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Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
LASER ENABLE
The laser enable input is provided for compliance with laser safety regulations.
The laser diode in the gauge may be energised only if the “LSR_EN” pin (pin 14) is connected
(via an external user-supplied switch contact) to any one of the “DGND” pins (pins 2, 15, 24).
The gauge requires a few minutes for the laser temperature to stabilise and for valid
measurement after “LSR_EN” is connected to “DGND”. For this reason, it is recommended
that the laser enable input is connected to a safety interlock that is active infrequently, such
as a maintenance lock-out key switch.
Safety interlocks that are frequently activated and require the gauge to immediately resume
measurement upon deactivation (such as a machine guard door) should be connected to the
shutter enable input (“SHUT_EN”) described in the next section.
Connector type: DB25 female (socket)