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Chapter 6 4100ES SPS Field Wiring
SPS Auxiliary Power Wiring (continued)
Wiring The SPS can connect to auxiliary power appliances via the dedicated auxiliary power tap
(TB3). If more power is needed, any of the three NAC outputs can be used for auxiliary power.
Figure Notes:
1. Maximum allowed NAC current consumption (aux power plus NACs): 9A (Special Application) or 4A regulated 24V dc.
2. Maximum per NAC: 3 A
3. Maximum allowed auxiliary power current consumption: 5A (total supply).
4. Maximum per auxiliary output: 2 A
5. Class A wiring is possible only if a 4090-9117 Power Isolator is used.
6. International systems require ferrite beads. Use kit 4100-5129.
Figure 6-8. Auxiliary Power Wiring
B+
0V 24V
AUX POWER
B- A+ A- B+ B- A+A- B+ B- A+ A-
AUXILIARY
POWER
AUXILIARY
POWER
AUXILIARY
POWER
AUXILIARY
POWER
Devices
Primary Return
TB1 TB2
24V
0V
TB1 TB2
To SPS/
RPS
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
12 AWG to 18 AWG
Ferrite bead
Required for RF
immunity to CE
specified levels.
Use kit 4100-5129.
12 AWG to 18 AWG
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