Mitsubishi Electric FR-A700 Technical Manual page 524

4.1 Standard connection diagram
The circuit diagram shown in this chapter are reference circuit diagrams used to activate functions.
When designing actual circuits, examine the operations of the machine and system and the rating, safety interlocks and other
devices such as the contactors, relays and other equipment.
4.1.1 The inverter equipped with magnetic contactor on primary side (FR-AX manual
controller used)
Ready
"OFF"
PB2
Frequency setting
*1 This magnetic contactor is provided to prevent an automatic restart when power is restored after a power failure. Use the start
signal (ON or OFF of STF, STR) to make a start or stop.
*2 The inverter stops when both terminals STF and STR are closed simultaneously.
*3 When the power supply is 400V class, install a step-down transformer.
*4 When the motor shaft inertia is small, for example, this circuit may be omitted by utilizing the current limit function of the inverter.
common
(common)
MCCB
Power
supply
T *3
F
(Coasting interlock timer)
MC
*4
"ON"
PB1
T
FR-AX manual controller
Hz
VRN
"SPEED"
Calibration
Frequency
resistor
meter
SD2
SD1
"FWD"
STF
STR
"REV"
"SPEED SET"
potentiometer
VRS
*1
Inverter
MC
R
S
T
C
T B
MC
FM
FM
SD
STF
STR
10
10
2
2
5
5
558
PRACTICAL CIRCUITS
common
(common)
U
Motor
V IM
W
Ground