CD Automation Revo M 2PH, Руководство пользователя

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CD Automation srl REVO M User’s Manual
CD-Eng-REVO-M-2PH-30-40A-Thyristors-Units
44
21 Maintenance
In order to have a corrected cooling, the user must clean the heat-sink and the protective grill of the
fans. The frequency of this servicing depends on environmental pollution.
Also check periodically if the screw for the power cables and safety earth are tightened correctly
(See Connection Diagram)
21.1 Trouble Shooting
Small problems sometimes can be solved locally with the help of the below tab of trouble shooting.
If you don’t succeed, contact us or your nearest distributor.
Symptom
Indication on
front unit
Possible reasons of the
symptom
Actions
Load current
doesn’t flow
Green LED (ON)
light OFF
 No Auxiliary Voltage
 No input signal
 Reversed polarities of input
signal
 Give auxiliary voltage supply
(See
Connection Diagram
)
 Provide to give input signal
 Reverse the input signal polarity
Green LED (ON)
light ON
 Fuse failure
 Load connection interruption
 Load failure: The yellow led (HB)
is light on (with HB option)
 Thyristor fault: The red led (SC)
is light on (with HB option)
 Change the fuse
 Check the wiring
 Check the load
 Change the thyristor module
Load current flow
also without input
signal
Red LED (SC)
light on
 Wrong wiring
 SCR short circuit
 Check the wiring
 Change the thyristor module
Current flows at
nominal value but
Yellow LED
(HB/SC) is light
on
Yellow LED (HB)
light on
or
Red LED (SC)
light on
 HB circuit not tuned
 Current transformers not
properly wired
 Make HB calibration procedure
 Check current transformers
wiring
Thyristor unit
doesn’t work
properly
 Auxiliary voltage supply out of
limits
 Wrong input signal selection.
 Wrong input signal calibration
(out of range)
 Verify the auxiliary voltage
supply
 Control input signal setting.
 Check input setting
21.2 Warranty condition
CD Automation gives a 12 months warranty to its products.
The warranty is limited to repairing and parts substitution in our factory and does
exclude products not properly used and fuses.
Warranty does not include products with serial numbers deleted. The faulty product
should be shipped to CD Automation at customer’s cost and our Service will evaluate
if product is under warranty terms.
Substituted parts remain of CD Automation property.