Wheelock MT4-12-LS Guía para resolver problemas descargar pdf (Pagina 11)

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1. Make sure that the mounting screws are tight. This insures that there is a

good ground connection between the PC board and the cabinet.

2. Dress all wires away from microprocessor (the center section of the pc

board). Use the tie-wrap loops on the left and right sidewalls of the cabinet

for anchoring wires. This step is important for minimizing the risk of

control radio frequency interference (RFI) with television reception.

Standard Phone Line Connections

The 5110XM provides two supervised dialer outputs: the main dialer and the

back-up dialer. In fire installations, both outputs must be connected to

separate telephone lines providing loop start service.

Connect the main dialer and back-up dialer (if used) outputs to telephone

company lines using the RJ31X cables supplied. Do not connect to telephone

company lines which provide ground start service.

DO NOT connect both outputs to the same telephone line. A secondary phone

line is required in case of primary phone line failure.

1. WARNING! To prevent the risk of shock disconnect the telephone lines at

the telco jack prior to servicing this control.

2. If the control is connected to a PBX telephone line, make sure that the PBX

system has a backup power supply that can support it for at least 24 hours

(central station usage) or 60 hours (remote station usage). Many PBX

systems DO NOT have power backup and will cause communication

failures when power is lost.

Enabling the Dialer Outputs

To enable the dialer outputs, entries must be made in field *79. Enter 1 in the

first entry space to enable main dialer. Enter 1 in the second entry space to

enable backup dialer.

Telephone Line Supervision

The supervision circuits on both the main and backup dialer outputs will

indicate a fault when the tip/ring voltage falls below 2 volts, provided that their

supervisory zones are enabled (zones 11 and 12, respectively). These zones are

enabled in field *56 and should be assigned a response type of 19 (24-hr.

trouble).

In fire installations, both outputs must be configured for line

fault supervision.

Dialer Operation

When only the main dialer is enabled ([1,0] in field *79), the 5110XM will

attempt to route all calls over the main output. When both main and back-up

dialers are enabled ([1,1] in field *79), the 5110XM will attempt to route all

calls over the main output unless a fault is detected, at which time it will

attempt to use the back-up output. Line faults will light the line fault indicator

and, if a keypad is installed, will result in a zone 11 main dialer fault or zone 12

back-up dialer fault display. The control will make up to ten attempts to

transmit a report. (Ten attempts will be made to primary number when only

this number is programmed. Otherwise, five attempts will be made to the

primary number followed by five attempts to the secondary number when both

numbers are programmed.) After the tenth attempt, the control will hang-up

and will light the built-in Comm Fail indicator. A Comm Fail message with

also be displayed at the keypads (if installed).

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