Product Details
D315R is designed specifically for intelligent control of closed single-tank solar water-heating systems, with three functional modules: collector differential-temperature circulation, tank constant-temperature control, and return-pipe heat retention (or collector-pipe freeze protection).
D315R features a MODBUS485 communication interface for communication with a host PLC, allowing all temperatures and setting parameters to be modified and read by the host.
Product
Product key features
Function 1: Differential-temperature heat-collection circulation between the solar collector and heat-collection tank, with protection functions: high-tank-temperature circulation stop, collector freeze-protection circulation, and protection against tube bursting caused by an excessive collector-tank temperature difference
Function 2: Thermostatic control of insulated water tank
Function 3: Independent temperature control for heat-tracing cables on collector or return-water pipes, providing freeze protection or return-water heat retention
Both heat-collection circulation and electric heating use high-current relay outputs. The heat-collection circulation output can directly drive a 500W pump, and the tank constant-temperature heating output can directly drive a 2000W electric heater.
The collector temperature probe uses an NTC230K thermistor with a high-temperature-resistant design, withstanding temperatures up to 250°C
The water tank temperature probe uses a waterproof sensor and can be immersed directly in water for measurement, with no waterproof thermowell required.
Collector temperature, water tank temperature, and other thermostat temperature measurements are all displayed to one decimal place
Three-way temperature measurement deviation correction
Intelligent power supply design automatically adapts to AC80V–240V for stable, durable, uninterrupted operation worldwide.
MODBUS-RS485 communication at 9600 baud. An external PLC host or our D-315R-PX7 seven-inch monitoring screen can read all measured temperatures and output states and set parameters.
Typical Product Applications
Product Technical Parameters
| Operating power supply | AC80～240V,AC/50HZ/60HZ |
| Power Consumption | works 5 watts, standby < 2 watts |
| Storage Environment | 40℃～70℃；5% to 95% non-condensing |
| Work environment | 0℃～40℃；10% to 90% non-condensing |
| Display mode | Digital Module |
| Buttons | Silicone buttons |
| Temperature sensor | High-temperature sensor T0: thermistor R(25℃)=230KΩ±1% B(100/200℃)=4537K±1%. Standard temperature sensors T1, T2: thermistor R(25°C)=10KΩ±1%, B=3435 |
| Temperature Measurement Range | Collector temperature sensorT0: -10.0～250.0℃ Tank temperature sensorT1: -20.0～150.0℃ Temperature-control sensorT2: -20.0～150.0℃ |
| Measurement accuracy | ±1℃. |
| Show resolution | ±0.1℃, temperature drift <0.3FS% |
| Output | Collector circulation output: 30A, 250VAC (resistive load), relay ON/OFF, electrical life 100,000 cycles Water tank constant-temperature output: 30A, 250VAC (resistive load), relay ON/OFF, electrical life 100,000 cycles Temperature control output: 5A, 250VAC (resistive load), relay ON/OFF, electrical life 100,000 cycles |
| Other | Flash memory technology retains parameter settings for extended periods after power loss |
Product packaging, specifications and weight
| Exterior dimensions | 100mm (Length) x 100mm (Width) x 70mm (Height) |
| Net Weight | 289.5g |
| Gross Weight | 399 g |
