Reference Standard - Applied Precision Ltd.

Reference Standard
Models
RS 2120
RS 2320
User’s Guide
Version 3.2c
Reference Standard RS 2x20
User’s Guide
Content
1.
Introduction ............................................................................................................................. 3
2.
Device Hardware Overview .................................................................................................... 4
2.1 Front Side ................................................................................................................................. 4
2.2 Rear Side .................................................................................................................................. 4
3.
Device Software Overview ..................................................................................................... 5
3.1 Measurement ............................................................................................................................ 5
3.1.1 Energy Measurement ........................................................................................................ 8
3.1.2 Graphical presentation ...................................................................................................... 9
3.2 Menu ....................................................................................................................................... 11
3.2.1 Measurement Settings ..................................................................................................... 12
3.2.2 System Settings .............................................................................................................. 14
3.2.3 Information Screen .......................................................................................................... 15
4.
Remote Interface ................................................................................................................... 17
4.1 Connection to PC .................................................................................................................... 17
4.2 Remote Communication .......................................................................................................... 17
4.2.1 Commands Summary ...................................................................................................... 18
4.2.2 Commands Description ................................................................................................... 19
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User’s Guide
1. Introduction
Reference Standard RS 2320
The Reference Standard RS 2x20 is a precision single-phase (RS 2120) or three-phase (RS 2320)
reference meter for electrical power and energy measurement up to 120 A.
Measurement based on precision A/D conversion and DSP technology enables accurate high-speed
real time evaluation of all main and informative quantities.
Beyond measurement of power, voltage, current and phase the device indicates voltage sequence
and registers active, reactive and apparent energy. Device measures and graphically displays
distortion and wave-form of measured signals.
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Reference Standard RS 2x20
User’s Guide
2. Device Hardware Overview
2.1 Front Side
Front side of RS 2320B
2.2 Rear Side
Rear side of RS 2320B
Mains
Case/Earth
GND
- Power supply
- Metal parts of the device case and the guard wire of the network socket
- Ground for digital and analogue circuits
RS232
USB
- Communication bus RS 232
- Communication bus USB
AUX
FIN
FOUT
- Auxiliary connector (unused – prepared for future)
- Frequency input (unused – prepared for future)
- Frequency output
L1, L2, L3
In
Out
U
N
- Three measurement channels
- Current input connectors (red)
- Current output connectors (black)
- Active voltage terminals
- Reference voltage terminal (common for all channels)
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3. Device Software Overview
The device is equipped with color 3.5″ TFT LCD display and alpha-numeric keyboard.
Screen is divided into 3 zones:
1
Header
 page name
 keyboard mode
2
Info
 measured values
 calculated values
 graphs
 parameters etc.
1
Functions
3
2

graphical presentation of
functions of keys F1 – F4
3
3.1 Measurement
Main page for RS 2120 Load Values shows actual measured and calculated values:
List of displayed quantities:
U .........
I ..........
P .........
Q .........
S .........
λ .........
φ ..........
f ..........
Voltage
Current
Active Power
Reactive Power
Apparent Power
Power Factor
Current Phase
Frequency
RS 2120 - Load Values page
Control keys:
F1
F2
F3
F4
............................
............................
............................
............................
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Energy Values
Vector Diagram
Harmonics
Menu
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Reference Standard RS 2x20
User’s Guide
Main page for RS 2320 Load Values shows actual measured and calculated values:
List of displayed quantities:
U .........
I ...........
P ..........
Q .........
S ..........
λ ..........
........
........
f ...........
L1xx ....
Voltage
Current
Active Power
Reactive Power
Apparent Power
Power Factor
Voltage Phase
Current Phase
Frequency
Phase Sequence (L123 or L132)
RS 2320 - Load Values page
Control keys:
F1
F2
F3
F4
............................
............................
............................
............................
Energy Values
Vector Diagram
Harmonics
Menu
Next pages Load Values:
RS 2320 - Load Values page L1
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RS 2320 - Load Values page L2
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User’s Guide
RS 2320 - Load Values page L3
Control keys:
F1
F2
F3
F4
............................
............................
............................
............................
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Energy Values
Vector Diagram
Harmonics
Menu
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Reference Standard RS 2x20
User’s Guide
3.1.1 Energy Measurement
Page Energy Values can be accessed from Load Values page using key F1 and shows measured
and calculated energy values.
