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Pilot Communications PMAC811 Product Manual

Intelligent motor protection controller
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Product Manual of PMAC811 Intelligent Motor
Protection Controller
Installation & Operation Manual
V1.00

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Summary of Contents for Pilot Communications PMAC811

  • Page 1 Product Manual of PMAC811 Intelligent Motor Protection Controller Installation & Operation Manual V1.00...

  • Page 2: Safety Precautions

    Safety Precautions Danger and Warning! This equipment can only be installed by professionals. The manufacturer shall not be liable for any failure caused by failure to comply with the instructions in this manual. Notice! After removing the package of the instrument, please read all contents of the manual before setting or using it.

  • Page 3: Table Of Contents

    CONTENT Chapter 1 Product Introduction..................1 1.1 Design description.................... 1 1.2 Product features....................1 1.3 Product composition..................2 Chapter 2 Technical Parameters..................3 2.1 System parameter.....................3 2.2 Symbol comparison table................3 2.3 Measurement data range and accuracy............4 2.4 Protect data range and accuracy..............4 2.5 Electromagnetic properties................
  • Page 4 5.7 Emergency stop....................15 Chapter 6 Panel Display....................16 6.1 Description....................... 16 6.2 Main function....................18 Chapter 7 Product terminal function and CT module description......28 7.1 Product terminal....................28 7.2 CT module......................31 Chapter 8 Motor Parameter Setting................33 8.1 Rated current of motor...................33 8.2 Rated voltage of motor..................
  • Page 5 9.4 Overload protection..................39 9.5 tE time protection....................41 9.6 Over current locked rotor protection............44 9.7 Open-phase protection.................. 45 9.8 Current unbalance protection...............45 9.9 Short circuit protection...................46 9.10 Ground-fault protection................47 9.11 Leakage protection..................48 9.12 Under load protection.................. 49 9.13 External fault protection................49 9.14 Overvoltage protection................
  • Page 6 Chapter 11 System Parameter Setting.................58 11.1 Communication settings................58 11.2 Time settings....................58 11.3 Language settings..................58 11.4 Clear record....................58 Chapter 12 Switch input and relay output configuration...........59 12.1 Protection mode....................59 12.2 Direct start mode..................59 12.3 Bidirectional reversible start mode............60 12.4 Control breaker mode..................61 12.5 Star / delta 2R start and autotransformer start modes......61 12.6 Three relay modes of star / delta start and autotransformer start..62...

  • Page 7: Chapter 1 Product Introduction

    Chapter 1 Product Introduction 1.1 Design description PMAC811 intelligent motor protection controller is a new generation of enhanced high-performance motor protection device which integrates motor protection, measurement, information management, communication and control functions. It is suitable for three-phase AC asynchronous motor with rated voltage of AC380V or AC690V.

  • Page 8: Product Composition

    ■ wide power supply design, common for AC or DC； 1.3 Product composition PMAC811 is composed of main body, CT module, leakage module and expansion module. The expansion module needs special ordering, and the main body size is fixed. The size of special CT module is divided into 1A, 5A, 25A, 100A, 250A and 400A.

  • Page 9: Chapter 2 Technical Parameters

    Chapter 2 Technical Parameters 2.1 System parameter Rated voltage of motor: AC 380V or 690V, 1-690V can be set. Rated current of motor: 0.1~820A. Controller power supply voltage: AC 85V ~ 265V, DC 100V ~ 300V universal. Switching value input: internal DC 24V power supply. Power consumption: 3W for normal operation, 8W for protection starting.

  • Page 10: Measurement Data Range And Accuracy

    2.3 Measurement data range and accuracy Item Range Accuracy Item Range Accuracy ±2% ±1% 10%～50%Ie -1～1 ±0.5% 50/60Hz ±0.05Hz 50%～200%Ie ±2% ±2% 200%～800%Ie 0.5～1000.0kW ±1% AOUT ±2% 100～1000mA 4～20mA electrical 99999999.9 ±0.5% ±1% 50%～150%Ue degree 2.4 Protect data range and accuracy Item Range Accuracy...

  • Page 11: Use Environment

    Immunity to conducted disturbances of GB ／ T 17626.6-2017 Level 3 radio-frequency electromagnetic fields （ IEC61000-4-6 ） Power frequency magnetic field GB ／ T 17626.8-2006 Level 5 immunity （ IEC61000-4-8 ） GB／T 17626.18-2016 Immunity of damped oscillation wave Level 3 （IEC61000-4-18）...

