AKW1111B

KW1M/KW1M-H Eco-POWER METER (AKW1) Simple and compact power meter perfect for control panels KW1M Eco-POWER METER (Standard type) FEATURES KW1M (Standard type) AKW1110 • In addition to simple measurement of voltage, current, power and integrated electrical power, etc., output of alarm signal is possible using the “alarm setting”. • 50 mm thickness • Both screw and DIN rail installation (easy installation). • Switchable between electrical power and electricity charge usage. • Display of calculated CO2 value possible. KW1M (Standard type) AKW1111 Only AKW1111 • Direct input with 400 VAC system • Three-phase four-wire system • Power factor and frequency measurement • Simultaneous power/pulse measurement Compliance with RoHS Directive PRODUCT TYPES  Main unit Product name KW1M Eco-POWER METER Standard type Phase and wire system Single-phase two-wire system Single-phase three-wire system Three-phase three-wire system Three-phase four-wire system*1 Operating power supply 100 to 240 VAC, 50/60 Hz Measured voltage input Terminal type Model number 100/200 VAC Screw terminal (M3.5 “+/−” screw)*2 (M3 “+/−” screw) AKW1110 100/200/400 VAC (Select with setting mode) AKW1111 Notes: *1. Three-phase four-wire system: for AKW1111 only *2. The M3.5 “+/−” screws are only for the operation voltage and voltage input terminals (P0, P1, P2, and P3) of AKW1111.  Dedicated current transformer (CT) Rated primary current 5A/50A (common) 100A 250A 400A Model number AKW4801C AKW4802C AKW4803C AKW4804C Please order in accordance with the type of power distribution system you will be measuring. (Even if you will be using a secondary 5A CT, you will need an AKW4801C.)  Options Product name Mounting rail Fastening plate Mounting frame Descriptions Rail for holding DIN rail terminal socket Plate for holding DIN rail Used for mounting in a panel Model number AT8-DLA1 ATA4806 AKW1822  Tool and Software Product name KW Monitor*1 (Data collection software for Eco-POWER METER) KW Watcher (Electric power monitoring software) Descriptions Remark For parameter settings, editing of measurement values, and monitoring, etc. Please use in situations where Web Datalogger Unit (DLU)/Data Logger Light (DLL) and Eco-POWER METER are used together. For easy “visualization” of data collected in DLU or DLL You can download from our website (free of charge)*2 Notes: *1. KW Monitor only uses MEWTOCOL. You cannot use MODBUS (RTU) type. *2. Customer registration is required to download data.  Other tool Product name KW1M Eco-POWER METER User’s manual (pdf) Descriptions Remark Detailed explanation of Eco-POWER METER usage You can download from our website (free of charge)*2 All Rights Reserved © COPYRIGHT Panasonic Electric Works Co., Ltd. KW1M/KW1M-H Eco-POWER METER (AKW1) KW1M-H Eco-POWER METER (SD card type) Simple and compact power meter perfect for control panels FEATURES • In addition to simple measurement of voltage, current, power and integrated electrical power, etc., output of alarm signal is possible using the “alarm setting”. • 50 mm thickness • Both screw and DIN rail installation (easy installation). • Switchable between electrical power and electricity charge usage. • Display of calculated CO2 value possible. KW1M-H (SD card type) • Internal memory (Read by SD card) • Built-in battery (for clock and log data backup) • Addition of measurement items - Power factor, frequency, and pulse counter - Integrated electrical power by month/day/hour - Calendar timer function Compliance with RoHS Directive PRODUCT TYPES  Main unit Product name KW1M-H Eco-POWER METER SD card type Phase and wire system Single-phase two-wire system Single-phase three-wire system Three-phase three-wire system Three-phase four-wire system Operating power supply Measured voltage input Terminal type Model number 100 to 240 VAC, 50/60 Hz 100/200/400 VAC (Select with setting mode) Screw terminal (M3 “+/−” screw) AKW1121  Dedicated current transformer (CT) Rated primary current 5A/50A (common) 100A 250A 400A Model number AKW4801C AKW4802C AKW4803C AKW4804C Please order in accordance with the type of power distribution system you will be measuring. (Even if you will be using a secondary 5A CT, you will need an AKW4801C.)  