HPF-PS Series Instruction Manual —
P/N LS10227-003HP-E:C 2/2/2022
19
Connecting Multiple Power Supplies
Installation
2.8 Connecting Multiple Power Supplies
2.8.1 Cascading Multiple Units
Up to four HPF-PS power supplies can be cascaded together to provide additional NAC extenders for a system. Maintain separation of
power-limited and non-power-limited wiring as shown in Figure 2.6 on page 16.
Figures 2.11 and 2.12 show the controlling signal connected to Input 1 of HPF-PS1. However, typically any available Input of HPF-PS1 can
be used.
Figures 2.11 and 2.12 show NAC7 of HPF-PS1 - HPF-PS3 as the cascading output. However, any available Output of HPF-PS1 – HPF-PS3
can be used.
The following notes apply to Figure 2.11.
1.
Set all HPF-PS units to Slave (sync follower) Configuration.
2.
The debounce/dejitter setting must be set to 1 msec on all cascaded units. See Table 3.3 on page 24.
3.
For NFPA 72 2019 compliance, notification appliances cannot be installed on the interconnecting FACP control circuits wired to the
HPF-PS input circuits.
4.
The total line impedance for interconnected units cannot be such that it creates a voltage drop > 3.2 VDC.
5.
In Default mode, ground fault supervision is provided via the general trouble relay . For ground fault supervision in Retrofit mode, refer
to Table 5.1. Refer to Section 2.9 for different methods of ground fault monitoring for the power supply.
The following notes apply to Figure 2.12.
1.
Set HPF-PS1 to Master configuration, and the desired strobe/horn type. Set remaining HPF-PS units to Slave (sync follower)
configuration.
2.
The debounce/dejitter setting must be set to 1 msec on units# HPF-PS2 – HPF-PS4. See Table 3.3 on page 24.
3.
Strobe/Horn devices connected to the HPF-PS units are not guaranteed to be in sync with FACP devices when using this configuration
4.
For NFPA 72 2019 compliance, notification appliances cannot be installed on the interconnecting FACP control circuits wired to the
HPF-PS input circuits.
5.
The total line impedance for interconnected units cannot be such that it creates a voltage drop > 3.2 VDC.
6.
In Default mode, ground fault supervision is provided via the general trouble relay . For ground fault supervision in Retrofit mode, refer
to Table 5.1. Refer to Section 2.9 for different methods of ground fault monitoring for the power supply.
NOTE:
Any configuration that requires an additional control signal (i.e. a trigger signal), such as Selective Silence or Input #1 Sync
Configuration, will affect which Inputs may be available on PSE1 for use with cascading. (Triggers signals are usually assigned to Input 2.) Refer
to those sections of the manual for specifics.
NO NC
C
NO NC
C
NO NC
C
TB4
TB15
T
B
3
T
B
2
T
B
1
T
B
O
U
T
1
3
6
T
B
O
U
T
1
2
5
T
B
O
U
T
1
1
4
T
B
O
U
T
1
0
3
T
B
O
U
T
9
2
T
B
O
U
T
8
1
NO NC
C
NO NC
C
NO NC
C
TB4
TB15
T
B
3
T
B
2
T
B
1
T
B
O
U
T
1
3
6
T
B
O
U
T
1
2
5
T
B
O
U
T
1
1
4
T
B
O
U
T
1
0
3
T
B
O
U
T
9
2
T
B
O
U
T
8
1
NO NC
C
NO NC
C
NO NC
C
TB4
TB15
T
B
3
T
B
2
T
B
1
T
B
O
U
T
1
3
6
T
B
O
U
T
1
2
5
T
B
O
U
T
1
1
4
T
B
O
U
T
1
0
3
T
B
O
U
T
9
2
T
B
O
U
T
8
1
NO NC
C
NO NC
C
NO NC
C
TB4
TB15
T
B
3
T
B
2
T
B
1
T
B
O
U
T
1
3
6
T
B
O
U
T
1
2
5
T
B
O
U
T
1
1
4
T
B
O
U
T
1
0
3
T
B
O
U
T
9
2
T
B
O
U
T
8
1
A-
B
+
B
- A+
A-
B+
B-
A
+
A-
B+
B
-
A
+
A-
B+
B
-
A
+
A-
B
+
B
-
A+
A-
B+
B-
A
+
A-
B
+
B
- A+
A-
B+
B-
A
+
A-
B+
B
-
A
+
A-
B
+
B
- A+
A-
B+
B-
A
+
A-
B+
B
-
A
+
FACP
NAC or remote
sync output
Figure 2.11 System Sync Connections Triggered by FACP - Cascade
HPF-PS1
HPF-PS2
HPF-PS3
HPF-PS4
HPF-PS4
NO NC
C
NO NC
C NO NC
C
TB4
TB15
T
B
3
T
B
2
T
B
1
T
B
O
U
T
1
3
6
T
B
O
U
T
1
2
5
T
B
O
U
T
1
1
4
T
B
O
U
T
1
0
3
T
B
O
U
T
9
2
T
B
O
U
T
8
1
NO NC
C
NO NC
C
NO NC
C
TB4
TB15
T
B
3
T
B
2
T
B
1
T
B
O
U
T
1
3
6
T
B
O
U
T
1
2
5
T
B
O
U
T
1
1
4
T
B
O
U
T
1
0
3
T
B
O
U
T
9
2
T
B
O
U
T
8
1
NO NC
C
NO NC
C
NO NC
C
TB4
TB15
T
B
3
T
B
2
T
B
1
T
B
O
U
T
1
3
6
T
B
O
U
T
1
2
5
T
B
O
U
T
1
1
4
T
B
O
U
T
1
0
3
T
B
O
U
T
9
2
T
B
O
U
T
8
1
NO NC
C
NO NC
C
NO NC
C
TB4
TB15
T
B
3
T
B
2
T
B
1
T
B
O
U
T
1
3
6
T
B
O
U
T
1
2
5
T
B
O
U
T
1
1
4
T
B
O
U
T
1
0
3
T
B
O
U
T
9
2
T
B
O
U
T
8
1
A-
B+
B-
A+
A- B
+
B-
A
+
A-
B+
B-
A
+
A-
B+
B-
A
+
A-
B+
B
- A
+
A-
B+
B-
A+
A-
B+
B-
A+
A-
B+
B
- A
+
A-
B+
B
-
A+
A-
B+
B
-
A+
A- B+
B
-
A
+
A-
B
+
B-
A+
FACP
SLC
Figure 2.12 System Sync Connections Triggered by Control Module - Cascade
Control
Module
Regulated
24VDC
UL864 listed
power supply
HPF-PS1
HPF-PS2
HPF-PS3
HPF-PS4