  • Page 12: Chapter 3 Dimension And Installation Method

    Chapter 3 Dimension and Installation Method 3.1 Overall dimension of controller body 14.00 117.00 90.00 96.80 Fig.3-1 Controller appearance specification drawing and installation dimension drawing Shell back size: 96.8 × 48.8mm, recommended opening size: 97.5 × 49.5mm...

  • Page 13: Ct Module Dimensions

    3.2 CT module dimensions Fig. 3-2 Outline dimension of CT module under 100A 「Note」 ： This CT module is installed with standard 35mm guide rail.
  • Page 14 3- 35 Front view Yellow * Green * Red * 2XR3 Black(out) Yellow*(out) Red*(out) Green*(out) Top view Fig. 3-3 outline dimension of 250A, 400A CT module...

  • Page 15: Overall Dimension Of Leakage Ct

    3.3 Overall dimension of leakage CT Fig. 3-4 PMAC503L-100A is applicable to rated current of 100A and below Fig. 3-5 PMAC503L-250A for rated current 120A-250A...
  • Page 16 Fig. 3-6 PMAC503L-400A is applicable to rated current of 300A-400A 「Note」 ： 1. The rated value of all leakage CTS is 1A. 2. All specifications of leakage transformer are not equipped with secondary side outgoing line. Users need to install the appropriate length of secondary side outgoing line according to the needs of the site.

  • Page 17: Chapter 4 Controller Function Configuration

    Chapter 4 Controller function configuration Controller function configuration comparison table PMAC811 Classification Function Short circuit (quick break) ● ● ● protection Thermal overload protection ● ● ● Starting overcurrent / running stall ● ● ● TE time protection ● ●...
  • Page 18 Voltage unbalance protection ○ ○ ○ Contactor fault protection ● ● ● External fault protection ● ● ● Fuse core break alarm ○ ○ ○ Negative sequence current section ● ● ● I / II Voltage loss restart function ○ ○...
  • Page 19 Ground / average current ● ● ● 2nd-7th harmonic current ● ● 2nd-7th harmonic voltage ○ ○ Voltage unbalance rate ○ ○ Positive / negative sequence ○ ○ ○ voltage Fault recording ● ● Switching input First Modbus ● ● Communicati ●...

  • Page 20: Chapter 5 Motor Control And Other Functions

    Chapter 5 Motor control and other functions 5.1 Division of motor operation state PMAC811 divides motor operation into four states: Ready state, Start state, Operation state and Stop state. Ready state：When the motor is ready, it can be started immediately.

  • Page 21: Fault Info Output

    5.5 Reset mode After pmac811 protection alarms or trips and enters the shutdown state, if it needs to operate again, reset and clear the fault information first. There are many ways to reset: display panel (reset button) and controller Di input terminal (28 pin reset terminal), or remote reset can be realized through communication port.

  • Page 22: Chapter 6 Panel Display

    Chapter 6 Panel Display 6.1 Description Start Stop Start Reset Display mainly provides control, data display and setting functions. Indicator light: Identification Extinguish Always bright Flicker Start Non-start state Starting state Non- operation state Running state Alarm No alarm Warning Trip No tripping Tripping...

  • Page 23: Control Key

    Control key： "Start A", forward starting motor. "Start B", reverse starting motor, valid only in bidirectional reversible start. "Stop" to stop the motor. "Reset", reset the fault information in case of fault alarm or trip of motor. Setting key： “ ”...

  • Page 24: Main Function

    All the parameter modification operations in this menu can refer to this example. Interface： Front panel interface: as a debugging interface, it can be connected to the serial communication port of the computer through a special connecting cable. RJ45 interface of rear panel: connected to expansion module. 6.2 Main function After the display module is powered on and running, the default control interface is as follows：...
  • Page 25 Press the "↓" key Direct Local Mbs1 Addr：001 Iavg 0.00A 0.0 % 0 mA 0.00 A 0.00 A 0.00 A DI: O O O O O O O O Direct Local Mbs1 Addr：001 Direct Local Mbs1 Addr：001 0.00A 0.0 V 0.00A 0.0 V 0.00A...
  • Page 26 Main interface: After pressing the Confirm key, the display is as follows: Direct Local Mbs1 Addr：001 Home Metering Control Paras Records System Paras Rated Paras Device Info Relay Paras Maintain DI: O O O O O O O O Real time data: In the default interface, press the confirmation key to enter the "home page"...
  • Page 27 Direct Local Mbs1 Addr：001 Direct Local Mbs1 Addr：001 Direct Local Mbs1 Addr：001 I data UB Harm IC Harm 0.00 A Harm 2th Harm 2th 0.0 % 0.0 % I Data I Data IA Harm 0.0 % 0.0 % Harm 3th Harm 3th 0.00 A U Data...

