Microsoft Word - PME-1230-V16.doc

PME-1230 Three Phase Multi-function Meter User s Manual 1

Table of Contents 1. Introduction...3 2. Features...3 3. Notes and Warnings...3 4. Product Specifications...4 5. Product Dimensions...5 6. Product Mounting (Panel Mount)...5 7. Displayed Values...6 8. Measurement Range & Resolution...7 9. Panel Display...8 10. Operation...9 11. Terminals...11 12. Wiring...12 13. Communication Protocol...19 14. Q & A...25 2

1. Introduction The PME-1230 serves as an innovative and perfect energy management tool that can be used to monitor power for consumption analysis and department cost allocation, and is also suitable for electrical energy surveying applications. The PME-1230 can measure voltage, current, power, power factor and energy. With its small surface area and shallow depth, the PME-1210 is perfect for even small panels and even compact enough to be placed within the tight space of most existing panels. The PME-1230 is the company s third generation in metering technology. It is completely digital, thus enabling it to attain a high degree of accuracy, and can measure starting currents as low as 5mA. It can be connected to a computer host for remote auto meter reading, data collection and monitoring via the Modbus protocol over an RS485 communications interface. The PME-1230 is especially suited for users wanting to be able to save energy by taking control of their energy usage. 2. Features 1. Slim, short and compact. 2. Suitable for various types of electrical Panels 3. Communication capability through RS485 interface and Modbus/RTU protocol 4. Measures voltage/current/ Kw/Kwh/Kvarh/PF and frequency 5. High accuracy/ low cost 3. Notes and Warnings For safety purposes, please observe the following steps when unwrapping the package: 1. When opening the package, check that the contents have not been damaged during transit. 2. Check to make sure that the product model and the labeling on the outside of the packaging are consistent. 3

3. This product is designed for and suitable for most electrical power panels. 4. Do not install this product at the openings of ventilation ducts or near heat sources. 5. Make sure that the actual wiring conforms to the wiring diagram designated in this manual. 6. Guard against dust and water damage. 7. Make sure all power sources to be connected to the product have been shut off before installing. 8. This symbol means double insulation. This symbol means to beware of electric shock, turn off all adjacent sources of high voltage during installation. 4. Product Specifications 1. Voltage measurement: 1p3w/3p3w/3p4w, 80V ~ 350VAC 2. Current measurement: 5mA~5A 3. Frequency Measurement: 45 to 65Hz 4. Auxiliary Power: 110 or 220VAC ±15%,50/60Hz 5. Power Consumption: 5VA 6. Operating Temperature: -10~70 C 7. Operating Humidity : 0 to 90% RH 8. Dimensions : 110mm(W) x50mm(h) x112mm(d) 9. Weight: 450g (excluding external CT) 10. Mounting : DIN 96x48 panel mount 11. Communications : Modbus RTU,RS485 Default Baud Rate: 9600 bps (can be changed) Data format: 8/N/1 Supported Baud Rate: 1200, 2400, 4800, 9600 (set through on-device buttons or Modbus) 12. Accuracy: Class 1 4

5. Product Dimensions 6. Product Mounting (Panel Mount) 1. Make a rectangular cut-out for inserting the product. 2. Remove the mounting clip, then insert and push the product along its length into the panel cut-out. 3. From the rear of the panel, restore the mounting clip onto the product and tighten the mounting clip by pushing it towards the panel. 5

7. Displayed Values 7.01. Main Display 1. Current (A): resolution 0.001 A 2. Phase/line voltage (V): resolution 0.1 V 3. Active power (KW): resolution 0.001 KW 4. Active energy (KWH): resolution 0.1 KWH 5. Reactive energy (KVARH): resolution 0.1 KVARH 6. Power factor (PF): resolution 0.001 7. Frequency (F): resolution 0.1Hz 7.02. Setting display 1. Having all the LEDs lit at the same time helps in testing their proper functioning. 2. Firmware version: r-xxxx,xxxx=version number 3. RS485 address: 0~254 4. BAUD RATE: 1200/2400/4800/9600 5. PT: 1.00~400.00 6. CT: 1~1000 7. 5A YES: Internal 5A CT 8. 1P3W(single phase three wire)/ 3P3W-2CT(three phase three wire)/ 3P3W-3CT(three phase three wire)/ 3P4W(three phase four wire) 7.03. LED Display 1. A: current indicator LED 2. V: voltage indicator LED 6

3. KW: active power indicator LED 4. KWH: active accumulate energy indicator LED 5. KVARH: reactive accumulate energy indicator LED 6. PF: power factor indicator LED 7. TX: transmit indicator LED 8. RX: receive indicator LED 8. Measurement Range & Resolution 1. A phase current (A): measurement range 5mA~5A,accuracy 0.5% 2. B phase current (A): measurement range 5mA~5A,accuracy 0.5% 3. C phase current (A): measurement range 5mA~5A,accuracy 0.5% 4. A phase Voltage (V): measurement range AC 80V~AC 350V,accuracy 0.5% 5. B phase Voltage (V): measurement range AC 80V~AC 350V, accuracy 0.5% 6. C phase Voltage (V): measurement range AC 80V~AC 350V, accuracy 0.5% 7. AB line voltage: measurement range AC 138V~AC 600V, accuracy 0.5% 8. BC line voltage: measurement range AC 138V~AC 600V, accuracy 0.5% 9. CA line voltage: measurement range AC 138V~AC 600V, accuracy 0.5% 10. Active power (KW) accuracy 1% 11. Active energy (KWH) accuracy 1% 12. Reactive energy (KVARH) accuracy 2% 13. Power factor (PF) accuracy 1% 14. Frequency (F): measurement range 45.0~65.0,accuracy 0.5% 7

9. Panel Display Main LED Display-Six digit LED display with indicators. Current indicator for all 3 phases: A = R phase, B = S phase, C = T phase Phase voltage indicator for all 3 phases: A = R phase, B = S phase, C = T phase Line voltage indicator for all 3 phases: A = RS phase, B = ST phase, C=TR phase Active power indicator Active energy indicator: When the kwh value exceeds 99999.9, the display will show the value in two parts, alternating every 2 seconds. Reactive energy indicator: When the kvarh value exceeds 99999.9, the display will show the value in two parts, alternating every 2 seconds. Power factor indicator Frequency indicator Communication status indicator 8

