
B–65162E/03
5. INSTALLATION
121
For detailed notes on the safety circuits, refer to the following document:
A–71429–S13J : Safety Circuit Requirements and Configuration
Examples
To obtain this document, contact your local FANUC office.
Some amplifier models are certified as conforming to standards, with the
load reduction factors shown below being set.
If such an amplifier is used with a load factor exceeded, the allowable
temperature range of a component may be exceeded, which may cause an
overheat alarm or a decrease in the component life. Therefore, use the
amplifier within the decrease characteristic.
(1) Power supply module time rating decrease with temperature
See Fig. 5.4.6 (a).
(2) Servo amplifier module time rating decrease with temperature
See Fig. 5.4.6 (b).
(3) Spindle amplifier module time rating decrease with temperature
See Fig. 5.4.6 (c).
Ambient temperature (_C)
Allowable t ime for
cont inuous output (m inutes)
Fig.5.4.6 (a) Decreasing Curve of Power Supply Module Time
Rating Dependent on Temperature
5.4.6
Decrease in Load
Factor for Given
Ambient Temperature