Page 33 of 126
Proton Products SL mini and SLR mini Series Speed and Length Gauges Instruction Manual - issue 1s
SHUTTER CONTROL SWITCH, SHUTTER ENABLE INPUT AND SHUTTER STATE
OUTPUT
The shutter control switch (located on the front of the gauge), the shutter enable input (SHUT_EN)
and shutter status output (SHUT_ST) are provided for compliance with laser safety regulations.
The SHUT_EN input and the shutter control switch operate in conjunction as follows:
The shutter control switch and SHUT_EN input blocks laser beam emission without switching
off the laser diode, thus no warm up time is required when the shutter is opened and the
gauge may be used immediately for measurements.
The SHUT_EN input is intended for connection to a safety interlock switch that may be
frequently opened, such as on a machine guard or laser safety shield.
The SHUT_ST output is electrically independent of the SHUT_EN input; the SHUT_ST signal
is taken directly from an optical sensor in the path of the shutter, thus it indicates the shutter
state even in the event of shutter actuator failure.
SHUT_EN input electrical specifications
Connector type: DB25 female (socket)
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