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4�9�2� PROTOCOL

The Modbus protocol is an industry communication standard which enables networking of multiple

devices, with one master and several slaves. It allows individual master-slave dialogue and also enables

commands in broadcast format.

In the Modbus protocol, the

Computer SMART III

device uses the RTU (Remote Terminal Unit) mode.

In the RTU mode, the message start and end are detected with silences of at least 3.5 characters, and

the 16-bit CRC error-detection method is used.

The Modbus

functions implemented in the device are as follows:

Function 01

. Reading the status of the relays.

Functions 03 and 04

. Reading logs.

Function 05

. Writing a relay.

Function 0F

. Writing multiple relays.

Function 10

. Writing multiple logs.

Exception codes

If the bit with greatest weight of the byte corresponding to the function in the reply of the device is

1, this indicates that the next byte is an exception code.

Table 12: Exception codes, Modbus communications�

Exception code

Description

Incorrect function. The function number is not implemented.

Incorrect address or number of logs out of limits

Data error. A CRC error has occurred

Peripheral error. An error occurred when accessing a peripheral (EEPROM,

card, etc.)

Slave error or Slave busy. Retry sending.

Example:

Address

Function

Exception

code

CRC

XXXX

Address: 0A

, Peripheral number: 10 in decimal.

Function: 84

, Reading function 04 with bit no. 7 at 1.

Exception code: 01

, see

Table 10�

CRC:

16-bit CRC.

For reasons of operational security of the device, communication frames of more

than 80 bytes are not accepted (sent or received).

Computer SMART III

Instruction Manual

Содержание Computer SMART III 12

Страница 1: ...INSTRUCTION MANUAL M015B01 03 21A REACTIVE ENERGY REGULATOR Computer SMART III...

Страница 2: ...2 Computer SMART III Instruction Manual...

Страница 3: ...owing should be taken into consideration Incorrect handling or installation of the unit may result in injury to personnel as well as damage to the unit In particular handling with voltages applied may...

Страница 4: ...SMART III 12 MODEL 20 3 5 9 2 VOLTAGES AND 1 CURRENT COMPUTER SMART III 14 MODEL 21 3 5 10 LEAKAGE CURRENT CONNECTION I 22 3 6 STARTING UP THE DEVICE 23 4 OPERATION 24 4 1 DEFINITIONS 25 4 1 1 FOUR QU...

Страница 5: ...UE BAR 90 5 17 FAN 90 5 18 UNDERVOLTAGE TRIP 91 5 19 COMMUNICATIONS 93 5 20 CLEAR 94 5 21 ENABLING ALARMS 95 5 22 VOLTAGE ALARMS 96 5 23 COS LOW ALARM 97 5 24 COS HIGH ALARM 98 5 25 VOLTAGE THD ALARM...

Страница 6: ...ation in sections 2 4 4 4 5 4 9 3 5 14 05 20 M015B01 03 20B Modification in sections 4 9 3 5 17 01 21 M015B01 03 21A Modification in sections 4 6 1 4 9 3 5 3 5 13 5 23 5 24 Note Devices images are for...

Страница 7: ...es the power grid cosine and controls capacitor connection and disconnection in order to correct it It also calculates and displays the main electrical parameters of balanced or unbalanced single phas...

Страница 8: ...model or 14 output relays Computer SMART III 14 model for regulating the cos by means of capacitors RS 485 communications MODBUS RTU 8 Computer SMART III Instruction Manual...

Страница 9: ...nomaly or malfunction is detected in the device do not use it to take any measurements Inspect the work area before taking any measurements Do not take measurements in dangerous ar eas or where there...

Страница 10: ...n could lead to faulty operation and lead to a risk of electrical shock for the user or person handling the device Resonance can occur when the device is connected with no load In this case the voltag...

Страница 11: ...compensated as well as the current that is specific to the capacitors Figure 1 CORRECT INCORRECT P1 P2 S1 S2 TC LOAD CAPACITORS The current transformers CT must measure the combined current of the cap...

Страница 12: ...urrent input 32 1 Digital input 2 11 S1 L3 current input 33 C Common to the digital inputs 12 S2 L3 current input 34 1 Digital output 1 13 S1 Leakage current input 35 2 Digital output 2 14 S2 Leakage...

