Sierra Monitor Corporation 3100-01 Normal, Fault, Relay operation See Figure, Fire Relay

Instruction Manual

Figure 2-4: Model 3100 Series Detector Module (Back)

(“on” or “off”) of a switch (SW1-SW8). The first flash pattern indicates the position of the first switch (SW1), with each consecu- tive flash indicating the position of the next switch in order. The flash pattern is as fol- lows: only one LED “on” indicates a switch in the “off” position, both LEDs “on” indi- cates a switch in the “on” position. The po- sition of SW9 is not indicated. If SW9 is in the “on” position the detector will power up in fault mode.

2.6.2Normal

In Normal Mode the LEDs will flash briefly every 8 seconds. Whenever the device is in any other mode the “flash every 8 seconds” is suspended until the detector returns to Normal Mode.

2.6.4Fault

When the detector has power and is in Fault Mode LED1 (the left LED when facing the detector with the configuration switches be- low the LEDs) will be on for 5 seconds while the LED2 (the right LED) will be off see Table B.4 on page 12. The LED will turn "off" and LED 2 will begin flashing 1/2 sec- onds "on" and 1/2 second "off" a number of times. The number of times LED2 flashes indicates the type of fault. This cycle is re- peated until the fault is corrected. Only the highest number fault is indicated. Once a fault is corrected the next highest level fault will be indicated until all faults are cured. Except for fault level 2 and 3, a fire indica- tion will override a fault indication. The de- tector is disabled if a fault 2 or 3 is indicated.

2.6.3Fire

When any version of the Model 3100 de- clares a fire, both LEDs will come “on” and stay “on”. If the detector is set to "Latching" the LED's will remain "on" and stay "on" until the detector is powered down. If the detector is set to "Non-latching" the LED's will reset to "Normal Mode" when the fire is no longer being detected. If the Verified Fire is declared (Verify Fire is only on the En- hanced Models) the LEDs will blink “off” briefly every second. If the detector is set to "Latching" the LED's will remain in this state until the detector is powered down.

2.7Relay operation (See Figure 2-4)

The Model 3100-01 has two relays, the enhanced Models 3100-02, -03, -04 and -05 have four relays. The function of the Fire and Fault Relays is the same on all models. The Verify Relay and Aux. Relay is only available on the enhanced models. All relay connections are made at the connectors lo- cated on the back of the flame detector module.

2.7.1Fire Relay

The Fire Relay will energize whenever the detector declares a fire. Depending on the configuration setting, the relay will: “Latch-

Model 3100 Series Flame Detector (11/04) Page: 5