© 2016 SPI Lasers UK Ltd.
Commercial in Confidence
SM-S00500 Revision A 21 October 2016
redPOWER QUBE Cased Fiber Laser User Manual
detects a fault. A reset is performed either by pressing and releasing the reset button on the
front panel or by closing and then opening the reset circuit on PL91. After a successful reset,
the reset button will light up blue.
Typical connections to PL91 are shown in Figure 22.
Figure 22 Typical Connections to PL91
If the external interlock is not used, PL91 pin 3 should be linked to pin 4 and pin 5 should be
linked to pin 6.
PL91 is a 6 way 5.08mm pitch connector. A suitable mating socket is Phoenix Contact part
number 1778027. It accepts wire sizes from 0.25mm
2
to 2.5mm
2
or 24AWG to 12AWG, the
strip length is 7mm or 0.25" and the tightening torque is 0.5-0.6Nm.
7.6.8 PL96 – Cooler Interlock
PL96 provides a general purpose, single channel interlock, which may be used to prevent the
laser operating if the external cooling water supply is off or above the maximum temperature.
PL96 also provides a 24V DC supply which is SELV and must be appropriately separated
from non-SELV circuits. External controls or interlocks must be “volt free“. The current is
nominally 5mA.The interlock is not a high integrity safety function and should not be used to
protect Users from laser emission.
Figure 23 shows a typical connection.
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