3: Nfpa 72 Polarity Reversal - Honeywell IFP-75 Installation & Operation Manual

Control Panel Installation
4.15.3 NFPA 72 Polarity Reversal
Using the 5220 Module
When the 5220 is wired and programmed for polarity reversal, it reports alarm and trouble events to a remote site. Alarms will override the
trouble conditions and it will not be possible to reset the remote indicator until the condition is cleared and the control panel is reset.
If an alarm condition occurs, the alarm relay will close, overriding the trouble condition.
Standby Current:
Alarm:
Max. Voltage:
To install the 5220 for polarity reversal, follow the steps below:
1. Locate the knockout on the right side of the control panel cabinet to connect the 5220 using a short piece of conduit (it must not exceed
20 feet in length).
2. Wire the 5220 to the control panel using the four-wire pigtail provided as shown in Figure 4.51. This diagram also shows how to
connect the 5220 to the remote indicator. Do not install an EOL resistor in the terminals of the NAC circuit used for this application.
3. Connect the earth ground wire to the 5220 chassis with the mounting screw.
4. Program the NAC circuit used as continuous and non-silencing. Refer to Section 8.5 for the Point Programming, refer to Section 8.4 for
Group Settings, and refer to Section 8.3 for Zone Settings and Mapping.
5. If necessary, adjust the loop current using the potentiometer (R10) on the 5220 board. Normal loop current is 2-to-8 mA with a 1k ohm
remote station receiving unit. Maximum loop resistance is 3k ohm.
Program Relay for Alarm
Max Voltage: 27.4 VDC
Max Current: 1Amp
Note:
NAC circuit 1 and Relay 2
used as examples. Either
NAC circuit and Relay
circuit can be used.
Not suitable for remote station protected premises service
where separate transmission circuits are required for fire
supervisory (if applicable), and trouble signals.
Using the 7644-L8 Module
When the 7644-L8 is used for polarity reversal, it allows alarm and trouble events to be reported to a remote site. Alarms will override trou-
ble conditions and it will not be possible to reset the remote indicator until the condition is cleared and the control panel is reset.
Procedure to Install the 7644-L8 for Polarity Reversal
1. Wire the 7644-L8 to the control panel as shown in Figure 4.52.
2. Do not install an EOL resistor on the terminals of the NAC circuit used.
NOTE: Use only NAC circuits on the control panel for reverse polarity.
3. Program the NAC circuit as a notification circuit. See Section 8.5.
4. Map the group to activate non silenceable, constant on in response to a system general alarm, and to discuss in response to a system
trouble.
5. Intended for connection to a polarity reversal circuit of a remote station receiving unit having compatible rating.
52
100mA
100mA
27.4VDC
RELAY 2 RELAY 1
NO C NC NO C
Figure 4.51 Polarity Reversal Connection Using the 5220 Module
IFP-75/IFP-75HV Installation/Operation Manual — P/N LS10147-001SK-E:D 06/25/2021
TROUBLE SLC IN SLC OUT SLC PROG
_ _ _
NC NO C NC
+ +
Brown
Red
Orange
Remote Station Applications
SBUS NAC 1 NAC 2
_
A B
+ +
All circuits power-limited
All wiring supervised.
1 2 3 4
Jumper terminals 3 & 4
when City Box is not used.
-
Remote
Indicator