplier 
Read/ Write 
Unit 
0 
I1 
Phase L1 current 
Data * 100 
R 
% 
1 
I2 
Phase L2 current 
Data * 100 
R 
% 
2 
I3 
Phase L3 current 
Data * 100 
R 
% 
3 
I0 
Calculated neutral current 
Data * 100 
R 
% 
4 
U12 
Calculated phase to phase voltage L1 – L2 
Data * 100 
R 
% 
5 
U23 
Calculated phase to phase voltage L2 – L3 
Data * 100 
R 
% 
6 
U13 
Calculated phase to phase voltage L1 – L3 
Data * 100 
R 
% 
7 
U0 
Calculated zero sequence voltage 
Data * 100 
R 
% 
8 
S 
Total 3 phase apparent power (S1+S2+S3) 
Data * 100 
R 
% 
9 
P 
Total 3 phase active power (P1+P2+P3) 
Data * 100 
R 
% 
10 
Q 
Total 3 phase reactive power (Q1+Q2+Q3) 
Data * 100 
R 
% 
11 
PF 
Total 3 phase power factor 
Data * 100 
R 
% 
12 
THDU1 
Total harmonic distortions of U1 voltage 
Data * 100 
R 
% 
13 
THDU2 
Total harmonic distortions of U2 voltage 
Data * 100 
R 
% 
14 
THDU3 
Total harmonic distortions of U3 voltage 
Data * 100 
R 
% 
15 
THDI1 
Total harmonic distortions of I1 current 
Data * 100 
R 
% 
16 
THDI2 
Total harmonic distortions of I2 current 
Data * 100 
R 
% 
17 
THDI3 
Total harmonic distortions of I3 current 
Data * 100 
R 
% 
18 
I1_H3 
3^{nd} harmonic level of I1 current 
Data * 100 
R 
% 
19 
I1_H5 
5^{nd} harmonic level of I1 current 
Data * 100 
R 
% 
20 
I1_H7 
7^{nd} harmonic level of I1 current 
Data * 100 
R 
% 
21 
I1_H9 
9^{nd} harmonic level of I1 current 
Data * 100 
R 
% 
22 
I2_H3 
3^{nd} harmonic level of I2 current 
Data * 100 
R 
% 
23 
I2_H5 
5^{nd} harmonic level of I2 current 
Data * 100 
R 
% 
24 
I2_H7 
7^{nd} harmonic level of I2 current 
Data * 100 
R 
% 
25 
I2_H9 
9^{nd} harmonic level of I2 current 
Data * 100 
R 
% 
26 
I3_H3 
3^{nd} harmonic level of I3 current 
Data * 100 
R 
% 
27 
I3_H5 
5^{nd} harmonic level of I3 current 
Data * 100 
R 
% 
28 
I3_H7 
7^{nd} harmonic level of I3 current 
Data * 100 
R 
% 
29 
I3_H9 
9^{nd} harmonic level of I3 current 
Data * 100 
R 
% 
30 
U1_H3 
3^{nd} harmonic level of U1 voltage 
Data * 100 
R 
% 
31 
U1_H5 
5^{nd} harmonic level of U1 voltage 
Data * 100 
R 
% 
32 
U1_H7 
7^{nd} harmonic level of U1 voltage 
Data * 100 
R 
% 
33 
U1_H9 
9^{nd} harmonic level of U1 voltage 
Data * 100 
R 
% 
34 
U2_H3 
3^{nd} harmonic level of U2 voltage 
Data * 100 
R 
% 
35 
U2_H5 
5^{nd} harmonic level of U2 voltage 
Data * 100 
R 
% 
36 
U2_H7 
7^{nd} harmonic level of U2 voltage 
Data * 100 
R 
% 
37 
U2_H9 
9^{nd} harmonic level of U2 voltage 
Data * 100 
R 
% 
38 
U3_H3 
3^{nd} harmonic level of U3 voltage 
Data * 100 
R 
% 
39 
U3_H5 
5^{nd} harmonic level of U3 voltage 
Data * 100 
R 
% 
40 
U3_H7 
7^{nd} harmonic level of U3 voltage 
Data * 100 
R 
% 
41 
U3_H9 
9^{nd} harmonic level of U3 voltage 
Data * 100 
R 
% 
42 
P1 
Phase L1 active power 
Data * 100 
R 
% 
43 
P2 
Phase L2 active power 
Data * 100 
R 
% 
44 
P3 
Phase L3 active power 
Data * 100 
R 
% 
45 
Q1 
Phase L1 reactive power 
Data * 100 
R 
% 
46 
Q2 
Phase L2 reactive power 
Data * 100 
R 
% 
47 
Q3 
Phase L3 reactive power 
Data * 100 
R 
% 
48 
U1ph 
Phase angle of U1 voltage 
Data * 100 
R 
deg 
49 
U2ph 
Phase angle of U2 voltage 
Data * 100 
R 
deg 
50 
U3ph 
Phase angle of U3 voltage 
Data * 100 
R 
deg 
51 
U1 
Phase L1 voltage 
Data * 100 
R 
% 
52 
U2 
Phase L2 voltage 
Data * 100 
R 
% 
53 
U3 
Phase L3 voltage 
Data * 100 
R 
% 
54 
F 
Frequency of phase L1 voltage 
Data * 100 
R 
Hz 
55 
I4 
Input I4 current 
Data * 100 
R 
% 
56 
U4 
Input U4 voltage 
Data * 100 
R 
% 
Table 9.2. List of registers with internal settings values.
Address (Dec) 
Designation 
Parameter 
Multiplier 
Read/ Write 
Unit 
75 
PC 
Primary current value 
Data 
R/W 
A 
76 
PV 
Primary voltage value 
Data 
R/W 
V 
77 
VS1 
Amplitude correction factor U1 
Data 
R/W 
 
