Mitsubishi Electric FR-A820-04750-GF Instruction Manual page 106

 Capacitor discharge time / Temps de décharge du condensateur
CAUTION -Risk of Electric Shock-
Before wiring or inspection, check that the LED indicator turns OFF. Any person who is involved in wiring or inspection
shall wait for 10 minutes or longer after power OFF and check that there are no residual voltage using a digital
multimeter or the like. The capacitor is charged with high voltage for some time after power OFF, and it is dangerous.
ATTENTION -Risque de choc électrique-
Avant le câblage ou l'inspection, vérifier que le témoin LED s'éteint. Toute personne impliquée dans le câblage ou
l'inspection doit attendre 10 minutes ou plus après la mise hors tension et vérifier l'absence de tension résiduelle à
l'aide d'un multimètre numérique ou similaire. Le condensateur est chargé avec une haute tension pendant un certain
temps après la mise hors tension, ce qui est dangereux. Précautions pour ouvrir le dispositif de protection du circuit
de dérivation.
 Wiring to the power supply and the motor
• Refer to the National Electrical Code (Article 310) regarding the allowable current of the cable. Select the cable
size for 125% of the rated current according to the National Electrical Code (Article 430). For wiring the input (R/
L1, S/L2, T/L3) and output (U, V, W) terminals of the inverter, use the UL listed copper, stranded wires (rated at
75°C) and round crimp terminals. Crimp the terminals with the crimping tool recommended by the terminal
manufacturer.
 Short circuit ratings
• 200 V class: Suitable for use in a circuit capable of delivering not more than 100 kA rms symmetrical amperes,
240 V Maximum.
• 400 V class: Suitable for use in a circuit capable of delivering not more than 100 kA rms symmetrical amperes,
500V maximum.
 Motor overload protection
When using the electronic thermal relay function as motor overload protection, set the rated motor current in Pr.9
Electronic thermal O/L relay.
Operation characteristics of electronic thermal relay function
Pr. 9 = 50% setting of
inverter rating*
1.2
70
30Hz
or more*
3
20Hz
60
10Hz
6Hz
0.5Hz
50
240
180
120
60
105%
52.5%
100
50
Inverter output current (%)
(% to the rated output current)
Pr. 9 = 100% setting
of inverter rating*
1.2
30Hz or more*
3
20Hz
Operation range
Range on the right of
10Hz
characteristic curve
6Hz
Non-operation range
Range on the left of
0.5Hz
characteristic curve
Characteristic when electronic thermal
relay function for motor protection is
turned off (When Pr. 9 setting is 0(A))
Range for
transistor
protection*
4
150 230
This function detects the overload (overheat) of the motor,
stops the operation of the inverter's output transistor, and
stops the output. (The operation characteristic is shown on the
left.)
• When using the Mitsubishi Electric constant-torque motor
(1) Set one of "1, 13 to 16, 50, 53, 54" in Pr.71. (This provides a
100% continuous torque characteristic in the low-speed
range.)
(2) Set the rated current of the motor in Pr.9.
*1 When a value 50% of the inverter rated output current (current
value) is set in Pr.9
*2 The % value denotes the percentage to the inverter rated
current. It is not the percentage to the rated motor current.
*3 When you set the electronic thermal relay function dedicated to
the Mitsubishi
characteristic curve applies to operation at 6 Hz or higher.
*4 Transistor
temperature of the heat sink. The protection may be activated
even with less than 150% depending on the operating
conditions.
3
Electric constant-torque
protection is activated depending
BCN-C22005-988
motor, this
on the