KEYENCE SL-C Series - Manual (Page 46)

Chapter 4 Checklist
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English ENGLISH
❏
If 2 or more sets of SL-C units are used - a series connection or light interference prevention
connection is used to prevent light interference.
See “3-6 Connection for Light Interference Preven-
tion” ( ➮ page 3-5) and take measures to prevent light interference among each SL-C units.
3. Check Using an Operation Test with the Machine Stopped
With the machine stopped, turn on the power of the SL-C and carry out the following tests using the
test piece included in the package. If you are using any of models SL-C**L having the detection
capability of 45 mm diameter, prepare a test piece having a diameter of 45 mm at customer's side, and
implement the test. 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.
❏
The output status indicator (bar LED) on the SL-C turns red and stays red while the test piece is
present within the detection zone.
❏
When the power of the SL-C is turned on with no test piece in the detection zone, the output status
indicator as well as all eight bar LEDs turn green.
❏
The test piece can be detected regardless of its location as long as it is in the detection zone.
❏
If the SL-R11(E) restart interlock function is enabled, when the test piece is removed, confirm that
bar LEDs on the SL-C light up green, the output status indicator lights up red, and the SL-R11(E)
interlock indicator lights up yellow.
❏
When in the restart interlock state, the start/restart input causes the output status indicator to
change to green, and the SL-R11(E) interlock indicator to turn off.
❏
If the SL-R11(E) start interlock function is enabled, confirm that the bar LEDs light up green, the
output status indicator turns red, and the SL-R11(E) interlock indicator lights up yellow when the
power of the SL-C is turned on with no object in the detection zone.
❏
In addition, the output status indicator changes to green and the SL-R11(E) interlock indicator turns
off when there is a start/restart input while in the start interlock state.
Move the test piece for detection confirmation as illustrated in the figure below.
Star
t
Stop
4. Operation Test with the Machine Operating
This test confirms that the machine stops its operation.
❏
Place the test piece in the detection zone or protection zone of the SL-C. It is recommended to try
three locations: near the transmitter, near the receiver, and the central area of the detection zone.
The machine must stop by the detection of the test piece.
❏
The machine must remain stopped as long as the test piece is in the detection zone.
❏
The machine will not operate when the SL-C Series power supply has been interrupted.
❏
The overall response time of the machine, including the response time of the SL-C and the time it
takes for the machine to stop, must be shorter than the overall response time T used in the calcula-
tion of safety distances (
➮ See “2-2 Safety Distances” (page 2-5)).
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