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Summary of Contents for YOKOGAWA Power Series Plus IM 2493VVV-1
- Page 1 Plus Users Power Series Manual Plus Power Series 3 in 1 AC Voltage Digital Switchboard Meter IM 2493VVV-1 IM 2493VVV-1 Revision 1, October 1999...
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Page 2: Table Of Contents
Changing the rolling average setting ...............9 Changing the network address setting.............9 Changing the baud rate setting..............10 Analog Output Scaling ...................10 Changing the Analog Output Settings............11 Connection Diagrams ....................14 Mounting and Outline..................15 IM 2493VVV-1 edition, October 1999 All Rights Reserved, Copyright 1999, Yokogawa Corporation of America... -
Page 3: General Description
The Yokogawa Corporation of America POWER SERIES digital switchboard meters incorporate the latest DSP ASIC technology. The ASIC circuitry, developed by Yokogawa, has created a family of user-friendly, field- adjustable meters. When ordering the 2493 meter, the following options are available: AC Measuring Function(s): Volts, Amps, Watts, VARs, Power Factor, and/or Frequency. - Page 4 1. GENERAL DESCRIPTION operation and maintenance of the Equipment, or normal wear and tear on disposable or consumable parts. This warranty shall be void in the event of unauthorized modification or servicing of the Equipment. The foregoing warranty is exclusive and in lieu of any other warranties of quality, whether expressed or implied (including any warranty of merchantability or fitness for a particular purpose).
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Page 5: Specifications
2. SPECIFICATIONS 2. SPECIFICATIONS 3 in 1 AC Voltage Specifications PRODUCT FUNCTION: AC Volts, 3 Phases, 3 Wires or 4 Wires ACCURACY: 0.2% of Reading 0.1% of Full Scale DISPLAY UPDATE RATE: Channel A – 80 milliseconds Channel B & C – 160 milliseconds OPERATING TEMPERATURE RANGE: -20 to +60 Celsius STORAGE TEMPERATURE RANGE: -40 to +85 Celsius... -
Page 6: Configuration
3. CONFIGURATION 3. CONFIGURATION Plus CONFIGURING THE 2493 POWER SERIES METER Plus The new triple-display POWER SERIES can be configured for voltage and current inputs from instrument transformers, as well as analog outputs, RS-485 network address and a rolling average display. All set-up functions can be performed using the four push-buttons on the front panel (see below) or via RS-485 communications. - Page 7 3. CONFIGURATION To view the configuration settings, press Mode twice (Mode – Mode) and then press Set. The first setting – the Primary Transformer (PT) ratio - will be displayed.. To see the other settings, press Next. You can scroll through all the settings by pressing Next.
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Page 8: Keymap
4. KEYMAP 4. KEYMAP This flowchart depicts the front panel key options when operating in normal reading mode. The options are: Mode-Mode – Invokes change setting menu (see flow chart page 6). Mode – Next – Toggle from Line-Line to Line-Neutral display. Mode –... -
Page 9: Changing Settings
5. CHANGING SETTINGS 5. CHANGING SETTINGS Plus This flowchart illustrates the operation of changing settings of the POWER SERIES meter using the push-keys on the front panel. Note: This flowchart gives information pertaining to units equipped with YCA communications option, or no communications option. -
Page 10: Changing Settings
5. CHANGING SETTINGS Changing the Potential Transformer (pt) ratio setting When you reach the PT setting, the primary value is displayed in the middle row and the secondary value is displayed in the bottom row. Press Set and the first digit of the primary value will begin blinking. -
Page 11: Changing The Rolling Average Setting
5. CHANGING SETTINGS Primary and Secondary must be between 1.000 and 1250. You will get “ErrH” or ErrL” if you try to advance to Confirm mode with an incorrect ratio. If you try to save a ratio value that exceeds the precision of the unit, that value will be automatically rounded off. -
Page 12: Changing The Baud Rate Setting
5. CHANGING SETTINGS Changing the Baud Rate setting When you reach the setting, press Set and the whole value will begin blinking. To change it to the next choice, press Inc. You can scroll through all the choices with the Inc key. Those choices are 9600 (default), 4800, 2400 and 1200. When you have reached the desired choice, press Set. -
Page 13: Changing The Analog Output Settings
5. CHANGING SETTINGS When the settings are changed to: PT ratio: 1 to 1 LO: 20 Volts HI: 120 Volts The new relationship of input and output is shown at right. 0.25 0.75 DC Current Out (mA) Next the PT ratio is changed to 2 to 1 (2:1). Note: The HI and LO automatically change to match the new ratio whenever the PT ratio is changed. - Page 14 5. CHANGING SETTINGS When you have set the digits as you want them, press Set. The decimal point will now be blinking. You can then move the decimal point to the right by pressing Inc. Once it has reached the last position it will jump to the first position on the next press of Inc.
- Page 15 5. CHANGING SETTINGS Model Default Minimum Default Maximum Minimum Span 150 Volts 150.0 162.0 300 Volts 300.0 324.0 The above values are without any scaling by the PT ratio. If the PT ratio is greater than 1 to 1, than the output setting values above must be multiplied by the PT ratio.
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Page 16: Connection Diagrams
6. CONNECTION DIAGRAMS 6. CONNECTION DIAGRAMS Connection Diagrams WARNING: All circuits should be de-energized when making connections to the rear terminal block. IM 2493VVV-1... -
Page 17: Mounting And Outline
6. CONNECTION DIAGRAMS Mounting and Outline IM 2493VVV-1...
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