Mitsubishi Electric FREQROL Spécifications télécharger pdf (Page 26)

Precautions for Operation/Selection

Safety Precautions

z To operate the inverter correctly and safely, be sure to read the

"instruction manual" before starting operation.

z This product has not been designed or manufactured for use

with any equipment or system operated under life-threatening

conditions.

z Please contact our sales office when you are considering using

this product in special applications such as passenger mobile,

medical, aerospace, nuclear, power or undersea relay

equipment or system.

z Although this product is manufactured under strict quality

control, safety devices should be installed when a serious

accident or loss is expected by a failure of this product.

z The load used should be a three-phase induction motor only.

z A magnetic contactor (MC) provided on the input side should

not be used to make frequent starts and stops. It could cause

the inverter to fail.

z However, at this time, the motor cannot be brought to a sudden

stop. Hence, provide a mechanical stopping/holding mechanism

for the machine/equipment which requires an emergency stop.

z It will take time for the capacitor to discharge after shutoff of the

inverter power supply. When accessing the inverter for

inspection, wait for at least 10 minutes after the power supply

has been switched off, and check to make sure that there are no

residual voltage using a tester or the like.

z Application of power to the output terminals (U, V, W) of the

inverter will damage the inverter. Therefore, fully check the

wiring and sequence to ensure that wiring is correct, etc. before

powering on.

z The terminals P/+, PR, P1, N/- are provided for connection of a

dedicated option. Connect only a dedicated option. Do not short

the frequency setting power supply terminal 10 and common

terminal 5 or the terminal PC and terminal SD.

z When the inverter is connected

under a large-capacity power

transformer (500kVA or more

transformer) or when a power

capacitor is to be switched over,

an excessive peak current may

flow in the power input circuit,

damaging the inverter.

To prevent this, always install an optional AC reactor (FR-HAL).

When connecting a single-phase 100V power input model to a

power transformer (50kVA or more), install an AC reactor (FR-

HAL) so that the performance is more reliable.

z If a surge voltage occurs in the power supply system, this surge

energy may flow into the inverter, causing the inverter to display

overvoltage protection (E.OV) and come to an inverter trip. To

prevent this, always install an optional AC reactor (FR-HAL).

z Avoid hostile environment where oil mist, fluff, dust particles,

etc. are suspended in the air, and install the inverter in a clean

place or put it in an ingress-protected "enclosed" enclosure.

When placing the inverter in an enclosure, determine the

cooling system and enclosure dimensions so that the

surrounding air temperature of the inverter is within the

permissible value. (refer to page 7 for the specified value)

z Do not install the inverter on wood or other combustible material

as it will be hot partly.

z Install the inverter in the vertical orientation.

z The inverter can be operated as fast as a maximum of 400Hz by

parameter setting. Therefore, incorrect setting can cause a

danger. Set the upper limit using the maximum frequency limit

setting function.

z A setting higher than the initial value of DC injection brake

operation voltage or operation time can cause motor overheat

(electronic thermal relay error).

z Do not set Pr. 70 Special regenerative brake duty except for using

the optional brake resistor. This function is used to protect the

brake resistor from overheating. Do not set the value exceeding

permissible duty of the brake resistor.

Precautions for use of the inverter

Operation

Wiring

Power supply

500

1000

1500

Range

requiring

installation

of the reactor

Wiring length (m)

Power

supply

system

capacity

(kVA)

Installation

Setting

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 32 33 34

Commentaires sur ces manuels

Pas de commentaire

Mitsubishi Electric FREQROL Spécifications Page 26

Commentaires sur ces manuels

Produits connexes et manuels pour Tournevis électriques Mitsubishi Electric FREQROL