Rio Connection Error; Parameter Compare Error; Sfty Obsrvation: Cmd Spd Err; Sfty Obsrvation: Fb Pos Err - Mitsubishi Electric M800 Series Manual

M800/M80/E80/C80 Series Alarm/Parameter Manual
4 MCP Alarms (Y)
Y15

RIO connection error

Details
RIO station number is too large
Although a non-RIO2.0 unit is connected, 9 or a greater number is set as a station No.
Remedy
If a non-RIO2.0 unit is connected, set the station No. to be 8 or smaller.
If you use 9 or a greater station No., do not connect a non-RIO2.0 unit.
Y15 RIO connection error
Details
RIO3 connection error
A non-RIO2.0 unit is connected to RIO3.
Remedy
Connect a RIO2.0-compatible or RIO2.0-dedicated unit.
Y15 RIO connection error
Details
RIO communication processing time exceeded (PC medium speed)
Due to too short DI/DO refresh cycle, the control may not refresh all the DI/DOs connected to one RIO channel
at a time.
Remedy
Correct the setting of "#1334 DI/DO refresh cycl(DI/DO refresh cycle)".
Connect the remote IO units to RIO1, RIO2 and RIO3 dispersedly to reduce the number of RIO stations
connected per RIO channel.
Y15 RIO connection error
Details
RIO communication processing time exceeded (PC high speed)
Due to too short DI/DO refresh cycle, the control may not refresh all the DI/DOs connected to one RIO channel
at a time.
Remedy
Connect the remote IO units to RIO1, RIO2 and RIO3 dispersedly to reduce the number of RIO stations
(which perform high-speed input/output) per RIO channel.
Y20

Parameter compare error

Details
The speed monitoring parameter in the NC does not correspond to the parameter transmitted to the drive unit.
The name of the axis with an error is displayed.
Remedy
The NC or the servo drive unit may be damaged.
Contact the service center.
Y20

Sfty obsrvation: Cmd spd err

Details
The speed exceeding the speed set with the parameter was commanded during the speed monitoring mode.
The name of the axis with an error is displayed.
Remedy
Check the speed monitoring parameter and the sequence program.
Restart the NC.
Y20

Sfty obsrvation: FB pos err

Details
The commanded position, transmitted to the servo drive unit from NC, is totally different from the feedback po-
sition received from the servo drive unit during the speed monitoring mode.
The name of the axis with an error is displayed.
Remedy
The NC or the servo drive unit may be damaged.
Contact the service center.
IB-1501279-H
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(Error channel)
(Error channel)
(Error channel)
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(Axis name)
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