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EIA-485 Shield Termination

Shield in Full Conduit

26

Document 53244   Rev. A   03/14/08   P/N 53244:A

5.2

Shield in Full Conduit

The EIA-485 line allows the FACP to communicate with the LCD-80FC 
Indicator. The shield for the EIA-485 line must be connected to earth 
ground at the FACP (both exiting and entering the FACP) but must be 
left floating (no connection) at the indicator if it is the first or only 
device on the EIA-485 line. If a second indicator is connected, the shield 
leaving the first indicator must be floating. The shield entering the sec-
ond indicator must be connected to the Earth Ground terminal (P2-7) on 
the second indicator. If additional indicators are connected, the shield 
leaving each indicator must be left floating and the shield entering the 
following unit must be connected to the Earth Ground terminal (P2-7) 
on the indicator.

Caution! Do not allow the floating shield end (no connection) to contact 
the conduit.  The floating end should be insulated from earth ground.

Notes:

1. Power-limited 24 VDC power may be run in the same conduit as the 

EIA-485 wiring

2. Twisted, shielded wire is recommended for the EIA-485 communica-

tions loop

3. Each electrical backbox is connected to earth ground via the conduit
4. Shield is connected to the FACP cabinet (earth ground) leaving and 

entering the FACP

EIA-485 Loop
  in Conduit

Shield

Earth Ground

Earth Ground

Figure 5-2: EIA-485 In Conduit

LCD-80FC Box

LCD-80FC

P1-2 (+)

EIA-485 (IN)

P1-4 (-)

EIA-485 (IN)

P2-7 Earth 

Ground (IN)

Connect the shield drain wire to the Earth 
Ground Terminal on the Indicator

Shield Drain Wire

L

CD80F

nos

.c

dr

Indicator

Indicator

Indicator

FACP

Summary of Contents for LCD-80FC

Page 1: ...Remote Fire Indicator LCD 80FC PN 53244 A ECN 08 191 Document 53244 03 14 08 Rev A ...

Page 2: ...es especially in bedrooms smok ing in bed and violent explosions caused by escaping gas improper storage of flammable materials etc Heat detectors do not sense particles of combustion and alarm only when heat on their sensors increases at a predetermined rate or reaches a predetermined level Rate of rise heat detectors may be subject to reduced sensitivity over time For this reason the rate of ris...

Page 3: ...chnical Services Department if any problems are anticipated or encountered Disconnect AC power and batteries prior to removing or inserting circuit boards Failure to do so can damage circuits Remove all electronic assemblies prior to any drilling filing reaming or punching of the enclosure When possible make all cable entries from the sides or rear Before making modifications verify that they will...

Page 4: ...Notes 4 Document 53244 Rev A 03 14 08 P N 53244 A ...

Page 5: ...Display Patterns 15 Switch Functions 16 Local Silence 16 Lamp Test 16 LED Indicators 16 AC Power 16 Alarm 16 Supervisory 16 Trouble 16 Alarm Silenced 16 Mounting 17 Indicator Preparation 17 Semi flush Mount Backbox 19 Surface Mount Backbox 21 Electrical Connections 22 Power Connections 22 EIA 485 Connections 23 EIA 485 Shield Termination 24 Shield Not in Conduit 25 Shield in Full Conduit 26 ...

Page 6: ... LCD 80FC also provides system status LEDs to display Power Alarm Trouble Supervisory and Alarm Silenced conditions The LCD 80FC is capable of performing local silence and local lamp test Communication between the FACP and the LCD 80FC is accomplished over a two wire serial interface employing the EIA 485 communication standard Up to 32 indicators may be connected to the two wire EIA 485 circuit T...

Page 7: ...panel Device zone custom alpha labels from the control panel Time date and device address from the control panel EIA 485 connects to control panel terminal port Plug in terminal blocks for ease of installation and service DIP switches control piezo enable disable transmit receive mode FACP selection and function switches Up to 32 LCD 80FC Indicators per FACP Mounting options Surface mounting in SB...

Page 8: ...ettings Example on page 13 The LCD 80FC sounder if enabled will be activated when any new alarm or trouble is received from the panel It is silenced by an Acknowledge switch press at the FACP Piezo must not be disabled without approval of the LAHJ Local Authority Having Jurisdiction Piezo Sounder Membrane Connector Cable connection to membrane switches for Acknowledge Silence Drill and Reset FDU80...

