Installation Power-Limited Wiring Requirements
26 HPFF12 NAC Expander — P/N 53576:B3 10/1/2018
2.5.1 Power-Limited Wiring, Standard Chassis
TB3
TB4TB1
TB2
LEDs
REF+ REF– + IN – IN
+ OUT
– IN
+ OUT+ OUT
+ IN
– OUT
SIGNAL 1
SIGNAL 2
BATT+ BATT–
A+
N/O
N/C
COMM
N/O
N/C
COMM
AC FAIL
TROUBLE
1L1 1L2 2L1 2L2 3L1 3L2 4L1 4L2A–
Input Circuits
Power-limited
Specific Application:
Power & SLC are
power-limited
Output Circuits
Power-limited
AC Circuits
Nonpower-limited
Relay Contacts
Nonpower-limited
H
P
F
F
8
1
2
m
n
t
p
w
r
l
i
m
.
w
m
f
Battery connections
Nonpower-limited
Figure 2.16 Power-Limited Wiring Example:
HPFF12(CM)(E) Shown with Single-input Control Module
Input Circuits
Power-limited
Specific Application:
Power & SLC are
power-limited
Output Circuits
Power-limited
AC Circuits
Non-power-limited
Relay Contacts
Nonpower-limited
H
P
F
F
1
2
m
n
t
p
w
r
l
i
m
6
u
p
.
w
m
f
Battery connections
Nonpower-limited
Maintain vertical
separation where
power-limited and
non-power-limited
circuits appear
close together.
Figure 2.17 Power-Limited Wiring Example:
HPFF12(E) Shown with Multi-module