Dimensions
24 (W) × 100 (H) × 71 (D)
Isolation method
Between the analog input and the
NX bus: Power = Transformer,
Signal = Digital isolator
Between analog inputs: Power =
Transformer, Signal = Digital isola-
tor
Between the trigger input and the
NX bus: Signal = Digital isolator
Between the analog input and the
trigger input: Power = Transform-
er, Signal = Digital isolator
Insulation resistance
20 MΩ min. between isolated cir-
cuits (at 100 VDC)
Dielectric strength
510 VAC between isolated circuits
for 1 minute at a leakage current
of 5 mA max.
I/O power supply
method
Supply from the NX Bus
Current capacity of
I/O power supply ter-
minals
IOV: 0.1 A max. per terminal
IOG: 0.1 A max. per terminal
NX Unit power con-
sumption
•
Connected to a CPU Unit
3.30 W max.
•
Connected to a Communica-
tions Coupler Unit
2.95 W max.
Current consumption
from I/O power sup-
ply
30 mA max.
Weight
140 g max.
Circuit Configuration
AMP
250 Ω
510 kΩ
510 kΩ
AG1 to 4
Iso
la
tio
n
ci
rcu
it
In
te
rn
a
l
ci
rcu
its
I/O power
I/O power
supply -
to 4+
Terminal
block
NX bus
connec-
tor (left)
SHT1+ to 4+
SHT1- to 4-
IOV1 to 4
IN1 to 4
IOG1 to 4
Input1- to 4-
Current
control circuit
Power
supply
I/O power
NX bus
connector
(right)
I/O power
supply -
The following channels are individually isolated.
•
, Input1-, SHT1+, SHT1-
•
, Input2-, SHT2+, SHT2-
•
, Input3-, SHT3+, SHT3-
•
, Input4-, SHT4+, SHT4-
Installation orienta-
tion and restrictions
Installation orientation:
•
Connected to a CPU Unit
Possible in upright installation.
•
Connected to a Communications Coupler Unit
Possible in upright installation.
Restrictions: No restrictions
Appendices
A - 6
NX-series Analog I/O Units User’s Manual for High-speed Analog Input Units (W592)
