38 HPFF8(E)/HPFF8CM(E) NAC Expander — P/N 53499:B4 10/1/2018
Applications Split Alarm and Selective Silence
5.3.2 Split Alarm Mode
The Split Alarm mode shows the versatility of the HPFF8. A combination of coded signals can be generated by or passed-through to the
NAC output circuit pairs of 1&2 and 3&4.
In this application, the power supply has been the configured for Split Alarm mode. Control Input #1 (TB3, Terminals 3 & 4) is con-
nected to an addressable control module which will control power supply output circuits 1 & 2. Control Input #2 (TB3, Terminals 7 & 8)
is connected to an addressable relay module which controls output circuits 3 & 4.
If the programming DIP switches are set as shown below the power supply is set as a Sync Generator with two synchronized (System
Sensor protocol) and two non-synchronized outputs. Control module #1 will cause the synchronized power supply output circuits 1 & 2
to turn on. Control module #2 will activate a Temporal Signal on output circuits 3 & 4.
Two independent inputs are required for Split Alarm. Two separate addressable modules can be used as shown in Figure 5.2, mounted on
the control board (one on the other) or in a separate UL-Listed panel. Alternately, two outputs of a six-output addressable module can
also be used and mounted on the Control board shown in Figure 5.4.
Notes for Figure 5.4:
1. When the power supply is in normal/standby state, a trouble will result in an open circuit condition on the control module output
circuit (monitored by the End-of-Line Resistors on TB3). The HPFF’s alarm circuit will always remain closed in the alarm state.
Therefore, the Trouble contacts at TB2 need to be used to report troubles to the FACP during an alarm. Refer to Section 4.1 on
page 31.
2. Do not loop wires under screw terminals. Break wires to maintain proper supervision.
3. The value of the ELRs (End-of-Line Resistors) across TB3 terminals depends on the control module used.
4. For a list of compatible devices, refer to the
HPP Device Compatibility Document.
5. The same gauge wire must be used if two conductors are connected to the same terminal of any terminal block.
6. Do not complete a continuous circuit around the screw terminal. There must be two separate wires on either side of the screw at the
terminal block. “T-tapping” is absolutely NOT ALLOWED.
SW8
ON
SW7
N/A
SW6
OFF
SW5
ON
SW4
OFF
SW3
ON
SW2
ON
SW1
OFF
NAC outputs circuits 1 & 2 will have sync for System Sensor device. NAC outputs circuits 3 & 4 will have a Temporal signal.
–
+
–
+
–
+
TB3
TB4TB1
TB2
SW2
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
J1
J2
1L1 1L2 2L1 2L2
3L1 3L2
4L1 4L2A–
ff8-spl6.wmf
Install jumpers
supplied
with module
Alarm Polarity Shown
S
u
p
e
r
v
i
s
i
o
n
R
e
l
a
y
Figure 5.4 Wiring for Split Alarm Mode
ELR
SLC
Ref +
Ref -
In #1 +
In #1 -
Out #1 +
Out #1 -
In #2 +
In #2 -
Out #2 +
Out #2 -
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