YOKOGAWA PR720 User Manual
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YOKOGAWA PR720 User Manual

YOKOGAWA PR720 User Manual

Power and energy meter
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User's
Manual
Y okogawa Electric Corporation
Model
PR720
Power and Energy Meter
User's Manual
IM 77C01E31-01EN
1st Edition

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Summary of Contents for YOKOGAWA PR720

  • Page 1 User’s Manual Model PR720 Power and Energy Meter User’s Manual IM 77C01E31-01EN 1st Edition Y okogawa Electric Corporation...
  • Page 3 User Registration Request Thank you for purchasing YOKOGAWA products. Please register to the following Partner Portal Member Site. You can use various services such as confirmation of purchased product information, download of related materials, and newsletter. https://partner.yokogawa.com/global/...
  • Page 5 SFLC-212-181 Introduction Thank you for your purchase of our product. Read this instruction manual carefully before installation, wiring, and using this product. Keep this instruction manual handy for reference at any time. Have a contact with us or sales agent in case that this instruction manual is lost or damaged. <Caution>...
  • Page 6 SFLC-212-181 Other precaution  Don't mount or store this unit in the following environment. Places where corrosive gas (SO S / etc.)( ) is generated. １ Places where dust is generated. Places with much vibration and shock. Places with influence of external magnetic field ( ２...
  • Page 7 SFLC-212-181 The precaution for use 1. Environment of usage and storage. Don’t mount or store this product in the following environments. If the unit becomes defective due to the use in an environment other than specified, it may be repaired for pay even during its warranty period (one year after the date of delivery).
  • Page 8 SFLC-212-181 5. Setting This unit requires setting and confirmation of the measuring range, etc. before use. Wrong setting, if any, causes malfunction of the unit. If setting should be wrong, neither measurement nor output becomes correct. Carefully read the instruction manual before setting the unit. ■...
  • Page 9 SFLC-212-181 3-phase 3-wire Single-phase 3-wire Single-phase № Setting item 110V input 220V input (U-W-N) 110V input 220V input Address Transmission rate 9600bps 9600bps 9600bps Communication output Parity Even number Even number Even number Stop bit 1 bit 1 bit 1 bit Factor Pulse output Pulse unit...
  • Page 10 SFLC-212-181 6. Operation Be careful with the following cautions during use.  Use the input within the rated range. Be careful since negligence of this caution may cause troubles of the unit.  There is a function to hold the maximum value and the minimum value with a measurement factor in this product. A blackout is guaranteed and this value isn't also cleared by a power supply reset.

  • Page 11: Table Of Contents

    SFLC-212-181 Content 1. Product outline ･･･････････････････････････････････････････････････････････ 1.1 Usage of product ･･･････････････････････････････････････････････････････ 8 1.2 Features of product ････････････････････････････････････････････････････ 8 1.3 Model and suffix codes ･･･････････････････････････････････････････････････ 8 2. The name and function of each part ････････････････････････････････････････ 9 3. Preparation Installation ･･･････････････････････････････････････････････････････････ 10 3.2 Connections ････････････････････････････････････････････････････････････...

  • Page 12: Product Outline

    (only white backlight) are possible. Automatic turning off the lights at the time of non-operation can be established. 1.3 Model and suffix codes Model Suffix Codes Descriptions PR720 Power and Energy Meter (with terminal cover) Universal three-phase three-wire system Suffix (single-phase two-wire, single-phase three-wire, and three-phase three-wire Codes...

  • Page 13: The Name And Function Of Each Part

    SFLC-212-181 2. The name and function of each part Bar graph display The measurement value of the main monitor Scale markings is indicated by the analog. (Setting which does It sets automatically by measurement-range setting. bar graph display of the measurement value of sub-monitor is also possible.) Upper limit (or lower limit) setting index Digital display...

  • Page 14: Preparation

    SFLC-212-181 3. Preparation 3.1 Installation Mount the unit by the attached M5 nuts to a panel of thinner than 10mm, referring to the following external dimensions drawing and panel cutout. Fasten these nuts with tightening torque 2.0 to 2.5N･m. ● Dimension diagram ●...