Страница 13: ...A B Power Supply COM 1 2 3 4 5 6 Relay Power Supply Figure 3 3 voltages neutral and 3 currents Computer SMART III 6 model Note If the connection layout mentioned above is not respected the phase must...

Страница 14: ...6 7 8 9 10 11 12 Relay For Computer SMART III 12 Power Supply Figure 4 3 voltages neutral and 3 currents Computer SMART III 12 model Note If the connection layout mentioned above is not respected the...

Страница 15: ...supply COM 1 2 3 4 5 6 7 8 9 10 11 12 Relay 13 14 COM Figure 5 3 voltages neutral and 3 currents Computer SMART III 14 model Note If the connection layout mentioned above is not respected the phase m...

Страница 16: ...s neutral and 1 current Computer SMART III 6 model Note If the connection layout mentioned above is not respected the phase must be adjusted follow ing the procedure described in section 5 6 PHASE CON...

Страница 17: ...ply Figure 7 3 voltages neutral and 1 current Computer SMART III 12 model Note If the connection layout mentioned above is not respected the phase must be adjusted following the procedure described in...

Страница 18: ...e 8 3 voltages neutral and 1 current Computer SMART III 14 model Note If the connection layout mentioned above is not respected the phase must be adjusted follow ing the procedure described in section...

Страница 19: ...ter SMART III 6 model Note If the connection layout mentioned above is not respected the phase must be adjusted following the procedure described in section 5 6 PHASE CONNECTION Note In this type of c...

Страница 20: ...s and 1 current Computer SMART III 12 model Note If the connection layout mentioned above is not respected the phase must be adjusted follow ing the procedure described in section 5 6 PHASE CONNECTION...

Страница 21: ...current Computer SMART III 14 model Note If the connection layout mentioned above is not respected the phase must be adjusted following the procedure described in section 5 6 PHASE CONNECTION Note In...

Страница 22: ...he capacitor bank TC LOAD CAPACITORS S1 S2 P1 P2 I S1 S1 S2 S2 IL1 IL2 IL3 Figure 12 Connection of the leakage current transformer I Note The earth leakage transformer must have a ratio of 500 turns T...

Страница 23: ...ered on the following screen appears on the display Figure 13 which shows the name of the device the version and the model Figure 13 Computer SMART III home screen After a few seconds the main measure...

Страница 24: ...Computer SMART III Performs the functions of a network analyzer measuring and viewing multiple parameters Has a Plug Play function for automatic configuration of the device Has an AutoTest and manual...

Страница 25: ...ected the longest is connected when there is demand and the stage that has been connected the longest is disconnected when there is a surplus 4 1 4 Regulation program The power ratings of the various...

Страница 26: ...mpact on the compensation speed in other words on the capacity for monitoring load changes Setting a shorter connection time improves the power factor correction when the load can change quickly Howev...

Страница 27: ...ent Power M kVA Total Reactive Power M kvar Inductive Reactive Power M kvarL Capacitive Reactive Power M kvarC Power factor PF Cos Voltage THD THD V Current THD THD A Harmonic Breakdown Voltage up to...

Страница 28: ...Inductive Reactive Power M kvarL Capacitive Reactive Power M kvarC Power factor PF Cos Voltage THD THD V Current THD THD A L1 Harmonic Breakdown Voltage up to the 17th harmonic harm V Harmonic Breakd...

Страница 29: ...ductive Reactive Power M kvarL Capacitive Reactive Power M kvarC Power factor PF Cos Voltage THD THD V L1 L2 Current THD THD A L1 Harmonic Breakdown Voltage up to the 17th harmonic harm V L1 L2 Harmon...

Страница 30: ...ter the Test screens Note See 4 6 1 MEASUREMENT STATUS for further details Keys functions on the Configuration and Test screens query mode Table 8 Table 8 Keys functions on the Configuration and Test...

Страница 31: ...d Test screens edit mode Key Short keystroke Increase the value or show the next option Reduce the value or show the previous option Previous configuration parameter Next configuration parameter Exit...

Страница 32: ...The data area displays the instantaneous maximum and minimum values of each one of the phases which the device is measuring or calculating Status of the capacitors displays the status of the relays o...

