Exception Response - Delta Electronics AC Drive VFD-F Series User Manual

VFD-F Series
Content Address
2102H
2103H
2104H
2105H
2106H
2107H
2108H
2109H
210AH
210BH
210CH
210DH
210EH
220FH

3.6 Exception response

The AC 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 AC motor drive does not receive the messages due to a communication error; thus, the AC
motor drive has no response. The master device will eventually process a timeout condition.
The AC 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 AC 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:
ASCII mode
STX
Address
Function
Exception code
LRC CHK
END
Frequency command (F)
Output frequency (H)
Output current (AXXX.X)
DC-BUS Voltage (UXXX.X)
Output voltage (EXXX.X)
Output power factor (n)
Output power (XX. XXKW)
Feedback signal actual value
Feedback signal (XXX.XX %)
Estimated torque ratio (XXX.X)
User Target Value (Low bit) uL 0-99.99
User Target Value (High bit) uH 0-9999
PLC time
Reserved
':'
'0'
'1'
'8'
'6'
'0'
'2'
'7'
'7'
CR
LF
Function
Address
Function
Exception code
CRC CHK Low
CRC CHK High
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RTU mode
01H
86H
02H
C3H
A1H