MD‑SI‑DP1 Communication
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8.8 Fault Diagnosis
8.8.1 Troubleshooting
The following table describes the faults that may occur during use of the MD‑SI‑DP1
expansion card and the AC drive.
Symptom
Solution
After the AC drive is powered on,
only the power indicator (D4) is
on, indicating that communication
between the MD‑SI‑DP1 expansion
card and the AC drive is not
established.
1. Check that F0‑28 is set to 1.
2. Check the AC drive type. This user guide only
describes the usage of MD520. For other AC drive
models, contact the technical engineers to obtain the
correct user guide.
3. Check whether the AC drive software version
supports the MD‑SI‑DP1 card.
After the AC drive is powered on,
the power indicator (D4) is on and
the indicator of communication
with the AC drive (D2) blinks.
Set the station number correctly (within the range of
1 to 125). Note that digit 8 of the DIP switch is the
least significant bit of the address.
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