GESTRA URB 55 User Manual (English)

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Questions and Answers:

Sarah WilkinsAug 7, 2025

How to prevent electric shock when working on GESTRA URB 55 Controller electrical systems?

G
Grant RodriguezAug 7, 2025
To avoid electric shock when working on GESTRA Controller electrical systems: * Always switch off the voltage to the equipment before working on the terminal strips (installation, electrical connection, disassembly). * Disconnect all poles of the supply cable from the mains and secure them so they cannot be switched back on. * Before starting work, check that the system is not carrying live voltage.

james89Aug 21, 2025

What to do if there is a risk of electric shock when working on GESTRA URB 55 electrical systems?

P
Phyllis WhiteAug 21, 2025
Before working on the terminal strips of GESTRA Controller (including installation, electrical connection, or removal), always switch off the voltage to the equipment. Disconnect all poles of the supply cable from the mains, ensuring it cannot be switched back on. Verify that the plant is not carrying live voltage before starting any work.

Housing material	Plastic
Application	Level control
Output signal	Relay
Supply voltage	24 V DC
Operating temperature	-10°C to +55°C
Control functions	ON/OFF control

Housing material

Plastic

Application

Level control

Output signal

Relay

Supply voltage

24 V DC

Operating temperature

-10°C to +55°C

Control functions

ON/OFF control

GESTRA URB 55 User Manual

Table of Contents

Other manuals for GESTRA URB 55

Questions and Answers:

GESTRA URB 55 Specifications

Summary

How to use this Manual

Usage for the intended purpose

Basic safety notes

Required personnel qualifications

Function

Technical data LRR 1-52 LRR 1-53

Technical data URB 55

Factory settings LRR 1-52 LRR 1-53

Factory settings URB 55

Installing the LRR 1-52 LRR 1-53 conductivity controller

Installing the URB 55

Connecting the URB 55

Connection for 24 V DC supply voltage pin assignment

Pin assignment of the data line between the URB 55 and the LRR 1-52 LRR 1-53

Safety notes for electrical connection

Wiring diagram LRR 1-52 conductivity controller

Wiring diagram LRR 1-53 conductivity controller

Electrical connection LRR 1-52 LRR 1-53

Connecting the data line between the conductivity controller and the URB 55

Changing the equipment settings

Status display on the LRR 1-52 LRR 1-53

Visual display and operating unit URB 55

Operation and navigation

Automatic functions

Entering parameters using the virtual keypad

Parameter input with password protection

The home screen of the LRR 1-52 LRR 1-53 conductivity controller

Alarms and error messages

System settings

Setting the date time

Password

Network settings

Data exchange via Modbus TCP

Configuring the conductivity controller

Setting the MIN MAX switchpoints and set point

Trend log

Test Testing the relays of the connected conductivity controller

Continuous blowdown valve Setting the flushing interval and flushing time

Continuous blowdown valve Calibrating the feedback potentiometer for the valve position display

Calibrating the conductivity electrode

Setting correction factor C

Setting the measuring range LRR 1-52

Setting the measuring range LRR 1-53

Setting the control parameters

Guide to setting control parameters

Setting automatic intermittent blowdown

System malfunctions URB 55

Display of system malfunctions in the alarm and error list using fault codes

Common faults and issues during use of the URB 55

System malfunctions LRR 1-52 LRR 1-53

What to do in the event of system malfunctions

Checking installation and function

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