FineTek SC28P/N User manual

SC28P/N Mini Tuning Fork Level Switch
Operation Manual
WIRING
PNP Output:
Low(Min.)Mode: number 1 pin(Brown) is connected to
N-. No.2 pin(Black) is connected to L+.
NPN Output:
Power supply is DC. Output is PNP / NPN.
Please see Figure 1.
►DIN & Cable Wiring
High(Max.) Mode: No. 1 pin(Brown) is connected to N-.
No.3 pin(Blue) is connected to L+. Output is connected
to No. 2 pin(Black), then connected to N-. No. 4
pin(Yellow Green) goes to ground.
Output is connected to No. 3 pin(Blue), then connected
to N-. No. 4 pin(Yellow Green) goes to ground.
High(Max.) Mode: No. 1 pin(Brown) is connected to L+.
No.3 pin(Blue) is connected to N-. Output is connected
to No. 2 pin(Black), then connected to L+. No. 4
pin(Yellow Green) goes to ground.
Low(Min.)Mode: No. 1 pin(Brown) is connected to N-.
No.3 pin (Blue) is connected to L+. Output is connected
to No.2 pin (Black), then connected to L+. No. 4
pin(Yellow Green) goes to ground.
PNP Output
High(Max.) Mode: No. 1 pin(Brown) is connected to L+.
No.3 pin(Blue) is connected to N-. Output is connected
to No. 2 pin White(Green), then connected to N-.
Low(Min.) Mode: number 1 pin(Brown) is connected to
L+. No.3 pin(Blue) is connected to N-. Output is
connected to No. 4 pin(Black), then connected to N–.
NPN Output
►M12 x 4Pin Wiring:
High(Max.) Mode: No. 1 pin(Brown) is connected to L+.
No.3 pin(Blue) is connected to N-. Output is connected
to No. 2 pin White(Green), then connected to L+.
Low(Min.) Mode: No. 1 pin(Brown) is connected to L+.
No.3 pin(Blue) is connectsed to N-. Output is connected
to No. 4 pin(Black), then connected to L+.
SC28P/N fork sensing spot is shown as Figure 2 below. Considering
3
testing medium is water(S.G.=1 g/cm ), sensing spot is at the fillister about
3
12mm from the tip. If testing medium has S.G. lower than 1g/cm , sensing
spot would be above the fillister. In contrast, sensing spot will be below
the fillister.
After the switch is installed and powered, magnetic test function
can be performed accordingly please see Figure 3. The testing
point is marked on the housing label. User holds the magnet
and moves it close to testing point, the output status will switch
from NO. to NC. or NC to NO. and red LED would switch ON
or OFF while fork continues to vibrate.
When magnet is pulled away from the testing point, the output
status and red LED would return as default while fork continues
to vibrate. The purpose of testing is to confirm the wiring and
functioning are correct.
OUTPUT STATUS
MAGNETIC TEST
Sensing
spot
3
S.G.<1g/cm
Sensing spot
moves upward
3
S.G.>1g/cm
Sensing spot
moves downward
Figure 2 Fork Sensing Spot
12mm
8mm
3
S.G.<1g/cm
Sensing spot
moves upward
3
S.G.>1g/cm
Sensing spot
moves downward
Sensing spot
Figure 3 Magnetic Test Diagram
Magnet
DIN Cable Wiring Diagram
M12x4Pin Wiring Diagram
Black
Yellow
Green
PNP
Min.
1 2
3
L+
N-
PE
Load
1 2
3
L+
N-
PE
Max.
Load
Black
Yellow
Green
Brown
Blue
Brown
Blue
Min.
Max.
Load
M12-4Pin
L+ N-
Load
M12-4Pin
L+ N-
Black
Blue
Brown
White(Green)
Black
Blue
Brown
White(Green)
Max. Min.
Load
M12-4Pin
L+ N-
Load
M12-4Pin
L+ N-
Black
Blue
Brown
White(Green)
Black
Blue
Brown
White(Green)
PNP
NPN
Fuse
0.5A
Fuse
0.5A
NPN
Max.
