Samsung Ht As700 User Manual

61
Connection example with AC input device 
Contact output type
Non-contact output type
Cautions when using lead switch with LED 
Even when using input contact with embedded serial LED such as lead 
switch with LED, make sure to supply voltage higher than ON voltage 
to the PLC input terminal. Pay extra attention, in particular, when 
connecting multiple switches in serial. 
Input 
terminal
COM 
terminal AC input unit
Input 
terminal
COM 
terminal AC input unit
Lead switch with LED 
ON voltage error...

62
Cautions when using 2 wired type
Use a breeder resistor as below when the leakage current from 2 wired 
type photoelectric switch or proximity switch keeps flowing into the 
PLC.
DC 12-24V type input unit
(OFF voltage 2.5V, input impedance 3 
KΩ)
2 wired sensor
DC input unit
Since the OFF voltage of input is 2.5V, determine the R 
value to set the voltage between COM terminal and input 
terminal to be 2.5V or less.
Input impedance is 3 
KΩ
For the resistor, W can be calculated as follows: 
(Power...

63
Cautions when using limit switch with LED 
Use a breeder resistor as below when the leakage current from limit 
switch with LED keeps flowing into the PLC or LED is accidentally 
turned on. 
Limit switch with LED DC 12-24V type input unit
(OFF voltage 2.5V, input impedance 3 KΩ)
r: Internal resistance of limit switch (KΩ)
R: Breeder resistance (KΩ)
Since the OFF voltage of the input is 2.5V, set R to get the following 
current, 
when the power supply voltage is 24V. Once calculating I, follow the...

64
Output wiring
Checkpoints for output unit wiring 
NThere can be limits on the number of points that can be 
simultaneously turned on or load current, based on the unit type. 
Refer to the specification of each unit. Pay extra attention, in 
particular, when ambient temperature is high.
NConnect protection circuit to inductive load or capacity load, etc. as 
below. 
NThere can be current limitation per Common for output units, so 
make sure not to exceed the allowed range. 
Protection circuit for...

65
Cautions when using capacity load
Use protection circuit as below to minimize the effect of a load with 
high inrush current. 
Use an external fuse to protect against overload 
NUnits embedded with fuse can prevent damages in case of output 
shortage. 
NSince the unit with embedded fuse cannot protect all the 
components against overload, it is recommended that you use an 
external fuse for every point. 
NThe components of output unit may not be protected in case of 
shortage.
Cautions for leakage...

66
Terminal Block Type Module Wiring
Compressed terminal, M3.0
The terminal base for the NX70 PLC I/O modules (Terminal Type) uses 
M3.0 terminal screw. Use the following compressed terminals for 
terminal wiring. 
Open terminal  Circular terminal
Removable terminal block 
NTerminal block of this type of I/O unit can be separated from the unit 
with wires connected, by unfastening the screws on both ends.
NMake sure to refasten the screws after wiring. 
7. 0 m m
or less 7. 0 m m
or less 
Screws
Terminal...

67
Connector Type Module Wiring
Wiring
Wiring method 
Both NX700 32-point I/O module (NX-X32D, NX-Y32RV, NX-Y32T) and 
64-point I/O module (NX-X64D, NX-Y64T) use 40-pin MIL type 
connectors. To connect to external devices,
1. Insert each pin into socket
 
2. or, use harness with flat cables.
 (Available on the market) 
Connecting PIN type 
PIN type connection. Insert each PIN into a socket. Detail wirings are 
shown on the next page.
 Product name Catalog numberProduct specifications
I/O connector 
ASSY...

68
Connecting with harness (Using flat cable connector) 
40-pin flat cable connector is used, and 20 crimped terminals are 
connected at the end. Its total length is 1.5m. Direct connection to the 
unit.
 Product nameCatalog numberProduct specifications
Flat cable ASSYNX-CBLDCDC IN 32 points, 64 points
Connectors harness cable 1.5m
NX-CBLTRTR OUT 32 points, 64 points
Connectors harness cable 1.5m
NX-CBLRYRelay OUT 32 points
Connectors harness cable 1.5m
Applied products
32 pointsNX-X32D (DC IN 32...

69
Pressure welding socket for PIN type connection 
Direct pressure welding with clothings on saves wiring time and 
efforts.
Wiring 
1. Bend the contact part at a carrier, and set it into the pressure welding 
device. 
2. Insert both cables with case on until touching each other, and hold the 
pressure welder slightly.
3. Insert the cables into the housing once welding is done.
Contact removal pin for wiring failure.
In case of wiring failure or cable pressure welding failure, use the 
contact removal...

70
Wiring flat cable connector
Cautions when using flat cable connector 
When a flat cable connector is used for direct connection, the mapping 
between cable No. and I/O No. is as follows:
Connecting 32-point unit (NX-X32D, NX-Y32T, NX-Y32RV)
Mapping table between flat cable No. and I/O (32 points) 
NC: No Connection
2
391
40DC INNX-X32D
 Product 
nameCatalog 
numberSpecifications
Flat cable 
(1.5m)NX-CBLDCDC IN 32 points
(NX-X32D)
NX-CBLTRTR OUT 32 points
(NX-Y32T)
NX-CBLRYRelay OUT 32 points...