B&R X20CM0985-02 New Rev. C0 – Energy measurement for 120 to 480 VAC
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Quick facts
| Availability | In stock — 7 available |
| Category | Communication Modules |
| Warranty | 12-month |
| Datasheet | Manufacturer datasheet ↗ |
Shipping & availability
When can X20CM0985-02 be shipped?
X20CM0985-02 is in stock and typically ships within 1 business day via UPS, DHL or FedEx, worldwide.
Can I pick up X20CM0985-02 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — alongside standard UPS, DHL and FedEx shipping, express (next-day) delivery is available at checkout for in-stock items like X20CM0985-02.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for X20CM0985-02, subject to availability and destination.
• 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 on a compact base area, combined with a synchronization unit that meets all requirements.
The 4 current inputs of the measuring unit are suitable for both X: 1 A and X: 5 A current transformers. The overcurrent resistance and the high resolution of the measuring unit round off the properties. The range of values for the voltage inputs is also configurable between 120 VAC , 480 VAC and 690 VAC without compromising the converter resolution.
The area of application therefore includes 4-wire AC systems with an line-to-line voltage of up to 690 VAC and 3-wire systems, in which L2 can be grounded (V circuit). The module also controls the measuring principle of the Aron circuit.
The resulting measured values range from the pure phase current and the line-to-line or phase voltage to the active, reactive and apparent power components, the mains frequency, the power factor and much more. In addition, peak values and energy meters are stored on the module in a nonvolatile manner. Depending on the configuration, it is also possible to use a digital output with scalable significance as a pulse encoder for an external energy meter.
The synchronization unit does not just take the phase relationship and phase voltage into account; integrated intelligence also monitors the rate of change and other parameters, allowing them to influence when the synchronization output is switched. Monitoring the synchronization of a generator is possible with a large number of additional framework conditions. A total of 4 voltage inputs provide plenty of room for 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.
Accessories
Required accessories (order separately)
| X20TB12 | Terminal blocks — Tool-free wiring with push-in technology; Simple wire release using lever; Ability to label each terminal; Plain text labeling also possibl… |
| 0TB3104-7012 | Terminal blocks — The single row 4-pin terminal block 0TB3104 is used for making connections on an X20 energy measurement module. |
| 0TB3104-7011 | Terminal blocks — The single row 4-pin terminal block 0TB3104 is used for making connections on an X20 energy measurement module. |
| 0TB3102-7012 | Terminal blocks — The single row 2-pin terminal block 0TB3102 is used for making connections on an X20 energy measurement module. |
| 0TB3102-7011 | Terminal blocks — Accessory terminal block, 2-pin, A-coded, screw clamp terminal block 6 mm² |
Specifications
Short description
| I/O module | X20 energy measurement and synchronization module |
General information
| Diagnostics – Module run/error | Yes, using LED status indicator and software |
| Diagnostics – Analog inputs | Yes, using LED status indicator (measurement range of analog inputs) |
| Diagnostics – Digital outputs | Yes, using LED status indicator and software |
| Measurable frequency – Measurement range | 15.2 Hz to 2x nominal frequency " data-placement="top" data-html="true" data-container="body" data-content="Rated frequency: 48 to 62 Hz. Synchronization is only possible at the nominal frequency."> |
| Measurable frequency – Accuracy | Typ. 10 mHz at 400 V / 50 Hz and sinusoidal signals |
| Power consumption – Bus | 1.05 W |
| Power consumption – Internal I/O | 4 W |
| Certifications – CE | Yes |
| Certifications – UKCA | Yes |
