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
Parameter Setting Operations
3-15
IM 77C01E01-01E
1
2
3
4
5
A
I
3.8 Setting Demand Measurement Conditions
Demand Alarm Point screen
11
12
14
15
13
Demand Alarm Release
Function screen
Demand Alarm Release
Function Setting screen
Demand Alarm Release
Function Setting screen
The screen changes to the one
for setting the parameter .
Demand Alarm Release
Function screen
Demand Alarm Release
Function Setting screen
The parameter
(demand alarm release function)
appears.
The setpoint is confirmed and the
PR300 returns to the Demand Alarm
Point screen.
The setpoint is confirmed and the PR300 returns
to the Demand Alarm Release Function screen.
Demand alarm point setting
completed.
Demand alarm release function
setting completed.
Press once.
Press once.
Using or ,
select the setpoint.
Press once to
blink the setpoint.
Press once while
the setpoint is blinking.
To return to the Demand Measurement
Menu screen, press .
To return to the Measured Value
screen, hold down .
If you do not operate any key for more
than 5 minutes on the Parameter
screen, the PR300 automatically
returns to the Measured Value screen.
NOTE
If the demand period and demand alarm mask time do not satisfy the following conditional expres-
sion, the updated demand period or demand alarm mask time will not be incorporated but revert to
the value before change.
Demand alarm mask time Demand period
Parameter Setting Types and Ranges
Demand measurement menu
Demand power/current
Demand period
Demand alarm mask time
Demand alarm point
Demand alarm release
function
Selection
Integral
numeric
value
Integral
numeric
value
Integral
numeric
value
Selection
Active power
Current
1 to 60 (min)
(Demand alarm mask time to 60) (min)
1 to 59 (min)
(1 to demand period) (min)
1 to 1000 (kW): When active power is
selected, or 1 to 1000 (A): When current is
selected
Automatic release
Manual release
Active power
1
100
Automatic
release
30
Menu to shift to the parameters of
demand measurement
Parameter Symbol Parameter Name
Setting
Type
Setting Range (Details)
Initial Value
(Factory-set
Value)