Options Product name Mounting rail Fastening plate Backup battery Mounting frame Descriptions Rail for holding DIN rail terminal socket Plate for holding DIN rail Used for memory backup function or clock function Used for mounting in a panel Model number AT8-DLA1 ATA4806 AFPG804 AKW1822  Tool and Software Product name KW Monitor*1 (Data collection software for Eco-POWER METER) Descriptions Remark For parameter settings, editing of measurement values, and monitoring, etc. KW View (Power display tool) For KW1M-H You can then display the data as a graph by Eco-POWER METER data (electric power only). (1 hour units fixed) KW Watcher (Electric power monitoring software) Please use in situations where Web Datalogger Unit (DLU)/Data Logger Light (DLL) and Eco-POWER METER are used together. For easy “visualization” of data collected in DLU or DLL You can download from our website (free of charge)*2 Notes: *1. KW Monitor only uses MEWTOCOL. You cannot use MODBUS (RTU) type. *2. Customer registration is required to download data.  Other tool Product name KW1M-H Eco-POWER METER User’s manual (pdf) Descriptions Remark Detailed explanation of Eco-POWER METER usage You can download from our website (free of charge)*2 All Rights Reserved © COPYRIGHT Panasonic Electric Works Co., Ltd. KW1M/KW1M-H Eco-POWER METER (AKW1) MEASUREMENT ITEMS Item Instantaneous electric power (Active) Integrated electric power (Active) R current S current*1 T current R (RS) voltage Voltage S (RT) voltage*1 T (TS) voltage Electricity charge*2 Converted CO2 value Power factor*1 Frequency*1 ON time Hour meter OFF time Pulse counter*1 Current Unit kW kWh/MWh A A A V V V — kg-CO2 — Hz h (Hour) h (Hour) — Data displayed range 0.00 to 9999.99 0.00 to 9999.99kWh 0.00 to 9999999.99kWh (When 9-digit display) 0.0 to 6000.0 0.0 to 6000.0 0.0 to 6000.0 0.0 to 9999.9 0.0 to 9999.9 0.0 to 9999.9 0.00 to 999999 0.00 to 999999 0.0 to 1.00 (Identify leading phase “–” or lagging phase) (Only in range of phase angle θ = –90° to +90°) 47.5 to 63.0 0.0 to 99999.9 0.0 to 99999.9 0 to 999999 *1. For AKW1110, AKW1121 only *2. Eco-POWER METER is designed chiefly for managing energy saving. It is not intended to be used for billing. SPECIFICATIONS  Main unit Item Rated operating voltage Rated frequency Rated power consumption Allowable operating voltage range Allowable momentary power-off time Ambient temperature Ambient humidity Breakdown voltage (initial) Insulation resistance (initial) Vibration resistance Shock resistance Display method Power failure memory method Size Weight Specifications 100 to 240V AC 50/60Hz common AKW1110: 6 VA (240V AC at 25°C) / AKW1111, AKW1121: 8 VA (240V AC at 25°C) 85 to 264V AC (85% to 110% of rated operating voltage) 10ms –10 to +50°C (–25°C to +70°C at storage) 30 to 85%RH (at 20°C non-condensing) • Outer edge (case) – all terminals Between the isolated circuits: 2000V for 1min • Insulated circuit - Operating power supply terminals – Analog input terminals*1 - Operating power supply terminals – Pulse input terminals*1 Between the isolated circuits: 100MΩ or more - RS485 – All other terminals (measured with 500V DC) - Pulse output terminals – All other terminals 10 to 55Hz (1cycle/min) single amplitude: 0.375mm (1h on 3 axes) Min. 294m/s2 (5 times on 3 axes) LCD with backlight Upper section: Green, 4-digit, 16-segment, Letter height: 6.5 mm Lower section: Amber, 6-digit, 7-segment, Letter height: 7.5 mm EEP-ROM (more than 100,000 overwrite) 75 × 90 × 50 mm AKW1110 and AKW1111: approx. 