Страница 33: ...rent alarm E15 In the setup menu 5 14 STATUS OF THE STAGES the status of the stages is selected from the following options AUTO The status of the stage depends on the operation performed by the device...

Страница 34: ...tors 4 4 4 OTHER SYMBOLS OF THE DISPLAY The display also shows the following Alarm When the device detects an alarm the backlight of the screen flashes and the alarm icon lights up The cause of the al...

Страница 35: ...rly by flashing once per second An Alarm LED Indicates that an alarm is activated A Fan LED Indicates that the fan is operating A Key pressed LED Lights up when any of the five keys are pressed CPU Fa...

Страница 36: ...activated the symbol flashes on the display screens every 5 seconds Delete maximum values On the maximum value display screen press the key for more than 3 seconds Delete minimum values On the minimu...

Страница 37: ...ase Phase Voltages Parameters L1 Phase Phase Voltage V or kV L2 Phase Phase Voltage V or kV L3 Phase Phase Voltage V or kV Phase Phase Voltage III V or kV Display the minimum values Display the maximu...

Страница 38: ...s L1 Power Factor L2 Power Factor L3 Power Factor Power Factor III L Inductive C capacitive Consumed generated Display the minimum values Display the maximum values Power III Parameters Active Power I...

Страница 39: ...active Power L2 Inductive Reactive Power L3 Inductive Reactive Power Inductive Reactive Power III kvarL or MvarL Display the minimum values Display the maximum values Capacitive Reactive Power Paramet...

Страница 40: ...nimum values Display the maximum values Leakage current Frequency Temperature Parameters Leakage current mA Frequency Hz Temperature C Display the minimum values Display the maximum values Voltage THD...

Страница 41: ...5 17 Display the maximum values Current THD Parameters L1 Current THD L2 Current THD L3 Current THD Display the maximum values Current harmonics Parameters L1 Current harmonic L2 Current harmonic L3 C...

Страница 42: ...y III generated kvarLh or MvarLh Capacitive Reactive Energy III generated kvarCh or MvarCh Apparent Energy III generated kVAh or MVAh Operations Parameters No of operations of stage C1 to C14 Three sc...

Страница 43: ...this alarm has a predefined delay of 5 seconds E05 Overvoltage The voltage measured in some of the phases exceeds the configured voltage Vp n The device disconnects the capacitors automatically In ord...

Страница 44: ...ransformer E17 Number of connections alarm The configured number of operations has been exceeded any capacitor In these alarms two levels have been configured The Lo value When the device exceeds this...

Страница 45: ...to switch to the Currents screen Phase Neutral Voltages Parameters L1 Phase Neutral Voltage V or kV L2 Phase Neutral Voltage V or kV L3 Phase Neutral Voltage V or kV Phase Neutral Voltage III V or kV...

Страница 46: ...meters Cos L Inductive C capacitive consumed generated Display the minimum values Display the maximum values Press the key to switch to the Energy III consumed screen Power Factor Parameters Power fac...

Страница 47: ...II kVA or MVA Display the minimum values Display the maximum values Leakage current Frequency Temperature Parameters Leakage current mA Frequency Hz Temperature C Display the minimum values Display th...

Страница 48: ...Change the harmonic no 3 5 7 9 11 13 15 17 Display the maximum values Current THD Parameters Current THD Display the maximum values Current harmonics Parameters Current harmonic Change the harmonic no...

Страница 49: ...y III generated kvarLh or MvarLh Capacitive Reactive Energy III generated kvarCh or MvarCh Apparent Energy III generated kVAh or MVAh Operations Parameters No of operations of stage C1 to C14 Three sc...

Страница 50: ...Active Power III kW or MW Reactive Power III kvar or Mvar inductive capacitive Cos L Inductive C capacitive consumed generated Phase Phase Voltage V or kV Display the minimum values Display the maximu...

Страница 51: ...meters Cos L Inductive C capacitive consumed generated Display the minimum values Display the maximum values Press the key to switch to the Energy III consumed screen Power Factor Parameters Power fac...

Страница 52: ...Apparent Power III kVA or MVA Display the minimum values Display the maximum values Leakage current Frequency Temperature Parameters Leakage current mA Frequency Hz Temperature C Display the minimum v...

