Danfoss VLT CDS 302 Panduan Pemecahan Masalah - Halaman 15
Jelajahi secara online atau unduh pdf Panduan Pemecahan Masalah untuk Penggerak DC Danfoss VLT CDS 302. Danfoss VLT CDS 302 18 halaman. Compressor drives
Halaman Cetak
Check List
Step 4
Figure 15: The multimeter
should show diode open
IGBT static test
Step 1
Figure 16: The multimeter
should show diode open
Step 2
Figure 17: The multimeter
should show the diode drop
of around 0.4 volt on the
three terminals
Step 3
Figure 18: The multimeter
should show open diode
Static test procedures
Now reverse the meter leads, i.e. connect the
negative terminal of the meter lead to the
negative DC bus.
Note: A diode drop reading will vary depending on the model of the ohm meter
IGBT's are placed on the output of the CDS drives
• Connect the positive terminal of the multimeter
lead to the positive DC bus.
Now reverse the meter leads, i.e. connect the
negative terminal of the meter lead to the
positive DC bus.
Now repeat the procedure by connecting to the
negative DC bus in order to test the second set
of IGBTs.
• Connect the positive terminal of the meter lead
to the input terminals L1, L2, L3 in turn.
• The multimeter should show diode open.
• Connect the negative terminal of the
multimeter lead to the motor terminal U, V, W
in turn.
• The multimeter should show the diode open.
• Connect the positive terminal of the meter lead
to the motor terminals U, V, W in turn.
• The multimeter should show the diode drop
of around 0.4 volt on the three terminals.
• Connect the negative terminal of the
multimeter lead to the negative DC bus.
• Connect the positive terminal of the multimeter
lead to the motor terminal U, V, W in turn.
• The multimeter should show open diode.
15
FRCC.PC.036.A2.02