Resol GmbH

Resol - Model DeltaSol SLT - Solar Controller

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The DeltaSol SLT effortlessly controls even complex systems and enables adaptation to the individual system requirements. Numerous pre-programmed optional functions such as thermal disinfection or zone loading can be combined and parameterised. It is also possible to directly choose from 27 pre-programmed basic systems. The operation via 2 main buttons and 1 adjustment dial, the Lightwheel, follows the well-known operating concept. The manual mode and the holiday function can be activated by pressing a single button

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4 relay outputs (incl. 1 potential-free extra-low voltage relay)
4 inputs for Pt1000 or Pt500 temperature sensors
Input for 1 analogue Grundfos Direct SensorT™ and 1 frequency input
1 V40 impulse input (also usable as a Pt1000, Pt500 or KTY temperature sensor input)
2 PWM outputs for the speed control of high-efficiency pumps
Numerous pre-programmed optional functions
27 basic system layouts to choose from
Automatic function control according to VDI 2169
MicroSD card slot
Data logging, easy transfer of controller adjustments prepared and firmware updates via SD card
Heat pump demand (optional)

Inputs: 4 inputs for Pt1000 or Pt500 temperature sensors, 1 analogue Grundfos Direct Sensor™, 1 FlowRotor, 1 V40 impulse input (also usable as a Pt1000, Pt500 or KTY temperature sensor input)
Outputs: 3 semiconductor relays, 1 potential-free extra-low voltage relay, 2 PWM outputs (switchable to 0-10 V)
PWM frequency: 512 Hz
PWM voltage: 10.8 V
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
1 (1) A 30 V= (potential-free relay)
Total switching capacity: 3 A 240 V~
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type X attachment
Standby: 0.75 W
Temperature controls class: I
Energy efficiency contribution: 1 %
Mode of operation: type 1.B.C.Y action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus^®, MicroSD card slot
VBus^® current supply: 60 mA
Functions: operating hours counter, tube collector function, zone loading, heat exchange, speed control, heat quantity measurement, adjustable system parameters and optional functions (menu-driven), balance and diagnostics function, function control according to VDI 2169
Housing: plastic, Pc-ABS and PMMA
Mounting: wall mounting, mounting into patch panels is possible
Indication/Display: Full graphic display, control lamp (Lightwheel^®)
Operation: 4 push buttons and 1 adjustment dial (Lightwheel^®)
Ingress protection: IP 20 / EN 60529
Protection class: I
Ambient temperature: 0 ... 40 °C
Pollution degree: 2
Dimensions: 110 x 166 x 47 mm
Maximum altitude: 2000 m above MSL
Fuse: T4A