10. Operation 10.01. Regular Display Mode 1. Before Power Up: Press and hold the button to clear the kwh and kvarh values and reset them to zero as the unit is powering up. Warning: This will clear all accumulated data, use only during initial installation. 2. After Power Up: Press the button to cycle between the displayed values of: A. A phase current (A) * CT B. B phase current (A) * CT C. C phase current (A) * CT D. A phase voltage (V) * PT E. B phase voltage (V) * PT F. C phase voltage (V) * PT G. AB line voltage (V) * PT H. BC line voltage (V) * PT I. AC line voltage (V) * PT J. Total active power for all three phases (KW) * PT * CT K. Total active energy for all three phases (KWH) * PT * CT L. Total reactive energy for all three phases (KVARH) * PT * CT M. Overall Power factor for all three phases (PF) N. Frequency (F) 10.02. Setting mode 9

1. Press both the buttons simultaneously to enter setting mode. 2. Press the key to save the set value and to go to the next page. The order for the pages are: A. Having all the LEDs lit at the same time helps in testing their proper functioning. B. Firmware version: r-xxxx,xxxx is version number cannot be changed. C. RS485 address: 0~254 D. BAUD RATE: 1200/ 2400/ 4800/ 9600 E. PT: 1.00~400.00, The set value will appear after 3 seconds. F. CT: 1~1000, PT * CT <= 300000 G. 5A YES: 5A CT built in, cannot be changed. H. 1P3W(single phase three wire)/ 3P3W-2CT(three phase three wire)/ 3P3W-3CT(three phase three wire)/ 3P4W (three phase four wire) 3. Press the button to change the value. 4. Press the button to move to the next digit. 10

11. Terminals 11

12. Wiring 12.01. Cable Type 1. Wire type for the voltage terminals 16 AWG or 1.25mm 2 seven core twisted pair cable attached with Y-type electrical wire terminal Y1.25-3S. 2. Wire type for the current terminals 16 AWG or 1.25mm 2 seven core twisted pair cable attached with R-type electrical wire terminal R1.25-3S. 3. Wire type for communication 24~22 AWG UL2464 shielded twisted pair computer communication cable attached with Y-type electrical wire terminal Y1.25-3S. 12.02. Wiring diagrams 12

13. Communication Protocol 13.01.Measured Parameters Address Name Description 0 (00H) or 30001 (40001) LL VR 1 (01H) or 30002 (40002) 2 (02H) or 30003 (40003) LL VS 3 (03H) or 30004 (40004) 4 (04H) or 30005 (40005) LL VT 5 (05H) or 30006 (40006) 6 (06H) or 30007 (40007) LL VRS 7 (07H) or 30008 (40008) 8 (08H) or 30009 (40009) LL VST 9 (09H) or 30010 (400010) 10 (0AH) or 30011 (40011) LL VTR 11 (0BH) or 30012 (40012) 12 (0CH) or 30013 (40013) LL IR 13 (0DH) or 30014 (40014) Length Format Min. Max. Deftault Unit 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes multiplied by PT multiplied by PT multiplied by PT multiplied by PT multiplied by PT multiplied by PT multiplied by CT 0 0 0 0 0 0 0 14000 00 14000 00 14000 00 24248 00 24248 00 24248 00 50000 00 0.1V 0.1V 0.1V 0.1V 0.1V 0.1V 0.001A Read/ Write 19

Address Name Description 14 (0EH) or 30015 (40015) LL IS 15 (0FH) or 30016 (40016) 16 (10H) or 30017 (40017) LL IT 17 (11H) or 30018 (40018) 18 (12H) or 30019 (40019) LL S 19 (13H) or 30020 (40020) 20 (14H) or 30021 (40021) LL P 21 (15H) or 30022 (40022) 22 (16H) or 30023 (40023) LL Q 23 (17H) or 30024 (40024) 24 (18H) or 30025 (40025) LL EP 25 (19H) or 30026 (40026) 26 (1AH) or 30027 (40027) LL EQ 27 (1BH) or 30028 (40028) 28 (1CH) or 30029 (40029) LL PF 29 (1DH) or 30030 (40030) Length Format Min. Max. Deftault Unit 4 bytes multiplied by CT 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes multiplied by CT multiplied by PT and CT multiplied by PT and CT multiplied by PT and CT multiplied by PT and CT multiplied by PT and CT 20 0 0 0 0 0 0 0 50000 00 50000 00 99999 9999 99999 9999 99999 9999 99999 9999 99999 9999 0.001A 0.001A 1VA 1W 1VAR 0.01 KWH 0.01 KVAR H 4 bytes 0 1000 0.001 Read/ Write / WRITE / WRITE

Address Name Description 30 (1EH) or 30031 (40031) LL F 31 (1FH) or 30032 (40032) :Low word High byte LL:Low word Low byte :High word High byte :High word Low byte Length Format Min. Max. Deftault Unit 4 bytes 450 650 0.1Hz Read/ Write 13.02.Settable Parameters Address 32 (20H) or 30033 (40033) 33 (21H) or 30034 (40034) 34 (22H) or 30035 (40035) 35 (23H) or 30036 (40036) 36 (24H) or 30037 (40037) 37 (25H) or 30038 (40038) 38 (26H) or 30039 (40039) 39 (27H) or 30040 (40040) Name Firmware Ver. Address Baud Rate (bps) Description PME-1230 Version RS-485 Address Baud Rate Length Format 2bytes Min. Max. Deftau -lt 229X Unit 2bytes 0 254 1 1 2bytes PT PT Rate 2bytes CT CT Rate 2bytes CT Fn Internal 5A CT or External DAE CT Wiring npnw 2bytes Version Version string 0:9600 1:4800 2:2400 3:1200 PT*CT<= 300000 PT*CT<= 300000 0 3 0 1 1 40000 100 0.01 1 1000 1 1 2bytes 0 1:1P3W 2:3P3W -2CT 3:3P3W- 3CT 4:3P4W 1 4 4 1 2bytes 1230 Read/ Write / WRITE / WRITE / WRITE / WRITE / WRITE 21

13.03.Read Command Byte 0 PME-1230 address Byte 1 3 Byte 2 0 Byte 3 Byte 4 0 Byte 5 Byte 6 Byte 7 Examples: Read VR Parameter Read VS Parameter Read PT Parameters register address number of data words to read CRC (low byte) CRC (high byte) 1, 3, 0, 0, 0, 2, CRC, CRC 1, 3, 0, 2, 0, 2, CRC, CRC 1, 3, 0, 35, 0, 1, CRC, CRC 13.04.Read Response Byte 0 PME-1230 address Byte 1 3 Byte 2 Byte 3 Byte 4 Byte 3+N Byte 4+N Examples: Returned VR Value Returned IR Value Returned PT Value Number of bytes returned Data (high byte) Data (low byte) CRC (low byte) CRC (high byte) 1, 3, 4, XX, XX, XX, XX, CRC, CRC 1, 3, 4, XX, XX, XX, XX, CRC, CRC 1, 3, 2, XX, XX, CRC, CRC 22

