Mitsubishi Electric FR-F802-E Instruction Manual page 115

FR-F800 Series
Instruction Manual Supplement
1
Instructions for compliance with the EU Directives
 EMC Directive
The standard is as follows.
• EMC Directive: 2014/30/EC
• Standard: EN 61800-3:2004+A1:2012 (Second environment / PDS Category C3)
The FR-F806 is compliant with the following standard.
EN 61800-3:2004+A1:2012 (First environment / PDS Category C2, Second environment / PDS Category C3
*1 The applicable standard depends on the type of the built-in EMC filter.
 Motor overload protection
To use the electronic thermal function for motor overload protection, set a rated motor current in Pr.9 Electronic
thermal O/L relay.
Operational characteristic of the electronic thermal relay
function
Pr.9 = 50% setting Pr.9 = 100% setting
of inverter rating ∗1, 2 of inverter rating
70
30 Hz or more
30 Hz
20 Hz
or more ∗3
20 Hz 10 Hz
60
10 Hz
6 Hz
6 Hz
0.5 Hz
0.5 Hz
50
240
180
120
60
105%
52.5%
50 100 120
Inverter output power (%)
(% to the inverter rated current)
NOTE
• The internal accumulated heat value of the electronic thermal O/L relay is reset to the initial value by the inverter's
power reset or reset signal input. Avoid unnecessary reset and power-OFF.
• When multiple motors are driven with a single inverter or when a multi-pole motor or a special motor is driven, install
an external thermal relay (OCR) between the inverter and motors. When setting an external thermal relay, note that
the current indicated on the motor rating plate is affected by the line-to-line leakage current. (Refer to the Instruction
Manual (Detailed).)
• The cooling effect of the motor drops during low-speed operation. Use a thermal protector or a motor with built-in
thermistor.
• When the difference between the inverter and motor capacities is large and the set value is small, the protective
characteristics of the electronic thermal relay function will be deteriorated. In such case, use an external thermal
relay.
• A special motor cannot be protected by the electronic thermal relay function. Use an external thermal relay.
• Motor over temperature sensing is not provided by the electronic thermal O/L relay.
• Electronic thermal memory retention function is not provided by the drive.
∗2
∗3
Operation region
Region on the right of
characteristic curve
Non-operation region
Region on the left of
characteristic curve
Characteristic when electronic thermal relay
function for motor protection is turned off
(When Pr.9 setting is 0 (A))
Range for
the transistor
protection
∗4
150 230
This function detects the overload 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 Pr.71 = "1, 13 to 16, 50, 53, or 54". (This provides a 100%
continuous torque characteristic in the low-speed range.)
2.
Set the rated motor current 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 output
current. It is not the percentage to the rated motor current.
*3 When the electronic thermal relay function dedicated to the
Mitsubishi Electric constant-torque motor is set, this characteristic
curve applies to operation at 6 Hz or higher.
*4 Transistor protection is activated depending on the temperature of
the heatsink. The protection may be activated even with less than
150% depending on the operating conditions.
1
*1
)
BCN-C22005-865