Active, reactive and apparent energies are accumulated beside the measurement and shown on this
page. Accumulation of these energies can be stopped and started again (key F2) or just restarted by
key F3.
List of displayed quantities:
RS2320 - Energy Values page
U .........
I ...........
ΣP .......
ΣQ .......
ΣS .......
EP ........
EQ ........
ES ........
ΣEP ......
ΣEQ ......
ΣES ......
f ...........
L1xx ....
Voltage
Current
Sum of Active Powers
Sum of Reactive Powers
Sum of Apparent Powers
Active Energy
Reactive Energy
Apparent Energy
Sum of Active Energies
Sum of Reactive Energies
Sum of Apparent Energies
Frequency
Phase Sequence (L123 or L132)
List of displayed quantities:
U .........
I ...........
P .........
Q .........
S .........
EP ........
EQ ........
ES ........
Voltage
Current
Active Power
Reactive Power
Apparent Power
Active Energy
Reactive Energy
Apparent Energy
RS2120 - Energy Values page
Control keys:
F1
F2
F3
F4
8
............................
............................
............................
............................
Load Values page
Stop / start online energy accumulation
Clear energy registers
Menu
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3.1.2 Graphical presentation
Graphical Presentation pages which can be activated from Energy Values page by repeated usage of
F1 key show graphical presentation of measured signals.
Vector Diagram page
Harmonics page
Curve page
Harmonics View
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Reference Standard RS 2x20
User’s Guide
Vector diagram has two parameters which can be configured in Measurement Settings:
 position of reference zero axis (vertical or horizontal)
 reference unit (voltage or current) which is displayed on reference zero axis
Harmonics screen shows harmonics up to 31st harmonic. 10 harmonics are displayed on one screen.
Scrolling to other harmonics can be done by ◄ ► arrow keys.
Combination of showed signals (I1+I2+I3, U1+U2+U3, U1+I1, U2+I2 or U3+I3) can be in Harmonics
and Curve screens chosen by ▼▲ arrow keys in Harmonics and Curve pages.
Harmonics View screen shows measured values (amplitude and phase) of all harmonics.
Control keys (for three graphical presentation pages):
F1 ......................... Switch to another graphical presentation pages or back to main page
F2 ......................... Show Harmonics View in Harmonics screen
F4 ......................... Menu
▼▲ ....................... Choose combination of showed signals in Harmonics and Curve screens
◄ ► ...................... Scroll next/previous 10 harmonics in Harmonics screen
ESC ...................... Exit (return to main measurement page)
Control keys (for Harmonics View screen):
F1, ESC ................ Exit (return back to Harmonics screen)
F2 ......................... Switch to next channel (L1<->L2<->L3<->L1)
F3 ......................... Switch to next channel (U<->I<->U)
▼▲◄ ► ............... Scrolling of content
PgDn, PgUp ........... Paging of content
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3.2 Menu
Menu enables access to settings, database, information about device and device calibration.
It can be activated by key F4.
Menu page
Content:
1. Measurement Settings ............... measurement settings
2. System Settings .......................... system settings
3. Info ............................................... information about the device
4. Calibration ................................... calibration of the device
Control keys:
F1 or 1 ......................................... measurement settings
F2 or 2 ......................................... system settings
F3 or 3 ......................................... info
F4 or 4 ......................................... calibration
Down, Up ..................................... movement on screen
OK ................................................ confirmation of selected item
ESC .............................................. exit of menu
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Reference Standard RS 2x20
User’s Guide
3.2.1 Measurement Settings
Measurement Settings page contains parameters of measurement mode. Page is showed in two
screens and switching between them is done by key F4.
Measurement Settings page 1/3
Measurement Settings page 2/3
Measurement Settings page 3/3
Content:
ENERGY OUTPUT .................. settings of energy (impulse) output
State ............................ type of measured energy: Active, Reactive or Apparent Energy or
Fixed frequency
Fixed freq. ................... value of fixed frequency generated on red impulse LED or on
connected BNC cable if parameter State has value Fixed frequency
Factor .......................... constant of device WS
Factor unit .................. unit of parameter Factor: i/kWh, i/Wh, i/Ws, i/kWs, kWh/i, Wh/i, Ws/i
or kWs/i
AUX output .................. enable or disable the AUX output for currently measured signal
Channel Lx ............................. selection of individual channels (L1, L2 or L3) for impulse output
functions. The value of the parameter is ON or OFF for the switchedon or switched-off selection of the appropriate channel, respectively.
