Bell System bellview Especificaciones descargar pdf (Pagina 17)

Bell View Video Entry System 1 Way

Miscellaneous Problems

Telephone will not buzz. ! Buzzer disabled by PRIVATE button. Check red

telephone LED is off.

! Faulty ‘V’,'O' or 'I' line between power supply and

phone. Check 10V - 15V across ‘V’ and ‘O’, and

10V - 15V across ‘I’ and ‘O’ when called.

! Faulty panel button.

Telephone ‘DOOR’ button does not

operate release.

! Telephone is not live.

! Fault on 'Z' or 'O' line. Check shorting 'Z' to 0V at

the M540 power supply, when live, operates the

release.

! Lock release supply low. Check 10V-15V across

the release with the lock button pressed and the

phone live.

! Faulty ‘DOOR’ button on telephone.

Lock release operates all the time. ! If the lock is a 'fail safe' type it has been connected

to 'FAIL SECR'/'fail secure' output. If the lock is a

'fail secure' type it has been connected to 'FAIL

SAFE' /'fail safe' output. Check to see if the

release is inactive when the lock button is pressed

or try swapping the connections over.

! ‘DOOR’ button stuck down (lock operates only

when live).

! 'Z' and 'O' lines permanently shorted together.

Supply voltage low (less than 10V,

any system component).

! Short circuit. Disconnect power supply loads and

check the output is 12V - 15V. Systematically

disconnect components one at a time or isolate

floors, etc. until the voltage is correct. Start with

connections close to the Power Supply.

! Cable voltage drop too high. Try doubling wires up

with spare cores. Refer to the Cable and Wiring

Details sections.

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Bell System bellview Especificaciones Pagina 17