KEYENCE SL-CHG Series - Manual (Page 43)

Chapter 4 Checklist
4-1
4
ENGLISH
4 Checklist
4-1 Post-Installation Itemized Checklist
When the installation of the SL-CHG is complete, the responsible personnel shall verify the SL-CHG’s
operation in accordance with the checklist shown below. The checklist below covers the minimum items
required for using the SL-CHG. The check items required may vary depending on the machine installed for
the SL-CHG and the regulations for the country or region in which the SL-CHG will be used. KEYENCE
strongly recommends that other necessary check items should be added by the responsible personnel for
the use of the SL-CHG.
Note that the following list is made with the assumption that the Intelligent Safety Relay Unit (SL-R11G) is
used and that the start and restart interlock functions are enabled.
1. Installation Condition Check
❏
The machine to which the SL-CHG is mounted has a stop function that can be triggered by an
output signal from the SL-CHG.
❏
The SL-CHG is 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 means to reset interlock (a switch, etc.) is located at a position where it is possible to see the
entire hazardous zone and all hazards, and it is not possible to reset the interlock from within the
hazardous zone.
❏
The minimum safety distance has been calculated by observing the standards and regulations of
the country or region of use and the SL-CHG is installed at a distance greater than the minimum
safety distance from the hazardous zone or hazards.
❏
The SL-CHG is installed at a location free from interfering lights, such as external lights from
inverter-controlled fluorescent lamps and glossy surfaces.
❏
The transmitter and the receiver are of the same number of beam axis.
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. Wiring Check
❏
The power supply unit for the SL-CHG shall be a dedicated unit for the SL-CHG and no other
device can be supplied from the same power supply unit.
❏
The recommended unit SL-U2 or a DC24V power supply unit that satisfies the requirements stated
in this instruction manual has been employed as the power source for the SL-CHG. (
➮ See “3-2
Power Requirements” (page 3-1).)
❏
The transmitter and the receiver are correctly connected using the transmitter cable (gray) and the
receiver cable (black) respectively.
❏
For PNP output, the power supply 0V must be grounded, and the OSSD output is not short-
circuited to the +24V line.
❏
For NPN output, the power supply +24 V must be grounded, and the OSSD output is not short-
circuited to the 0V line.
❏
The special series connection cable (SL-S1 or SL-S3G) is used when connecting 2 or more sets of
SL-CHG units in series.
❏
The light interference prevention cable prescribed in this instruction manual is used correctly when
connecting 2 or more sets of SL-CHG units in parallel via interference prevention cable.
❏
There is no damage to the cable shields. Also, eliminate any possibility of cables breaking or short-
circuiting by getting caught in the machine or crushed.
❏
If 2 or more sets of SL-CHG units are used - a series connection or light interference prevention
connection is used to prevent light interference.
See “2-4-5 Light Interference Prevention Method”
( ➮ page 2-15) and take measures to prevent light interference among each SL-CHG units.