SILENT KNIGHT 5104B Installationshandbuch PDF herunterladen (Seite 7)

Model 5499 Distributed Power Module Installation Manual

4 P/N 151253

3.2 Signal Input Terminals

Terminals 14 through 19 are polarized signal input terminals. They provide the signaling

connection from the main panel to the 5499. See Figure 4-2 for more details.

Section 5 shows connections to specific Silent Knight fire alarm control units.

The main panel supervises its notification appliance circuits used for communicating with the

5499 the same way it supervises ordinary notification appliance circuits. The signal inputs on

the 5499 monitor the polarity of the voltage coming from the main panel’s notification

appliance circuits to determine when to operate the notification appliance circuits on the 5499.

The 5499 emulates the trouble behavior of a normal notification appliance circuits by

breaking the EOL supervision current for internal or output trouble conditions on the 5499.

Note that the 5499 will accurately sense the polarity of the main panel’s notification appliance

circuits to drive the outputs whether or not the supervision connection is intact. The following

situations will disconnect the EOL supervision at the signal inputs and indicate a trouble

condition:

• Low AC power

• Low Battery condition

• Earth ground fault to the system power or system ground

• Auxiliary output power-limited condition

• EOL supervision trouble or power-limited condition at an output

Trouble conditions will not necessarily occur for both inputs when the trouble is specific to a

particular output. Only the signal input controlling the output circuit that is in trouble will

indicate a trouble condition. Below are examples where both inputs do NOT indicate trouble

for a trouble occurring at only one output circuit.

Note:Once the inputs are driven with forward polarity to activate the outputs, the main control panel will not be

able to sense trouble conditions through its notification appliance circuits connected to the 5499 input cir-

cuits. Use the 5499 trouble relay when it is necessary to monitor trouble conditions and active alarm con-

ditions at the same time.

Section 7 explains the significance of each trouble condition in more detail.

Example 1: If input 1 controls all four outputs, a fault on any output will cause input 1

to indicate trouble. The fault does not affect input 2.

Example 2: If input 1 controls outputs 1 and 2, and input 2 controls outputs 3 and 4, a

fault condition on output 3 or 4 will cause input 2 to indicate trouble. The

fault does not affect input 1.

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SILENT KNIGHT 5104B Installationshandbuch Seite 7