|
| Application Example for Smatlab Photo
Isolator Inpu |
Digital Input
Many types of digital signals
like switch closures, relay contacts, and TTL laver compatible can be
read by digital I/O card directly. Some type of digital signals input
may require signal conditioning like reduce higher-level voltage to TTL
level. A variety of signal conditioning module is available to provide
isolation and device circuitry protection functions.
|
Switches
Switches are pretty straightforward to wire. For security reason switch
contacts are always drawn in the OFF position when in systems
initialize. In the case of rotary switches the wiper arm will always be
connected to the first contact, which will be the off position.
|
 |
Data Sheet - download file: 4N35.pdf
|
|
|
|
SENSOR To 8 Photo
Isolator Board
|
|
Application Example
Proximity switch
[
General Specifications ]
|
|
Operating Voltage
|
10 - 30 V DC
|
|
Hysteresis
|
Less than 10 %
|
|
Max. Switch Rate
|
1.5 KHz ( M12/M18 ) ; 2K Hz ( S17/S18 ) ;
500 Hz ( PB )
|
|
Power-On Reset Time
|
20 ms
|
|
Circuit Protection
|
(a) output short circuit & (b)
reverse polarity of supply voltage
|
|
Max. Load cirrent
|
100 mA
|
|
Sealing
|
Conforming to IP67
|
|
Cable Length
|
2 meter, oil retardent, grey color
|
|
Writing Diagram
|
Brown, black and blue as standard
|
|
Proximity switch
a. JP XA JP
XA ( Short 2,3 )
b. JP XB JP XB ( Short 1,2 )
| JP0B to JP7B are used to select isolated or non-isolated.
When JPXB-1, JPXB-2 is short, then the corresponds channel is in
isolator mode, When JPXB-2, JPXB-3 is short, the 1XL is short with
system Gnd. So the external signal is in non-isolated mode. JP0A to JP7A
are used to select power signal input or non-power signal input for
the correspond channel. JPXA-1 and JPXA-2 short is power signal input
mode. JPXA-2, JPXA-3 short is non-power input mode. |
c. JP17 ( Short 1 3 )
| JP17 is used to select internal or external power supply of
input channels. When JP17-1 is shorted, the PC bus +12V power is
selected. When JP17-2 is shorted, the PC bus +5V power is selected.
If we short JP17-3, then the external power supplier is selected. |
d. JP18 ( Short 1,2 )
JP18 is to select external or PC bus power supply. JP18-1,
JP18-2 short mean PC bus power, JP18-2, JP18-3 short mean external
power. Suppose you connect more than two 8 channel relay output /
isolator input boards, we suggest you use external power.
|
2. Sensors Line
a. Brown Connect to
+12V ( Vcc ) & I10H ( 8 Photo Isolator / 8 Relay Board)
b. Black Connect to I10L (8 Photo Isolator / 8 Relay Board )
c. Blue Connect to Ground ( Gnd )
3. Circuit
4. If the sensor is near the iron,
the sensor is on. And the LED11 will be light of 8 Photo Isolator / 8
Relay Board.
|
|
5.
Signal Input without Power
|
|
|
|
|