13.05.Write Command Byte 0 PME-1230 address Byte 1 16 Byte 2 0 Byte 3 register address Byte 4 0 Byte 5 Byte 6 Byte 7 Byte 8 Byte 7+N Byte 8+N Examples: Write EP Value Write EQ Value Write address Value number of data words to write number of data bytes to write Data (high byte) Data (low byte) CRC (low byte) CRC (high byte) 1,16,0,24,0,2,4,0,100,0,0,CRC,CRC 1,16,0,26,0,2,4,0,100,0,0,CRC,CRC 1,16,0,33,0,1,2,0,2,CRC,CRC 23

13.06.Write Response Byte 0 PME-1230 address Byte 1 16 Byte 2 0 Byte 3 Byte 4 0 Byte 5 Byte 6 Byte 7 Examples: Returned EP Returned EQ Returned address register address number of data words to write CRC (low byte) CRC (high byte) 1, 16, 0, 24, 0, 2, CRC, CRC 1, 16, 0, 26, 0, 2, CRC, CRC 1, 16, 0, 33, 0, 1, CRC, CRC 24

14.Q&A Q1: What is the most common error when wiring for 3p3w with 2 CTs? A1: (1) Please take note of the wiring diagram for 3p3w with 2 CTs as shown below, especially the portion where the VN needs to be connected to phase B. (2) The default setting is 3P4W. Please change the setting 3P3W in the setting mode when used for 3P3W. Q2: Why are there strange and conflicting readings for the current, power and pf? A2: (1) Check that the voltage and current phases are connected properly: (a) Check that the wiring for the phase currents are in the same direction. (b) Check that the voltage phases correspond to their current phases, e.g. Phase A voltage is matched with Phase B current. (2) The markings for the existing wiring is incorrect or has been jumbled. 25

(3) Compare with a high accuracy meter to see if the readings are indeed correct. Q3: The displayed voltage is correct, but the value of the current is zero. Why is this so? A3: (1) Make sure that there is an active load and that it has not been turned off. (2) Check that the load circuit loop has not been broken or that a fuse has not been blown. (3) Make sure that the voltage and current phases are matched. (4) Check that the CT is not damaged. Q4: The main LED display is showing nothing even when connected to the proper power supply. A4: (1) Check that the proper voltage is applied, i.e. 110VAC is supplied to the 110VAC auxiliary power terminals or that 220VAC is supplied to the 220VAC auxiliary power terminals. (2) Use a multi-meter to check that the auxiliary voltage is supplied and is within the operating range, it should not be lower than 94V for the unit to operate, and it should not be greater than 253V otherwise the unit will be damaged. (3) Visually check the enclosure for cracks and burn marks, and smell for burned circuits. Q5: Unstable or no communication. A5: (1) Check that the communication network is not in the form of a star or a branching network. (2) Check that the communications converter is working properly and that there are no short or open circuit in the communication network. (3) Make sure that the address and baud rate setting correspond to the central host software, and that the address of each meter on the same network is unique and 26

there are no duplications, and that all the meters are set to the same baud rate. (4) Check that the RS485 wiring polarity is not reversed on any of the connected devices. (5) Make sure that the RS485 communications network has not been connected into a closed loop. (6) Make sure that the total wiring length for the entire network is not more than 1000 meters and that the number of meters on each network is not more than 32. Q6: Usage notes regarding PTs and CTs: A6: While the PT is measuring the voltage, their terminals may not be short-circuited. While the CT is measuring the current, their terminals may not be open-circuited. Q7: Why does the meter not provide a given function? A7: (1) Check that the meter model includes the given function. (2) Different models provide different functions, check that the correct model has been purchased. Q8: Why are some parameters such as the displayed voltage and current so conspicuously incorrect, e.g. Phase B voltage is exceedingly large. A8: (1) Check that the wiring is done properly according to the recommended wiring diagrams. (2) Connect the wiring of the meter according to the actual system configuration, and set the software settings accordingly, e.g. When the system is 3p4w, then the wiring should be 3p4w and the meter software setting set to 3p4w. Note: Take care to make sure that the meter software settings for the various modes are consistent with the actual configuration, incorrect settings can result in communications failure, false readings for the voltage, current, kwh and the other parameters. 27

PME-1230 三相多功能電表使用說明書 28

目錄 1. 產品簡介...30 2. 特色...30 3. 注意事項...30 4. 產品規格...31 5. 產品尺寸...31 6. 安裝方式 ( 盤面型 )...32 7. 數值顯示...33 8. 量測範圍及精度...34 9. 面板顯示...35 10. 操作方式...36 11. 接點說明...37 12. 接線說明...38 13. 通信協定...45 14.Q&A...51 29

1. 產品簡介本產品提供能源管理者一項創新而完美的能源管理工具, 它可使用於監督電力消耗分析及分算各製程或部門用電費用, 也同樣適用於能源電力調查等應用 PME-1230 具備量測三相電壓電流功率功因電度量測功能本產品體積極為精巧面積小而深度淺因此完全不佔用盤體空間最適合分電盤安裝應用此產品為本公司第三代技術 ; 完全採用電子式電度表技術研製, 因此具備極佳的精度水準, 且可在 5mA 起即可進入有效量測範圍, 同時具有 Modbus RS485 通信功能, 以利與電腦自動抄表進行資料蒐集集監控系統整合特別是用戶們希望掌握其電力節能應用, 本產品將是最佳的住戶用能源管理利器 2. 特色 1. 體積輕薄短小 2. 適用於各型分電盤 3. 通信協定 :Modbus RTU/ 通信界面 :RS485 4. 可量測電壓 / 電流 / 有效功率 / 有效電度 / 無效電度 / 功率因素 / 頻率 5. 高精度 3. 注意事項當使用者拿到產品機種時, 請參考下列步驟, 以確保使用安全 1. 打開包裝後, 先確認產品是否因運送途中有所損壞 2. 檢查並確定印在外箱及機身的銘牌標籤, 是否相符合 3. 本產品適用於一般配電盤 4. 本產品無針對出風口或散熱之特別需求 5. 接線方式務必依照接線說明圖示配線 6. 慎防水漬避免積塵 7. 安裝本產品時, 應一併安裝全極斷電裝置 30

