Installation guide

1. In the SINGLE-ZONE MONITOR option, if a 2K2-ohm resistor is connected between

terminals 6 and 7, the display will show AREA-1 5 CLOSED [28].

2. If the circuit is opened between terminals 6 and 7, the panel will show

AREA-1 5 DISCON [89].

3. If a short circuit is placed across terminals 6 and 7, the panel will show

AREA-1 5 SHORT [3].

4. If two resistors in series are connected to terminals 6 and 7, the panel will show

AREA-1 5 OPEN [42].

The number in square brackets represents the analogue value of the voltage coming from the

LEM zone input and should be within +2 of this value. By examining different inputs, you will

be able to determine the analogue values for all zones and these can be printed or recorded for

future reference when trouble-shooting faulty zones. A table of acceptable analogue values

follows:

INPUT COND. MIN. MAX. TYP.

SHORT 0 21 3

CLOSED 22 36 28

OPEN 37 55 42

DISCON 56 90 85

These readings will remain near the typical values unless the resistance of the LEM trunk

increases due to excessive length (around 1500 metres) or until the limit of cable capacitance

is reached, at which point they will increase as extra cable is added. The system assumes a

nominal cable capacity of 50 pf/m to allow 2-km maximum length.

During initialization, zones with marginal responses will also be displayed. Zones with values

that are outside of the min./max. range will be individually displayed. (See LEM-LINE

INITIALIZATION on page 35 for further information.)

SET IDS/OPTIONS (C key): Both the Service user, user number 1, and the Master user, user

number 2, can select this function to set identification codes for the 248 general users. These two

users can also assign functions and modes to other users but each will be presented with a

different list of functions and modes to choose from. General users, if authorized, can then re-

assign their functions and modes to others. At any point, should a general user attempt to enter a

function or mode other than that permitted in his or her list, the display will show ** INVALID

ENTRY **. Enter your user code and then press the C key (shift FULL DISARM). The panel

will display a flashing sub-menu: IDS--OPTIONS-NAMES.

PROGRAMMING THE PANEL cont.