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Troubleshooting manual
AT.654254.050 ver.1.0
No supply voltage on the surface unit
VSD is ready
A voltage of 480/380 is applied to the VSD
Check that the VSD is grounded; apply voltage to the VSD input terminals.
Not
CB1, CB2, CB3, CB9, CB 10 circuit
breakers are ON
Turn CB9,CB10 to ON position.
The transformer is connected correctly on the
TB5 terminal
Connect the CPT1 transformer according to the voltage applied to the VSD.
Not
Not
Transformer CPT1
produces 230 V + 15% -15%
Open the VSD using the supplied key. Using a tester, measure the voltage at
the external connection terminal. On terminal TB4 between terminals 6 and 7
there must be a voltage around 230 V. If it is absent, it is necessary to replace
the transformer CPT1. After replacing it, carry out the switch on according to
the early conditions.
Not