  • Page 28: Record Information

    Record information: In the default interface, press the confirmation key to enter the home interface, move the cursor to record information, press the confirmation key to enter, and then press the "↑" and "↓" keys to switch to the corresponding interface. As shown in the figure： Direct Local Mbs1 Addr：001 Direct...
  • Page 29 Motor parameters: In the default interface, press the confirmation key to enter the home interface, move the cursor to the motor parameter, press the confirmation key to enter, and then press the "↑" and "↓" keys to switch to the corresponding interface. As shown in the figure: Direct Local Mbs1 Addr：001 Rated Data...
  • Page 30 Protection value： In the default interface, press the confirmation key to enter the home interface, move the cursor to the protection setting value, press the confirmation key to enter, and then press the "↑" and "↓" keys to switch to the corresponding interface. As shown in the figure：...

  • Page 31: Control Parameter

    Control parameter： In the default interface, press the confirm key to enter the home interface, move the cursor to control parameters, press the confirm key to enter, and then press the "↑" and "↓" keys to switch to the corresponding interface. As shown in the figure: Direct Local Mbs1 Addr：001 Restart...

  • Page 32: System Parameter

    System parameter： In the default interface, press the confirm key to enter the home interface, move the cursor to the system parameter, press the confirm key to enter, and then press the "↑" and "↓" keys to switch to the corresponding interface. As shown in the figure: Local Mbs1 Addr ：001 Direct Modbus-1 Addr 1...

  • Page 33: Device Information

    Device information： In the default interface, press the confirmation key to enter the home interface, move the cursor to the device information, press the confirmation key to enter, and then press the "↑" and "↓" keys to switch to the corresponding interface. As shown in the figure: Direct Local Mbs1 Addr：001...

  • Page 34: Chapter 7 Product Terminal Function And Ct Module Description

    Chapter 7 Product terminal function and CT module description 7.1 Product terminal Terminal function： Number Identification Function Initial state RL11 Relay 1, fault and stop Normally closed RL12 RL21 Relay 2, start A Normally open RL22...
  • Page 35 RL31 Relay 3, ground protection or Normally open start B RL32 RL41 Relay 4, fault Normally open RL42 Relay 4, fault Normally closed common port RL51 Relay 5, fault or operation hold Normally open RL52 Phase A voltage input Phase B voltage input Phase C voltage input neutral conductor SHLD...
  • Page 36 Switch input 3 Switch input 4 Switch input 5 Switch input 6 Switch input 7 Switch input 8 Analog output positive pole Analog output negative pole Leakage current input 1 Leakage current input 2 Phase A current input Secondary current Phase B current input input terminal of Phase C current input...

  • Page 37: Ct Module

    7.2 CT module Primary side inlet Secondary side outlet yellow green black ■ 100A and below: Current incoming line： T1，Phase A current incoming line T2，Phase B current incoming line T3，Phase C current incoming line Current exit line： The yellow, green, red and black cables of the outgoing line at the secondary side represent the secondary outgoing line end and common end of phase a, B and C current respectively, and connect them to the corresponding current terminals of the main body.

  • Page 38: Connection Type

    ■250A and 400A specifications： Primary side inlet Yellow Green (OUT)Black (OUT)Yellow * (OUT)Red * (OUT)Green * Secondary side outlet Connection type： The yellow, green, red and black cables of the secondary outgoing line respectively represent the secondary outgoing line terminal and common terminal of phase a, B and C current, and connect them to the corresponding current terminals of the main body.

  • Page 39: Chapter 8 Motor Parameter Setting

    8.4 CT transformation ratio of main circuit of motor (When adding one level of CT) Because pmac811 is equipped with its own special split CT module, and the measurement range is up to 820a, it is generally unnecessary for users to configure external CT additionally;...

