Siemens 7UG0571-1FT20

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Operating Instructions
Automatic Power Factor Controller Relay
7UG0571-1FT20
7UG0572-1GT20
7UG0
IEC 60947-5-1
Please read and understand these instructions before installing,
operating, or maintaining the equipment.
DANGER
Hazardous voltage can cause death or serious injury.
Disconnect power before working on equipment.
CAUTION
Reliable functioning of the equipment is only ensured
with certied components.
Overvoltage category III
(Refer IEC 60947-1)
NOTICE
This product has been designed for environment A. Use of this product
in environment B may cause unwanted electromagnetic disturbances in
which case the user may require to take adequate mitigation measures.
Technical Data
Designation 7UG0571-1FT20 7UG0572-1GT20
Type Automatic Power Factor Controller
Operating range 50 to 440 VAC (L-L)
30 to 250 VAC (L-N)
AC Network 3Φ 4W / 3Φ 3W / 2Φ 2W/ 1Φ 2W
Display parameters Power Factor, True RMS voltage, Current, Frequency,
Power (KW, KVA, KVAr), Energy (KWh, KVAh), Temperature
Control Supply 90 to 250 VAC, 50/60Hz
Power consumption 15VA
Frequency range 50/60Hz
Operating temperature 0°C to 60°C
Humidity upto 95% ,without moisture condensation
Alarm mode (relay output) Over voltage, Under voltage, Over Compensate, Under Compensate,
CT Polarity error, No Voltage, Step error, Over Temperature
Trip indication Backlight turns to Orange
No. of relay outputs 8
(Additional 2 for Alarm and Fan)
12
(Additional 2 for Alarm and Fan)
Rated current of relay outputs (@250VAC) 5A* (AC12), 1A (AC15)
CT Burden 20 mohms
Switching program Automatic / Linear / Rotational
Mounting Panel mounting
SCPD for relay output (For Short circuit current
of 1kA as per IEC 60947-5-1)
6A, gL, HRC fuse
* 5A AC12 rating is for individual relay contact. If multiple relays are ON, relay AC12 rating will be limited to 1.2A @ 250V.

Siemens 7UG0571-1FT20 Specifications

General

Category	Protection relay
Digital Inputs	8
Relay Outputs	4
Protection Degree	IP20
Mounting	DIN Rail
Communication	Modbus RTU
Housing	DIN Rail Mount
Rated Current	5 A
Operating Temperature	-25 to +70 °C
Standards	IEC 60255
Function	Overcurrent and Earth Fault Protection

Summary

Siemens Automatic Power Factor Controller Relay

Operating Instructions

General guidance for operating the automatic power factor controller relay.

Technical Data

Detailed specifications and technical parameters of the relay.

Terminal Connections and Wiring Diagrams

Wiring Diagrams for Different Configurations

Visual representations of terminal connections for various power system configurations.

Serial Communication Specifications

Details on RS485 communication interface, protocol, and settings.

Front Panel Description and Operation

Test Mode and Configuration Navigation

Procedures for test mode and navigating the device configuration menus.

Online Display and Backlight Indications

Explanation of online display modes, backlight status, and CT error.

CT Error Detection

Information on how CT polarity reversal is detected and displayed.

Configuration Menu Structure

Installation Password (PW1) Configuration

Configuration settings accessible after entering the installation password.

Technical Password (PW2) Configuration

Advanced configuration settings accessible via the technical password.

Configuration Parameters and Settings

Level 1 Configuration Parameters

Parameters configurable at Level 1, including network, CT/PT, and control settings.

Level 2 Configuration Parameters

Parameters configurable at Level 2, including protection and response settings.

Level 3 Relay Configuration

Configuration of individual relay outputs for control switching or alarm functions.

Fan Settings and Operation

Configuration options for the device's cooling fan based on temperature.

Modbus Register Map

Modbus Readable Parameters

List of Modbus registers for reading device parameters and status.

Modbus Constant Parameters

Modbus registers for constant parameters and device identification.

Modbus Coil Status

Modbus registers for reading the status of device coils.

Modbus ReadableWritable Parameters

Modbus registers for reading and writing device configuration and settings.

User Guide and Switching Programs

Switching Program Modes

Details on manual, rotational, automatic, and linear switching program modes.

Physical Installation and Connections

Instructions for sensor assembly, device mounting, and cable termination.

Safety and Disposal Information

Guidelines for industrial security and environmentally friendly product disposal.