Danfoss FC 111 Safety guide

Safety Guide

VLT® Flow Drive FC 111

*130R0981*

1 Safety Instructions

1.1 Overview

This Safety Guide only provides general safety precautions for the drive. When operating or programming the drive, refer to the Operating Guide or Programming Guide for applicable safety instructions.

Make sure that all personnel working on or with the drive have read and understood this guide and any additional product manuals. Contact Danfoss if you are unclear of the given information, or if you are missing information.

1.2 Target Group and Necessary Qualifications

Correct and reliable transport, storage, installation, operation, and maintenance are required for the trouble-free and safe operation of the AC drive. Only skilled personnel are allowed to perform all related activities for these tasks. Skilled personnel are defined as properly trained staff, who are familiar with and authorized to install, commission, and maintain equipment, systems, and circuits in accordance with pertinent laws and regulations. Also, the skilled personnel must be familiar with the instructions and safety measures described in this manual and the other product-specific manuals. If you are not a skilled electrician, do not perform any electrical installation, and troubleshooting activities.

Only Danfoss authorized, skilled personnel are allowed to repair this equipment. Further training is required to perform the activities related to repair.

1.3 Safety Symbols

D A N G E R

Indicates a hazardous situation which, if not avoided, will result in death or serious injury.

W A R N I N G

Indicates a hazardous situation which, if not avoided, could result in death or serious injury.

C A U T I O N

Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

N O T I C E

Indicates information considered important, but not hazard-related (for example, messages relating to property damage).

1.4 General Safety Precautions

W A R N I N G

LACK OF SAFETY AWARENESS

This document gives important information on how to prevent injury and damage to the equipment or the system. Ignoring

them can lead to death, serious injury, or severe damage to the equipment.

Make sure to fully understand the dangers and safety measures incurred in the application.

W A R N I N G

HAZARDOUS VOLTAGE

AC drives contain hazardous voltage when connected to the AC mains or connected on the DC terminals. Failure to perform

installation, start-up, and maintenance by skilled personnel can result in death or serious injury.

Only skilled personnel must perform installation, start-up, and maintenance.

Voltage [V]

Power range [kW (hp)]

Minimum waiting time (minutes)

3x400

0.37–7.5 (0.5–10)

3x400

11–90 (15–125)

3x400

110–315 (150–450)

VLT® Flow Drive FC 111

Safety Guide

Safety Instructions

W A R N I N G

UNINTENDED START

When the drive is connected to AC mains, DC supply, or load sharing, the motor may start at any time. Unintended start during

programming, service, or repair work can result in death, serious injury, or property damage. Start the motor with an external

switch, a fieldbus command, an input reference signal from the local control panel (LCP), via remote operation using MCT 10

software, or after a cleared fault condition.

Disconnect the drive from the mains.

Press [Off/Reset] on the LCP before programming parameters.

Ensure that the drive is fully wired and assembled when it is connected to AC mains, DC supply, or load sharing.

W A R N I N G

DISCHARGE TIME

The drive contains DC-link capacitors, which can remain charged even when the drive is not powered. High voltage can be

present even when the warning indicator lights are off.

Failure to wait the specified time after power has been removed before performing service or repair work could result in death or

serious injury.

Stop the motor.

Disconnect AC mains, permanent magnet type motors, and remote DC-link supplies, including battery back-ups, UPS, and

DC-link connections to other drives.

Wait for the capacitors to discharge fully. The minimum waiting time is specified in the table Discharge time and is also visible

on the nameplate on top of the drive.

Before performing any service or repair work, use an appropriate voltage measuring device to make sure that the capacitors

are fully discharged.

Table 1: Discharge Time

W A R N I N G

EQUIPMENT HAZARD

Contact with rotating shafts and electrical equipment can result in death or serious injury.

Ensure that only trained and qualified personnel perform installation, start-up, and maintenance.

Ensure that electrical work conforms to national and local electrical codes.

C A U T I O N

INTERNAL FAILURE HAZARD

An internal failure in the drive can result in serious injury when the drive is not properly closed.

Ensure that all safety covers are in place and securely fastened before applying power.

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