Sanyo Denki SANMOTION 3E S, Instruction Manual, Page: 394 / 488

11. Selection
11-9
11.2.4 Cautions on load conditions
■
Negative load
Servo amplifier cannot operate with negative load such that motor is continuously driven by load
for more than
several seconds.
[e.g.]
・ Downward driving force of motor (No counterweight)
Please contact us to apply this system to negative load.
■
Load mass (ML)
When using this system in the situation that load mass (ML) is too large compared to mover
mass, main circuit power supply overvoltage detection or regenerative error can be activated
when decelerating.
In this case, the following processes are needed. Please contact us for the details.
(1) Decrease force limit.
(2) Lengthen acceleration time (slow down)
(3) Decrease maximum velocity in use.
(4) Install external regenerative resistor (optional).