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
1-9
IM 77C01E01-01E
1
1
2
3
4
5
A
I
Installation and Wiring
1.4 Attaching the Dust Cover and Terminal Cover
WARNING
As there is a danger of electric shock, do not attach the dust cover and terminal cover while the wires are live.
NOTE
● Attach the dust cover before attaching the terminal cover.
● The recommended tightening torque for the screws for attaching the dust cover and terminal cover
is 0.4N•m.
1
Insert the two protruding portions on the underside of
the dust cover into the grooves on the upper side of
the PR300 as shown in the diagram below.
1
Complete the wiring to the terminals 2, 4, 6, 8, 23,
24 and 25, then secure the terminal cover in the
open state shown in the diagram below with the two
screws provided.
2
Complete the wiring to other terminals with the
terminal cover open shown in the diagram below.
3
Close the terminal cover and secure it with the
screw provided as shown in the diagram below.
2
Secure the dust cover with the screw provided as
shown in the diagram below.
Dust cover
(standard
accessory)
Attaching the Dust Cover Attaching the Terminal Cover
Insert into
the ▼
marked
grooves