170g, AKW1121: approx. 180g (without battery) *1. Analog input terminals: No.3 to No.6 (for AKW1111), No.4 to No.6 (for AKW1110 and AKW1121) Pulse input terminals: No.12 and No.13 (for AKW1111) No Connection terminal (N.C.) is internally connected to the analog input circuit. All Rights Reserved © COPYRIGHT Panasonic Electric Works Co., Ltd. KW1M/KW1M-H Eco-POWER METER (AKW1)  Power input specifications Specifications Item AKW1110 Phase and wire system Rating Input voltage Allowable measurement voltage VT ratio Input current Special functions Accuracy (without error in CT and VT) AKW1111 and AKW1121 Single-phase two-wire, Single-phase three-wire, Three-phase three-wire (common) Primary side rating Cut-off current Cut-off voltage Current threshold for hour meter Instantaneous electric power Integrated electric power Voltage Indication Current accuracy Electricity charge Calculated CO2 value Single-phase two-wire, Single-phase three-wire, Threephase three-wire, Three-phase four-wire (common) Single-phase two-wire: 0 to 440V AC (Line voltage) Single-phase two-wire: 0 to 220V AC (Line voltage) Single-phase three-wire: 0 to 220V AC (Phase voltage) Single-phase three-wire: 0 to 110V AC (Phase voltage) Three-phase three-wire: 0 to 440V AC (Line voltage) Three-phase three-wire: 0 to 220V AC (Line voltage) Three-phase four-wire: 0 to 254V AC (Phase voltage) Up to 120% of rated input voltage Single-phase two-wire: 0 to 528V AC (Line voltage) Single-phase two-wire: 0 to 264V AC (Line voltage) Single-phase three-wire: 0 to 264V AC (Phase voltage) Single-phase three-wire: 0 to 132V AC (Phase voltage) Three-phase three-wire: 0 to 528V AC (Line voltage) Three-phase three-wire: 0 to 264V AC (Line voltage) Three-phase four-wire: 0 to 300V AC (Phase voltage) 1.00 to 99.99 (Set with setting mode) *A Voltage transformer (VT) is required when measuring loads that exceed the rated input voltage (AKW1110 is 200 VAC and AKW1111 and AKW1121 are 440 VAC). (Please use a commercially available VT with rated secondary measurement voltage of 110 V.) 5 A/50 A/100 A/250 A/400 A (Select with setting mode) 1 to 4000 A (Set with setting mode) *Use a commercial CT with secondary side current of 5A when measure 400A or more. *Accuracy coverage: 10 to 100% of rated current of CT 1.0 to 50.0%F.S. (Select with setting mode) Within 5% of rated voltage (within voltage value sought by rated voltage × 0.05 × VT ratio) (fixed) 1.0 to 100.0%F.S. ±2.5% F.S. +1 digit (at 20°C, rated input, rated frequency, power factor 1) *Accuracy coverage: 10 to 100% of rated current of CT ±0.01%+1digit (at 20°C), Monthly accuracy: ±260 sec. (for your reference) (In case power on start or current energizing: ±0.01%+1s+1 digit, at 20°C) ±1.5% F.S. /10°C +1 digit (Range of –10 to 50°C for rated input, power factor 1) ±1.5% F.S. +1 digit (Frequency change±5% based on rated frequency, for rated input, power factor 1) Hour meter Temperature characteristics Frequency characteristics  Pulse input specifications (For AKW1111 and AKW1121) Item Specifications Addition (Fixed) 2kHz/30Hz (Select with setting mode) Min. input signal width: 0.25ms (When 2kHz selected)/16.7ms (When 30Hz selected), ON : OFF ratio = 1 : 1 Input mode Max. counting speed Pulse input Contact/No contact (open collector) • Impedance when shorted: Max. 1kΩ • Residual voltage when shorted: Max. 2V • Impedance when open: Min. 100kΩ HOLD (Over count) Setting possible up to 3 digits after decimal point 0.001 to 100.000 (Select with setting mode) Input signal (at 20°C) Output mode Pre-scale setting Decimal point Range  Pulse output (transistor output) specifications Item Number of output point Insulation method Output type Output capacity Pulse width ON state voltage drop OFF state leakage current AKW1110 Pulse output unit (Select with setting AKW1111 and AKW1121 mode) Specifications 1 point Optical coupler Open collector 100mA 30V DC Approx. 