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Revision 8.6
SECTION 5 : COMMISSIONING
71
Step 7
Powering up of the Thyromat drive:- After ensuring that there are no "earth faults" or "short circuits", the
motion’s main circuit breaker (c.b.) may be switched ON. The Thyromat drive will display a power up
page, which indicates the type of motion and the version group of its software program. In the event of
this page remaining on the display, with periodic reset followed by the same displaying of this page, an
Input supply phases has occurred, which does not allow the Thyromat unit to carry further testing prior to
the “Health Status” is given.
Possible causes of initial power-up Input phases failure:
Wrong phase rotation: Turn the power OFF then correct phase rotation before turning the power
ON once again
The Incoming 3-phase supply is below acceptable values, (i.e. < 75% of its rated supply voltage)
The Incoming 3-phase supply has a phase imbalance.
Step 8
Input the motor parameters as necessary. At this stage the only parameter which should be modified
are the parameters which refer to the motor size and those are the following:
C.T. ratio
Motor current
All other parameters should remain as per default values. Save the parameter changes before
continuing with the tests.
Note: If parameter settings are changed and saved while the crane is running (out of neutral with the
brake off), these changes only become active once the crane stops running (in neutral with the brake on).
Step 9
Perform Locked Rotor test (Open rotor circuit)
a)
Ensure that there is no load on the crane hook
b)
Turn main c.b. OFF
c)
Open star-point from rotor resistance or open two rotor resistance phases from rotor circuit
d)
Make sure that the brake contactor will not energize. This may be achieved by opening the
brake contactor coil circuit at any point in that control circuit.
(Remove wire from terminal 13 on Thyromat)
e)
Turn Main c.b. ON
f)
Wait for Thyromat drive Healthy Status to be displayed
