Larsen & Toubro C*2000 Series, Руководство пользователя

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Safety Instructions
iv
Cx2000 AC Drive
(3) Trial run
 Check all parameters during operations. Changing parameter values might be required depending
on the load.
 Always apply permissible range of voltage to each terminal as indicated in this manual. Otherwise,
it could lead to inverter damage.
(4) Operation methods
 When the Auto restart function is selected, stay away from the equipment as a motor will restart s
uddenly after an alarm stop.
 The Stop key on the keypad is valid only when the appropriate function setting has been
made. Prepare an emergency Stop switch separately.
 If an alarm reset is made with the reference signal present, a sudden start will occur. Check that
the reference signal is turned off in advance. Otherwise an accident could occur.
 Do not modify or alter anything inside the inverter.

Motor might not be protected by electronic thermal function of inverter.
 Do not use a magnetic contactor on the inverter input for frequent starting/stopping of the inverter.
 Use a noise filter to reduce the effect of electromagnetic interference. Otherwise nearby electronic
equipment may be affected.
 In case of input voltage unbalance, install AC reactor. Power Factor capacitors and generators
may become overheated and damaged due to potential high frequency noise transmitted from
inverter.
 Parameters will be set to default settings after parameter initializing. Do re-set necessary
parameters before starting the inverter.
 Inverter can easily be set to high-speed operations, Verify capability of motor or machinery prior to
operating unit.
 Stopping torque is not produced when using the DC-Break function. Install separate equipment
when stopping torque is needed.
(5) Fault prevention precautions
 Provide a safety backup such as an emergency brake which will prevent the machine and
equipment from hazardous conditions if the inverter fails
(6) Maintenance, inspection and parts replacement
 Do not conduct a megger (insulation resistance) test on the control circuit of the inverter.
 Refer to Chapter 12 for periodic inspection (parts replacement)