100ms 1.5V or less 100µA or less 0.001/0.01/0.1/1/10/100 kWh/Power alarm (AL-P)/Current alarm (AL-C) 0.001/0.01/0.1/1/10/100 kWh/Power alarm (AL-P)/Current alarm (AL-C)/Standby power alarm (AL-S)/ Counter (Cnt) * We recommend the setting of minimum unit for pulse output for measurement shown as below. Output pulse: 4 pulse or less per 1sec. Calculation method: (Pulse output unit: value of PL-P) > (Max. measured power [kW]) / (3600 [s] × 4 [pulse/s]) Note 1: Count errors may occur if pulse output unit is set so that 4 or more pulses are output per 1 second. Note 2: The connected counter or PLC may cause count errors if the OFF time of the pulse output unit is short. All Rights Reserved © COPYRIGHT Panasonic Electric Works Co., Ltd. KW1M/KW1M-H Eco-POWER METER (AKW1) Communication specifications Item Interface Protocol Isolation status Number of connected units Transmission distance Transmission speed Data length Transmission format Parity Stop bit Communication method Synchronous system Ending resistance Specifications Conforming to RS485 MEWTOCOL/MODBUS (RTU) (selectable with setting mode) Isolated with the internal circuit 99 (max.)*2, *3 1200m*1 38400/19200/9600/4800/2400 bps (selectable with setting mode) 8bit/7bit (selectable with setting mode)*4 Not available/Odd number/Even number (selectable with setting mode) 1 bit (fixed) Half-duplex Synchronous communication method Approx. 120Ω (built-in) *1. Please check with the actual devices when some commercial devices with RS485 interface are connected. The number of connected devices, transmission distance, transmission speed may be different according to using transmission line. *2. For RS485 converter on the computer side, we recommend SI-35 and SI-35USB (from LINE EYE Co., Ltd.). *3. When using SI-35, SI-35USB or our PLC (which can be connected up to 99 units), up to 99 Eco-POWER METER can be connected. In case using this system with the other devices, up to 31 Eco-POWER METER can be connected. *4. With MODBUS (RTU) protocol, it works only with data length (8bit/7bit). * Modbus Protocol is a communications protocol developed for PLCs by Modicon Inc. *For RS485 communication and recommended cable, please refer to “PRECAUTIONS IN USING Eco-POWER METER”. Memory specifications of main unit (KW1M-H only) Item Specifications Save cycle File type 1 (instantaneous value)*5 File type 2 (difference value)*5 60 min. (on the hour) (fixed) Save data Save data amount Save cycle Save data Save data amount Save cycle File type 3 (instantaneous value detail)*5 Save data Save data amount Main unit display Calendar timer function Content of battery backup/Battery life*6 Instantaneous value: Integrated electric power, Instantaneous electric power, Current, Voltage, Power factor, Frequency, Pulse count value 24 records per file (max. approx. 1.5 years worth of data) 60 min. (on the hour) (fixed) Difference value: Integrated electric power, Pulse count value 24 records per file (max. approx. 1.5 years worth of data) Select among 1 min, 5 min, 10 min, 15 min, 30 min, or 60 min. Saved timing: When 1 min is selected: starts immediately after power is turned on When 5 min is selected: 00, 05, 10, 15, 20, 25, 30... min after the hour When 10 min is selected: 00, 10, 20, 30, 40, 50 min after the hour When 15 min is selected: 00, 15, 30, 45 min after the hour When 60 min is selected: 00 min after the hour Integrated electric power, Instantaneous electric power, Current, Voltage, Power factor, Frequency, Pulse count value Max. 7,200 records, Approx. 5 days (when save cycle is 1 min.) Integrated electric power by month (latest data covering 1.5 year period)/Integrated electric power by day (latest data covering 1 month period)/Integrated electric power by hour (latest data covering 24 hours period) Time accuracy; monthly accuracy: ±240 sec. (at –10° C)/monthly accuracy: ±70 sec. (at 25° C)/ monthly accuracy: ±240 sec. (at 50° C) Time measurement and log data retained/Approx. 