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Cooper Bussmann BU-905U-L Wireless I/O Installation Manual
The front panel contains the following components:
3A1580Rev1.7
The LEDs on the front panel indicate the unit status:
LED Status
Indicates
None
No power supply.
OK LED Green
Current status of the unit OK.
OK LED Red
Fault condition detected in unit.
RX Led Flashes
Receiving Message.
CF Led ON
Module Communication Failure Output is active.
PG LED on
Configuration Cable Connected.
Output LED ON
The Output LEDS (i.e., D1, D2, D3) light when the corresponding output is active.
D1
Relay output D1 is ON (Contact Closed).
D2
Relay Output D2 is ON.
D3
Relay Output D3 is ON.
LEDs with RSSI Push
When you press the RSSI push button, the unit shows the signal strength by lighting the
Button Pressed
LEDs from the bottom to the top. Signal strength is the strength of the last message received
that was addressed to this station.
LED
Signal Strength
LED
Signal Strength
D1
More than -85 dBm
RX
More than -100 dBm
D2
More than -90 dBm
CF
More than -105 dBm
D3
More than -95 dBm
PG
Always on during RSSI test
Output LED flashing quickly
If an output is in communication failure, the corresponding LED flashes at 5 Hz.
D1
Relay Output D1 is in communication failure.
D2
Relay Output D2 is in communication failure.
D3
Relay Output D3 is in communication failure.
PG
Analog output is in communications failure.
SMA Antenna Connector at Top of Unit
RS232 Configuration Port
Indicator LEDs
RSSI Push-Button
