Danfoss FCD300 Service Manual page 20

Static Test, IGBT circuit
(Multimeter in check
diodes position)
Static Test, Brake IGBT
-- If availably --
(Multimeter in check
diodes position)
Release 01/2003
Revise 08/01/2003 by DD Service Manager, Steffen Sundbæk
Service Manual FCD 300
Connect the positive (+) meter lead to –UDC terminal (hole).
Connect the negative (-) meter lead to W (98), V (97) and U
(96) terminals in turn.
Each reading should show a diode drop.
*Reverse the meter leads
Connect the negative (-) meter lead to –UDC terminal (hole).
Connect the positive (+) meter lead to W (98), V (97) and U
(96) terminals in turn.
Each reading should show open.
Connect the positive (+) meter lead to +UDC terminal (82).
Connect the negative (-) meter lead to W (98), V (97) and U
(96) terminals in turn.
Each reading should show open.
*Reverse the meter leads
Connect the negative (-) meter lead to +UDC terminal (82).
Connect the positive (+) meter lead to W (98), V (97) and U
(96) terminals in turn.
Each reading should show a diode drop.
Connect the positive (+) meter lead to R- terminal (82).
Connect the negative (-) meter lead to R+ terminal (81).
The reading should show a diode drop.
*Reverse the meter leads
Connect the negative (-) meter lead to R- terminal (82).
Connect the positive (+) meter lead to R+ terminal (81).
The reading should show open.
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