Specifications

24VDC

Power Supply

Figure 11

24VDC Connection to the SP4-TZC

Apply power to the 24VDC Power Supply. The “POWER” LED indicator will turn ON. The

“RS485 COM1 ACTIVE” LED indicator should be BLINKING. The “STANDBY/RUN” LED

will BLINK for a maximum of 1 minute before becoming solid ON. See Figure 12 for LED

indicator locations.

NOTE: If an SP4-APS splitter is not energized during this process, the SP4-TZC will not “see” it and will go

on to the next splitter. This will affect the order of the Zone Codes.

NOTE: If the “TROUBLE” LED indicator is ON, and the “SPLITTER MISMATCH” LED indicator is ON,

one or more of the CLASS switches on the SP4-APS splitters is in the wrong position. See Figure 12

for LED indicator locations. Check the CLASS switch on each splitter and make sure all are in CLASS

“A” or CLASS “B” as desired.

Standby/Run

LED (Green)

Power On

LED (Green)

RS485 COM1

Active LED (Green)

Trouble

LED (Amber)

Splitter Mismatch

LED (Amber)

Figure 12

SP4-TZC LED Indicators

STEP 2