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Power Failure Mode

When supply voltage drops below 10V at single or both power inputs, the device switches from a

standby condition to the Power Failure Mode. Voltage thresholds for switching to the Power Failure

Mode depend on the Both Power Inputs Monitoring setting ⎯ see Signal-10 System Settings Section of

this Manual.

If Both Power Inputs Monitoring is enabled, the device switches to the Power Failure Mode and sends a

POWER FAILED message to a network controller when supply voltage drops below 10V at any power

input. Once supply voltage at both power inputs becomes higher than 11V, the device recovers the Op-

eration Mode.

If Both Power Inputs Monitoring is disabled, the device maintains the Operation Mode until supply volt-

age exceeds 10V at any power input. If supply voltage becomes lower than 10V at both power inputs,

the device switches the Power Failure Mode and sends the POWER FAILED message to the network

controller. Once supply voltage becomes higher than 11V at any power, the device recovers the Opera-

tion Mode.

In the Power Failure Mode the device completely retains operation, but READY LED blinks yellow (see

Table 6) and the device sounder beeps.

If supply voltage drops below 9V at both power inputs, the device terminates its operation.

If supply voltage increases to 11V at any power input or both power inputs (depending on the Both

Power Inputs Monitoring setting), the device automatically switches from the Power Failure Mode to the

Operation Mode and generates the POWER RESTORE message.

Output Circuit Failure Mode

When a short circuit or an open circuit occurs between external executive devices and LAM or SIR out-

puts the device switches to the Output Circuit Failure Mode. In this mode the device completely retains

operation, but READY LED blinks red (see Table 6) and the built-in sounder beeps.

The device automatically recovers the Operation Mode after having repaired the failure.

Master Key Programming Mode

This programming mode is intended for service personnel, responsible for the device adjustment and

maintenance. To switch the device from the standby condition to the Master Key Programming Mode,

press tamper switch with a specific code combination. For detailed description of the Master Key Pro-

gramming Mode, refer to the Programming of a Master Key by Hardware Section on the page 86.

User Key Programming Mode

This programming mode is intended for personnel, responsible for the device adjustment and mainte-

nance. To switch the device from the standby condition to the User Key Programming Mode touch the

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Bolid Signal-10 Manual do Utilizador Página 38