2 years (at ambient temperature 25° C) (During discontinuity) *5. In file types 1, 2, and 3, whether or not writing on SD card is conducted can be selected by each respective setting mode. *6. When the remaining battery level is low, the “BATT” display flashes. Replace the battery according to the battery replacement procedure. In addition, when the temperature of the main unit is high, the battery life decreases. External memory specifications (KW1M-H only) Item Support media Supported format standards Specifications SD card*7 Compliant with SD and SDHC standards*8 *7. Operation verified maker: Panasonic Corporation (SD/SDHC memory card: 2 GB, 4 GB, 8 GB) *8. To format SD cards, please download and use the formatting software available on the Panasonic website. [Panasonic website → Customer support → SD/SDHC card page → Software download list] http://panasonic.jp/support/sd_w/download The file system on a SD card that was formatted using standard PC software does not comply with the SD card standard. All Rights Reserved © COPYRIGHT Panasonic Electric Works Co., Ltd. KW1M/KW1M-H Eco-POWER METER (AKW1) DIMENSIONS (mm inch) The CAD data of the products with a CAD Data mark can be downloaded from: http://panasonic-electric-works.net/ac Tolerance: ±1.0 ±.039 KW1M Standard type: AKW1110 and AKW1111 KW1M-H SD card type: AKW1121 CAD Data Mounting hole dimensions (1:2) 67±0.5 2.638±.020 • AKW1111/AKW1121 75 2.953 67 2.638 39.1 1.539 1±0.5 .039±.020 Terminal cover (transparent) 6 .236 Connectors for current transformer (CT) • AKW1110 11 11 1±0.5 .039±.020 .433 .433 67.8 2.669 1.1±0.5 .043±.020 90 3.543 82 3.228 18.2 .717 82±0.5 3.228±.020 2-5 .197 dia. (Mounting hole) 2×M4 .157 SD card throttle* M3 .118 (Fastening torque: 0.5 to 0.6 N·m) 39.1 1.539 1±0.5 .039±.020 50 1.969 47 1.850 25.1 .988 8 .315 R1 .039 AKW1110/1121 Terminal cover (transparent) 1±0.5 .039±.020 11 .433 AKW1111 67.8 2.669 71 2.795 60 2.362 58 2.283 18.2 .717 35.4 1.394 Connectors for current transformer (CT) *SD card throttle only applies to SD card type KW1M-H. (54*) (2.126*) (55*) (2.165*) *When installing DIN rail TERMINAL ARRANGEMENT AND WIRING DIAGRAMS  Terminal wiring Be sure to wire correctly according to the terminal arrangement and wiring diagrams. After completing wiring, be sure to attach the terminal cover for safety reasons.  Terminal arrangement • AKW1110 Function Operating power supply E IOP{} qw Terminal No. Function L N Q W E I O P + − E RS485 P1 P0 P2 R T Y U*1 { } q*1 w*1 + − Pulse output N.C. Measured voltage input RS485 Pulse output N.C. N.C. *1. U, q and w terminals are connected internal to analog input circuit. Please do not use for wiring with daisy chain. QWERTYU P1 P0 P2 Operating Measured power supply voltage input RS485 Pulse output Pulse input E • AKW1111 UIOP{}q Function Operating power supply Measured voltage input Screw L N P1 P0 P2 P3 M3.5 “+/−” screw Terminal No. Screw Function Q U W I + − E R T Y O P { } q E + − + − M3 “+/−” screw RS485 Pulse output Pulse input QWERTY P1 P0 P2 P3 Operating Measured power supply voltage input All Rights Reserved © COPYRIGHT Panasonic Electric Works Co., Ltd. KW1M/KW1M-H Eco-POWER METER (AKW1) RS485 Pulse output Pulse input E • AKW1121 IOP{} qw Function Terminal No. Q W E I O P + − E P1 P0 P2 P3 R T Y U { } q w + − + − N.C. Measured voltage input Function L N Operating power supply RS485 Pulse output Pulse input QWERTYU P1 P0 P2 P3 Operating power supply Measured voltage input The input voltage to each terminal is as follows. (AKW1111) Terminal Phase and wire system Between terminals Operating power supply Single-phase two-wire Single-phase two-wire Single-phase three-wire Three-phase