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Connect. type ......................... connection type: 3P4W, 3P3W, 2P3W or 1P2W (see appendix
Connecting device chapter)
RANGE (Input A / Input B) ....... settings of ranges
Auto ............................. automatic range selection: ON (enabled) or OFF (disabled). Device
chooses best suitable range depending on measured values if
automatic range selection is enabled.
Value ............................ manually selected range (valid if parameter Auto is OFF)
VECTOR DIAGRAM ................ settings of vector diagram displaying
Zero axis ...................... position of reference zero axis: Vertical or Horizontal
Reference .................... reference unit: Voltage or Current
FREQUENCY .......................... settings of frequency measurement
Default freq. ................ default measurement frequency: 50 or 60 Hz
Sync. chnl. .................. synchronization channel used for frequency measurement: UL1,
UL2, UL3, IL1, IL2, IL3 or AUTO (selection depending on amplitude)
ENERGY MEASUREMENT ..... settings of energy measurement
Unit .............................. unit of energy: Ws or kWh
REACTIVE POWER MEAS ..... Setting of reactive power measurement
Method ......................... Measurement method: True or Cross connected
Control keys:
F1, ESC ................... Exit (return to previous page)
F2 ............................ Load default values (only for parameters in shown page!)
F3 ............................ Save actual values of all Measurement Settings parameters into
memory (saved values will be loaded after next switch on)
F4 ............................ Switching between screens 1/3, 2/3 and 3/3
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Reference Standard RS 2x20
User’s Guide
3.2.2 System Settings
System Settings page contains general parameters of the system of the device.
Page is showed in two screens and switching between them is done by key F4.
System Settings screen 1/2
System Settings screen 2/2
Content:
Language ............................... selection of language of devices user interface
BAUDRATE ............................ settings of baud rate of device communication interfaces
RS-232 ......................... baud rate of RS-232 communication interface: 300, 600, 1200, 2400,
4800, 9600, 19200, 28800, 38400, 57600 or 112000
USB ............................. baud rate of USB communication interface: 300, 600, 1200, 2400,
4800, 9600, 19200, 28800, 38400, 57600 or 112000
DISPLAY ................................. Setting of display content
Resolution .................. Resolution of showed measured and calculated values in one phase
screens: Standard (5 digits), High (6 digits) or Maximal (7 digits)
Warnings ................................ Enable (ON) / disable (OFF) showing of system warnings (and
errors)
BACKLIGHT ........................... settings of backlight of display
Intensity ....................... backlight intensity: 10%, 20% … 90% or 100%
Auto off timeout ......... automatic backlight switch-off time: 1 / 2 / 5 / 10 / 20 / 30 min or
OFF (inactive)
SOUNDS ................................. settings of sounds
Keypad beep ............... acoustic indication of keys pressing: ON or OFF
Control keys:
F1, ESC ....................... Exit (return to previous page)
F2 ................................ Load default values (only for parameters in shown screen!)
F3 ................................ Save actual values of all System Settings parameters into memory
(saved values will be loaded after next switch on)
F4 ................................ Switching between screens 1/2 and 2/2
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3.2.3 Information Screen
Information screen shows basic information about the device and connected accessories.
Page is showed in two screens and switching between them is done by key F4.
Information screen 1/3
Information screen 2/3
Information screen 3/3
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Reference Standard RS 2x20
User’s Guide
Content:
DEVICE ...................................
Serial No. ....................
HW1 ver. .....................
HW2 ver. .....................
FW1 ver. ......................
FW2 ver. ......................
GUI ver. .......................
POWER SUPPLY ...................
Voltage 1 .....................
Voltage 2 .....................
Voltage 3 .....................
INPUT A ..................................
Serial No. ....................
Ranges ........................
INPUT B ..................................
Serial No. ....................
Ranges ........................
type of the device
serial number of the device
hardware version of upper (high level) part of the device
hardware version of bottom (low level) part of the device
firmware version of upper (high level) part of the device
firmware version of bottom (low level) part of the device
version of user interface screens (Graphical User Interface)
auxiliary voltages (specified for diagnostic purposes)
power supply voltage 1
power supply voltage 2
power supply voltage 3
type of the voltage input
serial number of the voltage input
ranges of the voltage input
type of the current input
serial number of the current input
ranges of the current input
Control keys:
F1, ESC ....................... exit of the screen
F4 ................................ switching between screens 1/2 and 2/2
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4. Remote Interface
4.1 Connection to PC
Device can be connected to computer via communication interface USB or RS-232.
