SEW MOVITRAC LTP series, Руководство по эксплуатации

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16
Operating Instructions – MOVITRAC® LTP
5
Prior to installation
Electrical Installation
5 Electrical Installation
It is essential to comply with the safety instructions in chapter 2 during installa-
tion.
• MOVITRAC
®
LTP units should only be installed by qualified electricians and in
accordance with local and national regulations and codes of practice.
• The MOVITRAC
®
LTP has an Ingress Protection rating of IP20. For higher IP ratings,
use a suitable enclosure or the IP55 version.
• Where the electrical supply to the drive is through a plug and socket connector, do
not disconnect until 10 minutes have elapsed after turning off the supply.
• Ensure correct earthing connections. See diagram in chapter "Drive and motor
connection" on page 20.
• The earth cable must be sufficient to carry the maximum supply fault current which
normally will be limited by the fuses or motor circuit breaker.
5.1 Prior to installation
• Ensure that the supply voltage, frequency and number of phases (single or 3-phase)
correspond to the rating of the MOVITRAC
®
LTP as delivered.
• An isolator or similar should be installed between the power supply and the drive.
• Never connect the mains power supply to the MOVITRAC
®
LTP output terminals
U, V or W.
• When installing 575 V inverters ensure the motor is always in STAR connection.
• The cables are only protected when slow blow HRC fuses or a motor circuit breaker
(MCB) are used.
• Do not install any type of automatic switchgear between the drive and the motor.
Wherever control cabling is close to power cabling, maintain a minimum separation
of 100 mm and arrange crossings at 90 °.
• Ensure that screening or armoring of power cables is effected in accordance with the
connections diagram in chapter "Drive and motor connection" on page 20.
• Ensure that all terminals are tightened to the appropriate torque.
WARNING
Danger of electrical shock. High voltages are present in the terminals and in within the
drive for up to 10 minutes after the electrical supply has been disconnected.
Severe or fatal injuries.
• Disconnect and isolate the MOVITRAC
®
LTP from the electrical supply at least
10 minutes before commencing any work on it.
HAZARD
Risk of fatal injury if the hoist falls.
Severe or fatal injuries.
• MOVITRAC
®
LTP is not designed for use as a safety device in hoist applications.
Use monitoring systems or mechanical protection devices to ensure safety.