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Chapter 4 ParametersAT |Troubleshooting}| BLD-E1 Series
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3.6 Exception response:
The brushless DC motor drive is expected to return a normal response after receiving
command messages from the master device. The following depicts the conditions when no
normal response is replied to the master device.
The brushless DC motor drive does not receive the messages due to a communication error;
thus, the brushless DC motor drive has no response. The master device will eventually
process a timeout condition.
The brushless DC motor drive receives the messages without a communication error, but
cannot handle them. An exception response will be returned to the master device and an
error message "CExx" will be displayed on the keypad of brushless DC motor drive. The xx
of "CExx" is a decimal code equal to the exception code that is described below.
In the exception response, the most significant bit of the original command code is set to 1,
and an exception code which explains the condition that caused the exception is returned.
Example of an exception response of command code 06H and exception code 02H:
Address Low
Address High
Function Low
Function High
4-90
Address
2120H
Frequency command when malfunction
2121H
Output frequency when malfunction
2122H
Output current when malfunction
2123H
Motor frequency when malfunction
2124H
Output voltage when malfunction
2125H
DC-bus voltage when malfunction
2126H
Output power when malfunction
2127H
Output torque when malfunction
2128H
IGBT Temperature of Power Module at Present Fault
2129H
Input status of multi-function terminal when malfunction
(format is the same as Pr.00-04=16)
212AH
Output status of multi-function terminal when malfunction
(format is the same as Pr.00-04=17)
212BH
Drive status when malfunction (format is the same as 2119H)
2201H
Pr.00-05 user-defined setting
2203H
VR analog input (XXX.XX %)
2204H
ACI analog input (XXX.XX %)
2205H
AVI analog input (XXX.XX %)
2206H
Display temperature of IGBT (
2207H
Reserved
2208H
Digital input state
2209H
Digital output state
ASCII mode:
STX
':'
'0'
'1'
'8'
'6'
Function
o
C)
RTU mode:
Address
Function
Exception code
CRC CHK Low
CRC CHK High
Revision May 2009, 00DE, V0.50
01H
86H
02H
C3H
A1H
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