49
Fn32:
Constant speed stall trip prevention deceleration time
(0.1-800 sec.)
When inverter runs in constant speed, if the current increases over 90% of OC level (CC 204-275
and CC 407-475) or over
Fn31
enable level (CC 2110-2220 and CC 4110-4220), and output fre-
quency exceeds the frequency of
Fn31
(for CC 204-275 and CC 407-475 only, there is no such limit
for CC 2110-2220 and CC 4110-4220) Inverter will decelerate to prevent trip.
Fn32
is used to set
the deceleration time.
Fig. 5.3p Constant speed stall prevention
Fn33
: Automatic alternative acceleration and deceleration time selection, 'Quick Change'
function.
This function automatically selects the secondary alternative acceleration or deceleration times
during the following operation modes:
1) Plugging - 'Quick Change'
2) First speed to stop transition - 'Rapid Stop'
3) Both plugging and first speed to stop.
Fn33=0
Normal operation - not active.
Fn33=1
'Quick Change' reverse plugging enabled.
Fn33=2
'Rapid Stop' enabled.
Fn33=3
Both 'Quick Change' and 'Rapid Stop' enabled.
Fn49=
Secondary acceleration time.
Fn50=
Secondary deceleration time.
Fig. 5.3r
Fig. 5.3q
Fn34
: Auto restart interval
(0-800 sec.)
Refer to
Fn35
for operation details.
Fn35
: Auto restart times
(0-10 times)
Fn34
and
Fn35
are used for auto restart. Two separate methods of operation are available.
1. "SPEED SEARCH"
Fn34=0
,
Fn35=1-10
The inverter will attempt a restart 0.5 sec. after a trip caused by any of the following protection
functions: OC-A, OC-C, OV-C, LV-C, OH-C.
The inverter will match the speed of the tripped motor - that is "Speed search" then accelerate the
motor to the preset speed reference.
Fn35
sets the number of restart attempts and can be set to 1-10 times.
Fn02
Fn50
