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(2) Elementary
Diagram
)
,0v,
1-10
1 RR
()
.,2
TYPE
J USP-RG00[:]
Fig. 3.32
Elementary
Diagram of Regenerative
Unit
(3) Connection
See Fig.
3.3.
(4) Precautions in Use
• When
the protection device has been actuated
(a) Installation
approx 0.5 seconds afterpower is applied.
Cause:
Power
transistor
failure for regeneration
Frequent
start/stop operation of the regenerative
(short circuit failure) or disconnection of wire-
unit results
in high
temperature.
Components
having
low heat-resistance
should
not be installed
wound
resistor
for regeneration
within 150 mm
of the resistor unit.
• Action:
Check
the power
transistor and the
resistor.
If any
trouble
is found,
replace
it.
(b) Procedures
when
the protection device has
LED
(red) in the regenerative
unit lights
been actuated
while power is applied. It does not indicate
• When
the protection
device
has been
actuated
alarm status.
while
braking.
Cause:
Regenerative
processing
shortage
due
to very
large
load
inertia
Action:
Connect
an additional
resistor
(installed
separately)
between
terminals
(_
and (_) on
the regenerative
unit.
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