8. CLASS II 雙重絕緣警告! 安裝時, 將高壓電源關閉, 慎防觸電 4. 產品規格 1. 量測電壓 :1p3w/3p3w/3p4w,80V~350VAC 2. 量測電流 :5mA~5A 3. 量測頻率 :45 至 65Hz 4. 工作電源 :110 或 220VAC,±15%,50 及 60Hz 5. 消耗功率 :5VA 6. 操作溫度 : 攝氏 -10~70 度 7. 相對濕度 : 0 至 90% RH 8. 尺寸重量 : 110mm(W)x50mm(H)x112mm(D), 內建 CT 重 :450g 9. 安裝方式 : Din 96x48 panel mount 10. 數據通信 : Modbus RTU,RS485 預設 Baud rate:9600bps ( 可設 ) 資料格式 : 8/N/1 支援 Baud rate: 1200/2400/4800/9600bps ( 按鍵或通訊設定 ) 11. 精度 :CLASS1 5. 產品尺寸 31

6. 安裝方式 ( 盤面型 ) 1. 裁切一長方形的框架, 供本產品置入 2. 先把固定夾卸下後, 將本產品由長方形框架前方放入, 再往後推進 3. 最後, 在長方形框架後方, 使用固定夾藉以固定本產品 32

7. 數值顯示 7.01. 基本數值顯示 1. 電流 (A): 最小顯示單位 0.001 A 2. 相 / 線電壓 (V): 最小顯示單位 0.1 V 3. 有效功率 (KW): 最小顯示單位 0.001 KW 4. 有效電度 (KWH): 最小顯示單位 0.1 KWH 5. 無效電度 (KVARH): 最小顯示單位 0.1 KVARH 6. 功率因素 (PF): 最小顯示單位 0.001 7. 頻率 (F): 最小顯示單位 0.1Hz 7.02. 設定數值顯示 1. LED 全亮, 以利檢驗 LED 是否正常 2. 版本編號 :r-xxxx,xxxx= 軟體版本 3. 通訊位址 :0~254 4. BAUD RATE:1200/2400/4800/9600 5. PT:1.00~400.00 6. CT:1~1000 7. 5A YES: 內建 5A CT 8. 1P3W( 單相三線 )/3P3W-2CT( 三相三線 )/3P3W-3CT ( 三相三線 )/3P4W( 三相四線 ) 7.03.LED 燈顯示 1. A: 電流值指示 LED 2. V: 相 / 線電壓值指示 LED 3. KW: 有效功率值指示 LED 4. KWH: 有效電度累計值指示 LED 5. KVARH: 無效電度累計值指示 LED 6. PF: 功率因素值指示 LED 7. TX: 通訊發送狀態指示 LED 8. RX: 通訊接收狀態指示 LED 33

8. 量測範圍及精度 1. A 相電流 (A): 量測範圍 5mA~5A, 精度 0.5% 2. B 相電流 (A): 量測範圍 5mA~5A, 精度 0.5% 3. C 相電流 (A): 量測範圍 5mA~5A, 精度 0.5% 4. A 相電壓 (V): 量測範圍 AC 80V~AC 350V, 精度 0.5% 5. B 相電壓 (V): 量測範圍 AC 80V~AC 350V, 精度 0.5% 6. C 相電壓 (V): 量測範圍 AC 80V~AC 350V, 精度 0.5% 7. AB 線電壓 (V): 量測範圍 AC 138V~AC 600V, 精度 0.5% 8. BC 線電壓 (V): 量測範圍 AC 138V~AC 600V, 精度 0.5% 9. CA 線電壓 (V): 量測範圍 AC 138V~AC 600V, 精度 0.5% 10. 有效功率 (KW) 精度 1% 11. 有效電度 (KWH) 精度 1% 12. 無效電度 (KVARH) 精度 2% 13. 功率因素 (PF) 精度 1% 14. 頻率 (F): 量測範圍 45.0~65.0, 精度 0.5% 34

9. 面板顯示 6 位數面板數值顯示器及項目指示燈號電流顯示, 共有三相 :A = R 相,B = S 相,C = T 相相電壓顯示, 共有三相 : A = R 相,B = S 相,C = T 相線電壓顯示, 共有三相 : A = RS 相,B = ST 相,C=TR 相有效功率顯示有效電度顯示 : 電度超過 99999.9 時, 會分二頁顯示,2 秒換頁一次無效電度顯示 : 電度超過 99999.9 時, 會分二頁顯示,2 秒換頁一次功率因數顯示頻率顯示通訊狀態指示燈 35

10. 操作方式 10.01. 基本模式 1. 開機前 : 先按, 再送工作電源可將 KWH 值和 KVARH 值清為 0 警告 : 此動作可將資料清除, 僅作為初始安裝使用 2. 開機後 : 按可切換顯示項目, 依序為 A. A 相電流 (A) * CT B. B 相電流 (A) * CT C. C 相電流 (A) * CT D. A 相電壓 (V) * PT E. B 相電壓 (V) * PT F. C 相電壓 (V) * PT G. AL 線電壓 (V) * PT H. BL 線電壓 (V) * PT I. CL 線電壓 (V) * PT J. 合相有效功率 (KW) * PT * CT K. 合相有效電度 (KWH) * PT * CT L. 合相無效電度 (KVARH) * PT * CT M. 合相功率因素 (PF) N. 頻率 (F) 10.02. 設定模式 1. 同時按下和二鍵, 可進入設定模式 2. 按鍵可儲存設定值, 並切換顯示項目, 依序為 : A. LED 全亮,, 以利檢驗 LED 是否正常 36

B. 版本編號 :r-xxxx,xxxx= 軟體版本, 不可變更數值 C. 通訊位址 :0~254 D. BAUD RATE:1200/2400/4800/9600 E. PT:1.00~400.00, 等待三秒後會顯示設定值 F. CT:1~1000,PT * CT <= 300000 G. 5A YES: 內建 5A CT, 不可變更數值 H. 1P3W( 單相三線 )/3P3W-2CT( 三相三線 )/3P3W-3CT ( 三相三線 )/3P4W( 三相四線 ) 3. 按可調整設定值 4. 按可位移設定值 11. 接點說明 37

12. 接線說明 12.01. 線材 1. 電壓端子線材規格 : 16 AWG 或 1.25mm 2 七股絞線, 並須壓接 Y 型接線端子 Y1.25-3S 2. 電流端子線材規格 : 16 AWG 或 1.25mm 2 七股絞線, 並須壓接 R 型接線端子 R1.25-3S 3. 通訊線材規格 : 24~22 AWG UL2464 隔離對絞電腦通訊線, 並須壓接 Y 型接線端子 Y1.25-3S 12.02 接線圖 38

