Shandong Ultisolar New Energy Co., Ltd

SR81Q Solar Thermal Controller for Split Solar System to Replace SR868C8Q

SR81Q Solar Thermal Controller for Split Solar System to Replace SR868C8Q 


To replace formal SR868C8Q updated version
Temperature measurement accuracy:0.1C
10 push buttons at the front cover.
With separately keypad

Main technical data:

Max.number of collectors:1
Max.number of storage tanks:1
Max.number of relays:4
Max.number of sensors:6
Max.number of visualization application system: 1
FRT:1* Rotary vane type electron flow meter
VFS:1*Grundfos flowmeter sensor
Signal port for HE pump: IPWM1
Size of Keypad:120mm x 120mm x 18mm
Size of Controller(1.5KW version): 187mm x128mm x46mm
Size of Controller(3KW version): 218mm x165mm x55mm
Size of Controller(4KW version): 218mm x165mm x55mm
Power supply: AC100-240V,50-60Hz. .  
Power consumption: < 2.5W
Rated impulse voltage: 2.5KV
Housing: Plastic ABS
Protection type: IP41
Mounting: Wall mounting
Operation: 10 push buttons at the front cover.
Accuracy of temperature measuring: ± 0.1oC
Range of collector temperature measuring: -10oC ~220oC
Range of tank temperature measuring: 0oC ~110oC
Suitable power of pump: 3 pump possible to be connected  
Suitable power of HK (backup heating):
Inputs: 6 sensors,
1pcs*Pt1000 sensor (≤500oC) for collector (silicon cable≤280oC),
5pcs*NTC10K, B3950 sensor (≤ 135oC) for tank, (PVC cable ≤105oC),
1*FRT Rotary vane type electron flow meter
1*VFS: Grundfos flowmeter sensor
Outputs: 4 relays, for circulation pump and backup heating
1*Semiconductor relay, Max.current 1A
2*Electronmagnetic relay, Max.current 2A
1*Electronmagnetic relay, Max.current 2A
1*Potential-free extra-low voltage relay(on/off signal)
1*PWM variable frequency output(switchable 0-10v)
Ambient temperature: -10oC ~ 50oC.
Water proof grade: IP41

Main functions:

DATE---Date setting
Timed heat---backup heating
Circle---Hot water circulation
LOAD---Setup Loading tank1
PUMP---Pump control mode
COOL---Cooling function
AUX---Auxiliary function
MAN---Manual mode
BLPR---Blocking protection function
OPARR---Parallel relay function
OHQM---Thermal energy measurement
FS--- Flow meter type selection.
UNIT---C-F unit switch
RST---factory setting
PASS--- password set
Holiday function
Screen Protection
Trouble Protection
Trouble Checking

 Manual Download


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