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
A-12
IM 77C01E01-01E
Appendix 4 Parameter List
Parameter
Symbol
Display
Order
Parameter Name MEMO
Setting
Type
Setting Range (Details)
Initial Value
(Factory-
set Value)
1
2
3
4
4-1
4-2
4-3
4-4
4-5
4-6
5
5-1
5-2
5-3
5-4
5-5
5-6
5-7
1.00
1
0.05
*1 Only the PR300 with the Ethernet communication function can be selected. *2 Select "8" if you selected Modbus/RTU for the protocol.
*3 Select NONE for Parity, 1 bit for Stop bit, and 8 bits for Data length if you have selected PR201 original for the protocol option.
192
168
1
255
255
255
1
Menu to shift to the parameters of
Ethernet communication
VT ratio
CT ratio
Integrated low-cut power
RS-485 communication menu
Station number
1 to 6000
0.05 to 32000
0.05 to 20.00 (%)
Menu to shift to the parameters of
RS-485 communication
1 to 99
0 to 255
0 to 255
0 to 255
0 to 255
0 to 255
0 to 255
0 to 255
PC link without checksum
PC link with checksum
Modbus/ASCII
Modbus/RTU
PR201 original
Modbus/TCP (*1)
2400 bps
9600 bps
19200 bps
NONE
EVEN
ODD
1 bit
2 bits
8 bits
7 bits
Protocol
Baud rate
Parity (*3)
Stop bit (*3)
Data length (*2) (*3)
Ethernet communication menu
(Displayed only for a PR300 with the
Ethernet communication function.)
IP address-1
IP address-2
IP address-3
IP address-4
Subnet mask-1
Subnet mask-2
Subnet mask-3
Integral
numeric
value
Floating-point
numeric
value
Fixed-point
numeric
value
Integral
numeric
value
Selection
Selection
Selection
Selection
Selection
Integral
numeric
value
Integral
numeric
value
1
PC link
with
checksum
9600 bps
NONE
1
8