Mc 750 Operation - SCHOTT VisiLEDs MC Serie Conseils D'utilisation

6. MC 750 operation

Operation display
Light intensity setting
Thermo guard
Please note
42 | VisiLEDs MC Serie
When the controller is switched on the operation display (19) is lit green.
The MC 750 basic controller makes it possible to adjust the brightness of the
connected VisiLED illumination steplessly. To increase the brightness please
turn the knob (18) clockwise.
To increase reproducibility the adjustment area between the two end positions
at 0 % and 100 % light is additionally marked with 5 graduation marks.
If the brightness setting range marked in red is selected then the LED illumi-
nation is in overdrive mode. In this position it is to be expected that in
continuous operation the LEDs will heat up to the maximum temperature
permitted. A build-in thermo guard (see below) ensures that this maximum
temperature cannot be exceeded. So the VisiLED component can be used
without restrictions in overdrive mode!
To guarantee the longevity of the LED illumination unit the VisiLED controllers
are fitted with an integrated thermo guard. It continuously monitors the
temperature of the connected illumination unit.
If the LED illumination reaches a specified warning temperature the red LED
(8) on the MC 750 begins to blink.
The blinking frequency increases if the LED temperature approaches the maxi-
mum permitted temperature. Should the illumination unit heat up too much
then the thermo guard automatically switches off the illumination unit and the
red LED display (8) is permanently lit up.
When the light intensity is turned down slightly via knob (18) on the MC 750
or if the LED illumination cools down to below the warning temperature then
the LED illumination is automatically activated again.
To avoid the automatic switching off process please turn down the brightness
setting slightly if the blink frequency of the red LED (8) increases.
● The thermo guard measures the temperature close to the LEDs. The housing
of the LED illuminations heats up at a considerably lower rate (Please also
see "Information for operating the LED transmitted light brightfield stage"
in Section 3.)!
The maximum permitted temperature depends on the light intensity
●
setting.
● High ambient temperatures or unfavorable installation conditions for the
VisiLED illuminations can lead to the warning temperature already being
reached when the illumination unit is not yet in overdrive mode.