KEYENCE SL-CHG Series - Manual (Page 45)

Chapter 4 Checklist
4-3
4
ENGLISH
5. Test Results Confirmation
❏
If the SL-CHG or the machine to which the SL-CHG has been installed fails any part of the above
test, operation should be ceased until satisfactory test results are obtained.
❏
A record of the test results must be maintained.
WARNING
If the SL-CHG does not function as described in the test procedure, do not attempt
to operate the machine to which the SL-CHG has been installed. Such an operation
may lead to serious harm, including serious injury or death of the machine opera-
tor.
4-2 Maintenance
4-2-1 Inspection Prior to Daily Operation
Use the following checklist to confirm the function of the SL-CHG and the machine before starting a
day's operation.
The checklist below covers the minimum test items required before using the SL-CHG each day. It is
strongly recommended to add the necessary checking items to this checklist based on the judgment of
the responsible personnel since additional criteria may be necessary depending on the machine to
which the SL-CHG is installed and the standards and regulations of the country or region in which it is
used.
In addition, note that it is a duty of the responsible personnel to train the machine operators regarding
maintenance of the machine and the SL-CHG.
The result of this inspection must be kept on record along with the machine log.
Note that the following list is made with the assumption that the Intelligent Safety Relay Unit (SL-
R11G) is used and the start and restart interlock functions are in effect.
1. Installation Conditions Check
❏
The SL-CHG has been installed in such a way that no machine operator can access the hazardous
zone or hazards within the machine without passing through the detection zone of the SL-CHG.
❏
The minimum safety distance has been calculated by observing the standards and regulations of
the country or region of use, and the SL-CHG has been installed at a distance greater than the
minimum safety distance from the hazardous zone or hazards.
❏
The SL-CHG has been installed at a location free from interfering lights, such as external lights
from inverter-controlled fluorescent lamps and glossy surfaces.
❏
There is no damage on cable shields. Also, there is no possibility that cables may be broken or
short-circuited by getting caught in the machine or crushed.
Also confirm the following if the Intelligent Extension Unit (SL-R12EX) is being used.
❏
If the floating blanking function is used - the minimum safety distance has been determined based
on the altered detection capability and applied in the SL-CHG installation.
❏
If the fixed blanking function is used - additional safety protective equipment has been installed to
protect the entire detection zone for which the blanking function has been enabled.
❏
If the Blanking Blind Protection Unit (SL-C08SB/SL-C16SB) is used - it has been confirmed that the
test piece is detectable in all detection zones including the detection zone in which detection by the
Blanking Blind Protection Unit is possible.
2. Check Using an Operation Test with the Machine Stopped
With the machine stopped, turn on the power of the SL-CHG and carry out the following tests using the
test piece included in the package. If the floating blanking function is active, do not use the attached
test piece, but use a proper test piece that conforms to the description given in the SL-R12EX manual.
❏
When the power of the SL-CHG is turned on with no test piece in the detection zone, the output
status indicator as well as bar LEDs turn green.
❏
Confirm that the status indicator (bar LED) on the SL-CHG turns red and maintains red state while
the test piece is present within the detection zone.