Page 9: ... to illustrations on the following page for LCD 80FC connections to the MS 9200UDLSC and MS 9600LSC MS 9200UDLSC TB8 MS 9600LSC TB7 LCD 80FC P1 Connector Terminal 2 IN Terminal 5 IN Terminal 1 OUT Terminal 4 IN Terminal 6 IN Terminal 3 OUT Terminal 1 OUT Terminal 7 OUT Terminal 2 IN Terminal 3 OUT Terminal 8 OUT Terminal 4 IN Operating Voltage Range 18 VDC to 28 VDC Current Consumption 24 VDC nomi...

Page 10: ...14 08 P N 53244 A LCD 80FC MS 9200UDLSC Figure 1 3 FACP EIA 485 Wiring to LCD 80FC EIA 485 Out to Next Device EIA 485 Out to Next Device or back to FACP EIA 485 EIA 485 Out to Next Device EIA 485 Out to Next Device or back to FACP EIA 485 MS 9600LSC LCD 80FC IN OUT ...

Page 11: ...llow the FACP to supervise the indicator Multiple Indicators if multiple LCD 80FC indicators are con nected to the EIA 485 loop the indicator physically connected as the last device on the loop farthest from the OUT terminals on the FACP must have Switch 3 set to the ON position in order to supervise all indicators on the loop All remaining indicators must have Switch 3 set to the OFF position for...

Page 12: ...e appropriate switch settings Programming Note Depending on the FACP which is connected to the LCD 80FC it may be necessary to enable communication with the indicator in the FACP programming Refer to the appropriate FACP manual for programming information 7 and 8 Future use Fire Alarm Control Panel SW1 4 SW1 5 SW1 6 Use This Setting OFF OFF OFF Future Use OFF OFF ON Future Use OFF ON OFF Future Us...

Page 13: ... of LAHJ 3 DIP switch 3 OFF Receive Only This setting is used for all indicators except the last or only LCD 80FC Indicator on the EIA 485 line 4 DIP switches 4 through 6 OFF Configured correctly for operation with the available FACP 5 DIP switches 7 and 8 OFF these switches are not used Figure 1 4 DIP Switch Settings Example switch 1 shown in OFF position switch 2 shown in ON position dipswlcd80f...

Page 14: ...rom the last LCD 80FC back to the FACP 2 Up to 32 LCD 80FC Indicators may be used on the EIA 485 cir cuit Refer to the specific FACP manual to determine the maximum current available for powering the LCD 80FC If additional indicators are connected the FCPS 24 may be used to supply additional power Power supplies used for this purpose must have their negative terminals commoned together 3 Between e...

Page 15: ... period of over 30 seconds it will activate its local sounder if so programmed and display the following message A Communication Fault may be due to one of the following conditions FACP has not been programmed to communicate with the LCD 80FC Refer to the appropriate FACP manual programming section EIA 485 wiring between the LCD 80FC and FACP has an open Polarity of the EIA 485 wiring between the ...

Page 16: ...larms occur The Alarm LED turns off when the Reset switch at the FACP is pressed 2 3 3 Supervisory This is a yellow LED that turns on steady when one or more supervi sory conditions occur such as a sprinkler valve tamper condition It turns off when the Reset switch at the FACP is pressed 2 3 4 Trouble This is a yellow LED that turns on steady when one or more trouble conditions occur The LED turns...

Page 17: ...the knock outs and mount the box in or on the wall depending on the type of instal lation desired Be certain that power is not applied to the wiring during the installation procedure Note To ensure static protection all enclosures including the LCD 80FC electrical box must be connected to earth ground Never use the shield for grounding purposes To mount the LCD 80FC Indicator in an electrical box ...

Page 18: ...Figure 3 2 Hardware and Backboxes LCD 80FC flange LCD 80FC Trim Ring replacement P N 23165 3 Gang Electrical Box P N 10103 semi flush mount 3 Gang Electrical Box P N SBB 3 surface mount LCD80flg cdr LCD2X20tr cdr 10103box cdr Sbb 3 cdr Three Ganged Electrical Boxes 3gngbox cdr ...

Page 19: ...ange and the four screws provided for this purpose Replace the trim ring and secure with the two screws which were previously loosened Adjust the plastic trim ring to the surface of the wall before tightening the screws Do not overtighten Figure 3 3 Mounting in SBB 3 Box LCD 80FC flange 3 gang electrical box P N 10103 Three gang electrical box P N 10103 flange EIA 485 and power wiring LCD80flg cdr...