78 
VS2 
Amplitude correction factor U2 
Data 
R/W 
 
79 
VS3 
Amplitude correction factor U3 
Data 
R/W 
 
80 
VS4 
Amplitude correction factor U4 
Data 
R/W 
 
81 
CS1 
Current sensor nominal value 
Data 
R/W 
mV 
Table 9.3. List of float registers with measurement results in primary values.
Address (Dec) 
Designation 
Parameter 
Multiplier 
Read/ Write 
Unit 
100 
I1 
Phase L1 current 

R 
A 
102 
I2 
Phase L2 current 

R 
A 
104 
I3 
Phase L3 current 

R 
A 
106 
I0 
Calculated neutral current 

R 
A 
108 
U12 
Calculated phase to phase voltage L1 – L2 

R 
V 
110 
U23 
Calculated phase to phase voltage L2 – L3 

R 
V 
112 
U13 
Calculated phase to phase voltage L1 – L3 

R 
V 
114 
U1 
Phase L1 voltage 

R 
V 
116 
U2 
Phase L2 voltage 

R 
V 
118 
U3 
Phase L3 voltage 

R 
V 
120 
U0 
Calculated zero sequence voltage 

R 
V 
122 
U1ph 
Phase angle of U1 voltage 

R 
deg 
124 
U2ph 
Phase angle of U2 voltage 

R 
deg 
126 
U3ph 
Phase angle of U3 voltage 

R 
deg 
128 
S 
Total 3 phase apparent power 

R 
kVA 
130 
P 
Total 3 phase active power 

R 
kW 
132 
Q 
Total 3 phase reactive power 

R 
kVAr 
134 
PF 
Total 3 phase power factor 

R 
 
136 
S1 
Phase L1 apparent power 

R 
kVA 
138 
S2 
Phase L2 apparent power 

R 
kVA 
140 
S3 
Phase L3 apparent power 

R 
kVA 
142 
P1 
Phase L1 active power 

R 
kW 
144 
P2 
Phase L2 active power 

R 
kW 
146 
P3 
Phase L3 active power 

R 
kW 
148 
Q1 
Phase L1 reactive power 

R 
kVAr 
150 
Q2 
Phase L2 reactive power 

R 
kVAr 
152 
Q3 
Phase L3 reactive power 

R 
kVAr 
154 
PF1 
Phase L1 power factor 

R 
 
156 
PF2 
Phase L2 power factor 

R 
 
158 
PF3 
Phase L3 power factor 

R 
 
160 
F 
Frequency of phase L1 voltage 


Hz 
162 
THDU1 
Total harmonic distortions of U1 voltage 

R 
% 
164 
THDU2 
Total harmonic distortions of U2 voltage 

R 
% 
166 
THDU3 
Total harmonic distortions of U3 voltage 

R 
% 
168 
THDI1 
Total harmonic distortions of I1 current 

R 
% 
170 
THDI2 
Total harmonic distortions of I2 current 

R 
% 
172 
THDI3 
Total harmonic distortions of I3 current 

R 
% 
174 
I1_H3 