13. 通信協定 13.01. 基本量測值 Address Name Description 0 (00H) or 30001 (40001) LL VR 1 (01H) or 30002 (40002) 2 (02H) or 30003 (40003) LL VS 3 (03H) or 30004 (40004) 4 (04H) or 30005 (40005) LL VT 5 (05H) or 30006 (40006) 6 (06H) or 30007 (40007) LL VRS 7 (07H) or 30008 (40008) 8 (08H) or 30009 (40009) LL VST 9 (09H) or 30010 (400010) 10 (0AH) or 30011 (40011) LL VTR 11 (0BH) or 30012 (40012) 12 (0CH) or 30013 (40013) LL IR 13 (0DH) or 30014 (40014) Length Format Min. Max. Deftault Unit 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 CT 0 14000 00 14000 00 14000 00 24248 00 24248 00 24248 00 50000 00 0.1V 0.1V 0.1V 0.1V 0.1V 0.1V 0.001A Read/ Write 45

Address Name Description 14 (0EH) or 30015 (40015) LL IS 15 (0FH) or 30016 (40016) 16 (10H) or 30017 (40017) LL IT 17 (11H) or 30018 (40018) 18 (12H) or 30019 (40019) LL S 19 (13H) or 30020 (40020) 20 (14H) or 30021 (40021) LL P 21 (15H) or 30022 (40022) 22 (16H) or 30023 (40023) LL Q 23 (17H) or 30024 (40024) 24 (18H) or 30025 (40025) LL EP 25 (19H) or 30026 (40026) 26 (1AH) or 30027 (40027) LL EQ 27 (1BH) or 30028 (40028) 28 (1CH) or 30029 (40029) LL PF 29 (1DH) or 30030 (40030) Length Format Min. Max. Deftault Unit 4 bytes 乘 CT 0 4 bytes 乘 CT 0 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes 乘 PTCT 乘 PTCT 乘 PTCT 乘 PTCT 乘 PTCT 0 0 0 0 0 50000 00 50000 00 99999 9999 99999 9999 99999 9999 99999 9999 99999 9999 0.001A 0.001A 1VA 1W 1VAR 0.01 KWH 0.01 KVAR H 4 bytes 0 1000 0.001 Read/ Write / WRITE / WRITE 46

Address Name Description 30 (1EH) or 30031 (40031) LL F 31 (1FH) or 30032 (40032) :Low word High byte LL:Low word Low byte :High word High byte :High word Low byte Length Format Min. Max. Deftault Unit 4 bytes 450 650 0.1Hz Read/ Write 13.02. 設定值 Address 32 (20H) or 30033 (40033) 33 (21H) or 30034 (40034) 34 (22H) or 30035 (40035) 35 (23H) or 30036 (40036) 36 (24H) or 30037 (40037) 37 (25H) or 30038 (40038) 38 (26H) or 30039 (40039) 39 (27H) or 30040 (40040) Name Firmware Ver. Address Description PME-1230 Version RS-485 Address Baud Rate Baud Rate Length Format Min. Max. Deftau -lt 2bytes 229X Unit 2bytes 0 254 1 1 2bytes PT PT Rate 2bytes CT CT Rate 2bytes CT Fn Internal 5A CT or External DAE CT Wiring npnw 2bytes Version Version String 0:9600 1:4800 2:2400 3:1200 PT*CT<= 300000 PT*CT<= 300000 0 3 0 1 1 40000 100 0.01 1 1000 1 1 2bytes 0 1:1P3W 2:3P3W-2 CT 3:3P3W-3 CT 4:3P4W 1 4 4 1 2bytes 1230 Read/ Write / WRITE / WRITE / WRITE / WRITE / WRITE 47

13.03. 讀取通訊命令 Byte 0 PME-1230 address Byte 1 3 Byte 2 0 Byte 3 register address Byte 4 0 Byte 5 Byte 6 Byte 7 Examples: Read VR Parameter Read VS Parameter Read PT Parameters 13.04. 讀取接收命令 Byte 0 number of data words to read CRC (low byte) CRC (high byte) 1, 3, 0, 0, 0, 2, CRC, CRC 1, 3, 0, 2, 0, 2, CRC, CRC 1, 3, 0, 35, 0, 1, CRC, CRC PME-1230 address Byte 1 3 Byte 2 Byte 3 Byte 4 Byte 3+N Byte 4+N Examples: Returned VR Value Returned IR Value Returned PT Value Number of bytes returned Data (high byte) Data (low byte) CRC (low byte) CRC (high byte) 1, 3, 4, XX, XX, XX, XX, CRC, CRC 1, 3, 4, XX, XX, XX, XX, CRC, CRC 1, 3, 2, XX, XX, CRC, CRC 48

13.05. 寫入通訊命令 Byte 0 Byte 1 16 Byte 2 0 Byte 3 Byte 4 0 Byte 5 Byte 6 Byte 7 Byte 8 Byte 7+N Byte 8+N Examples: Write EP Value Write EQ Value Write address Value PME-1230 address register address number of data words to write number of data bytes to write Data (high byte) Data (low byte) CRC (low byte) CRC (high byte) 1,16,0,24,0,2,4,0,100,0,0,CRC,CRC 1,16,0,26,0,2,4,0,100,0,0,CRC,CRC 1,16,0,33,0,1,2,0,2,CRC,CRC 49

13.06. 寫入接收命令 Byte 0 PME-1230 address Byte 1 16 Byte 2 0 Byte 3 register address Byte 4 0 Byte 5 Byte 6 Byte 7 Examples: Returned EP Returned EQ Returned address number of data words to write CRC (low byte) CRC (high byte) 1, 16, 0, 24, 0, 2, CRC, CRC 1, 16, 0, 26, 0, 2, CRC, CRC 1, 16, 0, 33, 0, 1, CRC, CRC 50

14.Q&A Q1 3P3W / 2CT 之接法, 輸入量測電壓端 B 相經常接錯? Ans:(1) 請詳讀操作手冊 3P3W 接線說明 ( 參閱下圖 ) 及注意事項 (2) 本機出廠之設定皆為 3P4W, 如需 3P3W 之需求時, 請務必進入設定模式改為 3P3W Q2 3 相電流 / 功率 / 功因數據讀出顯示不協調? Ans:(1) 電壓電流相序是否接錯 (a) 電流接線方向錯誤 (b) R(A) S (B) T (C) 三相不對應, 例如 : R( A) 相電壓對應 S ( B ) 相電流 (2) 現場舊有配盤系統電路電壓電流之 RST (ABC ) 相序原先已錯亂 (3) 用高精密電錶比對 Q3 DISPLAY 有正常電壓數據, 電流值一直為零? 51

