Chapter 5 Trouble shooting and maintenance
5-14
5.5 Maintenance and inspection
The
iDrive
doesn’t need daily inspection and maintenance.
To ensure long-term reliability, follow the instructions below when performing regular inspection.
ALWAYS turn the power off and wait for the keypad LED display to extinguish before inspection
or maintenance begins to avoid potential shock hazard caused by high residual charge in the DC
link capacitors.
If in doubt wait 10 minutes after switching off power supply, then test across ter and – with
a multi-meter for the presence of DC voltage.
(1) Clean up any accumulation of dust or foreign matter inside the inverter.
(2) Check if there are any loose terminal screws and securing screws. Tighten all loose screws.
(3) Insulation tests
(a) Disconnect all leads connecting
iDrive
with external circuits when performing insulation
tests.
(b) Internal insulation test should be performed on the main circuit of the
iDrive
only. Use a
high resistance 500VDC meter with insulating resistance higher than 5M
Ω
.
See diagram below: -
耐压绝缘测试的接线图
Caution! Do not perform this test on the control circuit or damage will occur.
L1 (L) T1 (U)
L2
iDrive
T2 (V)
L3 (N) T3 (W)
Power source
(Disconnected)
Motor
Ground terminal
DC-500V high resistance meter
PE