1 2
3
Load
PE L+ N- L+ PE
1 2
3
Min.
Load
N-
Black
Yellow
Green
Brown
Blue
Black
Yellow
Green
Brown
Blue
Fuse
0.5A
Fuse
0.5A
Fuse
0.5A
Fuse
0.5A
Fuse
0.5A
Fuse
0.5A
M12 Connector
PIN Connection wire color
1Power supply + Brown
2OUT2 White(Green)
3Power supply - Blue
4OUT1/
communication interface Black

OUTPUT STATUS
High(Max.) Mode: Tuning fork switch will be actuated 3 seconds after the power is on.
Relay is NC and red LED indication is on. When tuning fork is covered by testing medium,
vibration stops and relay becomes NO Red LED indication is off.
SC28P/N When powered with 12~55 Vdc, top of housing would light up with green LED.
Low(Min.) Mode: Tuning fork switch will be actuated 3 seconds after the power is on.
Relay is NO and red LED indication is off. When tuning fork is covered by testing medium,
vibration stops and relay becomes NC. Red LED indication is on.
Flashing red indicates abnormal: Possible causes overloads or short-circuit load back,
equipment malfunction or wear tuning fork probe.
Flashing red indicates abnormal: Possible causes overloads or short-circuit load back,
equipment malfunction or wear tuning fork probe.
High(Max.) Mode: Tuning fork switch will be actuated 3 seconds after the power is on.
Relay is NC and red LED indication is off. When tuning fork is covered by testing medium,
vibration stops and relay becomes NO. Red LED indication is on.
DIN & Cable type
M12 x 4Pin type
Low(Min.) Mode: Tuning fork switch will be actuated 3 seconds after the power is on.
Relay is NO and red LED indication is on. When tuning fork is covered by testing medium,
vibration stops and relay becomes NC. Red LED indication is off.
It represents Blinking
Figure 4 Min./ Max. Mode
Min. Mode Max.Mode
Level
PNP/NPN
Output 1 3 1 3 1 2 1 2
Switch open
Red
LED
(DIN& Cable)
Switch closed Switch open Switch closed
Instrument
faliure
Switch open
Red
LED
(M12x 4Pin)
08-SCX-2A0012-B5-EM,10/18/2023
Tel: [phone] Fax: [phone]
Email: [e-mail] http://www.fine-tek.com
No.16, Tzuchiang St., Tucheng Industrial Park, New Taipei City 23678, Taiwan.
F i n e T e k C o . , L t d .
SIMPLE TROUBLESHOOTING
Error Cause Solution
Power Supply indicator
(Green Light) is off and the
switch is not conductive.
The signal lamp is normal
and the switch output is
incorrect.
Output Indicator (Red Light)
is flashing.
The tuning fork does not
sense the material, but the
switch indicates it exists.
The tuning fork sensed the
material, but the switch
indicates it does not exist.
No power supply.
Power doesn't meet the
specification.
Power on or check the wiring and repair.
Check the nameplate and
power 12~55 Vdc
Check the wiring diagram and correct it.
The control circuit wiring is
incorrect.
The wiring for high/low level is
incorrect. Check the wiring and repair.
The tuning fork is worn,
deformed or demaged. Contact with the local sales representative.
Liquid density sensed < 0.7g/cm³ ,
the selected model is not applicable
to use
Contact with the local sales representative.
The tuning fork is stuck or
agglomerated by the material.
Check the tuning fork and remove the
sediment.
Horizontal Installation:
INSTALLATION
1. Do not install near substance inlet.
Position hole
Inlet
Position hole
Position hole
2. When installing the product DIN connector
wiring down direction, the position hole
plug must be upward direction.
If not, incorrect installation could be
damage the product.
Vertical Installation:
1. Opening of the two fork blades is to be as
the flow direction.
2. Do not install near substance inlet.