B&R X20CM0985-02 NEW

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X20CM0985-02 NEW

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SKU : X20CM0985-02
Brand : B&R
Material number:
  • Energy measurement for 120 to 480 VAC
  • Simultaneous measurement of 2 AC power systems plus 2 additional voltages
  • For multifunction measurement tasks
  • Intelligent power system synchronization unit
  • Current values of generator voltage and current
  • Monitor functions per current power system guidelines

The module combines a power measurement module with special features in a compact footprint together with a synchronizing unit that meets all requirements.

The measurement unit is 3 current inputs are suitable for both X: 1 A and X: 5 A current transformers. Overcurrent resistance and the high resolution of the unit of measurement round off its features. For the voltage inputs, the value range can also be configured between 480 VAC and 120 VAC without any loss in converter resolution.

The area of application includes 4-wire AC power systems with a line-to-line voltage up to 480 VAC and 3-wire systems, where L2 can be grounded (V circuit). In addition, the module masters the measuring principle of the Aron circuit.

The resulting measured values range from the pure phase current and line-to-line or phase voltage to active, reactive and apparent power components, mains frequency, power factor and much more. In addition, peak values and energy meters are stored on the module in nonvolatile memory. Depending on the configuration, it is also possible to use a digital output as a pulse encoder for an external energy meter.

The synchronization unit does not just take the phasing and phase voltage into consideration; integrated intelligence also monitors the rate of change and other parameters, allowing them to influence when the synchronization output is switched. It is also possible to monitor a generator using a large number of additional conditions. A total of 4 voltage inputs provide substantial overall flexibility.

Monitoring functions expand the features of the module. Dependent overcurrent monitoring is included, which utilizes the thermal capacity of the motor/generator to allow short overloads while still providing full protection. The dependent, delayed imbalanced load monitoring used to protect three-phase generator and three-phase networks from imbalanced load can be adapted to the characteristics of different generator types using parameters while taking their special thermal time constants into account.

