Safety Precautions - Emerson EVH Series Installation Manual

Safety Precautions

ELECTRICAL SHOCK HAZARD
WARNING
Disconnect and lock out power before servicing.
Discharge all capacitors before servicing.
Use compressor with grounded system only.
Molded electrical plug must be used whenrequired.
Refer to original equipment wiring diagrams.
Electrical connections must be made by qualified electrical personnel.
Failure to follow these warnings could result in serious personal injury.
Before Performing the Installation
• It is strongly recommended to read
through this entire manual for safe and
correct installation
•
Disconnect the power supply of the device.
•
Ensure that the devices cannot be accidentally
restarted.
•
Verify isolation from the supply.
•
Earth and short circuit the device.
•
Cover or enclose any adjacent live components.
•
Only suitably qualified personnel in
accordance with EN 50110-1/-2 (VDE 0105
Part 100) may work on this device/system.
•
Before installation and before touching the
device, ensure that you are free of electrostatic
charge.
•
The functional earth (FE, PES) must be
connected to the protective earth (PE) or the
potential equalization.
•
The system installer is responsible for
implementing this connection.
•
Connecting cables and signal lines should be
installed so that inductive or capacitive
interference does not impair the automation
functions.
•
Install automation devices and related operating
elements in such a way that they are well
protected against unintentional operation.
•
Suitable safety hardware and software
measures should be implemented for the I/O
interface so that an open circuit on the signal
side does not result in undefined states in the
automation devices.
•
Ensure a reliable electrical isolation of the extra-
low voltage of the 24 V supply. Only use power
supply units complying with IEC 60364-4-41
(VDE 0100 Part 410) or HD384.4.41 S2.
•
Deviations of the input voltage from the rated
value must not exceed the tolerance limits given in
the specifications, otherwise this may cause
malfunction and dangerous operation.
•
Emergency stop devices complying with IEC/EN
60204-1 must be effective in all operating modes
of the automation devices. Unlatching the
emergency-stop devices must not cause a restart.
•
Measures should be taken to ensure the proper restart
of programs interrupted after a voltage dip or failure.
•
This should not cause dangerous operating
states even for a short time. If necessary,
emergency-stop devices should be
implemented.
•
Wherever faults in the automation system may
cause injury or material damage, external
measures must be implemented to ensure a
safe operating state in the event of a fault or
malfunction (for example, by means of separate
limit switches, mechanical interlocks, and so
on).
•
Depending on their degree of protection,
adjustable frequency drives may contain live
bright metal parts, moving or rotating
components, or hot surfaces during and
immediately after operation.
•
Removal of the required covers, improper
installation, or incorrect operation of motor or
adjustable frequency drive may cause the
failure of the device and may lead to serious
injury or damage.
•
The electrical installation must be carried out
in accordance with the relevant regulations
(for example, with regard to cable cross
sections, fuses, PE).
•
Installations containing adjustable frequency
drives must be provided with additional
monitoring and protective devices in
accordance with the applicable safety
regulations. Modifications to the adjustable
frequency drives using the operating software
are permitted.
•
All covers and doors must be kept closed during
operation.
•
Never touch live parts or cable connections of the
adjustable frequency drive after it has been
disconnected from the power supply. Due to the
charge in the capacitors, these parts may still be
live after disconnection. Fit appropriate warning
signs.
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