| Certifications – CRA (Cyber Resilience Act) | In preparation |
| Certifications – UL | cULus E115267; Industrial control equipment; cULus E537419; Engine generator controller |
| Certifications – UL 6200 | Rev. C6; Hardware upgrade 1.5.0.0 |
| B&R ID code | 0xF425 |
| Status indicators | Channel status, operating state, module status |
| Overvoltage category | ll " data-placement="top" data-html="true" data-container="body" data-content="EN 61131-2"> |
| Additional power dissipation caused by actuators (resistive) [W] | - |
Digital outputs
| Switching delay – 0 → 1 | <300 μs |
| Switching delay – 1 → 0 | <300 μs |
| Switching frequency – Resistive load | Max. 100 Hz |
| 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 |
| Insulation voltage between channel and bus | 500 V eff |
Relay outputs
| Switching capacity – Min. | 10 mA / 5 VDC |
| Switching capacity – Max. | 30 W / 240 VAC |
| Switching delay – 0 → 1 | ≤10 ms |
| Switching delay – 1 → 0 | ≤10 ms |
| Service life " data-placement="top" data-html="true" data-container="body" data-content="See section "Electrical service life"."> – Mechanical | Min. 10 x 10 6 ops. |
| Service life " data-placement="top" data-html="true" data-container="body" data-content="See section "Electrical service life"."> – Electrical | Min. 60 x 10 3 ops. (NC) at 1 A; Min. 30 x 10 3 ops. (NO) at 1 A |
| Protective circuit – Internal | None |
| Protective circuit – External | None |
| Protective circuit – DC | Inverse diode, RC combination or VDR |
| Protective circuit – AC | RC combination or VDR |
| Insulation voltage – Channel - Channel | 1000 VAC / 1 min |
| Insulation voltage – Channel - Bus | 4000 VAC / 1 min |
| Quantity | 1 |
| Variant | Relay / Changeover contact |
| Nominal voltage | 30 VDC / 240 VAC |
| Rated frequency | DC / 45 to 63 Hz |
| Nominal output current | 1 A at 30 VDC / 1 A at 240 VAC |
| Actuator power supply | External |
| Switching voltage | Max. 60 VDC / 250 VAC |
| Contact resistance | Max. 100 mΩ |
Analog input voltage
| Conversion time – 50 Hz | 10 ms |
| Conversion time – 60 Hz | 8.33 ms |
| Conversion time – Instantaneous values | Corresponds to the X2X cycle time |
| Output format " data-placement="top" data-html="true" data-container="body" data-content="INT, range of values: 0x8001 to 0x7FFF"> – ±120 VAC | 1 LSB = 0x0001 = 5.707 mV |
| Output format " data-placement="top" data-html="true" data-container="body" data-content="INT, range of values: 0x8001 to 0x7FFF"> – ±480 VAC | 1 LSB = 0x0001 = 22.787 mV |
| Output of digital value during overload – Overshoot | 0x7FFF |
| Output of digital value during overload – Undershoot | 0x8001 |
| Input filter – Cutoff frequency | 10 kHz |
| Input filter – Slope | 60 dB |
| Max. error at 25°C – Gain | 0.09% " data-placement="top" data-html="true" data-container="body" data-content="Based on the current measured value"> |
| Max. error at 25°C – Offset | 0.03% " data-placement="top" data-html="true" data-container="body" data-content="Based on the measurement range 240 VAC / 960 VAC"> |
| Channels | 8 |
| Input | 120 VAC / 480 VAC |
| Input type | Single-ended |
| Digital converter resolution | ±15-bit |
| Permissible input signal | Max. 132 VAC / 528 VAC |
| Conversion method | SAR |
| Maximum gain drift " data-placement="top" data-html="true" data-container="body" data-content="Based on the current measured value"> | 0.02% per °C |
| Maximum offset drift " data-placement="top" data-html="true" data-container="body" data-content="Based on the measurement range 240 VAC / 960 VAC"> | 0.003% per °C |
| Crosstalk between channels | -70 dB |
| Nonlinearity " data-placement="top" data-html="true" data-container="body" data-content="Based on the measurement range 240 VAC / 960 VAC"> | ≤0.5% at 45 to 65 Hz |
| Protection against electric shock | Protective impedance per EN 61131-2 |
| Test voltage between channel and bus (type test) | 3700 V eff |
| Output format | INT |
| Input impedance in signal range | Approx. 3 MΩ |
| Input protection | Overvoltage protection |
Analog input current