  • Page 15: Connections

    SFLC-212-181 3.2 Connections Please perform connection after referring to the following wiring diagram. ● Connection drawing ( (1) 1φ2W (2) 1φ3W TERM TERM SHIELD SHIELD PULSE+ PULSE+ PULSE- PULSE- ALM+ ALM+ ALM- ALM- (3) 3φ3W Note( ) By setting, it can switch an external operation input.

  • Page 16: Operation

    SFLC-212-181 4. Operation ● The function of switch Switch Function The integrated value of electric energy is changed to the usual display and an enlarged display. If it continues pushing 3 seconds or more, it will change to setting mode. In setting mode, it is used for the determination of a set point.

  • Page 17: The Screen Change And Function By Switch Operation

    SFLC-212-181 4.1 The screen change and function by switch operation This product changes various screens by switch operation. Here, the change step of the screen by switch operation is explained. Wh, varh factor display Electric-energy Conditions: integrated-value At manual reset setting enlarged display No operation, Alarm reset...

  • Page 18: The Kind Of Display

    SFLC-212-181 4.2 The kind of display 4.2.1 Measurement display The change of the measurement display element of the main monitor by switch operation and the change of the phase / line display of current / voltage is possible (temporarily). In a general measurement display, if switch operation is not performed for 10 minutes after changing a display element, it returns to the original measurement display element automatically.

  • Page 19: Alarm Detection Display

    SFLC-212-181 Measurement Measurement Example of display Note Example of display Note factor factor Power factor Frequency cosφ LEAD display Watt-hour Watt-hour “－ (Power (Power (minus)” receiving) transmission) display var-hour var-hour (Power (Power “LAG” “LEAD” receiving, receiving, display display LAG) LEAD) varh(LAG) varh(LEAD) var-hour...
  • Page 20 SFLC-212-181 ・The example of a display at the case of the detection in each alarm factor. In case the alarm factor is indicating by measurement at the main monitor or the sub monitor, a measurement value constitutes a blinking display. The displays after an alarm return.

  • Page 21: Setting Display

    SFLC-212-181 4.2.3 Setting display It is the display at the case of various setting. There are three types of setting modes according to the contents of a setting. Operation and the contents of setting (detail) in setting mode, please refer to "5 Setting". (1) Setting mode 1 Setting of a measurement display element, an alarm output, and an alarm value is mainly...

  • Page 22: Operation

    SFLC-212-181 4.3 Operation 4.3.1 The main monitor display-element change The measurement display element of the main monitor is changed. A change is performed by ＋ －. A measurement display and maximum display, minimum display can also perform this operation. After changing a measurement display element, if a switch is not operated for 10 minutes, it will return to the original measurement display element automatically.

  • Page 23: Enlarged Display Of Integral Power Consumption

    SFLC-212-181 4.3.3 Enlarged display of integral power consumption In case electric energy is being displayed by the general measurement display, an electric-energy display is changed to a normal display (5 digits of integers), and an enlarged display (2 digits integer + below decimal point, 3 digits). A change is performed by SET .

  • Page 24: Setting Mode

    SFLC-212-181 4.3.5 Setting mode Various kinds of setting are performed. Setting mode is three types, and operations are different. DISPLAY is pushed in case it returns to the original measurement display. And, if a switch is not operated for 10 minutes after a set point check, it will return to the original measurement display automatically.

  • Page 25: Reset

    SFLC-212-181 4.3.6 Reset Various kinds of reset are performed. The kind of reset is as follows and operations are different, respectively. Reset of integral power consumption (zero clear), Reset of maximum value and minimum value (it updates to the instantaneous value at the time), Alarm-output reset (OFF of an alarm output (at the case of manual reset setting)). And, the operation from each measurement display constitutes conditions at each reset.
  • Page 26 SFLC-212-181 (2) Alarm reset In case an alarm return method is set to “HOLD (manual return)”, an alarm output is reset (output OFF). (With an alarm-output) However, an output is not turned off by this operation, in case an alarm continues and it has caused. And, this operation is unnecessary if an alarm return method is set as "AUTO (automatic return)".
  • Page 27 SFLC-212-181 b) All reset of maximum value and minimum value. It resets all the maximum values and minimum values. In addition, setting can perform same operation in external operation input. Please refer to "5.3.2 Setting mode 2 (4) external operation input setting" for the setting method. Please refer to "6.3 Input/output functions"...

