Changing Stall Prevention Level During Operation Using An Analog Input; Using Frequency Detection: L4-01 To L4-05 - YASKAWA varispeed G7 CIMR-G7B series Instruction Manual

Changing Stall Prevention Level during Operation Using an Analog Input

If you set H3-09 (Multi-function Analog Input Terminal A2 Function Selection) or H3-05 (Multi-function
Analog Input Terminal A3 Function Selection) to 8 (stall prevention level during run), you can change the stall
level during operation by setting H3-10 (Gain (Terminal A2)) and H3-11 (Bias (Terminal A2)) or H3-06 (Gain
(Terminal A3)) and H3-07 (Bias (Terminal A3).
The stall prevention level during operation enabled is the multi-function analog input terminal A2 or A3 input
level or the set value in constant L3-06, whichever is the smaller.
INFO

Using Frequency Detection: L4-01 to L4-05

Set these constants when outputting one of the frequency agree or frequency detection signals from a multi-
function output. When using flux vector control, the motor speed is detected.
Related Constants
Con-
stant
Number
L4-01
L4-02
L4-03
-50
6
Stall prevention level during operation
(4 mA) (8.8 mA) (20 mA)
Fig 6.39 Stall Prevention Level during Operation Using an Analog Input
If the motor capacity is smaller than the Inverter capacity or the motor stalls when operating at the factory set-
tings, lower the stall prevention level during operation.
Name
Description
Display
Speed agree Set the speed that you want to
detection level detect in Hz.
The set speed is an absolute value,
so the speed is detected in forward
频率检出值
or reverse.
Speed agree
detection width Set the speed detection range in
Hz.
频率检出幅度
Speed agree
Set the speed that you want to
detection level
detect in Hz.
(+/−)
Set positive values for forward,
频率检出值 negative values for reverse.
＋－
Multi-function analog input
terminal A2, A3 input level
Control Methods
Change
Setting Factory during
V/f
Range Setting Opera-
V/f with
tion
PG
0.0 to
0.0 Hz No A A
400.0
0.0 to
2.0 Hz No A A
20.0
−400.0
to 0.0 Hz No A A
+400.0
MEMO
Open Open
BUS
Flux
Loop Loop
Regis-
Vec-
Vector Vector
ter
tor
1 2
A A A 499H
A A A 49AH
A A A 49BH