Name: Control panel LC 231
Brand: Grundfos
Price: 726.03 EUR
Availability: InStock

Description
Reviews

Grundfos LC 231 – pump control panel

Grundfos LC 231 is a compact control panel for one or two pumps in emptying and filling applications. It is suitable for small sewage systems, commercial buildings, tanks and other level control installations.

Level control Automatically controls one or two pumps according to the liquid level.

Built-in protection Certified motor protection and operating current control.

Easy setup Intuitive interface and Grundfos GO support via Bluetooth Smart.

Description Options and models Features Comparison

Control panel Grundfos LC 231

LC 231 is a compact control panel for pumping systems with one or two pumps. The controller can operate in emptying or filling mode according to the needs of the installation.

The board uses signals from float switches or an analog level transmitter. Preset settings are available for faster system configuration.

Main applications

Wastewater pump control.
Emptying of shafts and collection tanks.
Filling water tanks.
Small sewage treatment plants.
Pumping systems in commercial and public buildings.
Automatic control of one or two pumps according to the level.

Operating modes

Emptying: The pumps are turned on when the level in the pit or tank reaches the set value.
Filling: The pumps are turned on when the level drops below the set value and are turned off when filled.

The specific operating mode and the on and off levels are set according to the application, the sensors used, and the system configuration.

Advantages

Compact design for installation in limited space.
Support for one or two pumps.
Direct start of the engines.
Built-in electronic overload protection.
Measurement of operating current.
Possibility of control via floats or analog level transmitter.
Support for up to five control levels.
Intuitive interface for setup and monitoring.
Bluetooth Smart connection with the Grundfos GO app.
Possibility of integration with SCADA systems through communication modules.

What does DOL mean?

DOL stands for Direct-On-Line. In this method, the motor is connected directly to the power supply via the control panel.

The DOL configuration is suitable for motors with current within the permissible value for the selected LC 231 model.

Choose model LC 231

Model	Configuration	Suitable for	Product number
231 1×1-12 DOL PI	One pump, direct start, up to 12 A	Single-pump systems with motor current up to 12 A	99369644
231 2×1-9 DOL PI	Two pumps, direct start, up to 9 A per pump	Systems with two pumps and motor current up to 9 A per pump	99369650

231 1×1-12 DOL PI

Compact control panel for one pump with direct start and permissible motor current up to 12 A. Suitable for small pumping stations, shafts and tanks with one working pump.

Product number: 99369644

231 2×1-9 DOL PI

Control panel for two pumps with direct start and permissible motor current up to 9 A per pump. Suitable for systems with backup pump, pump alternation and higher required capacity.

Product number: 99369650

Select the model according to the number of pumps and the rated motor current. Do not use a motor panel with a current higher than the permissible value for the selected configuration.

Functions and protections

Level control

The LC 231 can control the system via float switches or an analog level transmitter. The controller supports up to five control levels for normal operation, alarms and protection.

Pump protection

Overcurrent protection.
Engine overheating protection.
Dry running protection via sensor signal.
High water level alarm.
Check for incorrect phase sequence.
Signaling for missing phase.
Check for sensor mismatch or damage.
Alert for too frequent restarts.
Possibility of signal in case of intrusion or water on the floor according to the configuration.

Anti-blocking function

The anti-blocking function can start the pump at a certain interval for a short time. This limits the risk of blockage due to deposits, limescale or prolonged standstill.

Grundfos GO

Setup, commissioning, status monitoring and alarm checking can be performed via Bluetooth Smart and the Grundfos GO app. The app provides access to pump and controller parameters from a mobile device. [32]

Alarm and data log

Storage of the last 20 alarms and warnings.
Data on total working time.
Operating hours of each pump.
Number of starts and stops.
Last time at work.
Power consumption according to configuration.
Service indication.

Communication and SCADA

The LC 231 can be integrated with supervisory systems via optional CIM communication modules. This allows remote monitoring, changing settings and accessing alarms and operating data.

Model comparison

Characteristics	231 1×1-12 DOL PI	231 2×1-9 DOL PI
Number of controlled pumps	1	2
Start method	DOL - direct start	DOL - direct start
Maximum motor current	Up to 12A	Up to 9 A per pump
Application	Single-pump system	Two-pump system
Level control	Floats or analog level transmitter	Floats or analog level transmitter
Operating mode	Emptying or filling	Emptying or filling
Motor protection	Built-in electronic protection	Built-in electronic protection
Grundfos GO	Yes	Yes
Product number	99369644	99369650

How to choose a model?

231 1×1-12 DOL PI: Choose this model for a single pump with a rated current of up to 12 A.
231 2×1-9 DOL PI: Choose this model for two pumps with a rated current of up to 9 A per pump.
DOL: Suitable for direct-on-line motors.
LC 231: Compact panel with built-in motor protection and level control.

Before selecting, check the number of pumps, the rated motor current, the electrical diagram, the type of sensors and the required operating mode.

The data is in accordance with the supplied Grundfos LC 231/LC 241 brochure and the product numbers given. Check the technical documentation and the wiring diagram before installation. The electrical connection must be carried out by a qualified specialist.

Control panel LC 231

Available Options

Shipping & Returns

Grundfos LC 231 – pump control panel