Ans:(1) 負載是否有啟動或已停機 (2) 檢查電流迴路有無斷路, 如高速保險絲是否正常 (3) 請再確認電壓電流量測點之位置, 是否為確認量測對象 (4) 檢查比流器是否損壞 Q4 DISPLAY 完全無顯示動作 ( 在工作電源正常連結下 )? Ans:(1) 檢查工作電源線是否未接好, 例如 : 0 V 對 110V 為 110V;0 V 對 220 V 為 220 V (2) 用三用電錶量測工作電源之電壓端是否有帶電 ; 供電電源的輸出功率是否滿足需求 ; 工作電壓是否低於 94 V, 或高於 253 V 已損毀 (3) 檢視外殼是否有燒焦痕跡或焦味 Q5 通訊不穩定或無通訊? Ans:(1) 檢查區域接法是否為星狀或樹狀 (2) 通訊轉換器是否正常或通訊迴路是否開路或短路 (3) 查看電錶設置地址鮑率是否與系統軟體對應, 連接在同一通訊道上的所有電錶要保證地址沒有重疊鮑率一致 (4) 檢查 RS485 正負是否接反 (5) 通訊迴路不可接成環狀 (6) 單一迴路下接線總長度不可大於 1000M, 設備總結點數不可大於 32 Q6 PT 和 CT 應注意事項? Ans:PT 在量測電壓時, 腳位不可短路 CT 在量測電流時, 腳位不可開路 Q7 電錶未能顯示電錶未能顯示所需功能? Ans:(1) 查看此型號電表是否包含此項功能 (2) 所訂購的電錶應了解其所含功能, 型號不同功能不 52

同 Q8 電壓電壓電流顯示數值有部分明顯錯誤電流顯示數值有部分明顯錯誤 ( 例如 :B 相電壓過大 )? Ans:(1) 可能為接線方式設置問題 (2) 將電壓或電流的接線方式, 按系統的實際接線, 在電表設置中改為正確 P.S. 請謹慎小心使用設定模式中各項功能, 如設定錯誤將會有通訊電壓電流顯示不正確, 電度累積不正確 53

PME-1230 三相多功能电表使用说明书 54

目录 1. 产品简介...56 2. 特色...56 3. 注意事项...56 4. 产品规格...57 5. 产品尺寸...57 6. 安装方式 ( 盘面型 )...58 7. 数值显示...59 8. 量测范围及精度...60 9. 面板显示...61 10. 操作方式...62 11. 接点说明...63 12. 接线说明...64 13. 通信协定...71 14.Q&A...77 55

1. 产品简介本产品提供能源管理者一项创新而完美的能源管理工具, 它可使用于监督电力消耗分析及分算各制程或部门用电费用, 也同样适用于能源电力调查等应用 PME-1230 具备量测三相电压电流功率功因电度量测功能本产品体积极为精巧面积小而深度浅因此完全不占用盘体空间最适合分电盘安装应用此产品为本公司第三代技术 ; 完全采用电子式电度表技术研制, 因此具备极佳的精度水平, 且可在 5mA 起即可进入有效量测范围, 同时具有 Modbus RS485 通信功能, 以利与计算机自动抄表进行数据搜集集监控系统整合特别是用户们希望掌握其电力节能应用, 本产品将是最佳的住户用能源管理利器 2. 特色 1. 体积轻薄短小 2. 适用于各型分电盘 3. 通信协议 :Modbus RTU/ 通信界面 :RS485 4. 可量测电压 / 电流 / 有效功率 / 有效电度 / 无效电度 / 功率因素 / 频率 5. 高精度 3. 注意事项当使用者拿到产品机种时, 请參考下列步骤, 以确保使用安全 1. 打开包装后, 先确认产品是否因运送途中有所损坏 2. 检查并确定印在外箱及机身的铭牌标签, 是否相符合 3. 本产品适用于一般配电盘 4. 本产品无针对出风口或散热之特别需求 5. 接线方式务必依照接线说明图示配线 6. 慎防水渍避免积尘 56

7. 安装本产品时, 应一并安装全极断电装置 8. CLASS II 双重绝缘警告! 安装时, 将高压电源关闭, 慎防触电 4. 产品规格 1. 量测电压 :1p3w/3p3w/3p4w,80V~350VAC 2. 量测电流 :5mA~5A 3. 量测频率 :45 至 65Hz 4. 工作电源 :110 或 220VAC,±15%,50 及 60Hz 5. 消耗功率 :5VA 6. 操作温度 : 摄氏 -10~70 度 7. 相对湿度 : 0 至 90% RH 8. 尺寸重量 : 110mm(W)x50mm(H)x112mm(D), 内建 CT 重 :450g 9. 安装方式 : Din 96x48 panel mount 10. 数据通信 : Modbus RTU,RS485 预设 Baud rate:9600bps ( 可设 ) 数据格式 : 8/N/1 支援 Baud rate: 1200/2400/4800/9600bps ( 按键或通讯设定 ) 11. 精度 :CLASS1 5. 产品尺寸 57

6. 安装方式 ( 盘面型 ) 1. 裁切一长方形的框架, 供本产品置入 2. 先把固定夹卸下后, 将本产品由长方形框架前方放入, 再往后推进 3. 最后, 在长方形框架后方, 使用固定夹藉以固定本产品 58

7. 数值显示 7.01. 基本数值显示 1. 电流 (A): 最小显示单位 0.001 A 2. 相 / 线电压 (V): 最小显示单位 0.1 V 3. 有效功率 (KW): 最小显示单位 0.001 KW 4. 有效电度 (KWH): 最小显示单位 0.1 KWH 5. 无效电度 (KVARH): 最小显示单位 0.1 KVARH 6. 功率因素 (PF): 最小显示单位 0.001 7. 频率 (F): 最小显示单位 0.1Hz 7.02. 设定数值显示 1. LED 全亮, 以利检验 LED 是否正常 2. 版本编号 :r-xxxx,xxxx= 软件版本 3. 通讯地址 :0~254 4. BAUD RATE:1200/2400/4800/9600 5. PT:1.00~400.00 6. CT:1~1000 7. 5A YES: 内建 5A CT 8. 1P3W( 单相三线 )/3P3W-2CT( 三相三线 )/3P3W-3CT ( 三相三线 )/3P4W( 三相四线 ) 7.03.LED 灯显示 1. A: 电流值指示 LED 2. V: 相 / 线电压值指示 LED 3. KW: 有效功率值指示 LED 4. KWH: 有效电度累计值指示 LED 5. KVARH: 无效电度累计值指示 LED 6. PF: 功率因素值指示 LED 7. TX: 通讯发送状态指示 LED 8. RX: 通讯接收状态指示 LED 59

