KEYENCE LV-N10 Series - Manual (Page 5)

5
Connecting Multiple Amplifiers
Up to 16 expansion units can be connected to one main unit. Note, however, that the 2 output
type is handled as two expansion units.
1
Remove the protection covers from the main unit
and expansion unit(s).
2
Install the amplifiers on the DIN rail, one at a time.
3
Slide the main unit and expansion unit(s) together.
Engage the two claws of the expansion unit with
the recesses on the main unit side until you hear/
feel a click.
4
Attach the end units (option: OP-26751) to the DIN
rail in the same way as step (2).
5
Secure the amplifiers between the end units.
Tighten the screws at the top (two screws per unit)
with a Phillips screwdriver to fix the end units.
Calibration Method

To Detect Small Differences

Two-point Calibration
Two-point calibration is the basic method of calibration.
Press the [SET] button once without the workpiece, and then press it once again with the
workpiece.
1
Press the [SET] button with no workpiece.
[
 ] will be displayed on the sub-menu (green display).
2
Press the [SET] button with a workpiece.
When complete, the values will be set and the submenu (green display) will flash. The set
point will be calibrated to the mid-point between the light intensity when there is no work-
piece, and the light intensity when there is a workpiece.
If "----" flashes for two seconds on the main screen, the light intensity is too small between
conditions when the workpiece is absent and when it is present. These values will be set,
but there is the possibility that detection may become unstable.
Other Calibration Methods

Increased Resistance to Dust and Dirt

Maximum Sensitivity Calibration
In the state shown below, press and hold the [SET] button for three seconds or more. Stop push-
ing when "
 " flashes. The sensitivity is set slightly higher than the received light intensity.

Calibrate with a Moving Workpiece

Full Auto Calibration
Press and hold the [SET] button with no workpiece in place. While "  " is flashing, pass a
workpiece through. (Continue pressing the [SET] button while the workpiece passes
through.)

Workpiece Positioning

Positioning Calibration
Press the [SET] button with no workpiece.
Place the workpiece in the location you wish to position it. Press and hold the [SET] button
for at least 3 seconds. Release the button when "
 " flashes.
Mount on DIN rail and install on metal surface when connecting to mul-
tiple amplifiers or mounting main units together.
• Contact your nearest KEYENCE office when connecting units other
than the N-bus (name of KEYENCE’s wire-saving system) compatible
sensor amplifier, including LV-N10 Series, or the NU Series commu-
nication module.
• Turn the power off before connecting multiple expansion units.
• Do not touch the expansion connector with your bare hands.
• When using the LV-N10 series as a main unit, verify that expansion
products used (other than LV-N10 series expansion units) can oper-
ate within the power voltage range of the LV-N10 series.
CAUTION
Point
1
2
OP-26751 (a set of two)
Thru-Beam Model / Retro-Reflective Model Reflective Model
Common to
and
Workpiece
Thru-Beam Model / Retro-Reflective Model : with workpiece : without workpiece Reflective Model
Thru-Beam Model / Retro-Reflective Model Reflective Model
Common to
and
Thru-Beam Model /Retro-Reflective Model
Common to
and Reflective Model
Workpiece