  • Page 28: Setting

    SFLC-212-181 5. Setting < Caution > When changing the input circuit setting, please be sure to perform a setup from an input circuit setting in the setting mode 3. After changing the other setting, when the input circuit setting is changed the set value returns to default value (default value of a changed input circuit).
  • Page 29 SFLC-212-181 Setting mode 2. Function table (1) Setting Important Function Functional description Default setting Page setting 3φ3W 6600V Sets the voltage-measurement range ✓ Voltage range 1φ3W 110.0V 43 to 46 (primary voltage). 1φ2W 3300V 3φ3W 4 digits Digit number of voltage Sets the digit number of voltage range.
  • Page 30 SFLC-212-181 Setting mode 2. Function table (2) Setting Important Function Functional description Default setting Page setting External operation input Sets the function of the external operation ✓ Alarm reset function input. Sets the ON/OFF of voltage measurement Voltage ON/OFF display. Sets the ON/OFF of current measurement Current ON/OFF display.

  • Page 31: Setting Table

    SFLC-212-181 5.2 Setting table A setting item changes by the specification of a product. (1) Important setting Each parenthesized number shows a setting number and this number is displayed on the setting screen. Items Setting and operation procedures Page Press SET and DISPLAY together for longer than 3 seconds (311) Sets the phase wire of input circuit.
  • Page 32 SFLC-212-181 Items Setting and operation procedures Page Press SET and RESET/SHIFT together for longer than 3 seconds Press MODE (211) (221C) Set the stop bit Press RESET/SHIFT Press RESET/SHIFT Press RESET/SHIFT added to (222C) (223C) (224C) communication data. Select an stop bit by ＋ and － Press SET Selected stop bit is entered (224C)
  • Page 33 SFLC-212-181 (2) A combination except a display pattern. Each parenthesized number shows a setting number and this number is displayed on the setting screen. Items Setting and operation procedures Page Press SET for longer than 3 seconds Press RESET/SHIFT Sets the display (111) (112) factor of main...
  • Page 34 SFLC-212-181 (4) Setting of reactive power measurement range. Each parenthesized number shows a setting number and this number is displayed on the setting screen. Items Setting and operation procedures Page Press SET and RESET/SHIFT together for longer than 3 seconds (211) Press RESET/SHIFT Press RESET/SHIFT...
  • Page 35 SFLC-212-181 (7) Setting of current display intrinsic sensitivity. Each parenthesized number shows a setting number and this number is displayed on the setting screen. Items Setting and operation procedures Page Press SET and RESET/SHIFT together for longer than 3 seconds (211) Sets the display Press RESET/SHIFT...
  • Page 36 SFLC-212-181 Items Setting and operation procedures Page Press SET and RESET/SHIFT together for longer than 3 seconds (211) Press RESET/SHIFT Press RESET/SHIFT Press RESET/SHIFT (212) (213) (214) Press RESET/SHIFT Press RESET/SHIFT Press RESET/SHIFT Sets the digit (215) (216) (217) number of Press RESET/SHIFT Press RESET/SHIFT Press RESET/SHIFT...
  • Page 37 SFLC-212-181 (11) Instant measurement setting Each parenthesized number shows a setting number and this number is displayed on the setting screen. Items Setting and operation procedures Page Press SET for longer than 3 seconds Press MODE Press MODE Sets the high-alarm (111) (121AL) (131H)