| Conversion time – 50 Hz | 10 ms |
| Conversion time – 60 Hz | 8.33 ms |
| Conversion time – Instantaneous values | Corresponds to the X2X cycle time |
| Output format " data-placement="top" data-html="true" data-container="body" data-content="INT, range of values: 0x8001 to 0x7FFF"> – ±1 A | 1 LSB = 0x0001 = 189.903 μA |
| Output format " data-placement="top" data-html="true" data-container="body" data-content="INT, range of values: 0x8001 to 0x7FFF"> – ±5 A | 1 LSB = 0x0001 = 949.513 μA |
| Output of digital value during overload – Overshoot | 0x7FFF |
| Output of digital value during overload – Undershoot | 0x8001 |
| Input filter – Cutoff frequency | 10 kHz |
| Input filter – Slope | 60 dB |
| Max. error at 25°C – Gain | 0.2% " data-placement="top" data-html="true" data-container="body" data-content="Based on the current measured value"> |
| Max. error at 25°C – Offset | 0.05% " data-placement="top" data-html="true" data-container="body" data-content="Based on the measurement range 2 A / 10 A"> |
| Input impedance " data-placement="top" data-html="true" data-container="body" data-content="Including current transformer, circuit path and X20TB12 terminal block (5 mΩ)"> – Measurement range 1 A | Max. 30 mΩ |
| Input impedance " data-placement="top" data-html="true" data-container="body" data-content="Including current transformer, circuit path and X20TB12 terminal block (5 mΩ)"> – Measurement range 5 A | Max. 10 mΩ |
| 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 |
| Permissible input signal | Max. 1.5 A / 7.7 A |
| Conversion method | SAR |
| Maximum gain drift " data-placement="top" data-html="true" data-container="body" data-content="Based on the current measured value"> | 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 " data-placement="top" data-html="true" data-container="body" data-content="Based on the measurement range 2 A / 10 A"> | ≤0.5% at 45 to 65 Hz |
| Insulation voltage between channel and bus | 500 V eff |
| Output format | INT |
| Thermal overcurrent " data-placement="top" data-html="true" data-container="body" data-content="This can result in the measurement hysteresis being offset in relation to the overcurrent."> | 15 x I Nom for 0.2 s " data-placement="top" data-html="true" data-container="body" data-content="Based on the measurement range 1 A / 5 A"> |
| Monitored overcurrent | 4 x I Nom " data-placement="top" data-html="true" data-container="body" data-content="Based on the measurement range 1 A / 5 A"> |
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 |
| Mounting orientation – Vertical | Yes |
| Installation elevation above sea level – 0 to 2000 m | No limitation |
| Installation elevation above sea level – >2000 m | Reduction of ambient temperature by 0.5°C per 100 m |
| Degree of protection per EN 60529 | IP20 |
Ambient conditions
| Temperature – Horizontal mounting orientation | -25 to 60°C |
| Temperature – Vertical mounting orientation | -25 to 50°C |
| Temperature – Derating | See section "Derating". |
| Temperature – Storage | -40 to 85°C |
| Temperature – Transport | -40 to 85°C |
| Relative humidity – Operation | 5 to 95%, non-condensing |
| Relative humidity – Storage | 5 to 95%, non-condensing |
| Relative humidity – 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 |
Downloads & documentation
Official documents from B&R, downloaded directly from the manufacturer.
Data sheets & manuals
| Data sheet X20CM0985-02 | PDF · 3 MB · 1.24 (12/04/2025) - EN |
| X20 System User´s Manual | PDF · 50 MB · 4.40 (03/10/2026) - EN |
CAD & dimension drawings
| 3D data DXF / STEP X20CM0985 | ZIP · 1 MB · 1.0 (12/13/2010) |
Certificates (5)
| E537419 UL Certificate of Compliance X20 | PDF · 153 KB · 2026-07 (07/27/2026) |
| EU Data Act - X20 IO - Connected Product Information Notice | PDF · 92 KB · 1.00 (09/30/2025) |
| EU Declaration ATEX X20 | PDF · 218 KB · 2023-07 (09/05/2023) |
| EU Declaration of conformity PLC X20 | PDF · 169 KB · 2021/10 (11/08/2021) |
| UK Declaration PLC X20 | PDF · 151 KB · 2024-01 (01/18/2024) |
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