Nord Drivesystems BU 0500 User Manual Download Page 19

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1 General

BU 0500 EN-1516

1.5.1 Explanation of labels used

DANGER

Indicates an immediate danger, which may result in death or serious injury.

WARNING

Indicates a possibly dangerous situation, which may result in death or
serious injury.

CAUTION

Indicates a possibly dangerous situation, which may result in slight or
minor injuries.

NOTICE

Indicates a possibly harmful situation, which may cause damage to the
product or the environment.

Note

Indicates hints for use and useful information.

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1.5.2 List of safety and installation notes

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DANGER!

Electric shock

The device operates with a dangerous voltage. Touching certain conducting components (connection terminals,
contact rails and supply cables as well as the PCBs) will cause electric shock with possibly fatal consequences.

Even when the motor is at a standstill (e.g. caused by an electronic block, blocked drive or output terminal short-
circuit), the line connection terminals, motor terminals and braking resistor terminals (if present), contact rails,
PCBs and supply cables may still conduct hazardous voltages. A motor standstill is not identical to electrical
isolation from the mains.

Only carry out installations and work if the device

is disconnected from the voltage

and

wait at least

5 minutes

after the mains have been switched off! (The equipment may continue to carry hazardous voltages for

up to 5 minutes after being switched off at the mains).

Follow the

5 Safety Rules

(1. Switch off the power, 2. Secure against switching on, 3. Check for no voltage,

4. Earthing and short circuiting, 5. Cover or fence off neighbouring live components).

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DANGER!

Electric shock

Even if the drive unit has been disconnected from the mains, a connected motor may rotate and possible
generate a dangerous voltage. Touching electrically conducting components may then cause an electric shock
with possible fatal consequences.

Therefore prevent connected motors from rotating.

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WARNING

Electric shock

The voltage supply of the device may directly or indirectly put it into operation, or touching electrically conducting
components may then cause an electric shock with possible fatal consequences.

Therefore,

all poles

of the voltage supply must be

disconnected

. For devices with a

3-phase

supply,

L1 / L2 / L3

must be disconnected. For devices with a

single phase

supply,

L1 / N

must be disconnected. For

devices with a DC supply,

–DC / +B

must be disconnected. Also, the motor cables

U / V / W

must be

disconnected.

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