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FX
-128ASL-M User's Manual
3U
6.2.7
Transmission cable voltage drop detection function
1) Outline
This function detects voltage drop in the external input power supply (24 V DC).
Detection voltage: Approximately 18.6 V
After voltage drop is detected, the transmission clock is forcibly stopped by hardware processing, and
error indication is provided.
2) Description
- When voltage drop is detected, the ALM LED flashes repeatedly at 0.2-second intervals.
- Transmission cable voltage drop error (BFM#28 b3) turns ON.
- The error code "K200" is stored in the latest error code storage area (BFM#29).
- The error code "K4095" is stored in the latest error ID storage area (BFM#10257).
- The transmission is stopped by hardware processing.
*1. If multiple errors occur simultaneously, the error with the highest priority is displayed and stored.
3) How to recover from the transmission cable voltage drop status
How to recover from the transmission cable voltage drop status is as follows.
a) Recover the AnyWireASLINK system from the voltage drop status.
Check the voltage of the 24 V DC external power supply, and replace the power supply or check the
wiring, as necessary.
When the voltage is recovered to the normal status, the following will occur:
- The transmission is restarted by hardware processing.
- The ALM LED keeps ON.
- The transmission cable voltage drop error (b3 of BFM#28) remains in the ON status.
- The error code "K200" remains stored in the latest error code storage area (BFM#29), and the error
code "K4095" remains stored in the latest error ID storage area (BFM#10257).
(If a new error occurs, the old error is overwritten by the latest error in accordance with the priority.)
If the status does not change, the voltage drop has not been fixed. Therefore, check it again.
b) Power OFF the AnyWireASLINK system or turn ON and OFF error flag clear command (BFM#27 b0).
The following will occur:
- The ALM LED turns OFF.
- Transmission cable voltage drop error (BFM#28 b3) turns OFF.
- The error code "K200" stored in the latest error code storage area (BFM#29) is cleared.
- The error code "K4095" stored in the latest error ID storage area (BFM#10257) is cleared.
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6 Introduction of Functions
6.2 Details of functions
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