THORLABS SHB05, Руководство пользователя

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Ø1/2" Shutters and Controller Chapter 4: Setup and Operation
Page 10 TTN020243-D02
The maximum continuous operating frequency limit is 15 Hz. The unit can operate up
to 25 Hz for a limited amount of time. After the time limit is exceeded or the
modulation frequency exceeds 25 Hz, the shutter will disable, the Status LED will turn
red, and the interlock will open. See Chapter 5 for more information on how long the
unit can be run from 16 to 25 Hz.
4.3.1. Protected Mode
When the SHB05(T) operates in Protected Mode, the device will shut down if run for
too long over 15 Hz. This is in order to protect the device from overheating. The unit
does not monitor the temperature directly, but the time limit is based on calculations
assuming no heat control at room temperature. If the user utilizes some kind of heat
mitigation system, they may set the unit to Unprotected Mode where the time limit
alarm is ignored and the device will operate continuously. Note that operating the
shutter in Unprotected Mode may damage the unit.
The following table outlines the length of time the device can be operated safely
above 15 Hz.
Protected Mode Specifications Value
Max Operating Freq. Continuous 15 Hz
Burst Mode (Less than 1 minute) 16 – 25 Hz
4.3.2. Unprotected Mode
The SHB05(T) normally operates in Protected Mode. In this mode, the unit will disable
the blades, turn the Status LED red, and trip the interlock when the unit is run over 15
Hz and the time limit is reached (see Chapter 5 for more information). In Unprotected
Mode, the unit will not disable under those conditions.
To enter Unprotected Mode, hold both the POWER and ENABLE buttons until the
Status LED flashes amber four times. While in Unprotected Mode, the Status LED will
remain amber, so any condition that normally would be green will now be amber. To
exit Unprotected Mode, depress both buttons until the Status LED flashes green four
times. This will put the device back into Protected External Modulation Mode.
Pressing the ENABLE button while in Unprotected mode, will exit Unprotected Mode
and enter Manual Mode. The LED will turn green.
The table below summarizes the different states and how to enter them.
Current
Mode
To Manual Mode
To External
Protected Mode
To External
Unprotected Mode
Manual
-
Hold Enable button
for 3 seconds.
Hold Power and Enable
buttons for 3 seconds.
External
Protected
Press Enable button. -
Hold Power and Enable
buttons for 3 seconds.
External
Unprotected
Press Enable button.
Hold Power and Enable
buttons for 3 seconds.
-