Danfoss VLT HVAC Drive FC 102 Посібник з експлуатації - Сторінка 6

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Danfoss VLT HVAC Drive FC 102 Посібник з експлуатації

Safety

2 Safety

2.1 Safety Symbols

The following symbols are used in this guide:

WARNING

Indicates a potentially hazardous situation that could

result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation that could

result in minor or moderate injury. It can also be used to

alert against unsafe practices.

NOTICE

Indicates important information, including situations that

can result in damage to equipment or property.

2.2 Qualified Personnel

Only persons with proven skills are allowed to assemble,

install, program, commission, maintain, and decommission

the products. Persons with proven skills

•

Are qualified electrical engineers, or persons who

have received training from qualified electrical

engineers and are suitably experienced to

operate devices, systems, plant, and machinery in

accordance with the general standards and

guidelines for safety technology.

•

Are familiar with the basic regulations concerning

health and safety/accident prevention.

•

Have read and understood the safety guidelines

given in this manual and also the instructions

given in the operating instructions of the

frequency converter.

•

Have a good knowledge of the generic and

specialist standards applicable to the specific

application.

Users of power drive systems (safety related) (PDS(SR)) are

responsible for:

•

Hazard and risk analysis of the application.

•

Identifying safety functions required and

allocating SIL or PLr to each of the functions.

•

Other subsystems and the validity of signals and

commands from them.

•

Designing appropriate safety-related control

systems (hardware, software, parameterization,

and so on).

Safe Torque Off

Protective measures

•

2.3 Safety Precautions

See the Safety chapter in the relevant operating

instructions/guides for general safety precautions.

After installation of STO, perform a commissioning test

as specified in chapter 4.5 STO Commissioning Test. A

passed commissioning test is mandatory after first instal-

lation and after each change to the safety installation.

RISK OF DEATH AND SERIOUS INJURY

If external forces act on the motor, for example in case

of vertical axis (suspended loads), and an unwanted

movement, for example caused by gravity, could cause a

hazard, the motor must be equipped with extra

measures for fall protection. For example, install extra

mechanical brakes.

RISK OF DEATH AND SERIOUS INJURY

STO (that is, removal of 24 V DC voltage supply to

terminal 37) does not provide electrical safety. The STO

function itself is not sufficient to implement the

Emergency-Off function as defined by EN 60204-1.

Emergency-Off requires measures of electrical isolation,

for example by switching off mains via an additional

contactor.

Only qualified and skilled personnel is allowed to

install and commission safety engineering

systems.

Install the frequency converter in an IP54 cabinet

as per IEC 60529 or in an equivalent environment.

In special applications, a higher IP protection

rating may be necessary.

Ensure short-circuit protection of the cable

between the safety option and the external safety

device according to ISO 13849-2 table D.4. When

external forces influence the motor axis (for

example suspended loads), extra measures (for

example a safety holding brake) are required to

eliminate hazards.

CAUTION

WARNING

MG37D502