  • Page 40: Maximum Breaking Current Of Contactor

    8.5 Maximum breaking current of contactor Setting range：1.0～10.0Ie。 The factory default maximum breaking current is 8.0Ie。 8.6 Device operation mode Setting range ： Protection mode, Direct start mode, Bidirectional reversible start mode, Control circuit breaker mode, Star delta start two relay mode, Autotransformer two relay start mode.

  • Page 41: Rated Frequency

    product will be used after initialization: 1) When the authority position switch of DI5 terminal is turned on, the panel control is effective, and DI1 forward start and DI3 stop control. Invalid communication control. 2) When the authority position switch of DI5 terminal is closed, the panel control is invalid, DI1 forward start and DI3 stop control.

  • Page 42: Multiple Of Aout

    8.11 Multiple of AOUT Multiple of AOUT: 1.0-10.0. If the multiple of AOUT is set to 10, it means that 0 corresponds to 4mA, and 10ie corresponds to 20mA. When the object is three-phase current unbalance rate, the multiple setting is invalid. When the multiple of AOUT is set to 1, the corresponding relations of various variable outputs are as follows：...

  • Page 43: Chapter 9 Setting Of Protection Parameters

    Chapter 9 Setting of Protection Parameters 9.1 Description PMAC811 is based on the data acquisition of three-phase current, three-phase line voltage, grounding current, thermistor and switch state input to protect and control the motor comprehensively. The protection function compares the collected data...

  • Page 44: Starting Overcurrent Protection

    The parameters of start-up time-out protection to be set include： Parameter Range Default Mode of execution Exit / Alarm / Trip Trip Time value 0.5s～60.0s Starting mode No / soft starter Nothing The setting of the starting time can be 1.2 times of the actual starting time of the motor, i.e.

  • Page 45: Overload Protection

    9.4 Overload protection Overload protection is a common and commonly used motor protection function, which mainly protects the motor from overheating and insulation reduction caused by long-term operation above the rated current, thus burning out the motor. The overload protection function provides protection for the motor according to the inverse time limit overload protection curve provided.
  • Page 46 1000 1100 1200 1400 1800 The cooling time is that the motor can be reset after the occurrence of overload. If the overload protection function is put into operation, the hot melt value will trip when it reaches 100%, and the alarm setting value is the hot melt value. For the setting of cooling time: after the motor stops, its cooling process is simulated as a decay index process, and the cooling speed is controlled by this setting value.

  • Page 47: Te Time Protection

    Fig. 8-1 characteristic curve of overload protection 9.5 tE time protection The time protection function of tE takes into account the ratio of locked rotor current to nominal current of the motor and the maximum allowable motor temperature of the corresponding environmental class.
  • Page 48 When the time protection function of tE is turned on, the overload protection function will be turned off automatically. The time protection function of tE conforms to the relevant provisions of gb3836.3-2010 standard. It is suitable for continuous operation, including easy starting and infrequent starting without obvious additional temperature rise.
  • Page 49 Fig. 8-2 tE protection characteristic curve Among ① is figure 3 of 5.1.4.3 in GB3836.3-2010 standard. ② time protection action curve of the product. 「Note」 ： 1. In the actual system, the exit time of the protection also needs to consider the fixed action delay of the relay and the fixed delay of the external mechanical structure.

  • Page 50: Over Current Locked Rotor Protection

    9.6 Over current locked rotor protection The over-current locked rotor protection is a special protection of the motor, which is suitable for the protection of the transmission device, pump, fan, cutting machine and compressor, etc. due to the overload or the mechanical reasons of itself, the motor shaft is stuck (commonly known as "holding brake") and other fault current is very large.

  • Page 51: Open-Phase Protection

    9.7 Open-phase protection Open-phase protection is very harmful to the motor. In actual operation, the customer can consider putting the protection into operation. The open-phase protection parameters to be set include： Parameter Range Default Mode of execution Exit / Alarm / Trip Trip Delay time 4.0s...

  • Page 52: Short Circuit Protection

    The calculation formula of unbalance rate is as follows：   100% Iav Ie max( Among Imax: Maximum three-phase current. Imin: minimum three phase current. The denominator of the formula takes the maximum value of the average current and rated current of the current motor as the denominator. Protection action characteristics: during the startup or operation of the device, if the three-phase current unbalance rate is ≥...

  • Page 53: Ground-Fault Protection

    9.10 Ground-fault protection The ground-fault protection is used to protect the short circuit fault of the phase line to the metal shell of the motor. The ground-fault protection can be closed. If the protection is opened by the user, it will be put into operation during the starting process.

