NKT Photonics Koheras ACOUSTIK, Руководство по эксплуатации продукта

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Connecting the safety interlock
Connecting an
interlock door
switch
To connect a safety door switch to the LEMO interlock connector of the system,
follow the steps in
Procedure 1 .
Procedure 1 Connecting the door interlock circuit
LEMO connector
(door switch circuit)
LEMO Plug
The laser is shipped with a pre-wired LEMO interlock plug. If you need a new
LEMO plug assembly contact NKT Photonics, see
“Support contact details” on
page 84 . The plug should be used to connect the door interlock circuit as
described in Procedure 1 .
Figure 14 Pre-wired LEMO connector
Bus defeater
A bus defeater must be connected to the External bus output port of the last
device in an External bus chain topology. For example, in
Figure 12 , the bus
defeater is placed on the bus output connector of a connected accessory, the
last device connected to the External bus chain.
The External bus pins include an extension of the interlock circuit. The defeater
plug loops the circuit at the last device connected to the External bus chain.
When no accessory is employed, the defeater is placed on the ACOUSTIK
system external bus connector.
If no defeater is used, the interlock circuit is left in the open state and disables
the modules inserted in the system in the same manner as a connected door
switch circuit in the open state. A defeater is included with the ACOUSTIK
system, it is a standard male sub-d 15 pin connector with the necessary pins
looped back – see
Table 12 on page 85 .
Action
1 Install a switch that opens when the door accessing the ACOUSTIK installation enclosure
is opened. The switch must comply with safety regulations.
2 Using a cable with a maximum wire length of five meters and at a minimum 26 AWG,
connect the switch to a LEMO connector. For cable lengths longer than five meters, it is
recommended to use shielded cable.
3 Perform a continuity test using a multimeter:
a. First connect the multimeter leads to the interlock plug terminals.
b. Confirm when the enclosure door is closed, the meter shows the circuit as
closed.
c. Confirm when the enclosure door opens, the meter shows the circuit as open.
4 Insert the LEMO connector into the LEMO interlock connector on the rear panel of the
system.