three-wire Three-phase four-wire Q-W E-R E-R-T E-R-T E-R-T-Y Measured voltage input Input voltage AKW1111 100 to 240VAC (100-240V~) (Line voltage) 0 to 440VAC (0-440V~) (Line voltage) 0 to 220VAC (0-220V~: 3W) (Phase voltage) 0 to 440VAC (0-440V 3~) (Line voltage) 0 to 254VAC (0-254V 3N~) (Phase voltage) The input voltage to each terminal is as follows. (AKW1110 and AKW1121) Terminal Phase and wire system Between terminals Operating power supply Single-phase two-wire Single-phase two-wire Single-phase three-wire Three-phase three-wire Three-phase four-wire Q-W R-T R-T-Y R-T-Y R-T-Y-U Measured voltage input Input voltage AKW1110 AKW1121 100 to 240VAC (100-240V~) (Line voltage) 0 to 220VAC (0-220V~) (Line voltage) 0 to 440VAC (0-440V~) (Line voltage) 0 to 110VAC (0-110V~: 3W) (Phase voltage) 0 to 220VAC (0-220V~: 3W) (Phase voltage) 0 to 220VAC (0-220V 3~) (Line voltage) 0 to 440VAC (0-440V 3~) (Line voltage) — 0 to 254VAC (0-254V 3N~) (Phase voltage)  Wiring diagrams • AKW1110 Measure load of 100 to 200VAC system • Single-phase two-wire system • Single-phase three-wire system/Three-phase three-wire system *One CT is required. + – 8 9 *Two CTs are required. Pulse output RS485 E 10 + – 11 12 RS485 13 14 *1 *1 0.1A 30VDC 1 2 3 4 *1 Power 1 supply side 2 Operating power supply 100 to 240VAC 50/60Hz – 8 9 Pulse output E 10 5 P0 6 7 *1 *1 Measured voltage input + – 11 12 13 14 *2 *2 0.1A 30VDC CT1 N.C. P1 + 1 2 3 4 CT1 CT2 5 6 N.C. *2 *Do not connect to CT2 and CT3. CT1 Power R R 1 supply N S 2 side T T 3 Load side K L Direction of CT Operating power supply 100 to 240VAC 50/60Hz P1 P0 P2 7 *2 Measured voltage input *Do not connect to CT3. CT1 Load side CT2 K L Direction of CT *1. Do not wire to E, Y, U, q, w terminal. They are connected internal. *2. Do not wire to E, U, q, w terminal. They are connected internal. When measuring a load with exceed rated input voltage The voltage transformer (VT) is required when you measure a load with exceed rated input voltage (220 V AC system). Use commercial VT, those secondary rating is 110 V. • Single-phase two-wire system Eco-POWER METER (Secondary side) • Single-phase three-wire system/ Three-phase three-wire system Eco-POWER METER (Secondary side) RT RTY VT VT Power 1 supply side 2 (Primary side) Load side Power 1 R R supply 2 N S side 3 T T (Primary side) Load side *Grounding the secondary side of voltage transformer (VT) and current transformer (CT) is not necessary with low voltage circuit. All Rights Reserved © COPYRIGHT Panasonic Electric Works Co., Ltd. KW1M/KW1M-H Eco-POWER METER (AKW1) • AKW1111 Measure load of 100 to 200 VAC and 400 VAC system • Single-phase two-wire system • Single-phase three-wire system/Three-phase three-wire system *One CT is required. *Two CTs are required. RS485 + – 7 8 Pulse output Pulse input E 9 RS485 + – + – + – 10 11 12 13 7 8 5 *1 6 *1 0.1A 30VDC 1 2 3 P1 Power 1 supply side 2 P0 1 2 – + – 11 12 13 5 6 *2 3 CT1 Power R R 1 supply N S 2 side T T 3 Load side L K 4 P1 *Do not connect to CT2 and CT3. Measured voltage input + 10 0.1A 30VDC CT1 4 Operating power supply 100 to 240VAC 50/60Hz Pulse output Pulse input E 9 Direction of CT P0 CT1 CT2 P2 Operating power supply 100 to 240VAC 50/60Hz *Do not connect to CT3. Measured voltage input – 7 8 *1. Do not wire to T, Y terminal. They are connected internal. *2. Do not wire to Y terminal. They are connected internal. Pulse output Pulse input E 9 + – + – 10 11 12 13 5 6 0.1A 30VDC 1 2 3 R1 Power S 2 supply side T 3 N4 CT1 CT2 CT3 4 P1 L K Direction of CT *Three CTs are required. + Load side CT2 • Three-phase four-wire system RS485 CT1 P0 P2 P3 Operating power supply 100 to 240VAC 50/60Hz Measured voltage input CT1 CT2 Load side CT3 L K Direction of CT When measuring a load with exceed rated input voltage The voltage transformer (VT) is required when you measure a load