Talkpool OY1400 LoRaWAN converter 0-10V, 4-20 mA

LoRaWAN unit designed to connect external analogue probes to your LoRaWAN network. Fit for industrial environments, built to have many years of maintenance free battery life.

Key Features

• LoRaWAN
•  868 MHz
•  Over the air & Perzonalization
• Cryptographic co-processor
• Secure boot, Secure firmware upgrade

Sensor connection The OY1400 supports up to two sensors. Each sensor can independently be configured either to measure 0-10V or 4-20mA. It is also possible to configure a threshold for a channel and then the channel becomes digital and the measurement is only 0 or 1. Voltage measurement Each channel can independently be setup to measure a 0-10V signal. The input is 24V tolerant. Setting up a channel for voltage measurement is done by configuring the input selection jumper to position “0-10V”, left side of the jumper block is channel 1 and right side is channel 2. The measurement on the LoRa network shall be multiplied by a factor of 4.1 to get the correct measured voltage. Current measurement Each channel can independently be setup to measure a 4-20mA signal. The shunt resistor is 120 Ohm. Setting up a channel for current measurement is done by configuring the input selection jumper to position “4-20mA”, left side of the jumper block is channel 1 and right side is channel 2. The measurement on the LoRa network shall first be multiplied by a factor of 4.1 (to get a voltage reading across the shunt resistor) and then divided with by 120 to get the correct measured current. Digital measurement Each channel can independently be setup to make a “digital” measurement. This is done by configuring a threshold. When the measured voltage is above the threshold the signal is considered to be “1”, otherwise it is considered to be “0”. The benefit of configuring the channel as digital is that the transmission requires less power. The threshold can be configured using a downlink command. Configuring the threshold to 0 makes the channel analog. As an example, a threshold of 5V is achieved by configuring a threshold value of 9756 (0x261C), 9756 * 1/8mV * 4.1 = 5000mV. Standard measurement cycle For the standard application type the measurement cycle measures both channels simultaneously. The measurement cycle is performed with a configurable period. First the 24V power output is enabled. Then there is a configurable delay before both channels are measured. This delay must be set to match the slower of the two channels. After the measurement the 24V power is disabled directly. Manual trigger It is possible to trigger a measurement manually by pressing the button of the OY1400. The measurement cycle is performed directly and the measurement is then transmitted (regardless of measurement grouping setting), Measurement grouping In order to reduce the power consumption, it is possible to configure the OY1400 to group a number of measurements in one transmission. Applications type It is possible to order a different application type than the standard. An application specific type typically has a customized measurement cycle including specific logic. It is possible to read the Application type using downlink but it can only be configured during production. The standard application is type 0. LoV application type The LoV (“Luft och Vatten”) application is type 1.