Features
- Measurement from 10-347Vac (600Vac line-to-line)
- Modular Design, various input modules
- From 3 to 60 current input channels
- Any combination of single, split & 3-phase circuits
- Per channel configurable CT ratios
- Per channel voltage/current mapping
- Digital communication via RS-485, Ethernet and WiFi
- Modbus/RTU, Modbus TCP, BACnet/IP, MQTT, API, HTTP web server, HTTP Post
- Ultra High Accuracy, High-Resolution Power and Energy measurements
- Compatible with mA, mV, or Rogowski Coil Inputs
- Custom virtual points are readable with Modbus and BACnet.
- Virtual points support arithmetic across all 60 input channels
- NEMA Enclosure
Product Description
The WattsOn-MCM is a modular power and energy metering system. The product consists of a main board, voltage interface, and expandability for up to 20 input cards (3 channels per card) a power supply and communication interface card.
The modular design allows for flexible deployment, and possibility of easy future expansion. Each AC power metering card features up to three channels of measurements, and with 20 card slots, this translates to a total of 60 possible metering points.
The on-board communication coordinator features RS-485, Ethernet and WiFi interfaces. With Modbus/RTU, Modbus TCP, HTTP Post, web server, and API, the architecture allows for flexible integration with many third-party platforms and devices. Additionally, the Elkor Cloud service may be used for monitoring and trending.
Configuration is handled through the on-board webserver, with a straightforward wizard. This allows configuration of existing and newly added cards including proper CT configuration, in addition to channel naming and channel voltage mapping.
Voltages need only be wired once into the voltage interface, which provides a safe, isolated signal to the WattsOn-MCM. This prevents the need for additional wiring, and limits the line voltages to a small area of the enclosure.
A highly flexible template and configuration design allows for user created virtual metering points. This allows a number of math functions to be performed on multiple data points, which may be used to aggregate data from user specified channels. Using the incorporated math and scripting allows for user defined calculations to be carried out on arbitrary register sets.
Future expandability means that the system can grow with demand. The plug-and-play design will feature multiple module types including Power Monitoring (Simple, Full, Advanced)**.
** Pulse/Relay Input, Pulse/Relay Output, Analog Input, Analog Output modules in development.
Specifications
| INPUTS: Main Board | |||||
|---|---|---|---|---|---|
| Power Supply: | 120-240VAC (internal 24VDC power supply) | ||||
| Supported Wiring Types: |
Up to 347/600V Delta, Wye Single-phase installations up to 347V RMS Split-phase (two phase) installations |
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| Frequency: | 40-70 Hz nominal (30-300 Hz max) | ||||
| Voltage: | 20Vac - 347Vac L-N (600Vac L-L) (450Vac L-N, 780V L-L absolute max) |
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| Current Input Channels Using -PM Cards |
Modular Design: 1-60 single phase 1-20 three-phase 1-30 split-phase or any combination--voltage/current phasing freely assignable |
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| Wire Size: | Voltage: AWG 30-12, (AWG 16-22 recommended) | ||||
| Overload: | 20% continuous maintaining full accuracy. 50% momentary voltage overload | ||||
| INPUTS: Power (-PM) Cards | |||||
|---|---|---|---|---|---|
| Current (Model Dependent): |
-mA model | -mV model | -RC model | ||
| Input Rating: | Up to 200mA CTs (ie: Elkor mA CTs) | 333mV output CTs (400mV max) | Up to 360mV via Rogowski Coils | ||
| Input Impedance: | 1.5Ω typ | 800kΩ min, 1.2MΩ typ | 600kΩ min | ||
| Wire Size: | AWG 24-12 | ||||
| Overload: | 20% continuous maintaining full accuracy. 100% momentary current overload | ||||
| INPUTS: Input (-IM) Cards | |||||
|---|---|---|---|---|---|
| Analog Input Modes: |
|
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| Specifiations: | 0-10VDC Mode | 4-20 mA Mode | Pulse Mode | ||
| In Development | |||||
| OUTPUTS | |||||
|---|---|---|---|---|---|
| Modbus/RTU | RS-485 2-wire, 9600 to 230400 baud | ||||
| Ethernet/WiFi | Modbus/TCP, BACnet/IP, MQTT, HTTP Post, Webserver, API | ||||
| Auxilliary Bus: | RS-485 2-wire Modbus/RTU, for direct communication with cards | ||||
| Display (optional): | Color Touchscreen Graphical HMI Through front panel (or remote) installation |
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| ACCURACY | |||||
|---|---|---|---|---|---|
| Current (A): | 0.1% typ | 0.2% max | |||
| Voltage L-N (V): | 0.25% typ | 0.3% max | |||
| Voltage L-L (V): | 0.25% typ | 0.3% max | |||
| Power (W, VA, VAR)*: | 0.2% typ | 0.5% max | |||
| Energy (Wh, VARh, VAh)*: | 0.2% typ | 0.5% max | |||
| Power Factor: | 0.4% max | ||||
| Frequency: | 0.01% max | ||||
| Input Bandwith: | 2 kHz (33rd Harmonic @ 60Hz, 40th Harmonic @ 50Hz) | ||||
| Data Update Frequency: | 2 Hz (every 500ms) | ||||
| * Available measurement parameters depend on card model (see below) | |||||
| MECHANICAL | |||||
|---|---|---|---|---|---|
| Dimensions: | 12" x 10" x 4" W x L x H | ||||
| Mounting: | Wall Mount NEMA4X Enclosure* *Rating is NEMA1 with optional through-panel LCD touchscreen. |
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| ENVIRONMENTAL | |||||
|---|---|---|---|---|---|
| Operating Temperature: | -40°C to +70°C | ||||
| Storage Temperature: | -65°C to +85°C | ||||
| Humidity: | 10 to 90% non-condensing | ||||
| COMPLIANCE | |||||
|---|---|---|---|---|---|
| Safety: | UL Listed (#E250395) | ||||
| Isolation: | 3,500VAC (min) input-to-output | ||||
| Electromagnetic Emissions: | FCC part 15 Class A | ||||
Power Metering Cards
- WMC-PM-L-xy: (Lite): Three channels of V, A, PF, kW, kWh (absolute)
- WMC-PM-P-xy: (Plus): Three channels of V, A, PF, kW, kVAR, kVA, kWh, kVARh, kVAh (import/export)
Where -xy represents the desired CT input type (-mA, -mV, -RC) - WMC-IM: Three Channel Analog/Digital input (0-10VDC, 4-20mA, wet/dry pulse or relay) -- In Development
Front Panel Display
Optional Front Panel Touchscreen shows dynamic measurements and virtual data points
Web Server
Built in webserver for quick, visual setup and monitoring