  • Page 38: Setting In Detail Explanation

    SFLC-212-181 5.3 Setting in detail explanation 5.3.1 Setting mode 1 3 seconds 111 to 116 DISPLAY Display setting MODE 121AL to 123AL DISPLAY Alarm output setting MODE Display mode 131H to 135 DISPLAY Demand detection setting MODE 141H to 142L DISPLAY Instant measurement detection setting MODE...
  • Page 39 SFLC-212-181 (1) 111 to 116 Display combination setting ● 3-phase 3-wire Sub monitor Sub monitor Sub monitor № Pattern № Main monitor Bar graph (Left) (Center) (Right) Pattern 1 A(V) V(UV) A(V) Pattern 2 A(V) V(UV) cosφ A(V) Pattern 3 A(V) V(UV) A(V)
  • Page 40 SFLC-212-181 ● Single-phase 3-wire ( Sub monitor Sub monitor Sub monitor № Pattern № Main monitor Bar graph (Left) (Center) (Right) Pattern 1 A(U) V(UN) A(U) Pattern 2 A(U) V(UN) cosφ A(U) Pattern 3 A(U) V(UN) A(U) Pattern 4 DA(U) V(UN) MDA(U) MDA+DA(U)
  • Page 41 SFLC-212-181 ● Single-phase 2-wire Sub monitor Sub monitor Sub monitor № Pattern № Main monitor Bar graph (Left) (Center) (Right) Pattern 1 Pattern 2 cosφ Pattern 3 Pattern 4 MDA+DA Pattern 5 MDA+DA Pattern 6 Pattern 7 cosφ Pattern 8 Pattern 9 MDW+DW Pattern 10...
  • Page 42 SFLC-212-181 Display combination setting MAX/MIN RESET/SHIFT RESET/ RESET/ RESET/ RESET/ RESET/ Combination SHIFT SHIFT Sub monitor SHIFT Sub monitor SHIFT Sub monitor Bar graph SHIFT Main monitor display MAX/MIN MAX/MIN (Left) MAX/MIN (Center) MAX/MIN (Right) MAX/MIN factor Pattern 1 A(V): 5 V(UV): 1 Wh: 18 Main monitor...
  • Page 43 SFLC-212-181 ◆ 111 Combination display Select the factors to be measured and monitored by New setting 4 digital displays out of combination patterns. Set values are updated by SET . Now setting ◆ 112 to 115 Main monitor, Sub monitor (left), Setting №...
  • Page 44 SFLC-212-181 (3) 131H to 135 Demand detection setting The next operation method is setting. Demand current, Demand power, High-alarm value, Time-interval, Power-factor, Demand power operation method. 131H 133H MAX/MIN MAX/MIN Demand current Demand current Demand power RESET/ MAX/MIN RESET/ upper limit time interval upper limit SHIFT...
  • Page 45 SFLC-212-181 (4) 141H to 142L Instant measurement detection setting An upper limit low-alarm value is set by instant measurement (voltage factor). 141H 142L MAX/MIN MAX/MIN New setting Now setting Instant measurement Instant measurement RESET/ RESET/ voltage upper limit voltage lower limit SHIFT SHIFT ◆...

  • Page 46: Setting Mode 2

    SFLC-212-181 5.3.2 Setting mode 2 SET and RESET/SHIFT 3 seconds 211 to 21D DISPLAY Measurement range setting MODE 221C to 224C DISPLAY Communication output setting MODE 231P to 232P DISPLAY Pulse output setting Display mode MODE DISPLAY External operation input setting MODE 251 to 25C DISPLAY...
  • Page 47 SFLC-212-181 (1) 211 to 21D Measurement range setting Sets the measurement range of each measurement factor. MAX/MIN Digit number MAX/MIN MAX/MIN Current display MAX/MIN Digit number Voltage of voltage of current intrinsic Current range RESET/ RESET/ RESET/ RESET/ range range range sensitivity SHIFT...
  • Page 48 SFLC-212-181 ◆ 213 Current range Sets the current range (primary current). Change of this setting also sets the measurement range of active power and reactive power automatically simultaneously. Selection by ＋ and － , set value is updated by SET . Default setting: 100.0A (3φ3W), 500.0A (1φ3W), 50.00A (1φ2W) Current-measurement range 750A...
  • Page 49 SFLC-212-181 ◆ 216 Active power polarity A swing display of active power meter can be selected from P (one-way deflection) and － (both deflection). Selection by ＋ and － , set value is updated by SET . Default setting: P (one-way deflection) New setting ＋...
  • Page 50 SFLC-212-181 ◆ 21A Digit number of reactive power range New setting Sets the digit number of reactive power range. Selection by ＋ and － , set value is updated by SET . Default setting: 4 digits The unit may be changed if the number of digits is changed. Example) 1000kvar 1.00Mvar Now setting...
  • Page 51 SFLC-212-181 (2) 221C to 224C Communication output setting 222C 221C MAX/MIN MAX/MIN 223C MAX/MIN 224C Transmission RESET/ RESET/ RESET/ Parity Stop bit Address rate SHIFT SHIFT SHIFT RESET/SHIFT ◆ 221C Address MAX/MIN New setting Sets the address of device in communication output. The address can be selected from 1 to 247.
  • Page 52 SFLC-212-181 (3) 231P to 232P Pulse output setting Various setting of a pulse output is performed. MAX/MIN MAX/MIN 231P 232P Pulse output factor Pulse unit RESET/ RESET/ New setting SHIFT SHIFT Setting No. Now setting ◆ 231P Pulse output factor, Sets the output factor of pulse output.
  • Page 53 SFLC-212-181 (5) 251 to 25C Measurement ON/OFF setting Measurement display ON/OFF setting of each measurement factor is performed. Selection by ＋ and － , set value is updated by SET . Default setting: ON (All measurement factors) New setting MAX/MIN MAX/MIN MAX/MIN Setting No.

