Mitsubishi Electric FR-F700PJ Series, Инструкция по эксплуатации

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Selection and protection of a motor
(2) Electronic thermal O/L relay operation under IPM motor control (Pr.9)
This function detects the overload (overheat) of the motor and trips the inverter by stopping the operation of the transistor
at the inverter output side. (The operation characteristic is shown below.)
 Set the rated current (A) of the motor in Pr.9 .
Performing IPM parameter initialization automatically sets the rated current of the IPM motor.
(Refer to page 86)
 Set "0" in Pr.9 when you do not want to activate the electronic thermal relay function. An example for this case is when
using an external thermal relay for the motor. (Note that the output transistor protection of the motor is activated.
(E.THT))

MM-EFS

MM-EF
*The % value denotes the percentage to the rated motor current.

Operation range: Range on the right of characteristic curve

Non-operation range: Range on the left of characteristic curve
NOTE
 Protective function by electronic thermal relay function is reset by inverter power reset and reset signal input. Avoid
unnecessary reset and power-OFF.
IPM IPM IPM
0 20 40 60 80 100 120 140 160 180 200
Inverter output current (%)*
50
60
70
0
60
120
180
240
150r/min
500r/min
150r/min
500r/min
1125r/min
750r/min
1500r/min
750r/min
1125r/min
1500r/min
Range for transistor
protection
(min) unit display in this range
(s) unit display in this range
Thermal relay operation time (min)
Thermal relay operation time (s)
900r/min
1350r/min
1800r/min
180r/min
600r/min
0 20 40 60 80 100 120 140 160 180 200
Inverter output current (%)*
50
60
70
0
60
120
180
240
900r/min
1350r/min
1800r/min
180r/min
600r/min
Range for transistor
protection
(min) unit display in this range
(s) unit display in this range
Thermal relay operation time (min)
Thermal relay operation time (s)