Страница 53: ...o 3 5 7 9 11 13 15 17 Display the maximum values Current THD Parameters Current THD Display the maximum values Current harmonics Parameters Current harmonic Change the harmonic no 3 5 7 9 11 13 15 17...

Страница 54: ...y III generated kvarLh or MvarLh Capacitive Reactive Energy III generated kvarCh or MvarCh Apparent Energy III generated kVAh or MVAh Operations Parameters No of operations of stage C1 to C14 Three sc...

Страница 55: ...ong keystroke 10s of the key in any of the measurement screens causes the device to enter the Test status A very long keystroke 10s of the key in any of theTest screens causes the device to return to...

Страница 56: ...ke 3 s of the key cancels the AutoTest At the end of the AutoTest the device automatically returns to the Individual Test screen Step Test Parameters Leakage current mA Capacitive Reactive Power kvarC...

Страница 57: ...urrent THD Test Parameters Display screen of the Current THD 2U 1C and 3U 1C connection L1 Current THD 3U 3C connection L2 Current THD 3U 3C connection L3 Current THD 3U 3C connection Power III Test P...

Страница 58: ...pre determined temperature is exceeded which can be programmed in 5 17 FAN also connected to the Fan LED A fully programmable alarm relay terminals 39 40 and 41 of Figure 2 see 5 21 ENABLING ALARMS Tw...

Страница 59: ...d the master device of 1200 metres A maximum of 32 Computer SMART III devices can be connected to this bus Use an intelligent RS 232 to RS 485 network protocol converter M54020 intelligent converter t...

Страница 60: ...ltiple logs Exception codes If the bit with greatest weight of the byte corresponding to the function in the reply of the device is 1 this indicates that the next byte is an exception code Table 12 Ex...

Страница 61: ...urrent 1C 1D 21C 21D 31C 31D mA L2 Active Power 1E 1F 21E 21F 31E 31F W L2 Inductive Reactive Power 20 21 220 221 320 321 varL L2 Capacitive Reactive Power 22 23 222 223 322 323 varC L2 Reactive Power...

Страница 62: ...71 370 371 mA Leakage Current 72 73 272 273 372 373 mA Temperature 74 75 274 275 374 375 C 10 L1 voltage THD 7C 7D 27C 27D L2 voltage THD 7E 7F 27E 27F L3 voltage THD 80 81 280 281 L1 current THD 82 8...

Страница 63: ...ic 42C 42D 4B0 4B1 V 100 L3 Voltage Harmonics 42E 441 4B2 4C5 10 L1 Fundamental Current Harmonic 442 443 4C6 4C7 mA L1 Current Harmonics 444 457 4C8 4DB 10 L2 Fundamental Current Harmonic 458 459 4DC...

Страница 64: ...t 3 Bit 2 Bit 1 Bit 0 E16 E15 E14 E13 E12 E11 E10 E09 E08 E07 E06 E05 E04 E03 E02 E01 Bit 32 Bit 31 Bit 30 Bit 29 Bit 28 Bit 27 Bit 26 Bit 25 Bit 24 Bit 23 Bit 22 Bit 21 Bit 20 Bit 19 Bit 18 Bit 16 E1...

Страница 65: ...dress Valid data window Default value Current primary 1090 1 10000 5 Current secondary 1091 0 1 A 1 5 A 1 Voltage primary 1095 1096 1 99999 400 Voltage secondary 1097 1098 1 99999 400 Table 19 Modbus...

Страница 66: ...variables Table 7 Display Configuration variable Address Valid data window Default value Lighting Backlight 1125 0 Comes on when pressing a key 1 ON 2 OFF 0 Light level 1126 0 10 Value 10 7 Language 1...

Страница 67: ...es Table 13 Connection and reclosing time Configuration variable Address Valid data window Default value Connection time 113C 0 999 seconds 10 Reclosing time 113D 0 999 seconds 50 Table 29 Modbus memo...

Страница 68: ...ble Address Valid data window Default value Overvoltage value 114E 114F 0 99999 440 No Voltage Value 1150 1151 0 99999 360 Table 37 Modbus memory map programming variables Table 22 No of operations Co...

