Solar controller with speed RPM control Lago SG 2, Lago SG 3

Product catalog summary

Overview: The document is a product brochure for the Lago SG 2 and Lago SG 3 solar controllers, designed for controlling pumps and switch-over valves in solar systems. These controllers are suitable for both pressure solar systems and drain-back systems, and they support speed-controlled pumps via PWM or 0–10 V.

Key Features:

Easy programming and operation through a selector switch and rotary knob.
Installation assistant for convenient system setup by selecting the number of connected sensors and actuators.
Automatic detection of connected sensors and the ability to query temperature curves and solar heat production.
Protection functions for collectors and pumps, and easy wall mounting with a removable base.

Applications: The controllers are compatible with flat and tubular collectors, solid fuel boilers, and layer storage systems. They measure temperature differences to control pumps and switch-over valves. The document outlines various system configurations, such as single collector systems, systems with solid fuel boilers, and systems with multiple storage tanks.

Technical Specifications:

Mains voltage: ~230 V, +10/-15%.
Power consumption: max. 5 W.
Relay switching capacity: ~250 V, AC 2 (2) A.
Max current via terminal L1’: 6.3 A.
Protection class: IP 40 (EN 60529), Class I (EN 60730-1).
Overvoltage category III, Contamination class 2 (EN 60730-1).
Operating temperature: 0 to 50 °C; Storage temperature: -25 to +60 °C.
Relative humidity: 95% RH, non-condensing.
Sensor resistances: PT1000, 1 kΩ ±0.2% at 0 °C.

Contact Information: Elster GmbH, Germany. Phone: +49 541 1214-0, Email: [email protected], Website: www.kromschroeder.com.

Catalog excerpts

Solar controller with speed RPM control Lago SG 2, Lago SG 3-1

Solar controller with speed RPM control Lago SG 2, Lago SG 3 Product brochure · GB 10 Edition 03.15 • For controlling pumps and switch-over valves on pressure solar systems or drain-back systems • Actuation of speed-controlled pumps via PWM or 0–10 V • Easy to program and operate via selector switch and rotary knob • Convenient system installation using installation assistant by selecting the number of connected sensors and actuators • Automatic detection of connected sensors • Query of temperature curves and solar heat production • Collector and pump block protection function • Easy wall mounting as base can be removed

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Solar controller with speed RPM control Lago SG 2, Lago SG 3-2

2 · Lago SG 2, Lago SG 3 · Edition 03.15 The selector switch and rotary knob for simple query of temperatures and yield or setting system parameters. Solar controller with removable base for easy wall mounting. Application The solar controllers Lago SG 2 and Lago SG 3 are suitable for use with flat and tubular collectors as well as solid fuel boilers and layer storage systems. The connected sensors measure the temperature differences and control pumps and switch-over valves on pressure solar systems or drain-back systems. The installation assistant allows the heating system to be easily installed...

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Solar controller with speed RPM control Lago SG 2, Lago SG 3-3

Lago SG 2, Lago SG 3 · Edition 03.15 · 3 System 5 (1 collector, 2 storage tanks, 1 switch-over valve) System 10 (1 collector, 1 storage tank, drain-back system) System 6 (1 collector, 2 storage tanks, 2 charge pumps) F1 Lago SG 3 System 11 (1 collector, 1 storage tank, 2 feeding areas) System 7 (1 collector, 1 storage tank or 2 storage tanks) A3 System 12 (1 collector, 1 storage tank, 3 feeding areas) System 13 (1 collector, 1 storage tank, drain-back system) A1 (F2) System 8 (1 collector, 1 storage tank, return temperature increase) System 9 (1 collector, 2 storage tanks, refeeding pump) F1...

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Solar controller with speed RPM control Lago SG 2, Lago SG 3-4

4 · Lago SG 2, Lago SG 3 · Edition 03.15 Technical Specifications Mains voltage according to DIN IEC 60 038: ~230 V, +10/-15% Power consumption: max. 5 W Switching capacity of the relays: ~250 V, AC 2 (2) A Max. current via terminal L1’: 6.3 A Protection class according to EN 60529: IP 40 Protection class according to EN 60730-1: I Overvoltage category III (EN 60730-1) Contamination class 2 (EN 60730-1) Reserve power of clock: >10 h. Permissible ambient temperature during operation: 0 to 50 °C Permissible ambient temperature during storage: -25 to +60 °C Permissible relative humidity, not condensing:...

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