YASKAWA GA700 Technical Manual page 735

High performance type; 200 v class: 0.4 to 110 kw; 400 v class: 0.4 to 355 kw

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• Do not mount the communication option in slave drives when using the gateway mode.

• Doing so may disrupt synchronization of drive commands and responses.

• Response speed using the communication option is slower than when using point-to-point communications.

• Make sure H5-03 [Communication Parity Selection] is set to the same value on both the master drive and slave drives.

The following example illustrates the parameter settings when connecting four slave drives.

(Slave Drive

(Slave Drive

(Slave Drive

(Slave Drive

Configure the number of connected slave drives.

Make sure the communications speed and communications parity are set to the same value on both the master drive and slave drives.

Do not change the value of H5-06 from the default value to correctly detect the response timeout.

Set H5-09 to a value of at least 0.9 seconds. When configured such that H5-09 < 0.9, CE will be detected before the response timeout

is detected.

Set the run command and frequency reference source on slave drives to MEMOBUS/Modbus communications.

• The master drive stops transmitting to the slave drives when timeouts or message errors occur consecutively for 10 times. Input the

fault reset command to restart communication.

• If the access command is changed before the MEMOBUS/Modbus access completion flag turns on, the previous command may not be

YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual

At least 2.0

At least 0.9

At least 0.9

At least 0.9

At least 0.9

11.7 F: Options

Selection 1]

Troubleshooting