General considerations – Rockwell Automation 1746-NR4 SLC RTD/Resistance Input Module User Manual User Manual
Page 37
Publication 1746-UM008B-EN-P - December 2006
Install and Wire the Module 37
General Considerations
Most applications require installation in an industrial enclosure to
reduce the effects of electrical interference. RTD inputs are susceptible
to electrical noises due to the small amplitudes of their signal.
Group your modules to minimize adverse effects from radiated
electrical noise and heat. Consider the following conditions when
selecting a slot for the RTD module. Position the module in a slot:
• away from power lines, load lines and other sources of electrical
noise such as hard-contact switches, relays, and AC motor
drives.
• away from modules which generate significant radiated heat,
such as the 32-point I/O modules.
OX8
•
0.085
0.090
NO4I
Δ
(3)
0.055
0.195
NO4V
•
0.055
0.145
ITB16
•
0.085
-
ITV16
•
0.085
-
IC16
•
0.085
-
KE
•
0.150
0.40
KEn
•
0.150
0.145
OBP16
•
0.250
-
OVP16
•
0.250
-
NT4
•
0.060
0.040
NR4
•
0.050
0.050
HSTP1
•
0.200
-
(1)
A dot indicates a valid combination.
(2)
No symbol indicates an invalid combination.
(3)
A triangle indicates an external power supply is required.
Fixed Controller Compatibility Table
Modules
NR4
5V dc (Amps)
24V dc (Amps)