Mitsubishi Electric FR-F700PJ Series, Инструкция по эксплуатации

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99
Adjustment of the output torque (current) of the motor
4
P
ARAM
ETE
R
S
(7) To further prevent a trip
(Pr.154)
 Set Pr.154 = "11" when the overvoltage protective function (E.OV

) activates during stall prevention operation in an
application with large load inertia. Note that turning OFF the start signal (STF/STR) or varying the frequency signal during
stall prevention operation may delay the acceleration/deceleration start.
(8) Limit the stall prevention operation and fast-response current limit operation according to the
operating status (Pr. 156)

Refer to the following table and select whether stall prevention operation and fast-response current limit operation will be
performed or not and the operation to be performed at OL signal output.

When "Operation not continued for OL signal output" is selected, the fault (stopped by stall prevention) is displayed and operation is stopped.

Since stall prevention is not activated, OL signal and E.OLT are not output.

The settings "100" and "101" allow operations to be performed in the driving and regeneration modes, respectively. The setting "101" disables the fast-
response current limit in the driving mode.

OL signal is not output at fast-response current limit operation.

The fast-response current limit operation is disabled under IPM motor control.
Pr. 156
Setting
Fast-Response
Current Limit


 : Activated

: Not activated
Stall Prevention
Operation Selection

: Activated
 : Not activated
OL Signal
Output
 :Operation
continued
 : Operation
not continued


Pr. 156
Setting
Fast-Response
Current Limit


 : Activated

: Not activated
Stall Prevention
Operation Selection

: Activated
 : Not activated
OL Signal
Output
 :Operation
continued
 : Operation
not continued


Ac
ce
le
ra
tio
n
C
ons
ta
nt
sp
ee
d
De
ce
le
ra
tio
n
Ac
ce
le
ra
tio
n
C
ons
ta
nt
sp
ee
d
De
ce
le
ra
tio
n
0
(initial
value)
     16     
1
    
17
    
2      18     
3      19     
4
    
20
    
5
    
21
    
6      22     
7      23     
8
    
24
    
9      25     
10      26     
11
    
27
    
12      28     
13      29     
14
    
—

30
    
—

15    

—

31     —

100

P
o
w
e
r d
riv
in
g
    
101

P
o
w
e
r d
riv
in
g
    
Regenerat
ion
   
—

Regenerat
ion
   
—

NOTE
 When the load is heavy or the acceleration/deceleration time is short, stall prevention is activated and acceleration/
deceleration may not be made according to the preset acceleration/deceleration time. Set
Pr. 156 and stall prevention
operation level to the optimum values.
 In vertical lift applications, make setting so that the fast-response current limit is not activated. Torque may not be
produced, causing a load drop due to gravity.