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Items Requiring Particular Attention
When using FP7 MC Unit in combination with Servo Amplifier A6B/A5B, please note the
followings.
Wiring of Power Supply
To avoid influence of noise, keep the power supply systems of servo amplifier and PLC
separate.
Connection of Over Limit Input
• In the system using FP7 MC Unit and Servo Amplifier A6B/A5B, limit switches are connected
to the general-purpose inputs (SI-MON3 and SI-MON4) of Servo Amplifier A6B/A5B to
enable the control by a high-order PLC (FP7 MC Unit).
• The POT/NOT input of the servo amplifier A6B/A5B cannot be used as the limit input of a
high-order PLC (FP7 MC Unit).
• For using the general-purpose inputs of the servo amplifier A6B/A5B (SI-MON3 and SI-
MON4) as the limit input of a high-order PLC (FP7 MC Unit), parameters of the servo
amplifier A6B/A5B and FP7 MC need to be changed. For details, refer to "4.5 Connection of
Limit and Near Home Switches".
Operation when home return operation is performed
For the home return methods which are based on the home position (Z phase) (i.e. DOG
method 1, DOG method 3, Limit method 1, Z phase method and Stop-on-contact method 2),
the home return operation after shifting to the creep speed is controlled by the servo amplifier
A6B/A5B. During this operation, the high-order PLC (FP7 MC Unit) cannot control the
operation. Please design and evaluate the system to avoid any danger even after shifting to
the creep speed.
Items Requiring Particular Attention
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