8. 量测范围及精度 1. A 相电流 (A): 量测范围 5mA~5A, 精度 0.5% 2. B 相电流 (A): 量测范围 5mA~5A, 精度 0.5% 3. C 相电流 (A): 量测范围 5mA~5A, 精度 0.5% 4. A 相电压 (V): 量测范围 AC 80V~AC 350V, 精度 0.5% 5. B 相电压 (V): 量测范围 AC 80V~AC 350V, 精度 0.5% 6. C 相电压 (V): 量测范围 AC 80V~AC 350V, 精度 0.5% 7. AB 线电压 (V): 量测范围 AC 138V~AC 600V, 精度 0.5% 8. BC 线电压 (V): 量测范围 AC 138V~AC 600V, 精度 0.5% 9. CA 线电压 (V): 量测范围 AC 138V~AC 600V, 精度 0.5% 10. 有效功率 (KW) 精度 1% 11. 有效电度 (KWH) 精度 1% 12. 无效电度 (KVARH) 精度 2% 13. 功率因素 (PF) 精度 1% 14. 频率 (F): 量测范围 45.0~65.0, 精度 0.5% 60

9. 面板显示 6 位数面板数值显示器及项目指示灯号电流显示, 共有三相 :A = R 相,B = S 相,C = T 相相电压显示, 共有三相 : A = R 相,B = S 相,C = T 相线电压显示, 共有三相 : A = RS 相,B = ST 相,C=TR 相有效功率显示有效电度显示 : 电度超过 99999.9 时, 会分二页显示,2 秒换页一次无效电度显示 : 电度超过 99999.9 时, 会分二页显示,2 秒换页一次功率因素显示频率显示通讯状态指示灯 61

10. 操作方式 10.01. 基本模式 1. 开机前 : 先按, 再送工作电源可将 KWH 值和 KVARH 值清为 0 警告 : 此动作可将数据清除, 仅作为初始安装使用 2. 开机后 : 按可切换显示项目, 依序为 A. A 相电流 (A) * CT B. B 相电流 (A) * CT C. C 相电流 (A) * CT D. A 相电压 (V) * PT E. B 相电压 (V) * PT F. C 相电压 (V) * PT G. AL 线电压 (V) * PT H. BL 线电压 (V) * PT I. CL 线电压 (V) * PT J. 合相有效功率 (KW) * PT * CT K. 合相有效电度 (KWH) * PT * CT L. 合相无效电度 (KVARH) * PT * CT M. 合相功率因素 (PF) N. 频率 (F) 10.02. 设定模式 1. 同时按下和二键, 可进入设定模式 2. 按键可储存设定值, 并切换显示项目, 依序为 : A. LED 全亮, 以利检验 LED 是否正常 62

B. 版本编号 :r-xxxx,xxxx= 软件版本, 不可变更数值 C. 通讯地址 :0~254 D. BAUD RATE:1200/2400/4800/9600 E. PT:1.00~400.00, 等待三秒后会显示设定值 F. CT:1~1000,PT * CT <= 300000 G. 5A YES: 内建 5A CT, 不可变更数值 H. 1P3W( 单相三线 )/3P3W-2CT( 三相三线 )/3P3W-3CT ( 三相三线 )/3P4W( 三相四线 ) 3. 按可调整设定值 4. 按可位移设定值 11. 接点说明 63

12. 接线说明 12.01. 线材 1. 电压端子线材规格 : 16 AWG 或 1.25mm 2 七股绞线, 并须压接 Y 型接线端子 Y1.25-3S 2. 电流端子线材规格 : 16 AWG 或 1.25mm 2 七股绞线, 并须压接 R 型接线端子 R1.25-3S 3. 通讯线材规格 : 24~22 AWG UL2464 隔离对绞计算机通讯线, 并须压接 Y 型接线端子 Y1.25-3S 12.02 接线图 64

13. 通信协议 13.01. 基本量测值 Address Name Description 0 (00H) or 30001 (40001) LL VR 1 (01H) or 30002 (40002) 2 (02H) or 30003 (40003) LL VS 3 (03H) or 30004 (40004) 4 (04H) or 30005 (40005) LL VT 5 (05H) or 30006 (40006) 6 (06H) or 30007 (40007) LL VRS 7 (07H) or 30008 (40008) 8 (08H) or 30009 (40009) LL VST 9 (09H) or 30010 (400010) 10 (0AH) or 30011 (40011) LL VTR 11 (0BH) or 30012 (40012) 12 (0CH) or 30013 (40013) LL IR 13 (0DH) or 30014 (40014) Length Format Min. Max. Deftault 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 PT 0 4 bytes 乘 CT 0 14000 00 14000 00 14000 00 24248 00 24248 00 24248 00 50000 00 Unit 0.1V 0.1V 0.1V 0.1V 0.1V 0.1V 0.001A Read/ Write 71

Address Name Description 14 (0EH) or 30015 (40015) LL IS 15 (0FH) or 30016 (40016) 16 (10H) or 30017 (40017) LL IT 17 (11H) or 30018 (40018) 18 (12H) or 30019 (40019) LL S 19 (13H) or 30020 (40020) 20 (14H) or 30021 (40021) LL P 21 (15H) or 30022 (40022) 22 (16H) or 30023 (40023) LL Q 23 (17H) or 30024 (40024) 24 (18H) or 30025 (40025) LL EP 25 (19H) or 30026 (40026) 26 (1AH) or 30027 (40027) LL EQ 27 (1BH) or 30028 (40028) 28 (1CH) or 30029 (40029) LL PF 29 (1DH) or 30030 (40030) Length Format Min. Max. Deftault 4 bytes 乘 CT 0 4 bytes 乘 CT 0 4 bytes 4 bytes 4 bytes 4 bytes 4 bytes 乘 PTCT 乘 PTCT 乘 PTCT 乘 PTCT 乘 PTCT 0 0 0 0 0 50000 00 50000 00 99999 9999 99999 9999 99999 9999 99999 9999 99999 9999 Unit 0.001A 0.001A 1VA 1W 1VAR 0.01 KWH 4 bytes 0 1000 0.001 Read/ Write / WRITE 0.01 / KVAR WRITE H 72

