LED Panel

The BMXSAI0410 analog input module presents the following LED panel on its front face:

1 Module state LEDs

2 Channel state LEDs

3 Channel detected error LEDs

NOTE:

  • The channel detected error LEDs are operational only after the module has been properly configured. When a channel error is detected, the corresponding LED remains ON until the underlying condition is resolved.

  • Because the input module includes only four channels, LEDs in positions 4...7 are not used and are never powered on.

Module Diagnostics

Use the four LEDs at the top of the LED panel to diagnose the condition of the BMXSAI0410 analog input module:

Module LEDs

Module State

Recommended Response

Run

Err

I/O

LCK

Blinking1

Blinking1

Blinking1

Blinking1

Auto-test at power-on.

–

Blinking1

ON

OFF

Blinking1

Auto-test at power-on has detected an internal error on input channels.

Replace the module.

OFF

ON

OFF

OFF

Internal error detected.

Replace the module if the condition persists.

OFF

Blinking1

OFF

X

Non-configured I/O module.

Configure the module via the CPU.

X

X

ON

X

External error detected on input channel.

Refer to Channel Diagnostics (below).

ON

Blinking1

X

X

No communication between CPU and I/O module.

Verify that:

  • The CPU is an M580 safety CPU and that it is operational.

  • The backplane is operational (if I/O module is on main rack).

  • The cable between the CPU and I/O module is operational and properly connected (if the I/O module is on an extended or remote rack).

ON

Flickering2

X

OFF

Communication not safe and configuration unlocked.

Debug the condition using the DDDT variables for the I/O module instance.

ON

Flickering2

X

ON

Communication not safe and configuration locked.

Verify that:

  • The locked configuration in the module is equal to the module configuration stored in application in the CPU as configured using Control Expert.

  • Debug the condition using the DDDT variables for the I/O module instance.

ON

ON

OFF

X

Input channel Internal error detected

Replace the module if the condition persists.

ON

OFF

OFF

OFF

Communication with CPU is OK and the configuration is unlocked.

–

ON

OFF

OFF

ON

Communication with CPU is OK and the configuration is locked.

–

X indicates the LED state can be either ON or OFF.

1. Blinking: 500 ms ON / 500 ms OFF.

2. Flickering: 50 ms ON / 50 ms OFF.

Channel Diagnostics

Use all the LEDs on the BMXSAI0410 analog input module to diagnose channel status:

Module LEDs

Channel LEDs

Channel State

Recommended Response

Run

Err

I/O

LCK

Channel State (LED 0...3)

Detected Error (LED 0...3)

ON

OFF

Off

X

ON

OFF

The input current is in the range 4...20 mA on the channel.

–

ON

OFF

ON

X

OFF

OFF

The input current is out of the range 4...20 mA on the channel.

Verify that the external power-supply, the external cabling, and the sensor are operational.

ON

ON

OFF

X

OFF

ON

The channel is not operational.

Replace the module if the condition persists.

X indicates the LED state can be either ON or OFF.