Страница 69: ...associated with Alarm E10 1179 0 Output associated with Alarm E11 117A 0 Output associated with Alarm E12 117B 0 Output associated with Alarm E13 117C 0 Output associated with Alarm E14 117D 0 Output...

Страница 70: ...0000 log from which to start reading No of logs 0002 number of logs to be read CRC 70B0 CRC character Response Address Function No of Bytes Log no 1 Log no 2 CRC 0A 04 04 0000 084D 8621 Address 0A Re...

Страница 71: ...e display The password to be entered is a combination of keys It is unique and cannot be configured If it is not entered correctly the device returns to the previous measurement screen If it is entere...

Страница 72: ...key to start the Plug Play function Once started the device undertakes a process of connecting and disconnecting capacitors measurement and calculation in order to obtain the following parameters of...

Страница 73: ...results screen If any errors occur during the execution of the Plug Play function the process will be aborted and the errors will be displayed on the screen When a parameter has been calculated corre...

Страница 74: ...son it is necessary prior to the Plug Play function to solve the possible problems with faulty capacitors by means of maintenance or replacement as well as to configure all the stages in Auto mode as...

Страница 75: ...Current primary Maximum value 9999 Minimum value 1 Current secondary Possible values 1 or 5 Maximum possible current ratio 2500 Note The current ratio is the ratio between the current primary and seco...

Страница 76: ...eing inductive L or capacitive C Press the key to enter edit mode It is identified by the symbol and the flashing of the digits to be modified The key increases the digit value or shows the next optio...

Страница 77: ...t value The key reduces the digit value The key skips to the previous digit and the key skips to the next digit Press to validate the data the symbol disappears from the display Ton Maximum value 999...

Страница 78: ...This parameter is used to adapt the device to the various options for connecting the power supply and measurement cables and the current transformers to the phases of the three phase system The connec...

Страница 79: ...witches to the simulation screen 5 30 SIMULATION SCREEN Table 42 Phase connection options Phases V measurement phase CT connection phase PH1 L1 L2 L3 L1 PH2 L1 L2 L3 L2 PH3 L1 L2 L3 L3 PH4 L1 L2 L3 L1...

Страница 80: ...eys are pressed for 5 minutes the device switches to the simulation screen 5 30 SIMULATION SCREEN 5 7 NO OF STAGES In this point the number of stages is selected in other words the number of relay out...

Страница 81: ...next ones have four times the power of the first one See 4 1 4 REGULATION PROGRAM When configuring the program remember that the subsequent stage cannot be lower than the prior stage and that the firs...

Страница 82: ...0 57 1500 5 0 05 0 06 0 07 0 10 0 12 0 14 0 19 0 24 0 29 0 36 0 38 2000 5 0 05 0 07 0 09 0 11 0 14 0 18 0 22 0 27 0 28 2500 5 0 06 0 07 0 09 0 12 0 14 0 17 0 22 0 23 3000 5 0 05 0 06 0 07 0 10 0 12 0...

Страница 83: ...itor is of 60 kvar with a current transformer having a ratio of 500 5 and the calculation would be made as follows Current of the smallest capacitor Ic A IC 6 8 6 400 3 60000 K Factor 100 5 500 K The...

Страница 84: ...than the maximum value the backlight of the display flashes and the value entered is replaced with the minimum or maximum value or with the last value validated Press the key to access the next progra...

Страница 85: ...ss the next programming step If no keys are pressed for 5 minutes the device switches to the simulation screen 5 30 SIMULATION SCREEN 5 11 EXPERT SETUP In this point it is possible to decide whether t...

Страница 86: ...e data the symbol disappears from the display Voltage primary Maximum value 99999 Minimum value 1 Voltage secondary Maximum value 99999 Minimum value 1 Maximum possible voltage ratio 1000 Note The vol...

Страница 87: ...increases the digit value or shows the next option The key reduces the digit value or shows the next option The key skips to the previous digit and the key skips to the next digit Press to validate t...

Страница 88: ...the system does not take into account its connected power By default all the stages are configured as AUTO On the measurement screens the forced states of the stages are shown by activating the botto...

Страница 89: ...minutes The light level is also configured between 0 and 100 when the display is on The display language options are as follows ESP Spanish EnG English FrA French Tr Turkish The key increases the dig...

