YASKAWA VS-656MR5

6.5 Speed Control Mode Adjustment Procedure
6-17
Adjustment Item and Procedure
Details
Adjustment completed
NO
YES
NO
NO
YES
YES
NO
YES
Is speedometer
display correct? (See
note.)
Is meter display
greater than motor
speed?
Adjust C1-16 (SM
ADJ
)to
smaller than current value.
Adjust C1-16 (SM
ADJ
)to
greater than current value.
Turn ON and OFF the forward rotation signal
(FWD) to accelerate and decelerate the Motor.
Is load
factor display during
accel/decel correct?
(See note.)
Turn OFF the FWD signal
to stop the Motor.
Display C1-17 data using
the Digital Operator.
Press the DATA/ENTER
Key and the RESET Key at
the same time.
Turn OFF the FWD signal to
stop the Motor.
Is the load factor
display too large?
Adjust C1-17 (LM
ADJ
)to
smaller than current value.
Adjust C1-17 (LM
ADJ
)to
greater than current value.
Press the DSPL Key to
reset the values.
Press the UP Direction Key.
(1)
Speedometer signal adjustment value (C1-16)
(P.U.)
1.5
1.0
0.9
0
0.9 1.0
1.5
(C1−16)
Load factor meter display maximum value (120% of rated torque
for 30 min.)
Speed ometer signal
C1-16 = Actual measured motor speed/Speedometer
display value
Example: When motor speed = 6,000 min
−1
and speedometer display
value = 5,940 min
−1
, C1-16 = 6,000/5,940 = 1.01
3.7/2.2
5.5/3.7
7.5/5.5
11/7.5
15/11
202%
178%
164%
176%
164%
LM
18.5/15
22/18.5
30/22
37/30
45/37
148%
143%
164%
148%
146%
LM
Capacity Capacity
C1-17 = (120% of rated torque for 30 min.)/Load factor meter display
value
Example: When load factor meter display value = 150% at
7.5 kW/5.5 kW, C1-17 = 164/150 = 1.09
Load factor meter display maximum value
Signal output for load factor meter adjustment
0V
DATA
ENTER
>
RESET
DSPL
Load factor me-
ter signal LM
120% rated torque
for 30 min. signal*
Load factor meter signal adjustment value (C1-17)
(P.U.)
1.5
1.0
0.9
0
0.9 1.0
1.5
(C1−17)
Load factor meter signal
* When CI-38 bit 7 is ON, a 100% continuous rating signal is output.
Note: Analog monitor signal (speedometer and load factor meter) adjustment is not necessary when using the NC system (M5N).
6