Driver required for connection of RS 2x20 to PC via USB communication interface is
FTDI Virtual COM port (VCP) driver (Not Microsoft WHQL certified)
Newest version of required driver is available from FTDI website:
http://www.ftdichip.com/Drivers/VCP.htm
Maybe not actual but tested version of driver is available in Applied Precision’s website from link:
http://www.appliedp.com/download/driver/ftdi-vcp.zip
After unpacking the zip file and successful installation of the driver new virtual COM port will appear in
operating system. For communication with the device the correct COM port have to be chosen in PC
in communication software.
4.2 Remote Communication
Device control, results readout and measured values collection remotely is performed using device
commands compatible with SCPI standard (Standard Commands for Programmable Instruments).
Main rules of SCPI standard:

parentheses { } restrict parameter in the command strain

parentheses [ ] restrict optional parameters or parts of commands

parentheses < > restrict parameter, which is due to be replaced by the value

perpendicular line ( | ) separate options, from which exactly one has to be chosen
 character case in the command is optional (command SYST:VERS? is identical with
sYsT:VeRs?)
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Reference Standard RS 2x20
User’s Guide
4.2.1 Commands Summary
*IDN?
*RST
SYST
:ERR?
:SERN?
:VERS?
:HWV?
:DATV?
:CLAS?
:TIM?
:TIM
:SET:COM
:SET:COM?
:SET:COM1?
:SET:COM1 {<baudrate (1200-115200)>}
:SET:COM2?
:SET:COM2 {<baudrate (1200-115200)>}
:CONF:SAVE
:CONF:LOAD
MEAS
:VOLT:AC?
:VOLT:AC:PHAS?
:VOLT:AC:SUM:SQ?
:CURR:AC?
:CURR:AC:PHAS?
:CURR:AC:SUM:SQ?
:POW:AC[:ACT]?
:POW:AC:REAC?
:POW:AC:APP?
:POW:AC:FACT?
:POW:AC:SUM:ACT?
:POW:AC:SUM:REAC?
:POW:AC:SUM:APP?
:FREQ?
:ENER:STAR
:ENER:STOP
:ENER:RES
:ENER:STAT?
:ENER:ACT?
:ENER:ACT:K?
:ENER:REAC?
:ENER:REAC:K?
:ENER:APP?
:ENER:APP:K?
:SIGN? {<phase (0|1|2)>},{<unit (0|1)>} ,{<harmonic (0-31)>}
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4.2.2 Commands Description
*IDN?
Request for the device identification string.
*RST
Device reset. This command has the same effect as the GPIB bus system command DCL.
SYST:ERR?
Request for the error announcement from the error announcement register. This register is a FIFO
type (=first in first out).
SYST:SERN?
Request for the device serial number.
SYST:VERS?
Request for the device firmware version.
SYST:HWV?
Request for the device hardware version.
SYST:DATV?
Request for the version of data memory.
SYST:CLAS?
Request for the device class.
SYST:TIM?
Request for device’s date & time.
SYST:TIM {<date&time>}
Setting of date & time of the device. Parameter have to be in format “YYYY-MM-DD hh:mm:ss”.
Example: "2008-09-25 11:55:20".
SYST:SET:COM1?
Request for the actual speed (baud rate) of serial communication.
SYST:SET:COM1 {<baudrate (1200-115200)>}
Setting of speed (baud rate) of serial communication. Allowed baud rate values are :
1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, 115200.
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Reference Standard RS 2x20
User’s Guide
Measurement Commands
Measurement commands return measured values in form of a set of three real numbers without unit.
Values are in classic or exponential format (depends on value and firmware version) with max. 6
decimal places and separation of decimal part of number is made by point.
Three values are separated by comma or comma followed by space (depends on firmware version).
Examples of return string:
220.123456,221.234567,219.345678
+3.456789E-03, +4.567891E-03, +5.678912E-03
MEAS:VOLT:AC?
Request for voltage values.
MEAS:VOLT:AC:PHAS?
Request for phases between voltages.
MEAS:VOLT:AC:SUM:SQ?
Request for sum of square voltages.
MEAS:CURR:AC?
Request for current values.
MEAS:CURR:AC:PHAS?
Request for phases between current and voltage in each phase.
MEAS:CURR:AC:SUM:SQ?
Request for sum of square currents.
MEAS:POW:AC[:ACT]?
