SR21_H Solar Working Station

Product name:SR21_H Solar Working Station
Package Size:580 mm × 445 mm × 200 mm
Package Weight:13.5 Kg
Apply to:Split Pressurized Solar System
Guarantee Period:1 Year

Categories: Solar Group Pump Station Tags: Controller
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Max.number of collectors:2
Max.number of storage tanks:2
Max.number of relays:7
Max.number of sensors:8
Max.number of application system:23
Input: 2 × PT1000
Temperature sensors 5 × NTC10K, B=3950
Temperature sensors 1 × Grundfos Direct Sensor
TM (VFS type) 1× Grundfos Direct Sensor TM (RPS type)
Output: 3 × Electromagnetic relay
Max. current 1A 3 × Semiconductor repay
Max. current 1A 1 × Potential-free extra-low voltage relay
(on/off signal) 3 × PWM variable frequency output (switchable 0-10V)

Power supply : 100…240V ~(50…60Hz)
Rated impulse voltage::2.5KV
Data interface : TF (Micro SD)
485 current supply:60mA
Housing:Plastic ABS
Mounting:Wall mounting
Indication / Display: System-Monitoring-Display, for visualization of the systems, TFT colorful display, and background illumination
Operation: 5 push buttons at the front cover
Protection type: IP41
Protection class: I
Ambient temperature: 0 … 40 °C
Degree of pollution: 2
Dimensions: 208*158*43mm

Timing heating
Temperature difference control 3*ΔT
Collector emergency shutdown
Collector cooling function
Collector low temperature protection
Collector frost protection
Tank re-cooling function
Celsius and fahrenheit transferring
Maximum temperature of tank (2*storage tanks)
Maximum turnoff temperature
(for solid fuel boiler, return heating, heat transferring between tanks)
Minimum turn-on temperature
(for solid fuel boiler, return heating, heating transferring between tanks)
Anti-Legionella function
Temperature controlled hot water circulation pump
Switch on/off temperature of solid fuel boiler( Independent of system)
RPM speed controlling(2*semiconductors)
Thermal energy measuring
Priority logic of multiple-tanks( 2*storage tanks)
Pump interval function
Thermostat function( Independent of system)
High temperature by-pass function(Collector cooling down)
Solar circulation bypass
Circulating pump delay function
Datalogging onto SD memory card
Internet access
Manual Control( for 7 outputs:P1…P4,R1,R2,H1)
Password setting
Recovery to factory setting
Holiday function
Manual Heating
Temperature query function
Memory Protection
Screen protection
Trouble shooting
Trouble protection
Trouble checking
Software of controller upgrade

SR21_H working principle drawing

SR21_H front view SR21_H lateral view SR21_H inside view

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