Energy Meter Manual
Table Of Contents
- Introduction
- Notices
- Checking the Package
- Checking the Model and Suffix Codes
- Contents
- Chapter 1 Installation and Wiring
- 1.1 Installation with the ANSI 4-inch Round Form or JIS 110-square Instrument Size
- 1.2 Installation with the DIN 96-square Instrument Size
- 1.3 Wiring
- Crimping Terminal Recommendations
- Single-phase two-wire system (voltage input, current input, power supply)
- Single-phase three-wire system (voltage input, current input, power supply)
- Three-phase three-wire system (voltage input, current input, power supply)
- Three-phase four-wire system (voltage input, current input, power supply)
- Three-phase four-wire system (2.5 element) (voltage input, current input, power supply)
- Other Wiring
- 1.4 Attaching the Dust Cover and Terminal Cover
- Chapter 2 Preparations before Starting Measurement (Set up the PR300 First)
- Chapter 3 Parameter Setting Operations
- 3.1 Basic Parameter Setting Operations
- 3.2 Setting the VT and CT Ratios
- 3.3 Setting the Integrated Low-cut Power
- 3.4 Setting RS-485 Communication Conditions
- 3.5 Setting Ethernet Communication Conditions
- 3.6 Setting Pulse Output Conditions
- 3.7 Setting Analog Output Conditions
- 3.8 Setting Demand Measurement Conditions
- 3.9 Setting the Measured Value Display Pattern
- 3.10 Setting the “Indicator-out” Mode and Locking Parameters
- Chapter 4 Operation for Display of Measurement Items and Measurement Method
- 4.1 Measurement Items
- 4.2 Switching Display Pattern
- 4.3 Displaying Measured, Instantaneous, and Maximum/Minimum Values
- Example Display and Measuring Ranges of Active Power (Regenerative Power)
- Example Display and Measuring Ranges of Reactive Power
- Example Display and Measuring Ranges of Apparent Power
- Example Display and Measuring Ranges of Voltage
- Example Display and Measuring Ranges of Current
- Example Display and Measuring Ranges of Power Factor
- Example Display and Measuring Ranges of Frequency
- How to Switch between Instantaneous Value, Maximum Value, and Minimum Value
- 4.4 Phase Switching for Voltage and Current
- 4.5 Displaying Energy Values
- 4.6 Resetting Measured Values
- 4.7 Demand Measurement (Optional Measuring Function)
- Chapter 5 Troubleshooting
- Appendix
- Appendix 1 Specifications of PR300
- Measuring Function
- Power Items and Equations
- Input Specifications
- Digital Input Specifications
- Analog Output Specifications (additional output function)
- Pulse Output Specifications (additional output function)
- Demand Alarm Output Specifications (optional measuring function)
- Communication Specifications
- Standard Performance
- Safety and EMC Standards
- Environmental Conditions
- Mounting and Shape
- Appendix 2 System Reset
- Appendix 3 Parameter Map
- Appendix 4 Parameter List
- Appendix 5 Alphanumeric Characters Table for 7-segment LED
- Appendix 1 Specifications of PR300
- Index
- A
- C
- D
- E
- H
- I
- M
- O
- P
- R
- S
- T
- V
- W
- Wiring diagram
- Single-phase two-wire system
- Single-phase three-wire system
- Three-phase three-wire system
- Three-phase four-wire system
- Three-phase four-wire system (2.5 element)
- Analog output
- Demand alarm output
- Demand alarm release
- Ethernet communication
- Integration control signal
- Palse output
- RS-485 communication
- Wiring diagram
Preparations before Starting Measurement (Set up the PR300 First)
2-1
IM 77C01E01-01E
1
2
3
4
5
A
I
Chapter 2 Preparations before Starting Measurement (Set up the PR300 First)
2.1 Component Names and Functions
Power lamp < 1 >
Demand Alarm lamp < 9 >
Pulse Output lamp <10>
Communication lamp <11>
< 2 > Phase and Wire
System lamps
< 3 > Input Range lamps
< 4 > Measured Value display
Upper display
Phase Indication lamps < 7 >
< 5 > Unit lamps
DEMAND lamp < 8 >
<12> Operation keys
MAX and MIN lamps < 6 >
Middle display
Lower display
Name
<1> Power lamp
<2> Phase and Wire
System lamps
<3> Input Range lamps
<4> Measured Value
display
<5> Unit lamps
<6> MAX and MIN lamps
<7>
Phase Indication lamps
<8> DEMAND lamp
<9> Demand Alarm lamp
<10> Pulse Output lamp
<11> Communication lamp
<12> Operation keys
Display Color
Green
Green
Green
Red
Red
Red
Red
Red
Red
Green
Green
Description
Lights up and remains lit when the PR300 is turned on and operating normally.
Blinks (4 times/second) if a communication error occurs, and continues to blink
until the PR300 returns to normal.
The phase and wire system option set in the PR300 lights up.
The voltage range option set in the PR300 and the current range (rated input) option
specified at the time of ordering light up.
Shows a measured value of power, energy, etc. Also shows a parameter symbol and
its setpoint at the time of parameter setting.
Show the unit symbol of a measured value for each measurement item. These unit
symbols are shown in combination depending on the type of measured value.
Light up when the maximum or minimum measured value is displayed.
Light up to tell for which phase the voltage or current value is being measured.
Lights up when the measured value of demand power or demand current is
displayed. (Only supported for a PR300 with the demand measuring function.)
Lights up if the demand value exceeds the demand alarm point at any point in time
other than the demand alarm mask time.
Lights up when the output is turned on in the pulse output mode and goes out when
the output is turned off.
Blinks while RS-485 or Ethernet communication is in progress.
On the Measured Value screen, this key is used, for example, to switch the display
pattern. Also used to set parameters on the Parameter screen.
On the Measured Value screen, these keys are used, for example, to move from one
digit to another in an energy reading. Also used to set parameters on the Parameter
screen.
On the Measured Value screen, this key is used, for example, to show the
maximum/minimum value. Also used to set parameters on the Parameter screen.
On the Measured Value screen, this key is used, for example, to switch the phase of
voltage/current. Also used to set parameters on the Parameter screen.
This key is used to start or stop demand measurement. The lamp (green) in the key
lights up in the demand measurement.