  • Page 54: Setting Mode 3

    SFLC-212-181 5.3.3 Setting mode 3 SET and DISPLAY 3 seconds 311 to 312 DISPLAY Input circuit setting Display mode MODE DISPLAY Tidal current measurement setting MODE Setting mode 3 is selected by pressing SET and DISPLAY switches continuously for longer than 3 seconds. Pushing MODE switch performs movement of setting item.
  • Page 55 SFLC-212-181 ◆ 312 Input voltage Set the input voltage (3φ3W, 1φ2W) or phase-voltage full scale (1φ3W). In 3φ3W/1φ2W and 1φ3W, the contents of a setting are different. Selection by ＋ and － , set value is updated by SET . Default setting: 300V (1φ3W) Default setting: 110V (3φ3W, 1φ2W or no designation) ・3φ3W, 1φ2W...

  • Page 56: Specification

    SFLC-212-181 6. Specification 6.1 Specification and intrinsic error Input circuit Input 3-phase 3-wire AC110V, 220V common use. AC5A 50/60Hz Single-phase 2-wire Single-phase 3-wire AC100-200V ( ), AC5A 50/60Hz Note ( ) The rated voltage of each phase and W phase is 100V. However, the full scale of a bar graph is 300V. Intrinsic error ( Maximum Minimum...
  • Page 57 ) If the number of display digits is exceeded in spite of the measurable range, it becomes to 9999 (four-digit display) or 999 (triple digit display). ＊ Please reference to the Model PR720 Power and Energy Meter Modbus RTU Mode Protocol User’s Manual (IM 77C01E31-10EN) for the details of communication output data.

  • Page 58: Performance

    SFLC-212-181 6.2 Performance Item Specification Accuracy Reference to measure specification and accuracy Accuracy of bar graph ±10% (% for span) Influence by Within accuracy by 23±10°C. temperature JIS C 1102-1: 2007, JIS C 1102-2, -3, -4, -5, -7: 1997, JIS C 1111: 2006, Compliance standard JIS C 1216-1: 2009, JIS C 1263-1: 2009, TIA/EIA RS-485: 1983 JIS C 1010-1: 2005...
  • Page 59 SFLC-212-181 Item Specification (1) Oscillatory surge voltage If a vibration damping waveform (1 to 1.5MHz, Peak voltage: 2.5 to 3kV) is repeated and adds for 30 seconds, a measurement error should be within ±10%. And, there needs to be no malfunction. And there are not a communication error and a communication stop. Voltage input circuit (Normal / Common), Current input circuit (Common), Auxiliary supply circuit (Normal / Common) (2) Square wave impulse noise...

  • Page 60: Input/Output Functions

    Error detection CRC-16 Topology Multidrop Please reference to the Model PR720 Power and Energy Meter Modbus RTU Mode Protocol User’s Manual (IM 77C01E31-10EN) for the details of communication output data. Possible output : Watt-hour or var-hour. Output form : Optical MOS-FET relay. 1a contact...

  • Page 61: Maintenance And Check

    SFLC-212-181 Item Specification About three types of following functions (it changes by setting), it Function can carry out by applying a voltage signal from the outside. Alarm output is reset (output OFF). Alarm reset Please refer to "4.3.6 Reset" about operation by the switch. The maximum/minimum value is reset (it updates to the Maximum / Minimum value instantaneous value at the time).

