Solar and differential temperature controllers

Solar controller DeltaSol^® MX

The DeltaSol^® MX is equipped with 14 relay outputs for the speed control of energy-saving high-efficiency pumps; for speed control of standard pumps, the 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 parameterization of the system; functional additions such as a drainback option broaden the range of applications.

Function overview

Max. heat sources (collector fields):

Max. heat loads (tanks):

Display:

Full graphic display

Sensor inputs (temperature):

15 (19)¹⁰

Relay outputs:

Standard relay:

Speed control:

Second ΔT-function:

2 tank priority logic:

Thermostat function:

Real time clock (timer function):

Energy metering:

Freeze protection function:

Tube collector function:

Min. collector temperature adjustable:

Cooling functions:

Emergency shutdown functions:

VBus®:

Celsius/Fahrenheit conversion:

Drainback option:

Drainback booster option:

Heat dump function:

Energy-efficient switch-mode power supply:

Technical data
Sensor inputs: 12 inputs for Pt1000, Pt500 or KTY temperature sensors (thereof 7 can be used for RTA11-M remote controls), 3 V40 impulse inputs, 1 input for a CS10 irradiation sensor, 4 Grundfos Direct Sensors™ (2 x analog, 2 x digital)
Relay outputs: 14 relay outputs, thereof 13 semiconductor relays for pump speed control, 1 dry-contact relay and 4 PWM outputs (convertible to 0-10 V signal outputs)
Switching capacities:
1 (1) A 240 V~ (semiconductor relay)
4 (1) A 240 V~ (potential-free relay)
4 (1) A 24 DC (potential-free relay)
Power supply: 100 ... 240 V~, 50-60 Hz
Power consumption: < 1W (standby)
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
Installation: wall mounting, also suitable for mounting into patch panels
Display: Full graphic display
Operation: 7 push buttons at the front
Protection type: IP 20 / DIN EN 60529
Ambient temperature: 32 ... 104 °F
Dimensions: 10.00 × 8.07 × 1.85 "
Bus: RESOL VBus^®

¹⁰ 7 of them can optionally be used for RTA11-M remote controls; incl. Grundfos Direct Sensors™

Unit °F and °C selectable!The controller can be branded with your own logo. Please contact our sales team.

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
Smart Display SD3	17,5 mA
GA3 Large Display	1 mA
AM1 alarm module	16,5 mA
HKM3	1 mA
EM	1 mA

Installation manual

Solar controller DeltaSol^® MX
System controller for solar and heating systems
Article-no: 115 992 07 | Price bracket A

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 17 | Price bracket A

The cTuVUS certification confirms that the controller meets the demands of the UL 60730-1:2009 and CSA B60730.1:2002 standards.