Module Location In Chassis; Modular Chassis Considerations; Fixed Expansion Chassis Considerations; General Considerations - Allen-Bradley SLC 500 1746-NR4 User Manual

Module Location in Chassis

Fixed Controller Compatibility Table
5V dc
NR4
(Amps)
IA4 0.035
IA8 0.050
IA16 0.085
IM4 0.035
IM8 0.050
IM16 0.085
OA8 0.185
OA16 0.370
OAP12 0.370
IB8 0.050
IB16 0.085
IV8 0.050
IV16 0.085
IG16 0.140
IH16 0.085
OV8 0.135
OV16 0.270
OB8 0.135
OBP8 0.135
OG16 0.180
OW4 0.045
OW8 0.085
OW16 0.170
IO4 0.030
IO8 0.060
IO12 0.090
NI4 0.025
NI8 0.200
NIO4I 0.055
NIO4V 0.055
FIO4I 0.055
FIO4V 0.055
DCM 0.360
HS 0.300
OB16 0.280
OB16E 0.135
IN16 0.085
BASn 0.150
BAS 0.150
OB32 0.452
OV32 0.452
IV32 0.106
IB32 0.106
OX8 0.085
NO4I 0.055
NO4V 0.055
ITB16 0.085
ITV16 0.085
IC16 0.085
KE 0.150
KEn 0.150
OBP16 0.250
OVP16 0.250
NT4 0.060
NR4 0.050
HSTP1 0.200

Modular Chassis Considerations

Place your RTD module in any slot of an SLC 500 modular chassis (except
24V dc
slot 0) or a modular expansion chassis. Slot 0 is reserved for the modular
(Amps)
processor or adapter modules.
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Fixed Expansion Chassis Considerations

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Important: The 2–slot, SLC 500 fixed I/O expansion chassis (1746–A2)
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0.045
0.090
0.180
0.025
0.045
0.070
0.085
0.100
0.145
0.115
0.150
0.120
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General Considerations

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Most applications require installation in an industrial enclosure to reduce the
0.125
effects of electrical interference. RTD inputs are susceptible to electrical
0.040
noises due to the small amplitudes of their signal.
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- Group your modules to minimize adverse effects from radiated electrical
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noise and heat. Consider the following conditions when selecting a slot for
0.090
the RTD module. Position the module in a slot:
0.195
away from power lines, load lines and other sources of electrical noise
0.145
such as hard–contact switches, relays, and AC motor drives
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away from modules which generate significant radiated heat, such as the
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32–point I/O modules
0.040
0.145
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0.040
0.050
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Chapter 3
Installation and Wiring
supports only specific combinations of modules. If you are
using the RTD module in a 2–slot expansion chassis with
another SLC I/O or communication module, refer to the table at
the left to determine whether the combination can be supported.
In the table:
A dot indicates a valid combination.
No symbol indicates an invalid combination.
A triangle indicates an external power supply is required.
(Refer to the Analog I/O Module User Manual, 1746–6.4.)
When using the table, be aware that there are certain conditions
that affect the compatibility characteristics of the BASIC
module (BAS) and the DH–485/RS–232C module (KE).
When you use the BAS module or the KE module to supply
power to a 1747–AIC Link Coupler, the link coupler draws its
power through the module. The higher current drawn by the
AIC at 24V dc is calculated and recorded in the table for the
modules identified as BASn (BAS networked) or KEn (KE
networked). Make sure to refer to these modules if your
application uses the BAS or KE module in this way.
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