General information
Product type designationAI Energy Meter RC ST
Firmware versionV8.0
FW update possibleYes
usable BaseUnitsBU type U0
Color code for module-specific color-coded labelCC20
Supported power supply systemsTT, TN, IT
Product function
Voltage measurementYes
— without voltage transformerYes
— with voltage transformerYes
Current measurementYes; max. 3 + neutral conductor
— without current transformerNo
— with current transformerNo
— With Rogowski coilYes
— With current-voltage-converterYes; 333 mV interface
Energy measurementYes
Frequency measurementYes
Power measurementYes
Active power measurementYes
Reactive power measurementYes
Power factor measurementYes
Active factor measurementYes
Reactive power compensationYes
Line analysisNo
I&M dataYes; I&M0 to I&M3
Isochronous modeNo
Engineering with
STEP 7 TIA Portal configurable/integrated from versionSTEP 7 V16 or higher with HSP
STEP 7 configurable/integrated from versionConfigurable via GSD file
PROFIBUS from GSD version/GSD revisionOne GSD file each, Revision 3 and 5 and higher
PROFINET from GSD version/GSD revisionV2.3
Operating mode
Switching between operating modes in RUNYes; For module version 32 I/20 Q, it is possible to dynamically switch between 25 user data variants, 23 of which are pre-defined and 2 of which can be defined by the specific user
Cyclic measured value accessYes
Acyclic measured value accessYes
Fixed measured value setsYes
Freely definable measured value setsYes; For cyclic and acyclic measured value access
CiR - Configuration in RUN
Reparameterization possible in RUNYes
Calibration possible in RUNYes
Installation type/mounting
Mounting positionany
Supply voltage
Rated value (DC)24 V
permissible range, lower limit (DC)19.2 V
permissible range, upper limit (DC)28.8 V
Input current
Current consumption (rated value)12.5 mA
Current consumption, max.17 mA
Power loss
Power loss, typ.400 mW; 3x 230 V AC
Address space per module
Inputs256 byte
Outputs20 byte
Hardware configuration
Automatic encodingYes
Mechanical coding elementYes
Type of mechanical coding elementtype C
Selection of BaseUnit for connection variants
2-wire connectionBU type U0
Operating hours counter
presentYes
Analog inputs
Cycle time (all channels), typ.50 ms; Time for consistent update of all measured and calculated values (cyclic und acyclic data)
Cable length
shielded, max.200 m
unshielded, max.200 m
Analog value generation for the inputs
Sampling frequency, max.2 048 kHz
Alarms
Diagnostic alarmYes
Limit value alarmYes
Hardware interruptYes; Monitoring of up to 16 freely selectable process values (exceeding or undershooting of value)
Diagnoses
Supply voltageYes
Hardware interrupt lostYes
Parameter assignment errorYes
Module faultYes
Channel not availableYes
Overflow/UnderflowYes
Overload currentYes
Diagnostics indication LED
Monitoring of the supply voltage (PWR-LED)Yes
Channel status displayYes; green LED
for channel diagnosticsYes; red Fn LED
for module diagnosticsYes; green/red DIAG LED
Measuring functions
Measuring procedure for voltage measurementTRMS
Measuring procedure for current measurementTRMS
Type of measured value acquisitionseamless
Curve shape of voltageSinusoidal or distorted
Buffering of measured variablesYes
Parameter length128 byte
Bandwidth of measured value acquisition3.2 kHz; Harmonics: 63 / 50 Hz, 52 / 60 Hz
Measuring range
— Frequency measurement, min.40 Hz
— Frequency measurement, max.70 Hz
Measuring inputs for voltage
— Measurable line voltage between phase and neutral conductor277 V
— Measurable line voltage between the line conductors480 V
— Measurable line voltage between phase and neutral conductor, min.3 V
— Measurable line voltage between phase and neutral conductor, max.300 V
— Measurable line voltage between the line conductors, min.6 V
— Measurable line voltage between the line conductors, max.519 V
— Internal resistance line conductor and neutral conductor1.5 MΩ
— Power consumption per phase60 mW; 300 V AC
— Impulse voltage resistance 1,2/50µs2.5 kV
— Overvoltage categoryCAT II according to IEC 61010 Part 1
Measuring inputs for current (Rog. or I/U converter)
— Measurable current at AC, max.424 mV
— Continuous voltage, maximum permissible2 V
— Rated value, short-time withstand voltage restricted to 1 s30 V
— Input resistance120 kΩ
— Zero point suppressionYes; 0 ... 20%, referred to the nominal current
Accuracy class according to IEC 61557-12
— Measured variable voltage0,2
— Measured variable current0,2
— Measured variable apparent power0.5
— Measured variable active power0.5
— Measured variable reactive power1
— Measured variable power factor0.5
— Measured variable active energy0.5
— Measured variable reactive energy1
— Measured variable neutral current0,2
— Measured variable phase angle±0.5 °; not covered by IEC 61557-12
— Measured variable frequency0.05; only valid for the permissible voltage measuring range
Potential separation channels
between the channelsNo
between the channels and backplane busYes
Between the channels and load voltage L+Yes; Including FE
Isolation
Isolation tested withBetween channels and backplane bus, 24 V supply: Routine test, 1 920 V AC, 2 s; between backplane bus and 24 V supply: Type test, 707 V DC
Ecological footprint
environmental product declarationYes
Global warming potential
— global warming potential, (total) [CO2 eq]9.32 kg
— global warming potential, (during production) [CO2 eq]4.97 kg
— global warming potential, (during operation) [CO2 eq]4.79 kg
— global warming potential, (after end of life cycle) [CO2 eq]-0.449 kg
Ambient temperature during operation
horizontal installation, min.-30 °C
horizontal installation, max.60 °C
vertical installation, min.-30 °C
vertical installation, max.50 °C
Altitude during operation relating to sea level
Installation altitude above sea level, max.3 000 m; Restrictions for installation altitudes > 2 000 m, see manual
Absolute humidity
dew point, min.-60 °C; suitable for dry room applications
Dimensions
Width20 mm
Height73 mm
Depth58 mm
Weights
Weight, approx.45 g
Data for selecting a voltage transformer
Secondary side, max.300 V