Request for active power values.
MEAS:POW:AC:REAC?
Request for reactive power values.
MEAS:POW:AC:APP?
Request for apparent power values.
MEAS:POW:AC:FACT?
Request for power factors.
MEAS:POW:AC:SUM:ACT?
Request for sum of active powers.
MEAS:POW:AC:SUM:REAC?
Request for sum of reactive powers.
MEAS:POW:AC:SUM:APP?
Request for sum of apparent powers.
MEAS:FREQ?
Request for frequency.
MEAS:ENER:STAR
Start of energy accumulation (if stopped).
MEAS:ENER:STOP
Stop of energy accumulation (if started).
MEAS:ENER:RES
Reset (clearing to zero) of energy accumulation values.
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MEAS:ENER:STAT?
Request for status of energy accumulation. Answer is 0 (stopped) or 1 (started).
MEAS:ENER:ACT?
Request for active energy values in Ws.
MEAS:ENER:ACT:K?
Request for active energy values in kWh.
MEAS:ENER:REAC?
Request for reactive energy values in vars.
MEAS:ENER:REAC:K?
Request for reactive energy values in kvarh.
MEAS:ENER:APP?
Request for apparent energy values in VAs.
MEAS:ENER:APP:K?
Request for apparent energy values in kVAh.
MEAS:SIGN? {<phase (0|1|2)>},{<unit (0|1)>} ,{<harmonic (0-31)>}
Request for signal’s harmonic content.
Parameters : phase (0=L1, 1=L2, 2=L3), unit (0=U, 1=I) and harmonic number.
Answer : amplitude and phase (two comma separated real numbers).
Examples:
MEASure:SIGNal? 0,0,2
… reading of content of 2nd harmonic of UL1
MEASure:SIGNal? 2,1,5
… reading of content of 5th harmonic of IL3
1.234567E-01, 9.456789E+01
… answer for MEASure:SIGNal? command
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Reference Standard RS 2x20
User’s Guide
DECLARATION OF CONFORMITY
Manufacturer’s Name:
Applied Precision Ltd.
Manufacturer’s Address:
Stavitelska 1
831 04 Bratislava
SLOVAKIA
Declares, that the product
Product Name:
Reference Standard
Model Number(s):
RS 2120B, RS 2320B
Product Option(s):
all options of the above product
Conforms to the following European Directives:
Low Voltage Directive:
2006/95/EC
(dated 12.12.2006)
EMC Directive:
2004/108/EC
(dated 15.12.2004)
Conforms to the following product standards:
Safety:
EN 61010-1
(dated 2001/2002/2003)
EMC:
EN 61326
(dated 1997)
Product is safe under conditions of standard application and carries the CE marking
11th December 2009
DATE
Dr. Ladislav GRNO
Director
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User’s Guide
TECHNICAL SPECIFICATION
Model
Phases
Class
RS 2120B
1
0.1
RS 2320B
3
0.1
Basic Error
Voltage & Current
0.05 %
Apparent Power
0.1 %
Active Power *
0.1 %
Reactive Power *
0.2 %
Power Factor
0.002
Frequency
0.01 Hz
Distortion
0.5 %
Phase angle
0.1 °
* related to the Apparent Power
General Parameters
Measured Quantities
Basic Frequency
Input Circuits
Voltage Range
Current Range
Power Factor Range
Phase Angle
Communication Interface
Meter Testing
Display
Dimensions (W x D x H)
Weight (approx.)
Voltage, Current, Active/Reactive/Apparent Power,
Active/Reactive/Apparent Energy, Power Factor, Phase Angle, Frequency,
Distortion
40 .. 70 Hz
1-phase 2-wire (RS 2120 & RS 2320)
1-phase 3-wire and 2-phase (RS 2320 only)
3-phase 3-wire / 4-wire (RS 2320 only)
1 .. 500 V (phase to neutral)
1 mA .. 120 A
-1 .. 0 .. 1
0 .. 360 °
USB and RS-232 (SCPI compatible communication protocol)
direct testing of inductive or electronic meters or reference standards
3.5” / 320 x 240 pixels / 256 colors
490 x 490 x 90 mm (2U form factor)
9.5 kg (RS 2120)
10.5 kg (RS 2320)
Impulse Output
23
Number of impulse outputs
1
Impulses assigned to
Active / Reactive / Apparent Energy or programmable constant frequency
Meter constant
programmable
Maximal impulse frequency
70 kHz
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