Manual

2
GV-IM-E
Mounting the sensor amplifier
 Mounting the GV-21/GV-21P (main unit)
1 Align the claw at the bottom of the
main body with the DIN rail. While
pushing the main body in the
direction of the arrow 1, slant it in the
direction of the arrow 2.
2 To dismount the sensor, raise the
main body in the direction of the
arrow 3 while pushing the main body
in the direction of the arrow 1.
When using the amplifier mounting bracket
(OP-76877) (sold separately), mount it as
shown in the diagram to the right.
 Mounting the GV-22/GV-22P (expansion unit)
Several expansion units can be used in connection with the main unit.
Up to three expansion units can be connected to one main unit.
Expansion units with different output types (such as a PNP output main
unit to an NPN output expansion unit) cannot be connected together.
1 Remove the expansion
protective cover from the
GV-21/GV-21P (main unit)
2 Install the amplifiers (expansion units) on the DIN rail.
For more information about mounting, see "Mounting the GV-21/GV-21P (main
unit)".
3 Push the expansion unit into
the main unit connector until
a clicking sound can be
heard.
4 Install the end units
(OP-26751: 2 units in a set)
(sold separately) on either
side of the amplifiers (main or
expansion units). Secure the
end units in place with screws
on top (2 on each end unit).
The end units are mounted in the same way as the amplifiers.
Amplifier wiring
The following information shows the I/O cable.
For more information about the I/O circuit, see page 9 of this Instruction Manual.
*1 GV-22/GV-22P (expansion unit) do not
have brown or blue lines. Power is supplied
to the expansion units through GV-21/GV-
21P (main unit).
*2 The external input switches as shown
below depending on the amplifier
OPTIONAL settings.
• oFF ......... Input off
• SFt .......... External shift
• bnK ......... Bank switching
• tim........... Timing input
Sensor head part names
Connecting the sensor head
1 Unlock the sensor head
connector and insert it into
back of the amplifier.
2 Turn the round part of the
connector clockwise until a
clicking sound is heard to lock
it.
When shortening the sensor head cable, follow the instructions given in
the "Sensor Head Connector Assembly Manual" included with the sensor
head.
Mounting the sensor head
Use the dedicated mounting bracket to mount the sensor head.
When not using the dedicated mounting bracket, the included insulating sheet must be
inserted between the mounting surface and the sensor head as shown in the diagram.
(When using the dedicated mounting bracket, the insulating sheet is not necessary.)
Mounting and Wiring the Sensor Amplifier
CAUTION
• When connecting multiple amplifiers (expansion units),
first check to make sure that the power is turned off to all
of the main and expansion units. Connecting the units
with the power turned on may cause damage to the units.
• Push the amplifiers (expansion units) as far as possible into
the main unit. If they are connected at a slant or not inserted
securely, the units may be damaged.
• Only GV Series amplifier can be connected (DL Series
cannot be connected). Connecting other amplifiers may
cause damage to the units.
(1)
(3)
(2)
Amplifier mounting bracket
Note
GV-21/
GV-21P
Expansion
protective
cover
Main
unit
Expansion
unit
Connector
End
unit
End
unit
Control output 1
Brown
*1
Blue
*1
Black
White
Pink
*2
Purple
Control output 2
External input
Laser emission
stop input
10-30 V DC
Connecting and Mounting the Sensor
Head
Laser receiver Mounting area
LASER
(Laser radiation
emission indicator)
OUT
(Control output
indicator)
Mounting area
1spot
(Spot reflection
indicator)
Laser
Connector
Connector
Unlocked
Locked
Note
z Mounting when detecting
targets close to a wall
z Mounting when detecting
targets in a hole
Receives little effect
from stray laser light.
Variations in the detection
value with effects from
stray laser light.
The target cannot be detected
when the transmitter or receiver
are blocked.
Sensor head
Insulating sheet
Hexagon socket bolt
(Accessory)
z When detecting uneven workpieces
• Stable detection
even on uneven
areas.
• Incorrect values
can be detected
on the uneven
areas.