  • Page 54: Leakage Protection

    contactor, the protective action drives the shunt tripper of the breaker, and the contactor trips with a delay of 200m. On the contrary, the product judges that the grounding current of the motor is less than the maximum breaking current of the contactor, and the protection directly trips the contactor.

  • Page 55: Under Load Protection

    9.12 Under load protection Motor under load generally does not need protection, but for the load situation may appear abnormal mutation, such as the sudden fracture of the pipeline conveyor belt and other occasions need to put under load protection. Under load protection parameters to be set include: Parameter Range...

  • Page 56: Overvoltage Protection

    9.14 Overvoltage protection The over-voltage protection function can protect the over-voltage fault in the primary circuit of the motor. The overvoltage protection parameters to be set include： Parameter Range Default Mode of execution Exit / Alarm / Trip / Total Exit Alarm value 110.0%Ue...

  • Page 57: Under Power Protection

    value to about 70%, or adjust it according to the load. Protection action characteristics: during operation, if the voltage of any phase line is less than or equal to the set value until the end of the delay time, the controller acts on the protection output.

  • Page 58: Tv Disconnection Protection

    9.18 TV disconnection protection After TV disconnection, the voltage signal received by the controller is abnormal, which leads to the abnormal control of the motor. The voltage disconnection protection parameters to be set include: Parameter Range Default Mode of execution Exit / Alarm Exit 9.19 Wiring check...

  • Page 59: Negative Sequence Current Section I Protection

    open-loop mode, auto coupling start three relay close mode is invalid. 9.21 Negative sequence current section I protection When the three-phase current is unbalanced, the negative sequence current will be generated. When the negative sequence current reaches a certain degree, if the protection is put into operation, the protection action will be generated.

  • Page 60: Voltage Unbalance Protection

    9.23 Voltage unbalance protection The voltage unbalance protection prevents the motor from overheating due to the unbalanced voltage of the system. In the process of starting and running the motor, the controller calculates the three-phase voltage unbalance degree of the motor. When the voltage unbalance degree is detected to be greater than the fixed value, the voltage unbalance protection starts and executes according to the timing limit mode.

  • Page 61: Chapter 10 Control Parameter Setting

    Chapter 10 Control Parameter Setting 10.1 Undervoltage restart For the motor circuit of continuous operation, in case of short-term power loss of the system, in order to recover the process flow as soon as possible, the motor needs to restart automatically when the power supply is restored. The restart function provides the automatic restart function of the motor when the system loses power for a short time, and has two restart functions: "immediate restart"...

  • Page 62: Self-Starting

    judgment. If the "immediate restart" fails, (i.e. quitting the "immediate restart" or putting the "immediate restart" into operation, but the voltage does not recover to the "recovery voltage" within the "time of immediate restart and power loss"), but recovers to the "recovery voltage"...
  • Page 63 If the system self-starting input / exit is "on" and the start mode is "start mode", when the voltage recovery is detected after power on, the device will automatically send the restart command after "self-starting delay time". If the system self-starting input / exit is "exit", the function exits。...

  • Page 64: Chapter 11 System Parameter Setting

    Chapter 11 System Parameter Setting 11.1 Communication settings Address setting range: 1～247（Modbus-RTU）. 1～123（Profibus-DP）. Baud rate setting range：4800, 9600, 19200, 38400. The factory default baud rate is 9600. 11.2 Time settings Setting range：2001-2099 年. 11.3 Language settings Setting range：0 Chinese. 1 English. 11.4 Clear record The clearing records include: Power clearing, Event clearing and Statistical clearing.

  • Page 65: Chapter 12 Switch Input And Relay Output Configuration

    Universal DI4 Local / remote Overflow (including grounding) Contactor 1 protection signal output Status Breaker status Motor fault signal output PMAC811-A has this node, which is defined as the output External fault 1 power swing operation signal 12.2 Direct start mode...

  • Page 66: Bidirectional Reversible Start Mode

    Local / remote Overflow (including grounding) Contactor 1 protection signal output Status Breaker status Motor fault signal output PMAC811-A has this node, which is defined as the output External fault 1 power swing operation signal 12.3 Bidirectional reversible start mode...

  • Page 67: Control Breaker Mode

    Stop overflow remote protection output Universal DI6 Breaker Motor fault signal status output PMAC811-A has this Universal DI8 spare node output 12.5 Star / delta 2R start and autotransformer start modes Terminal Signal Relay Usage notes Usage notes coding input...

