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Revision 8.6
SECTION 6 : OPERATION OF CONTROL PANEL
92
6.8.13
Joystick error
A joystick error occurs if 2
nd
, 3
rd
or 4
th
speeds are requested and the first notch (direction selection) is
not present.
When the parameter “Sep. dir. Signals” is set as “True” this fault may also indicate that both directions
are requested simultaneously.
NOTE
This fault is indicated in the display (top left
hand side corner) as “J. error”, but it will not be
registered on the fault history.
6.8.14
RFB & CURRT LOSS
(Rotor Feedback and Current Loss)
In the event that both rotor feedback and current feedback are not measured by the THYROMAT unit
simultaneously during operation an external fault is the possible cause of the joint failure of both
signals.
This type of faulty condition has been split into 3 sub-categories, to facilitate fault finding.
The sub-categories are:
6.8.14 (a)
RFB & CURRT LOSS S:
This fault condition indicates that the combined rotor and current feedback loss occurred
during start-up, before the command to release the brakes was initiated.
6.8.14
(b) RFB & CURRT LOSS R
The fault condition indicates that the combined rotor and current feedback loss occurred
during running (brakes released).
The suffix “R” indicates that the first feedback loss detected by the system was the rotor
feedback then the current feedback loss was also detected.
6.8.14
(c) RFB & CURRT LOSS I
The fault condition indicates that the combined rotor and current feedback loss occurred
during running (brakes released).
The suffix “I” indicates that the first feedback loss detected by the system was the current
feedback, then the rotor feedback loss was also detected.
