15
7. LED INDICATOR
LED indicator
8. "DRILLING ASSISTANCE" FUNCTION
The drill features a circuit board that constantly monitors the operating
voltage, motor and battery current. This enables optimisation of the
electric motor's capability and consequently enables best possible
battery life, guaranteeing security and reliability.
An LED indicator is placed in an easily visible position on the motor
and has the dual function of:
Providing "Drilling Assistance" to the operator (Ref. to § 8).
Indicating any errors or operational anomalies of the machine
(Ref. to § 13).
The “drilling assistance” function has been developed and optimised for use with
Cembre
CY range Broach
Cutters (diameter from19 to 32 mm, ref. to § 3.10), on 800 and 900 quality steel rails (UIC 860.0).
The multiplicity of variables (hardness of the rail, typology and sharpness of the cutting tool in use) does
not permit all possible application criteria to be covered.
The “drilling assistance” function is not optimised for cutting tools of other manufacturers.
By responding to the changes in colour of the LED indicators (Ref. to TABLE 1), the operator is able to apply optimum
force on the spindle lever so as to obtain the maximum possible output, required to achieve predictable drilling
times by standard methods.
TABLE 1
("Drilling Assistance" with
Cembre
CY range Broach Cutters, diameter from19 to 32 mm)
LED colour
Force applied to the spindle advance lever
Action
WHITE
INSUFFICIENT
Spindle progress too slow
Increase force so as to turn on the
GREEN LED
GREEN
OK
OPTIMUM *
Correct spindle progress
Maintain this progress for the
entire drilling process
RED
EXCESSIVE
Spindle progress too fast
Reduce force so as to turn on the
GREEN LED
* Normally, using twist drill bits up to Ø 13 mm (Ref. to
§ 3.11
) does not require a force that illuminates the
green LED. In such a case, it is however acceptable for the WHITE LED to remain illuminated.