State: New
Specification :
Short description
I/O module X20 energy measurement and synchronization module
General information
B&R ID code 0xF425
Status indicators Channel status, operating state, module status
Module run/error Yes, using LED status indicator and software
Analog inputs Yes, using LED status indicator (measurement range of analog inputs)
Digital outputs Yes, using LED status indicator and software
Overvoltage category ll
Measurable frequency
Measurement range 15.2 Hz to 2x nominal frequency
Accuracy Typ. 10 mHz at 400 V / 50 Hz and sinusoidal signals
Power consumption
Bus 1.05 W
Internal I/O 4 W
Additional power dissipation caused by actuators (resistive) [W] -
CE Yes
UL cULus E115267
Industrial control equipment
Digital outputs
Quantity 5
Variant Current-sourcing FET
Nominal voltage 24 VDC
Switching voltage 24 VDC -15% / +20%
Nominal output current 0.1 A
Total nominal current 0.5 A
Connection type 1-wire connections
Output circuit Source
Output protection Thermal shutdown in the event of overcurrent or short circuit
Diagnostic status Output monitoring with 10 ms delay
Leakage current when the output is switched off 5 μA
Residual voltage <0.3 V at 0.1 A nominal current
Peak short-circuit current <2 A
Switch-on in the event of overload shutdown or short-circuit shutdown Approx. 10 ms, depends on the module temperature
Switching delay
0 → 1 <300 μs
1 → 0 <300 μs
Switching frequency
Resistive load Max. 100 Hz
Insulation voltage between channel and bus 500 Veff
Relay outputs
Quantity 1
Variant Relay / Changeover contact
Nominal voltage 30 VDC / 240 VAC
Rated frequency DC / 45 to 63 Hz
Switching capacity
Min. 10 mA / 5 VDC
Max. 30 W / 240 VAC
Nominal output current 1 A at 30 VDC / 1 A at 240 VAC
Actuator power supply External
Switching voltage Max. 60 VDC / 250 VAC
Switching delay
0 → 1 ≤10 ms
1 → 0 ≤10 ms
Service life
Mechanical Min. 10 x 106 ops.
Electrical Min. 60 x 103 ops. (NC) at 1 A
Min. 30 x 103 ops. (NO) at 1 A
Contact resistance Max. 100 mΩ
Protective circuit
Internal None
External None
DC Inverse diode, RC combination or VDR
AC RC combination or VDR
Insulation voltage
Channel - Channel 1000 VAC / 1 min
Channel - Bus 4000 VAC / 1 min
Analog input voltage
Channels 8
Input 120 VAC / 480 VAC
Input type Single-ended
Digital converter resolution ±15-bit
Conversion time
50 Hz 10 ms
60 Hz 8.33 ms
Instantaneous values Corresponds to the X2X cycle time
Permissible input signal Max. 132 VAC / 528 VAC
Output format
±120 VAC 1 LSB = 0x0001 = 5.707 mV
±480 VAC 1 LSB = 0x0001 = 22.787 mV
Output of digital value during overload
Overshoot 0x7FFF
Undershoot 0x8001
Conversion method SAR
Input filter
Cutoff frequency 10 kHz
Slope 60 dB
Maximum gain drift 0.02% per °C
Maximum offset drift 0.003% per °C
Crosstalk between channels -70 dB
Nonlinearity ≤0.5% at 45 to 65 Hz
Protection against electrical shock Protective impedance per EN 61131-2
Test voltage between channel and bus (type test) 3700 Veff
Output format INT
Input impedance in signal range Approx. 3 MΩ
Max. error at 25°C
Gain 0.09%
Offset 0.03%
Input protection Overvoltage protection
Analog input current
Channels 3
Input 1 A / 5 A AC
Input type Isolated current transformer according to the compensation principle with a magnetic sensor, for connecting an external transformer
Digital converter resolution ±15-bit
Conversion time
50 Hz 10 ms
60 Hz 8.33 ms
Instantaneous values Corresponds to the X2X cycle time
Permissible input signal Max. 1.5 A / 7.7 A
Output format
±1 A 1 LSB = 0x0001 = 189.903 μA
±5 A 1 LSB = 0x0001 = 949.513 μA
Output of digital value during overload
Overshoot 0x7FFF
Undershoot 0x8001
Conversion method SAR
Input filter
Cutoff frequency 10 kHz
Slope 60 dB
Maximum gain drift 0.07% per °C
Maximum offset drift Measurement range 2 A: 0.0064% per °C, measurement range 10 A: 0.00384% per °C
Crosstalk between channels -70 dB
Nonlinearity ≤0.5% at 45 to 65 Hz
Insulation voltage between channel and bus 500 Veff
Output format INT
Max. error at 25°C
Gain 0.2%
Offset 0.05%
Thermal overcurrent 15 x INom for 0.2 s
Monitored overcurrent 4 x INom
Input impedance
Measurement range 1 A Max. 30 mΩ
Measurement range 5 A Max. 10 mΩ
Electrical properties
Electrical isolation
Bus isolated from I/O power supply and digital inputs and outputs

Digital inputs and outputs isolated from each other
Operating conditions
Mounting orientation
Horizontal Yes
Vertical Yes
Installation elevation above sea level
0 to 2000 m No limitation
>2000 m Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529 IP20
Ambient conditions
Horizontal mounting orientation -25 to 60°C
Vertical mounting orientation -25 to 50°C
Derating See section "Derating".
Storage -40 to 85°C
Transport -40 to 85°C
Relative humidity
Operation 5 to 95%, non-condensing
Storage 5 to 95%, non-condensing
Transport 5 to 95%, non-condensing
Mechanical properties
Note Order 2x terminal block X20TB12 separately.
Order 2x screw clamp terminal block TB3102 and 2x screw clamp terminal block TB3104 separately.
Pitch 87.5+0.2 mm
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B&R X20CM0985-02 NEW