Page 20: ...he four mounting holes on the LCD 80FC flange and the four screws provided for this purpose Replace the trim ring and secure with the two screws which were previously loosened Adjust the plastic trim ring to the surface of the wall before tightening the screws Do not overtighten Figure 3 4 Mounting in 3 Ganged Electrical Boxes LCD 80FC flange LCD 80FC Three electrical boxes ganged together flange ...

Page 21: ...switch SW1 for the desired options Refer to Figure 1 4 on page 13 Carefully insert the LCD 80FC into the three gang electrical box and attach it using the four mounting holes on the LCD 80FC flange and the four screws provided for this purpose Replace the trim ring and secure with the two screws which were previously loosened Do not overtighten Figure 3 5 Surface Mounting LCD 80FC flange Mounting ...

Page 22: ...r Maximum LCD 80FC current draw from the power supply under nor mal and alarm conditions is 64 3 mA Maximum current draw from the control panel s secondary power source batteries under loss of AC power is 25 mA since the LCD backlight is turned off during AC loss Backlighting is turned back on during AC loss only for alarm conditions in the system Notes 1 All connections are power limited and supe...

Page 23: ...ever strongly recommended that the power and communication wires be separate whenever possible 5 Ferrite Core P N FBD 1 is required to meet FCC Part 15 require ments if the EIA 485 wiring is not in conduit 6 The EIA 485 circuit is rated at 5 5 VDC maximum and 60 mA maximum 7 The LCD 80FC Indicator has resistors built into the circuit board at the In Terminals 2 4 and the Out Terminals 1 3 for impe...

Page 24: ...as 120 VAC service noisy elec trical circuits that are powering mechanical bells or horns audio circuits above 25 VRMS motor control circuits or SCR power circuits Note To ensure static ESD electrostatic discharge protection all enclosures including the LCD 80FC electrical box must be connected to earth ground Never use the EIA 485 shield for this purpose The EIA 485 shield is for radiated noise e...

Page 25: ...e first indicator must be left floating The shield entering the second indicator must be connected to the three gang box or Earth Ground terminal P2 7 on the second indi cator If additional indicators are connected the shield leaving each enclosure must be left floating and the shield entering each must be con nected to the three gang box or the Earth Ground terminal P2 7 on the indicator EIA 485 ...

Page 26: ...ator must be left floating and the shield entering the following unit must be connected to the Earth Ground terminal P2 7 on the indicator Caution Do not allow the floating shield end no connection to contact the conduit The floating end should be insulated from earth ground Notes 1 Power limited 24 VDC power may be run in the same conduit as the EIA 485 wiring 2 Twisted shielded wire is recommend...

Page 27: ...acklit 6 7 C communication 6 11 communication failure 15 Communication Fault 15 components 8 configuration see also FACP selection 12 current specifications 9 22 custom alpha labels 7 D device type identifiers 7 DIP switch settings see also switch settings example 13 DIP switches 7 11 display information 6 display on powerup 15 distance maximum 7 14 E earth ground 17 EIA 485 6 7 11 14 19 21 23 26 ...

Page 28: ...r 6 indicator maximum 14 L LAHJ 8 11 Lamp Test switch 16 LCD display 6 7 see also display on powerup 15 LED 7 see also system status 6 LEDs 16 Local Authority Having Jurisdiction see also LAHJ 8 Local Lamp Test switch 7 Local Silence switch 7 M maximum indicators 6 7 mounting 17 19 20 21 mounting options 7 O operation 15 P piezo sounder 7 8 11 power for annunciator 6 power LED 6 7 16 power require...

Page 29: ...hield no conduit 25 see also EIA 485 24 specifications 9 static protection 17 24 supervision 11 14 22 supervisory LED 6 7 16 surface mounting 21 SW1 see also DIP switches 11 switch functions 16 switch settings 11 12 switch settings example 13 system status 6 7 T terminal block 7 9 20 21 three gang electrical boxes 17 18 three ganged electrical boxes 20 trim ring 17 18 19 20 21 trouble LED 6 7 16 t...

Page 30: ...Index 30 Document 53244 Rev A 03 14 08 P N 53244 A distance 23 EIA 485 23 ferrite core 23 no conduit 25 power 22 type 23 wiring requirements 14 ...

Page 31: ...n Material Authorization form from our Return Authorization Department This writing constitutes the only warranty made by Honeywell International Inc with respect to its products Honeywell International Inc does not represent that its products will prevent any loss by fire or otherwise or that its products will in all cases provide the protection for which they are installed or intended Buyer ackn...

Page 32: ...World Headquarters 1 Firelite Place Northford CT 06472 1653 USA 203 484 7161 fax 203 484 7118 www firelite com ...

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