• DIP-IPM
a. Turn OFF the main switches and wait for three minutes.
Check to ensure that no high voltage exists. If LED201 is ON
after start-up and LED201 is OFF after turning OFF power
source, the voltage will decrease lower than DC50V.
b. Connect connecting wires to an electrical solder bit.
c. Connect the wires to terminals, P and N on IPM. =>
Discharging is started, resulting in hot solder bit. Pay attention
not to short-circuit between terminal P and N.
d. Wait for 2 or 3 minutes and measure the voltage once again.
Check to ensure that no voltage is charged.
1. Solder bit.
2. Plug.
3. Connecting wires.
4. Transistor module (IPM).
•
•
1. Drive circuit.
2. Overheating protection circuit.
3. Sensor.
1. Checking Method of Transistor Module Outer Appearance
and Internal Circuit of Transistor Module
Procedure:
Remove all the terminals of the transistor module before check.
If items (a) to (d) are performing and the results are satisfactory,
To Next Page
Loading...
