38 Unidrive M100-101 Quick Start Guide
Issue Number: 6
8 Diagnostics
Table 8-1 Trip indications
Users must not attempt to repair a drive if it is faulty, nor carry out fault diagnosis other 
than through the use of the diagnostic features described in this chapter.
If a drive is faulty, it must be returned to the supplier of the drive for repair.
Trip 
code
Condition Description
C.Acc NV Media Card Write fail Unable to access the NV Media Card.
C.bt
The Menu 0 parameter 
modification cannot be saved to 
the NV Media Card
The necessary boot file has not been created on the NV media 
card fitted to the drive to take the new parameter value. This 
occurs when Parameter Cloning (00.030) is changed to auto or 
boot mode, but the drive is not subsequently reset. 
C.cPr 
NV Media Card file/data is 
different to the one in the drive
A C.cPr trip is initiated if the parameters on the NV Media Card 
are different to the drive.
C.d.E
NV Media Card data location 
already contains data
Attempt has been made to store data on a NV Media Card in a 
data block which already contains data.
C.dAt NV Media Card data not found
Attempt has been made to access non existent file or block on the 
NV Media Card.
C.Err
NV Media Card data structure 
error
Attempt has been made to access the NV Media Card but an error 
has been detected in the data structure on the card. Resetting the 
trip will cause the drive to erase and create the correct folder 
structure. 
C.FuL NV Media Card full There is not enough space left on the card.
C.Pr
NV Media Card data blocks are 
not compatible with the drive 
derivative
If Drive Derivative is different between the source and target 
drives. Refer to Drive User Guide. 
C.rdo
NV Media Card has the Read 
Only bit set
Attempt has been made to modify a read-only NV Media Card or a 
read-only data block. 
C.rtg
NV Media Card Trip; The voltage 
and / or current rating of the 
source and destination drives are 
different
The current and / or voltage ratings are different between source 
and destination drives. 
C.tyP
NV Media Card parameter set not 
compatible with current drive 
mode
The drive mode in the data block on the NV Media Card is 
different from the current drive mode. 
cL.A1 Analog input 1 current loss
Current loss was detected in current mode on Analog input 1 
(Terminal 2).
Cur.c Current calibration range Current calibration range error.
Cur.O Current feedback offset error Current offset is too large to be trimmed.
d.Ch
Drive parameters are being 
changed
A user action or a file system write is active that is changing the 
drive parameters and the drive has been commanded to enable.
dEr.E Derivative file error Contact the supplier of the drive.
dEr.I Derivative product image error Contact the supplier of the drive.
dESt
Two or more parameters are 
writing to the same destination 
parameter
The dESt trip indicates that destination output parameters of two 
or more logic functions (Menus 7 and 8) within the drive are 
writing to the same parameter.
dr.CF Drive configuration Contact the supplier of the drive.
EEF 
Default parameters have been 
loaded
The EEF trip indicates that default parameters have been loaded. 
The exact cause/reason of the trip can be identified from the sub-
trip number (see Drive User Guide).
Unidrive M100 101 Quick Start Guide English Iss6.book  Page 38  Wednesday, September 9, 2015  4:07 PM