Sanken S06-4A005-B Instruction Manual page 181

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Note: According to the inverter software edition, there may be some alarm numbers beyond the above list of alarm codes.
Communication processing by the inverter
⑹
● If an error is detected in a message from the upper computer, the inverter executes the following processing:
1) ASCⅡ-format message
① Parity error, SUM error, or undefined command code
The inverter returns an error message with the command code "?" and a one-byte communication error code for
DT.
Example) When inverter number is "1"
* 0
DT data too long or short, or data cannot be interpreted
②
The same error processing as ① is executed if a message in data defined by a code is too long or short, or the
received message data cannot be interpreted.
Timeout processing
③
The receive status is terminated forcibly if the entire message cannot be received within 150ms after receiving start
code. The inverter returns communication error code "d".
④ Start code not detected
If data is being received without a correct start code, the above error is reported after a correct start code is detected.
⑤ List of communication error codes
"s": Checksum error
"u": Command code not defined
"d": Abnormality of data length and format
⑥ Other errors
The timeout processing applies to other errors related to message reception from a computer. The computer returns
no response.
2) BINARY-format message
When an error is detected in a received message, the inverter returns an error message to the computer with OP set to
"?" and ST set to 1 (BINARY).
① Abnormality detection item
Parity error, SUM error, undefined command code, or message data too short (receive timeout)
Example) BINARY format
@ IN
Message transmission and reception between inverter and computer
⑺
1） Basics
The serial communication protocol is based on a procedure for an inverter to respond to a computer command.
①
Whenever a command is received from a computer, the inverter returns a response. If the computer sends more
commands to the inverter without waiting for a response from the inverter, the inverter may not work normally.
OCPN Momentary overload during constant speed
OCPD Momentary overload during deceleration
OLA Overload during acceleration
OLN Overload during constant speed
OLD Overload during deceleration
OVA Overload during acceleration
OVN Overload during constant speed
OVD Overload during deceleration
OVP Braking resistor overvoltage protection
GAL1 Disconnection of feedback signal cable (PID control)
GAL2 Overspeed
GAL3 ModBus communication timeout
PONG 24V power supply abnormality
FANL Cooling fan abnormality
Disconnection of PG feedback signal, abnormality of position deviation
PGER
counter
OPNI Missing input phase
OPNO Missing output phase
GNDF Grounding output overcurrent alarm
RYOFF Main relay abnormality
1 ? DT SUM EM
? ST SUM
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