VFD is flashing "200.00"

8

Hey David,

if it says “Timed out”, then there is no connection. I would check/replace the cable. I think the problem can be solved this way easily and you will not despair anymore :slight_smile:

You are right, there is no wire gauge and wire ferrule specification in the S1 Manual, but there is this hit for “AWG”:

Hitachi_S1_Manual__Chapter_9_Communication_protocol__P178
Hitachi_S1_Manual__Chapter_9_Communication_protocol__P178626×972 66.2 KB

Hitachi_S1_Manual__Chapter_9_Communication_protocol__P179
Hitachi_S1_Manual__Chapter_9_Communication_protocol__P179632×977 128 KB

By accident, I had looked into the Hitachi WJ-C1 manual instead.

However, there is a specification for the wire gauge for signal cables and the wire ferrules in the WJ-C1 manual on the page 5-4-7:

Hitachi_S1_Manual__5-4-7__Wire_connection
Hitachi_S1_Manual__5-4-7__Wire_connection637×1011 77.5 KB

Here you see the wire gauges and the wire ferrules specifications.

Hitachi_S1_Manual__5-4-8__Wire_connection
Hitachi_S1_Manual__5-4-8__Wire_connection639×1012 41.7 KB

This is how to insert them into the VFD terminals (on WJ-C1, sorry!).

The RS-485 serial connection is a balanced connection and using a shielded, twisted pair communications cable is recommended.

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