— 2-2 —
Figure 2-1
5 seconds
or more
5 minutes or more
ON
OFF
ON
OFF
Control power
Main power
Remove cover
!
Caution : Using an optional regenerative dump resistor shall be considered for
heavy duty operation .
à
When Motor is decelerating, rotational energy is dissipated by internal
dump resistor. Excessive rotational energy causes very high
regeneration of Motor, the dump resistor is overheated, then the alarms
goes off and Motor stops.
à
Gentler deceleration rate or decreasing duty cycle prevents
overheating of the dump resistor.
à
If heavy duty operation is still needed, installation of optional
“Regenerative Dump Resistor” is recommended. Refer to “Appendix 5”
for the details.
!
Danger : Never apply any water or oil to Driver Unit. Take appropriate measures
to protect Driver Unit from water, oil, slag , dust and corrosive gas.
!
Warning : Do not conduct an “Isolation test” or “Megger test” on Driver Unit. It may
damage the internal circuit.
!
Caution : Be sure to adjust the servo parameters according to conditions of actual
use. In most cases, the Direct Drive Motor System cannot exhibit its full
performance unless the shipping set of these parameters are altered.
Refer to “8. Trial Running and Adjustment” for the details about
parameter setting.
2.2. Version Number
l
Version number applicable to this manual is upgraded to 21 from 11.
l
The number noted on the seal affixed to the Driver Unit is shown below.
<Example of version number>
ESA-LYA2A13-21
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