2
So Clutch is used for this purpose. Normally clutch is engaged and the main
shaft rotation is mechanically linked to take up Roller. When weft tape breaks,
the Relay contacts of Relay PCB should be used to deactivate clutch to stop
take up immediately. The fabric will be crammed to avoid gap in fabric.
Magnetic Sensor Models: For detect the weft break.
Universal Type 12V DC Model AS-35 with Relay PCB:
This combination can fit on all types of Looms.
Please refer to the wiring schematic for connecting 12V DC sensor (AS-35)
to
Relay PCB. Now mount the Relay PCB in Loom Control Panel and
connect
24V AC to connectors marked as J3 for “24V AC”. Connect the
sensor to
Relay PCB marked as J2 for 12V DC Sensor and finally connect
the relay
contacts to stop the Loom with cramming. You may Use NO or
NC contact
depending on circuit requirement. The relay contacts are
marked as NC / COM
/ NO on J1 connector. Relay can also be connected as
24V DC PNP or NPN
type output to the Loom Controller / PLC. For
Electronic loom, cramming is
done by Loom Controller / PLC.
Electrical connection for 12V DC Model AS-35:
PLEASE CHECK THE COLOUR CODE.
Connect sensor directly to Relay PCB as follows. Connect Relay contacts to
STOP loom.
Direct 24V DC Model MSD10-24 : This is suitable for
Direct connection of sensor on specific looms : Relay PCB is avoided
when this model is used.
3
24V DC sensor MSD10 - 24 (PNP or NPN)
is directly connected to loom
controller or PLC Please refer to wiring schematic. The output gets activated
when Stop Signal is sent by sensor. The loom controller or PLC will STOP the
loom on receiving this signal from the sensor. For Electronic loom, cramming
is done by Loom Controller / PLC.
Electrical connection for 24V DC Model:
PLEASE CHECK THE COLOUR CODE.
MSD10-24 (PNP OR NPN): Provide 24V DC Supply to sensor as follows.
The Signal is directly connected to Loom Controller / PLC which will then
STOP the loom.
Note: Connect Supply wires and output in correct Polarity. Otherwise
sensor will not work. Consider change in color code.
Use Cable ties or thread to fix the cable on support rod. Do not leave the cable
loosely hanging on loom. Cable should not get stretched. Avoid sharp bending
of cable coming out of sensor. Provide sufficient bending curve. Please dress
up the cable properly to avoid any damage to cable.
Alignment / setting of Sensor and Reflectors
:
Rotate the loom and
bring one magnetic reflector assembly under the sensor. Rotate the reflector
assembly and bring the magnet to the position where it will be after weft
breakage (about 180 degree rotation). The LED on sensor should light up. Set
the vertical distance between center of sensor bottom point and magnet to
about 35 mm and at an horizontal offset of 10mm away from magnet. This is
important; otherwise magnetic field from the normal position may trigger the
sensor and a malfunction i.e. false tripping would occur.
Sensor
Model
Sensor connections as per
the colour code
Drawing
12V DC
Sensor
AS - 35
Connection - 0VDC
Signal
+12V DC
Refer to
Connection
Diagram of
AS - 35
Wire
Colour code
Blue
BU
Black
BK
Brown
BN
Sensor
Model
Sensor connections as per
the colour code
Drawing
24V DC
Sensor
MSD10-24
PNP OR
NPN
Connection - 0V DC Signal +24V DC
Refer to
Connection
Diagram of
MSD10-24
(PNP/ NPN)
Wire
Colour code
Blue
BU
Black
BK
Brown
BN