  • Page 68: Three Relay Modes Of Star / Delta Start And Autotransformer Start

    Breaker Motor fault signal status output PMAC811-A has this node, which is defined External fault as the output of power swing operation signal 12.6 Three relay modes of star / delta start and autotransformer start Terminal Signal Relay Usage notes...

  • Page 69: Chapter 13 Typical Operation Mode Wiring

    3. In all schematic wiring diagrams, the spare relay output [10, 11] of the protector is PMAC811-A product model, and PMAC811-B / C product model does not have this node. 4. The above three items will not be noted in all the following schematic wiring...

  • Page 70: Direct Start Mode Wiring

    13.2 Direct start mode wiring Test Switch Reserve Fault Overflow Trip/Stop Start fault Output Extended Port（RJ45） 4~20mA Analog Output In the direct start mode, when the controller is powered on, if the wiring check is opened, first check whether the contactor KM is in the release state. If it is not in the release state, report "wiring error", and the fault relay is closed;...

  • Page 71: Bidirectional Reversible Start Mode Wiring

    13.3 Bidirectional reversible start mode wiring Test Switch Reserve Fault Trip/Stop Start Start Output Extended Port（RJ45） 4~20mA Analog Output Under the bidirectional reversible starting mode, the wiring inspection is the same as the direct starting; when the controller receives the starting a (pulse) command and the starting a relay is closed, the contactor KM1 is powered on and self-maintained.

  • Page 72: Control Breaker Mode Wiring

    13.4 Control breaker mode wiring Reserve Fault Start Stop Output Extended Port（RJ45） 4~20mA Analog Output In the control circuit breaker mode, when the controller receives the start command, the output pulse of the start relay is used as the closing pulse of the circuit breaker, and the "start"...

  • Page 73: Star / Delta Start Mode Wiring

    13.5 Star / delta start mode wiring Test Switch Reserve Fault Trip/Stop Start A Start B Output Extended Port（RJ45） 4~20mA Analog Output In star delta starting mode, when the controller receives the starting command and the starting a (pulse) relay is closed, the contactors KM1 and KM3 are powered on and closed, and the "start"...

  • Page 74: Autotransformer Start Mode Wiring

    13.6 Autotransformer Start mode wiring Test Switch Reserve Reserve Fault Trip/Stop Start A Start B Output Extended Port（RJ45） 4~20mA Analog Output The starting mode of autotransformer is the same as star delta starting mode logic.

  • Page 75: Appendix A Basic Settings And Faqs

    Appendix A Basic Settings and FAQs 1. Basic settings Before normal operation, please make the following system parameter settings: (1) rated current of motor; (2) if the controller is equipped with a special CT module and an external CT to measure the primary current of the motor, it is necessary to input the correct CT ratio;...

  • Page 76: Handling Of Common Problems

    2. Handling of common problems Possible problems Possible reasons Possible solutions Equipment does not Check whether the correct working Power failed to work normally after voltage is applied to the L / + and N / - connect to device power on terminals of the equipment Incorrect voltage...
  • Page 77 The communication Check if 120 ohm resistance is added link is not connected to the terminal resistance Communication link Check whether the communication disturbed shield is well grounded Communication line Check if the communication cable is interruption disconnected The upper computer Check whether the control Permission is not cannot start / stop...

  • Page 78: Appendix B Ordering Information

    Appendix B Ordering Information Ordering information of controller body 「Note」 ： 1. One standard Modbus RTU communication, tE time protection and grounding protection (internal vector and algorithm). 2. The current of three-phase current transformer (1-400) A is direct connection type, with protection level of 5P10, and the transformer is matched by the company.
  • Page 79 PROFIBUS DP communication connector), increase the number of DI / DO, analog input and other functions, please give special instructions when ordering. Example： PMAC811-B-25A-AO, color display, 4 relay outputs, with harmonic and fault recording functions, transformer rated current 25A, standard configuration of 1 Modbus communication, 1 analog output of 4-20mA.
  • Page 80 Statement： The information provided in this manual can be modified  without prior notice. Zhuhai Pilot Technology Co., Ltd. reserves the right to  interpret the information. Add: No. 15, Keji 6 Road, ChuangxinHaian, Tangjia High-tech Zone, Zhuhai, Guangdong, 519085 China. Tel：400-878-6678 Fax：0756-3629600 3629670...

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