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Grundfos Magna - User Manual

Grundfos Magna
21 pages
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GRUNDFOS INSTRUCTIONS
Grundfos MAGNA, Relay Module
Installation and operating instructions

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Grundfos Magna Specifications

General IconGeneral
Frequency50/60 Hz
Temperature Range-10 °C to +110 °C
TypeCirculator Pump
Maximum Operating Pressure10 bar
Insulation ClassF
SeriesMagna
MaterialCast iron
Voltage1 x 230 V / 3 x 400 V (depending on model)

Summary

Limited Warranty

Symbols and General Description

Document Safety Symbols and Notes

Explains warning, caution, and note symbols for safe operation and potential hazards.

Relay Module Function Overview

Overview of relay module functions: external start/stop and signal relay for fault/ready/operation indication.

Electrical Connection Procedures

Connection Safety Precautions

Highlights safety requirements and cautions for electrical connections, including cable types and isolation.

Terminal Connections Explained

Details wiring for external start/stop input and signal relay outputs (NC, NO, C).

Module Mounting and Cable Connection

Connecting Module Cables

Instructions for connecting the necessary cables to the relay module's terminals.

Physical Module Installation

Attaching Module to Control Box

Step-by-step guide for physically mounting the relay module onto the pump's control box.

External Start;Stop Control

External Contact Operation and Diagram

Details how the digital input for external contact controls pump start/stop and shows the functional diagram.

Signal Relay Functions and Fault Indication

Signal Relay Fault Conditions

Details fault conditions (pump blocked, internal fault, undervoltage) that activate the signal relay.

Signal Relay Operation and Diagrams

Ready and Operation Status

Explains how the signal relay indicates pump ready status or operational status.

Signal Relay Functional Diagrams

Presents functional diagrams for fault, ready, and operation indications of the signal relay.

Setting Priority Management

External Control Signal Priority

Explains how external signals influence pump settings and lists priority levels for control panel vs. external inputs.

Troubleshooting Common Faults

Fault Finding Chart and Remedies

Provides a chart listing common faults, their causes, and recommended remedies for the relay module.

Module Verification and Specifications

Checking Module Installation and Operation

Instructions on checking the module's correct mounting and operation using LED indicators.

Technical Input;Output Specifications

Details technical parameters for start/stop input and signal relay output, including ratings.

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