SPI Lasers redPOWER QUBE - Figure 24 Timing Diagram

© 2016 SPI Lasers UK Ltd.
Commercial in Confidence
SM-S00500 Revision A 21 October 2016
redPOWER QUBE Cased Fiber Laser User Manual
58
 Wait for PSU safe, about 500ms
 Open process cabinet doors
This is shown in the timing diagram Figure 21.
Figure 21 Timing diagram
7.6.7 PL91 – External Interlock and Remote Reset
The QUBE Fiber Laser has a high integrity emergency stop safety function. It is a dual
channel circuit, requiring two volt-free contacts, that conforms to EN ISO 13849-1:2015,
category 4, performance level e (PL e). It provides the Remote Interlock required for
compliance to EN 60825-1:2007.
PL91 provides access to this circuit and provides a 24V DC supply. The 24V supply is SELV
and must be appropriately separated from non-SELV circuits. External controls or interlocks
must be “volt free“ and dual channel. The safety function monitors both channels. If one
channel opens and closes again without the other opening, the safety circuit will detect this as
a fault. The fault can be reset by opening and closing the other channel.
The QUBE Fiber Laser also has a manual reset safety function to prevent unexpected start
up. The reset must be operated after applying the electrical supply and after operation of the
emergency stop, key switch or external interlock. A reset is also required if the E-Shutter