Yaskawa MP3200 Troubleshooting Manual - Manual (Page 40)

2.3 Rack Expansion Interface Unit Indicators
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2.3 Rack Expansion Interface Unit Indicators
These indicators show the operating status of the Rack Expansion Interface Unit, the communications sta-
tus of the cable, and the error status.
For Main Rack For Expansion Rack
Indicator Color Status When Lit, Flashing, or Not Lit
LKP1 Green
Lit
Communications are active with the Rack Expansion Interface Unit con-
nected to PORT1.
Not lit.
• Communications errors occurred consecutively and communications cannot
be recovered automatically.
• The cable was disconnected or was not connected to the port.
• The current Rack Expansion Interface Unit or another Rack Expansion
Interface Unit connected to it has a hardware failure.
LKP2 Green
Lit
Communications are active with the Rack Expansion Interface Unit con-
nected to PORT2.
Not lit. Same as LKP1.
LKP3 Green
Lit
Communications are active with the Rack Expansion Interface Unit con-
nected to PORT3.
Not lit. Same as LKP1.
ERR Red Lit
• Consecutive communications errors occurred on one of the ports and com-
munications cannot be recovered automatically.
• The cable was disconnected or was not connected. These errors are not
shown on the Main Rack Expansion Interface Unit before the connection is
established.
• The current Rack Expansion Interface Unit or another Rack Expansion
Interface Unit connected to it has a hardware failure.
If communications errors occur consecutively during operation, communications between the Main
Rack and Expansion Rack will stop.
Important