POTTER FFT-EXP Fire Fighters Telephone Expander Instruction Manual
- June 9, 2024
- POTTER
Table of Contents
POTTER FFT-EXP Fire Fighters Telephone Expander Instruction Manual
NOTICE TO THE INSTALLER
This manual provides an overview and the installation instructions for the FFT-EXP module. All terminals are power limited and should be wired in accordance with the requirements of NFPA 70 (NEC) and NFPA 72 (National Fire Alarm Code). Failure to follow the wiring diagrams in the following pages will cause the system to not operate as intended. For further information, refer to the control panel installation instructions. The module shall only be installed with listed control panels. Refer to the control panel installation manual for proper system operation.
DESCRIPTION
The FFT-EXP is an expander module that provides 12 Class B or 6 Class A phone circuits. The expander module connects to the FFT-1000 through the F-Link and Voice terminals and is expandable up to six (6) devices for Class B systems and up to fourteen (14) for Class A systems. A maximum of two (2) FFT-EXP’s can be mounted in the FFT 1000. Additional FFT-EXP’s may be mounted in the AE-8 and AE-14 remote cabinets. All FFT-EXP’s must be installed in the same room within 20 feet of the FFT-1000 and wiring must run in conduit. AE-8 (Part Number 3992675) – A maximum of four (4) FFT EXP’s can be stored in the AE-8 enclosure. AE-14 (Part Number 3992676) – A maximum of six (6) FFT EXP’s can be stored in the AE-14 enclosure.
SETTING THE ADDRESS
The FFT-EXP address is set by a five (5) position dip switch, which is used to program the device address ranging from one (1) to fourteen (14).
Figure 1. DIP SWITCH SETTINGS TABLE (ADDRESSES 1–31)
Note: Each “gray” box indicates that the dip switch is “On,” and each
“white” box indicates “Off.” The examples shown below illustrate a
P-Link’s dip switch settings: the 1st example shows a P-Link module not
addressed where all dip switch settings are in the default “Off” position,
the 2nd illustrates an addressed P-Link module via the dip switch settings.
Figure 2. EXAMPLES OF P-LINK MODULE SHOWING DEFAULT DIP SWITCH SETTING (UNADDRESSED) & ADDRESSED
-
All dip switches are shown in the “Off” position.
-
Example shows this P-Link module address = 10. Dip switches #2 & 8 are in the “On” position.
Before connecting a device to the RS-485 connection, take the following precautions to prevent potential damage to the RS-485 connection.
- Power to the RS-485 connection is removed.
- Field wiring on module is correctly installed.
- Field wiring has no open or short circuits.
TECHNICAL SPECIFICATIONS
| Standby Current | 56 mA |
|---|---|
| Alarm Current | 116 mA |
| FFT-EXP Voltage | 24VDC |
| Operating Temperature Range | 32° to 120° F (0° to 49°C) |
| Operating Humidity Range | 10% to 93% (non-condensing) |
INSTALLATION
The FFT-EXP connects to the FFT-1000 using the F-Link and Voice terminals to establish communication. The connections are power limited and supervised. Each board is equipped with stacker bracket for secure and accessible mounting. The FFT-EXP must be installed within 20 feet of the FFT-1000 and the wiring must run through conduit.
Figure 3. FFT-EXP MODULE
Figure 4. FFT-EXP INSTALLATION IN CABINET
AE-8 (P/N 3992675)
- MAXIMUM FOUR (4) FFT-EXP’S CAN BE STORED IN THE AE-8 ENCLOSURE.
AE-14 (P/N 3992676)
- MAXIMUM SIX (6) FFT-EXP’S CAN BE STORED IN THE AE-14 ENCLOSURE
NOTES
- RS-485 wiring style supports class A and class B.
- RS-485 is power limited.
- Wiring for terminals (A, B) and (+, -) are supervised.
- All wiring is between #12 (max.) And #18 (min.).
- Wire preparation – strip all wires 1/4 inch from their edges as shown here:
- Stripping too much insulation may cause a ground fault.
- Stripping too little may cause a poor connection and subsequently an open circuit
These instructions do not purport to cover all the details or variations in the equipment described, nor provide for every possible contingency to be met in connection with installation, operation and maintenance.
Specifications subject to change without prior notification.
For Technical Assistance contact Potter Electric Signal Company at 866-956-1211.
Actual performance is based on proper application of the product by a qualified professional.
Should further information be desired or should particular problems arise, which are not covered sufficiently for the purchaser’s purpose, the matter should be referred to a distributor in your region.
References
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