with exceed rated input voltage (440 V AC system). Use commercial VT, those secondary rating is 110 V. • Single-phase two-wire system • Single-phase three-wire system/ Three-phase three-wire system • Three-phase four-wire system Eco-POWER METER (Secondary side) Eco-POWER METER (Secondary side) ER Eco-POWER METER (Secondary side) ERT ERTY VT VT (Primary side) Power 1 supply side 2 Power 1 R R supply 2 N S side 3 T T Load side VT (Primary side) (Primary side) Power R supply S side T N Load side Load side *Grounding the secondary side of voltage transformer (VT) and current transformer (CT) is not necessary with low voltage circuit. • AKW1121 Measure load of 100 to 200 VAC and 400 VAC system • Single-phase two-wire system • Single-phase three-wire system/Three-phase three-wire system *One CT is required. RS485 + – 8 1 *Two CTs are required. Pulse output Pulse input RS485 + – + – + – 9 E 10 11 12 13 14 8 2 3 4 1 0.1A 30VDC N.C. Power 1 supply side 2 + – + – 9 11 12 13 14 2 3 4 6 7 *2 0.1A 30VDC CT1 5 P1 Pulse output Pulse input E 10 P0 Operating power supply 100 to 240VAC 50/60Hz 6 7 *1 *1 CT1 CT2 5 N.C. P1 *Do not connect to CT2 and CT3. Measured voltage input CT1 Load side L K Direction of CT Power R R 1 supply N S 2 side T T 3 Operating power supply 100 to 240VAC 50/60Hz P0 P2 Measured voltage input – 8 9 *1. Do not wire to Y, U terminal. They are connected internal. *2. Do not wire to U terminal. They are connected internal. Pulse output Pulse input E 10 + – + – 11 12 13 14 6 7 0.1A 30VDC 1 2 3 4 CT1 CT2 CT3 5 N.C. P1 R1 Power S 2 supply side T 3 N4 Operating power supply 100 to 240VAC 50/60Hz P0 P2 L Direction of CT *Three CTs are required. RS485 Load side CT2 K • Three-phase four-wire system + *Do not connect to CT3. CT1 P3 Measured voltage input CT1 CT2 Load side CT3 K L Direction of CT All Rights Reserved © COPYRIGHT Panasonic Electric Works Co., Ltd. KW1M/KW1M-H Eco-POWER METER (AKW1) When measuring a load with exceed rated input voltage The voltage transformer (VT) is required when you measure a load with exceed rated input voltage (440 V AC system). Use commercial VT, those secondary rating is 110 V. • Single-phase two-wire system • Single-phase three-wire system/ Three-phase three-wire system Eco-POWER METER (Secondary side) Eco-POWER METER (Secondary side) RT Eco-POWER METER (Secondary side) RTY RTYU VT VT Power 1 supply side 2 • Three-phase four-wire system (Primary side) Power 1 R R supply 2 N S side 3 T T Load side VT (Primary side) Load side (Primary side) Power R supply S side T N Load side *Grounding the secondary side of voltage transformer (VT) and current transformer (CT) is not necessary with low voltage circuit. 3.7mm dia. 6.6mm or less 3.2mm • M3.5 screw: AKW1111 (1) Terminal fastening torque should be approx. 1.0 N·m. In case of using a crimping terminal, with insulating sleeve applicable to M3.5 screw. (Refer to the below.) 6.6mm or less 3.2mm dia. 5.8mm or less 5.8mm or less  Caution for Wiring • M3 screw: AKW1110 and AKW1121 (1) Terminal fastening torque should be 0.5 to 0.6N·m. In case of using a crimping terminal, use it with insulating sleeve applicable to M3 screw. (Refer to the below.) 3.7mm (2) To protect the device, it is necessary to install power switch and circuit breaker in operating power supply circuit. And this has no built-in power switch, circuit breaker or fuse for measured voltage input parts. Therefore it is necessary to install them in the circuit near main unit. (3) We recommend a wire with the cross section of 0.75 to 1.25 mm2 for operating power supply line and measured voltage input line. (4) Use fire resistant electrical wire (UL electrical wire, etc.) CAUTIONS FOR SAFETY Please use correctly only after you have thoroughly read “User’s Manual, Instruction Manual, and Catalog”. All Rights Reserved © COPYRIGHT Panasonic Electric Works Co., Ltd.