6-16
The SPS can connect to auxiliary power appliances via the dedicated auxiliary power tap
(TB3). If more power is needed, any of the unused NAC outputs can be used for auxiliary
power.
B+
0V 24V
AUX POWER
B- A+ A- B+B- A+ A- B+ B- A+ A-
AUXILIARY
POWER
AUXILIARY
POWER
AUXILIARY
POWER
AUXILIARY
POWER
Figure 6-8. Auxiliary Power Wiring
SPS Auxiliary Power Wiring, Continued{xe "auxiliary power: isolators
and"}{xe "IDNet power isolator"}{xe "isolators"}{xe "power isolators"}
Wiring
Maximum per NAC: 3 A
Maximum per Auxiliary Power output: 2 A
Class A wiring is possible only if 4090-9117 Power Isolators are used.
EMC compliant systems require ferrite beads. See Appendix K for ordering
part codes.
Devices
Primary Return
TB1 TB2
24V
0V
TB1 TB2
To SPS
Class A aux power wiring requires the use
of 4090-9117 IDNet Power Isolators, as
shown above.
4090-9117
ISOLATOR
4090-9117
ISOLATOR
SPS
TB2
TB3
Dedicated auxiliary
power screw terminal
(configured in the
Programmer)
NAC points must be
reconfigured as
auxiliary power
output points in the
programmer
0.75 mm
to 4 mm
0.75 mm
2
to 4 mm
2
Ferrite bead
required for EMC
compliance. Use
SX0005 or kit
4100-5129.
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