Address Name Description 30 (1EH) or 30031 (40031) LL F 31 (1FH) or 30032 (40032) :Low word High byte LL:Low word Low byte :High word High byte :High word Low byte Length Format Min. Max. Deftault Unit 4 bytes 450 650 0.1Hz Read/ Write 13.02. 设定值 Address 32 (20H) or 30033 (40033) 33 (21H) or 30034 (40034) 34 (22H) or 30035 (40035) 35 (23H) or 30036 (40036) 36 (24H) or 30037 (40037) 37 (25H) or 30038 (40038) 38 (26H) or 30039 (40039) 39 (27H) or 30040 (40040) Name Firmware Ver. Address Description PME-1230 Version RS-485 Address Baud Rate Baud Rate Length Format Min. Max. 2bytes 73 Deftault 229X Unit 2bytes 0 254 1 1 2bytes PT PT Rate 2bytes CT CT Rate 2bytes CT Fn Internal 5A CT or External DAE CT Wiring npnw 2bytes Version Version String 0:9600 1:4800 2:2400 3:1200 PT*CT<= 300000 PT*CT<= 300000 0 3 0 1 1 4000 0 100 0.01 1 1000 1 1 2bytes 0 1:1P3W 2:3P3W- 2CT 3:3P3W- 3CT 4:3P4W 1 4 4 1 2bytes 1230 Read/ Write / WRITE / WRITE / WRITE / WRITE / WRITE

13.03. 读取通讯命令 Byte 0 PME-1230 address Byte 1 3 Byte 2 0 Byte 3 register address Byte 4 0 Byte 5 Byte 6 Byte 7 Examples: Read VR Parameter Read VS Parameter Read PT Parameters 13.04. 读取接收命令 Byte 0 number of data words to read CRC (low byte) CRC (high byte) 1, 3, 0, 0, 0, 2, CRC, CRC 1, 3, 0, 2, 0, 2, CRC, CRC 1, 3, 0, 35, 0, 1, CRC, CRC PME-1230 address Byte 1 3 Byte 2 Byte 3 Byte 4 Byte 3+N Byte 4+N Examples: Returned VR Value Returned IR Value Returned PT Value Number of bytes returned Data (high byte) Data (low byte) CRC (low byte) CRC (high byte) 1, 3, 4, XX, XX, XX, XX, CRC, CRC 1, 3, 4, XX, XX, XX, XX, CRC, CRC 1, 3, 2, XX, XX, CRC, CRC 74

13.05. 写入通讯命令 Byte 0 Byte 1 16 Byte 2 0 Byte 3 Byte 4 0 Byte 5 Byte 6 Byte 7 Byte 8 Byte 7+N Byte 8+N Examples: Write EP Value Write EQ Value Write address Value PME-1230 address register address number of data words to write number of data bytes to write Data (high byte) Data (low byte) CRC (low byte) CRC (high byte) 1,16,0,24,0,2,4,0,100,0,0,CRC,CRC 1,16,0,26,0,2,4,0,100,0,0,CRC,CRC 1,16,0,33,0,1,2,0,2,CRC,CRC 75

13.06. 写入接收命令 Byte 0 PME-1230 address Byte 1 16 Byte 2 0 Byte 3 register address Byte 4 0 Byte 5 Byte 6 Byte 7 Examples: Returned EP Returned EQ Returned address number of data words to write CRC (low byte) CRC (high byte) 1, 16, 0, 24, 0, 2, CRC, CRC 1, 16, 0, 26, 0, 2, CRC, CRC 1, 16, 0, 33, 0, 1, CRC, CRC 76

14.Q&A Q1 3P3W / 2CT 之接法, 输入量测电压端 B 相经常接错? Ans:(1) 请详读操作手册 3P3W 接线说明 ( 参阅下图 ) 及注意事项 (2) 本机出厂之设定皆为 3P4W, 如需 3P3W 之需求时, 请务必进入设定模式改为 3P3W Q2 3 相电流 / 功率 / 功因数据读出显示不协调? Ans:(1) 电压电流相序是否接错 (a) 电流接线方向错误 (b) R(A) S (B) T (C) 三相不对应, 例如 : R( A) 相电压对应 S ( B ) 相电流 (2) 现场旧有配盘系统电路电压电流之 RST (ABC ) 相序原先已错乱 (3) 用高精密电表比对 Q3 DISPLAY 有正常电压数据, 电流值一直为零? 77

Ans:(1) 负载是否有启动或已停机 (2) 检查电流回路有无断路, 如高速保险丝是否正常 (3) 请再确认电压电流量测点之位置, 是否为确认量测对象 (4) 检查比流器是否损坏 Q4 DISPLAY 完全无显示动作 ( 在工作电源正常连结下 )? Ans:(1) 检查工作电源线是否未接好, 例如 : 0 V 对 110V 为 110V;0 V 对 220 V 为 220 V (2) 用三用电表量测工作电源之电压端是否有带电 ; 供电电源的输出功率是否满足需求 ; 工作电压是否低于 94 V, 或高于 253 V 已损毁 (3) 检视外壳是否有烧焦痕迹或焦味 Q5 通讯不稳定或无通讯? Ans:(1) 检查区域接法是否为星状或树状 (2) 通讯转换器是否正常或通讯回路是否开路或短路 (3) 查看电表设置地址鲍率是否与系统软件对应, 连接在同一通讯道上的所有电表要保证地址没有重迭鲍率一致 (4) 检查 RS485 正负是否接反 (5) 通讯回路不可接成环状 (6) 单一回路下接线总长度不可大于 1000M, 设备总结点数不可大于 32 Q6 PT 和 CT 应注意事项? Ans:PT 在量测电压时, 脚位不可短路 CT 在量测电流时, 脚位不可开路 Q7 电表未能显示所需功能? Ans:(1) 查看此型号电表是否包含此项功能 (2) 所订购的电表应了解其所含功能, 型号不同功能不 78

同 Q8 电压电压电流显示数值有部分明显错误电流显示数值有部分明显错误 ( 例如 :B 相电压过大 )? Ans:(1) 可能为接线方式设置问题 (2) 将电压或电流的接线方式, 按系统的实际接线, 在电表设置中改为正确 P.S. 请谨慎小心使用设定模式中各项功能, 如设定错误将会有通讯电压电流显示不正确, 电度累积不正确 PME-1230 V16 79