Страница 90: ...key shows the next option The key shows the previous option Press to validate the data the symbol disappears from the display Press the key to access the next programming step If no keys are pressed f...

Страница 91: ...the backlight of the display flashes and the value entered is replaced with the minimum or maximum value or with the last value validated Press the key to access the next programming step If no keys a...

Страница 92: ...key skips to the next parameter Press to validate the data the symbol disappears from the display Maximum value 0 Minimum value 100 Note If 0 is programmed the functionality is disabled Note The valu...

Страница 93: ...option The key reduces the digit value or shows the next option The key skips to the previous digit or the previous parameter The key skips to the next digit or the next parameter Press to validate th...

Страница 94: ...eters can be deleted n maximum and minimum values E energies C number of connections of the stages The key shows the next option The key shows the previous option The key skips to the previous paramet...

Страница 95: ...or or alarm Association with a relay or digital output alarm reLe the activation of the alarm is associated with the alarm relay d1 the activation of the alarm is associated with digital output 1 d2 t...

Страница 96: ...ms are triggered the device enters the Disconnection status and disconnects all the stages The device does not return to its normal operating status until the cause for the alarm disappears The key in...

Страница 97: ...ode It is identified by the symbol and the flashing of the digits to be modified In order to avoid possible false activations of said alarms they have a predefined delay of 15 seconds The parameters t...

Страница 98: ...d value and the current is higher than the programmed value Note The alarm must be enabled 5 21 ENABLING ALARMS Press the key to enter edit mode It is identified by the symbol and the flashing of the...

Страница 99: ...hich the device measures Note The alarm must be enabled 5 21 ENABLING ALARMS Press the key to enter edit mode It is identified by the symbol and the flashing of the digits to be modified The parameter...

Страница 100: ...the maximum value the backlight of the display flashes and the value entered is replaced with the minimum or maximum value or with the last value validated Press the key to access the next programming...

Страница 101: ...10 minutes it deactivates the alarms and returns to the normal operating status In the No Connection status the device does not connect the stages but also does not disconnect them if the operation r...

Страница 102: ...9 is triggered and if alarm E12 is enabled the Computer SMART III device enters the Disconnection status and activates alarm E12 If the device falls back under the Lo value during 10 minutes it deacti...

Страница 103: ...flashing of the digits to be modified The parameters to be configured are The alarm value when the device exceeds this value alarm E13 is triggered Search for the responsible stage if this parameter...

Страница 104: ...of any of the stages above which the alarm E17 will be triggered can be configured Note The alarm must be enabled 5 21 ENABLING ALARMS Press the key to enter edit mode It is identified by the symbol a...

Страница 105: ...certain information which can be used to decide to enter the measurement status when pressing the key during 3 seconds or if no keys are pressed during 5 minutes or to return to the configuration scre...

Страница 106: ...mum measurement current Istart 50 mA Leakage current measurement circuit By means of an earth leakage transformer with a ratio of 500 turns Nominal current of the secondary 3 mA Current measurement ma...

Страница 107: ...Modbus RTU Baud rate 9600 19200 Stop bits 1 2 Parity none even odd Environmental features Operating temperature 10 C 55 C Storage temperature 20 C 70 C Relative humidity non condensing 5 95 Maximum al...

Страница 108: ...61010 2010 Electromagnetic compatibility EMC Part 6 2 Generic standards Immuni ty for industrial environments UNE EN 61000 6 2 2005 Electromagnetic compatibility EMC Part 6 4 Generic standards Emis s...

Страница 109: ...per installation or improper usage of the unit Consequently this guarantee does not apply to failures occurring in the following cases Overvoltages and or electrical disturbances in the supply Water i...

Страница 110: ...9 CE CERTIFICATE 110 Computer SMART III Instruction Manual...

Страница 111: ...111 Instruction Manual Computer SMART III...

Страница 112: ...112 Computer SMART III Instruction Manual...

Страница 113: ...113 Instruction Manual Computer SMART III...

Страница 114: ...CIRCUTOR SA Vial Sant Jordi s n 08232 Viladecavalls Barcelona Tel 34 93 745 29 00 Fax 34 93 745 29 14 www circutor com central circutor com...

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