Specifications

Operation

5.2 Intelligent NAC Expander (INX) Modes

The INX-10A is capable of synchronizing signal rates internally or receiving the signals

externally. The INX-10A also has the ability to synchronize the signal rates for another INX-

10A in a Master - Slave relationship.

5.2.1 INX Internal Sync Mode

In this mode all signal and sync strobe rates are produced in the INX-10A. When a NAC circuit

is commanded by the FACP to turn on, the NAC output signals are produced based on how

the DIP switches are configured.

The Sync Outputs will be activated when one of the NAC circuits has been activated. If two

stage operation is used, Sync Output1 is to produce the rate for first stage signal and Sync

Output 2 is to produce the second stage signal.

Set Dip SW3, Bit 8 to zero.

For information on configuring signal and strobe rates see Table 8 Setting Alert Rates,

Evacuation Rates, NAC 5 Output Functions on page 36 and Table 9 Setting Strobe Types,

NAC 1-3 Supply Settings, NAC 4 Output Function on page 37.

5.2.2 INX External Sync Mode

When one of the Sync Inputs is activated, the INX-10A outputs follow the signal pattern of the

Sync Input. The INX-10A must be configured as a slave to operate in this mode.

All synchronization signals are supplied from the FACP or Master INX-10A.

To enable this mode for Bell Signals set Dip SW3, Bit 8 to one, and set Alert (Dip SW4, Bits 1-

3) Evacuation (Dip SW4, Bits 4-6) and Strobe (Dip SW5, Bits 1-3) rates to zero. The NAC and

Sync outputs are to follow the Sync Inputs.

To enable this mode for other signals for sync Horn Strobes, set Dip SW3, Bit 8 to one and set

Alert (Dip SW4, Bits 1-3) and Evacuation (Dip SW4, Bits 4-6) to use the Stobe Manufacturer

Sync Rate (1-0-0) and Strobe (Dip SW5, Bits 1-3) to match the protocol being used in the

system. The NAC and Sync Outputs are to follow the Sync Inputs.

If the INX-10A loses synchronization with the FACP during alarm, the INX-10A will default to

the internal configured rate. A trouble will be generated back to the FACP. The INX-10A will

continue to use the default rate until the FACP is reset.

Attention: When using multiple INX-10A panels in a Master - Slave relationship,

always assign a lower address to the master INX-10A panel.

Attention: External Sync Mode cannot be used in conjunction with Independent

Mode.