3^{nd} harmonic level of I1 current 

R 
% 
176 
I1_H5 
5^{nd} harmonic level of I1 current 

R 
% 
178 
I1_H7 
7^{nd} harmonic level of I1 current 

R 
% 
180 
I1_H9 
9^{nd} harmonic level of I1 current 

R 
% 
182 
I2_H3 
3^{nd} harmonic level of I2 current 

R 
% 
184 
I2_H5 
5^{nd} harmonic level of I2 current 

R 
% 
186 
I2_H7 
7^{nd} harmonic level of I2 current 

R 
% 
188 
I2_H9 
9^{nd} harmonic level of I2 current 

R 
% 
190 
I3_H3 
3^{nd} harmonic level of I3 current 

R 
% 
192 
I3_H5 
5^{nd} harmonic level of I3 current 

R 
% 
194 
I3_H7 
7^{nd} harmonic level of I3 current 

R 
% 
196 
I3_H9 
9^{nd} harmonic level of I3 current 

R 
% 
198 
U1_H3 
3^{nd} harmonic level of U1 voltage 

R 
% 
200 
U1_H5 
5^{nd} harmonic level of U1 voltage 

R 
% 
202 
U1_H7 
7^{nd} harmonic level of U1 voltage 

R 
% 
204 
U1_H9 
9^{nd} harmonic level of U1 voltage 

R 
% 
206 
U2_H3 
3^{nd} harmonic level of U2 voltage 

R 
% 
208 
U2_H5 
5^{nd} harmonic level of U2 voltage 

R 
% 
210 
U2_H7 
7^{nd} harmonic level of U2 voltage 

R 
% 
212 
U2_H9 
9^{nd} harmonic level of U2 voltage 

R 
% 
214 
U3_H3 
3^{nd} harmonic level of U3 voltage 

R 
% 
216 
U3_H5 
5^{nd} harmonic level of U3 voltage 

R 
% 
218 
U3_H7 
7^{nd} harmonic level of U3 voltage 

R 
% 
220 
U3_H9 
9^{nd} harmonic level of U3 voltage 

R 
% 
222 
I4 
Input I4 current 

R 
A 
224 
U4 
Input U4 voltage 

R 
V 
Firmware upgrade over USB
To update device firmware user must:
 Enter the main configuration menu;
 Enter the Firmware update screen by pressing [8];
 Confirm the update by pressing [1];
The device should now enter Firmware Upgrade mode.
It is recommended to close the terminal window after entering firmware upgrade mode
The device should then reconnect as a mass storage device (Fig. 10.1).
Fig. 10.1. Reconnecting as a mass storage device
Delete the existing file “firmware.bin” and simply upload a new firmware file by dragging and dropping as in Fig. 10.2.
Fig. 10.2 Mass storage device for firmware upload
Reconnect the device and check the firmware version. It should have changed.