Yaskawa FSP Amplifier - Manual (Page 65)

FSP Amplifier User’s Manual Chapter 4: Trial Operation
4-10
4.2. Additional Setup Procedures in Trial Operation
For two equipment configurations, which are delineated in the subsequent
sections, precautionary setup procedures must be followed before starting trial
operation.
4.2.1. Servomotors with Brakes
Use a servomotor with a brake for vertical shaft applications or for the
application of external force to the shaft to prevent rotation due to gravity
or external force during a power loss.
The servo amplifier uses the brake interlock output (/BK) signal to control
the holding brake operation when using servomotors with brakes.
External
force Servomotor
Servomotor
Holding brake
Prevents the
Servomotor from
rotating due to gravity.
Vertical shaft
Shaft with External Force Applied
Note: To prevent faulty operation when using gravity or external force, first make sure that both the servomotor
and the holding brake work properly. When assured that each operates properly, connect the servomotor to
the rest of the equipment to start the trial operation.
The following figure shows wiring for a servomotor with brakes. See 5.4.4
Using the Holding Brake for details on wiring.
FSP Amplifier
M PG
Servomotor with brakes
Encoder
U,V, W
CN 2
Power supply
Single-phase 200V
Single-phase
200V
Magnetic contactor
Brake power supply