Solar and heating controllers
Solar controller DeltaSol® MX
The DeltaSol® MX is equipped with 14 relay outputs and four PWM outputs for the speed control of energy-saving high-efficiency pumps; all PWM outputs can be converted into 0-10 V signal outputs. Additionally, the controller has one frequency input, three impulse inputs as well as a range of different sensor inputs. Up to five extension modules can be connected via the RESOL VBus®.
The integrated SD memory card slot enables an easy datalogging to an SD memory card as well as a quick and effortless transfer of logged system data to a PC. The large full graphic display allows the direct display of balance and progression diagrams. Pre-defined functions allow easier parameterisation of the system; functional additions such as a drainback option broaden the range of applications.
Click here to download the new DeltaSol® MX firmware
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Certified for the North-American market!
(pump speed control):
(e.g. heat exchange):
oscillating loading:
Inputs: 12 Pt1000, Pt500 or KTY temperature sensor inputs (7 of them can optionally be used for RTA11-M remote controls), 3 impulse inputs for V40 flowmeters; 4 Grundfos direct Sensors™ (2 x analogue, 2 x digital), 1 CS10 solar cell
Outputs: 13 semiconductor relays, 1 potential-free relay and 4 PWm outputs (convertible to 0-10 V signal outputs)
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
4 (1) A 24 V DC/ 240 V~ (potential-free relay)
Total switching capacity: 6.3 A 240 V~
Power supply: 100 ... 240 V~ (50 ... 60 Hz)
Supply connection: type Y attachment
Power consumption: < 1 W (standby)
Mode of operation: type 1.B.C.Y. action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus®, SD card slot
VBus® current supply: 35 mA
Functions: solar system controller for use in solar and heating systems. 7 integrated calorimeters and control of 2 weather-compensated heating circuits. Adjustable system parameters and add-on options (menu-driven), balance and diagnostics functions, function control according to BAFA guidelines
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, mounting into patch panels is possible
Indication/Display: full graphic display
Operation: 7 push buttons at the front
Ingress protection: IP 20 / IEC 60529
Protection class: I
Ambient temperature: 0 ... 40 °C
Pollution degree: 2
Dimensions: 253 × 200 × 47 mm
Bus: RESOL VBus® (max. current drain 35 mA)
10 7 of them can optionally be used for RTA11-M remote controls; incl. Grundfos Direct Sensors™ inputs
11 through additional modules
![]() The number of VBus® accessories that can be connected to one controller depends on the sum of their current consumption and on the current supply of the controller VBus®. |
|
|---|---|
| Device | Maximum current consumption |
| VBus®/PWM interface adapter | 6,5 mA |
| VBus®/USB interface adapter | 6,5 mA |
| VBus®/LAN interface adapter | 6,5 mA |
| Datalogger DL2 | 1,5 mA |
| Datalogger DL3 | VBus® 1-5: 10 mA VBus® 6: 0.5 mA |
| Smart Display SD3 | 17,5 mA |
| GA3 Large Display | 1 mA |
| AM1 alarm module | 16,5 mA |
| HKM3 | 1 mA |
| EM | 1 mA |
| STA-W | 12 mA |
Solar controller DeltaSol® MX
System controller for solar and heating systems
Article-no: 115 992 03 | Price bracket A
542.30 €
Solar controller DeltaSol® MX - Full kit
System controller for solar and heating systems incl. 6 sensors Pt1000 (2 x FKP6, 4 x FRP6)
Article-no: 115 992 13 | Price bracket A
612.70 €
Solar controller DeltaSol® MX - Full kit incl. SD3
System controller for solar and heating systems incl. SD3 and 6 sensors Pt1000 (2 x FKP6, 4 x FRP6)
Article-no: 115 992 23 | Price bracket A
711.70 €
All prices are calculated ex works, in EUR and do not include VAT.






















