Omron Sysmac NX Series User Manual page 245

Terminal connection
diagram
24 VDC
•
Input disconnection
•
*5
detection
*1. This is the minimum value. The Units perform conversion in the sampling period determined based on the Number of
Samplings Setting. The sampling period must be set to this value or longer.
*2. The following Unit cannot be connected next to the Unit.
•
Relay Output Unit (NX-OC££££)
*3. Besides the Additional I/O Power Supply Unit, there are Units that can supply I/O power to the NX bus. For example,
you can use a Connected Communications Coupler Unit. If you use this Unit to supply I/O power to the High-speed
Analog Input Units, the Additional I/O Power Supply Unit is unnecessary. The Additional I/O Power Supply Unit is also
unnecessary if you do not use the trigger inputs of the High-speed Analog Input Units.
*4. Short-circuit cables are not included in the product. The cable length must be 4 cm or less and allow for wiring to the
screwless clamping terminal block. Be sure to use cables and ferrules that are applicable to the screwless clamping
terminal block.
If the cable is too long, the analog input values may not be accurate.
*5. To use this function, set the Disconnection Detection Enable/Disable to Enable.
NX-series Analog I/O Units User's Manual for High-speed Analog Input Units (W592)
Additional I/O Power
Supply Unit *3
A1 B1
IOV IOV
IOG IOG
IOV IOV
IOG IOG
A8 B8
When the input range is 1 to 5 V or 4 to 20 mA: Supported
Other input range: Not supported
High-speed Analog Input Unit
NX-HAD401
A1 B1 C1 D1
IN1 NC SHT1+ Input1+
IOV1 IOG1 SHT1- Input1-
IN2 NC SHT2+ Input2+
IOV2 IOG2 SHT2- Input2-
IN3 NC SHT3+ Input3+
IOV3 IOG3 SHT3- Input3-
IN4 NC SHT4+ Input4+
IOV4 IOG4 SHT4- Input4-
A8 B8 C8 D8
Appendices
Use a two-conductor
shielded twisted-pair
cable. Do not ground
the shield.
Output device
Input+
Input-
To use current input,
connect SHT□+ and
SHT□- with a
short-circuit cable. *4
Two-wire sensor
Three-wire sensor
A - 7
A