OWNERS MANUAL | Cobolt Skyra™ |
D0423-E JANUARY 2018
27 | 45
Remote Interlock Connector
The laser is equipped with a remote interlock connector that prevents current flow through the diode when the circuit
is open. After the remote interlock connector has been opened the laser will need to be reset by disconnecting from
and then reconnecting to the power supply in order to start again, or toggling the key switch. Alternatively, it can be
re-started using the ‘clear fault’ and ‘laser on’ commands, see Section 10.3 for further details. The signal level is
between 0V and +5V with a pull up resistor, and the current required to ground the remote interlock connector is 5
mA. The time delay in the hardware is <1ms, but after filtering by the firmware the reaction time is extended to <
20ms.
The remote interlock connector is a 3.5 mm female stereo (TRS) audio socket on the key control box. The ring and
sleeve (see figure) must be connected for the laser to operate. To use the remote interlock connector with an external
switch, connect a stereo plug instead.
Direct On/Off control
The Direct On/Off control feature enables turning the laser On/Off using a 5 VDC signal. After having configured the
laser for Direct Input operation (factory set or by executing @cobasdr 1), the laser can only start-up when 5 VDC (max
12.5 VDC) is applied to pin 3 on the Molex connector with 0 VDC on pin 2 as reference. Shifting the signal to
0
VDC on
pin 3 will turn the laser off and put the laser in stand-by mode. This input only controls the on/off state of the laser and
cannot be used to modulate the power output. The remote interlock connection between pin 1 and 2 must also be
made as described above.
Molex connector on back side of laser head.
NOTE Direct control is not available for CDRH compliant models and cannot be used with key control box.
NOTE This input only controls the ON/OFF state of the device and cannot be used to modulate the output
power of the laser. See section 9 : Modulation mode operation.
Remote interlock
connector
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