Interpreting Ex2 Leds; Binary Output Leds - Trane Engineered Smoke Control System Application Manual

Chapter 6 Installing the EX2 expansion module
96

Interpreting EX2 LEDs

The information in this section will help you interpret LED activity on
the EX2 expansion module. Figure 52 shows the location of each LED.
Figure 52. LED locations on the EX2
TX and RX
communications LEDs

Binary output LEDs

The LEDs labeled LD2 through LD5 indicate the status of the four binary
outputs. Table 24 describes binary output LED activity.
Note:
Each binary output LED reflects the status of the output relay on the
circuit board. It may or may not reflect the status of the equipment
the binary output is controlling. Field wiring determines whether the
state of the binary output LED also applies to the status of the end
device. Table 24 describes the LED states.
Table 24. Binary output LEDs
LED activity
LED is on continuously
LED is off continuously
Binary output LEDs
Status LED
Explanation
The relay output is energized.
The relay output is de-energized or there is no
power to the board.
BAS-APG001-EN