ABB ACS580MV, Commissioning Manual, Page: 145 / 150

Preventive Maintenance 145
2. Unplug the optical fiber.
3. Check the ends of the optical fiber. If necessary, clean the fiber ends.
4. Connect the light source to one end and the power meter to the other end of the
optical fiber.
5. Set the light source and the power meter to the appropriate wavelength:
6. Turn on the light source.
7. Measure the attenuation of the optical fiber.
8. Compare the measured values with below table:
9. Replace the optical fibers with unacceptable attenuation.

Communication test
The communication test is to early detect communication problems by using parameters to
control the POF link power between control Hub and Power Modules.
1. Charge the drive, set below two parameters to
Enable to have the half power on
Control Hub and PEBB TX POF link.
•
95.55 Control hub half optical power
•
95.70 PM half optical power
2. Observe the following parameters within 30 minutes:
•
70.12/32/52…, Hub RX comm err count A1/A2/A3 …
•
71.12/32/52…, Hub RX comm err count B1/B2/B3 …
•
72.12/32/52…, Hub RX comm err count C1/C2/C3 …
•
70.5/25/45…, PM RX comm err count A1/A2/A3 …
•
71.5/25/45…, PM RX comm err count B1/B2/B3 …
•
72.5/25/45…, PM RX comm err count C1/C2/C3 …
3. The observed RX comm err counters can have an initial value which may different
from 0, but DO NOT have variation.
4. If any counter variation happens during this test, or “Control hub missing PM” fault
occurs, do as following steps:
•
Check/replace the POF link between the Control Hub and PEBB, repeat the
communication test.
•
In case last step doesn’t solve the problem, replace Control Hub daughter board
which connected to the failed communication link, repeat the communication test.
5. Set parameters 95.55 and 95.70 back to Disable after this test passed.
Setting
Light source 660 nm, dBm, no modulation
Power meter 630 nm, dBm
Value Assessment
> -9 dBm Perfect
> -12 dBm Acceptable
< -12 dBm Not acceptable