Construction Of Interlock System - Panasonic LP-RV Series Safety Manual

Construction of Interlock System

For operating this product, construct the protective enclosure enclosing the range of the laser radiation for protecting the
exposure caused by the reflection of the laser radiation from the laser marking object or the surrounding objects, and also
construct the interlock system. The following figure shows the construction sample of the system.
w
No. Devices
Laser marker head unit
q
Laser marker oscillator unit
Laser marker controller unit
w
PC for laser marker setting / monitoring
e
Protective enclosure
r
Laser protection shutter for marking
t
object gateway
Emergency stop button
y
Safety switch
u
Door for the maintenance
i
Safety relay unit or safety PLC etc.
o
Laser emission warning light
1)
Dust exhauster
1!
• INTERLOCK terminals (X16, X17 and X18, X19) are connected to the operating coil of the internal contactor in the
controller.
Connect INTERLOCK (+) and INTERLOCK (-) in the I/O terminal with the non-voltage contact (dry contact) such as a
relay or a switch. Do not connect with the voltage contact such as a transistor.
• When making a system compatible to ISO 11553-1 / ISO 13849-1, construct the redundant interlock system by using
both INTERLOCK 1 (X16, X17) and INTERLOCK 2 (X18, X19) connected to safety PLC or safety relay unit to shut off the
laser power supply in accordance with the standards.
r
o
i
u
y
e
Note for installation / controlling
-
-
-
-
Construct a control system which will separate (cut off) the laser beam
or shut off the laser power when it is opened.
Construct a control system for shutting off the laser power source when
it is opened.
Connect both INTERLOCK 1 (X16, X17) and INTERLOCK 2 (X18,
X19) of the laser marker to the devices
terminal of the safety relay unit or the safety PLC.
Besides INTERLOCK terminals, it can also be connected to other I/O signals
such as LASER STOP terminals with the devices
on the control specifications.
To indicate the laser marker status, connect the output signals such
as ALARM OUT (Y15), LASER SUPPLY OUT (Y20) or LASING OUT
(No.40) to the light.
Place the intake vent of the exhauster as close as possible to the
marking position of the object.
MJEC-LPRV-SAFETY-4
q
1)
t
to
t i
1!
using the relay output
to depending
t i
31