  • Page 62: Test

    SFLC-212-181 7.3 Test SET and MODE Test mode is selected by pressing SET and MODE 3 seconds switches continuously for longer than 3 seconds. Pushing MODE switch performs movement of setting DISPLAY Input wiring check item. The present mode can be returned to the display MODE mode by pressing DISPLAY switch.
  • Page 63 SFLC-212-181 (2) Alarm output check Even if this product does not have input, it can perform ON/OFF test of an alarm output (relay-contact output). Whenever it pushes SET , ON and OFF change. Default: OFF The status of lights at the output time.

  • Page 64: Maintenance

    SFLC-212-181 (5) LCD display check It can check a liquid crystal display. Whenever it pushes SET , a display changes. Default: Main monitor “LCD” display 7.4 Maintenance (1) Please do not make a wiring change of the input and auxiliary supply in an energization. (2) In case you check an output in an energization, please warn to be unable to touch output wiring and a human body to an input and an auxiliary supply terminal.

  • Page 65: Appendix Table 1 To

    SFLC-212-181 Appendix table 1-1 Active power range, watt-hour multiplier rate table (Three-phase three-wire) V r ange 750kV 500kV 375kV 400kV 300kV 270kV 255kV 210kV 180kV 150kV 120kV 105kV 90kV 45kV 30kV ( VT77kV/110V) ( VT66kV/110V) ( VT33kV/110V) ( VT22kV/110V) M ul t i pl yi ng ( VT550kV/110V) ( VT380kV/110V) ( VT275kV/110V)
  • Page 66 SFLC-212-181 Appendix table 1-2 Active power range, watt-hour multiplier rate table (Three-phase three-wire) V r ange 25kV 24kV 18kV 18kV 15kV 9000V 4500V 3000V 2400V 1500V 1200V 600V ( VT11kV/110V) ( VT6600/110V) ( VT3300/110V) ( VT2200/110V) ( VT1650/110V) ( VT1100/110V) ( VT880/110V) ( VT480/110V) M ul t i pl yi ng...
  • Page 67 SFLC-212-181 Appendix table 1-3 Active power range, watt-hour multiplier rate table (Three-phase three-wire) V r ange 600V 600V 500V 300V 150V ( VT460/110V) ( VT440/110V) ( VT380/110V) ( VT220/110V) ( 110V) M ul t i pl yi ng M ul t i pl yi ng f act or f act or [ W ]...
  • Page 68 SFLC-212-181 Appendix table 2 Active power range, watt-hour multiplier rate table (Single-phase 3-wire) V r ange 150V ( 110V) M ul t i pl yi ng f act or [ W ] A r ange 1000 1200 1500 7. 5A 1600 2000 2400...
  • Page 69 SFLC-212-181 Appendix table 3-1 Active power range, watt-hour multiplier rate table (Single-phase two-wire) 400kV 270kV 120kV V r ange 750kV 500kV 375kV 300kV 255kV 210kV 180kV 150kV 105kV 90kV 45kV 30kV ( VT77kV/110V) ( VT66kV/110V) ( VT33kV/110V) ( VT22kV/110V) M ul t i pl yi ng ( VT550kV/110V) ( VT380kV/110V) ( VT275kV/110V)
  • Page 70 SFLC-212-181 Appendix table 3-2 Active power range, watt-hour multiplier rate table (Single-phase two-wire) V r ange 25kV 24kV 18kV 18kV 15kV 9000V 4500V 3000V 2400V 1500V 1200V 600V ( VT11kV/110V) ( VT6600/110V) ( VT3300/110V) ( VT2200/110V) ( VT1650/110V) ( VT1100/110V) ( VT880/110V) ( VT480/110V) M ul t i pl yi ng...
  • Page 71 SFLC-212-181 Appendix table 3-3 Active power range, watt-hour multiplier rate table (Single-phase two-wire) 600V 600V 500V 300V 150V V r ange ( VT460/110V) ( VT440/110V) ( VT380/110V) ( VT220/110V) ( 110V) M ul t i pl yi ng M ul t i pl yi ng f act or f act or A r ange...
  • Page 72 IM 77C01E31-01EN...
  • Page 73 Revision Information Title : Model PR720 Power and Energy Meter User’s Manual  Manual No. : IM 77C01E31-01EN  May 2021/1st Edition Newly published n Written by Yokogawa Electric Corporation n Published by Yokogawa Electric Corporation 2-9-32 Nakacho, Musashino-shi, Tokyo 180-8750, JAPAN...
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