MP200 Installation Manual
23
9.0 Troubleshooting
9.1 SYSTEM FAILURE
• The following systems failures are managed by the MP200:
- E-eprom failure
- Serial lines (BUS) failure
- Modem failure
- Fuse breakage on the control unit and on the remote unit
• The E-eprom failure may arise when saving data in a protected memory (e.g. change code, store an event in
the Log Event memory etc).
• The serial line (BUS) failure may arise for any dialogue problems that occur between the control unit and the
peripherals units, caused by tampering or an accidental breakdown.
• The modem failure may arise for any communication problems occurring on the telephone line. See details in
the STM 200 Modem Communicator manual.
• In general systems failures are indicated by the following:
- red LED 3 lights up on the control unit board
- a sponaneous message on all KP200D keypad displays, with relative details.
- detailed description of the event is entered in Historic Events memory.
- switching of any programmed Failure outputs
- communication to programmed telephone numbers (if the STM 200 Modem Communicator board is present).
• Removal of the cause of the failure will restore normal conditions and thus generate Failure Eliminated events
via the Modem/Communicator and in the Historic Events memory.
9.2 POWER FAILURE
• A power failure to the control unit as well as to any concentrator remote units is managed according to the
length of time the power supply is interrupted. In fact, it is more usual for mains interruptions to last just a few
minutes due to momentary problems suffered by the service supplier. The MP 200 treats these interruptions/
recoveries as temporary events. If the power failure exceeds an hour the event is considered to be a breakdown.
• In the case of temporary mains interruption/recoveries, the sequence of events managed by the MP 200 is as
follows:
- when power fails:
LED L1 on the control unit switches off.
LED
+
-
on the keypad switches off.
A "power failure" + details is recorded in Historic Events.
- when power is restored:
LED L1 on the control unit switches on.
LED
+
-
on the keypad switches on.
“Mains OK” + details is recorded in Historic Events
“Mains Not OK” + details is recorded in Historic Events.
Communication of the power failure event to programmed telephone
numbers (if the STM200 Modem Communicator board is present).
Summary of Contents for MP 200
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