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hardware:wattmons:wattmonpro_intro [2018/09/02 15:44] jeff Improved Standards Compliance |
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- | ======WattmonPRO Overview====== | ||
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- | {{wattmonpro - white_bg.jpg? | ||
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- | =====Wiring and Connections Diagram===== | ||
- | {{wattmonpro_topview.png|Topview Connection Diagram (WattmonPRO)}} | ||
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- | =====Power Requirements===== | ||
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- | WattmonPRO can run on a DC power source between 6 and 60V DC. It has a built in high efficiency switching buck regulator that ensures that it consumes less than 2 watts of power without accessory devices. The device can be shipped with an AC adapter or a DC power cable to be directly connected to your battery bank of up to 48V DC. | ||
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- | =====Connectivity===== | ||
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- | WattmonPRO has two ways of connecting to the Internet. The built-in LAN can be connected directly to a laptop or router, and is used for setup and local monitoring (but can also be used for remote monitoring if the site has an Internet connection). The USB Host port works with a selected number of USB Cellular dongles (GPRS and 3G), allowing both outbound and inbound data via the Internet. Although we provide instructions on configuring your local dongle, not all of them work. Need a compatible USB dongle for remote monitoring? Use one of our Huawei dongles, the E303F or E3531. | ||
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- | =====Hardware Features===== | ||
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- | ====Serial (RS-232)==== | ||
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- | An [[how_tos: | ||
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- | ====Modbus RTU (RS-485)==== | ||
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- | An industry compliant RS-485 Modbus RTU interface is built in and the Wattmon acts as a Modbus master to collect data from various devices such as power meters, current sensors, etc. Up to 8 Modbus RTU-compliant slave devices and 1 Modbus TCP device can be daisy-chained to the interface, and the Modbus can be configured for any baud rate up to 115200 with different parity settings as required. | ||
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- | If you are planning to monitor a battery bank with Wattmon, you will require a current sensor device such as the C252 (25A) or C1002 (100A). | ||
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- | See [[hardware: | ||
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- | ====Inputs and Outputs==== | ||
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- | The inputs and outputs and their various applications are described below. | ||
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- | ===4 digital inputs=== | ||
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- | Pins 16-19 are digital inputs. They are opto-isolated and can handle anywhere between 4 and 24V DC between the input pin and the DIGND pin. Pins 16-18 (DI1-DI3) can also be configured as pulse/ | ||
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- | ===4 digital outputs=== | ||
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- | These are open collector type (using a ULN2003 chip) and can be directly connected to 12V relays (with external power supply) to control high power loads - they can handle up to 500mA per pin. | ||
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- | ===Onboard relay=== | ||
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- | An on-board latching relay can switch DC or AC loads of up to 5 A. If higher loads are required, this relay can be used to power a larger one. The latching relay takes very little power to switch state and no power once toggled, so there is no difference in power draw whether the relay is on or off. | ||
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- | ===3 Analog inputs=== | ||
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- | WattmonPRO has three analog input channels, each with a 10-bit <tooltip title=" | ||
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- | A1 also doubles as the <tooltip title=" | ||
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- | A2 is a voltage sense input that can be used to measure up to 330V DC for high voltage battery banks. The negative voltage terminal is shared with the main ground on pin 1. | ||
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- | A3 is used to measure up to 5V DC, perfect for sensor inputs from devices such as the PYRA300 Solar Irradiation Sensor or pH meters. | ||
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- | ===OneWire Bus=== | ||
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- | WattmonPRO has a Dallas OneWire bus that allows for DS18B20 temperature sensors to be connected. This can be used for ambient or battery temperature measurement. You can connect up to 8 sensors per device. See here for more information: | ||
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- | ====Storage==== | ||
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- | A removable/ | ||
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- | WattmonPRO has 128 KB RAM (enough space for about 30 KB of added user variables and scripts). | ||
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- | There is also 8 KB of <tooltip title=" | ||
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- | =====Standards Compliance===== | ||
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- | WattmonPRO is classified as a device for Industrial use. The device complies with the following standards: | ||
- | * **CISPR 11 Class A** - Emission | ||
- | * **IEC 61000-4-5** - Surge Withstand - 1kV | ||
- | * **IEC-61000-4-2** - ElectroStatic Discharge - 8kV Air, 6kV Contact | ||
- | * **IEC-61000-4-4** - Fast Transient Immunity - 1kV | ||
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