YASKAWA VS-626M5 Instruction Manual page 123

Adjustment Item and Procedure
(1)
Is speedometer
display correct? (See
note.)
YES
Adjust C1-16 (SM
smaller than current value.
Adjust C1-16 (SM
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
YES
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.
Adjust C1-17 (LM
smaller than current value.
Adjust C1-17 (LM
greater than current value.
Press the DSPL Key to
reset the values.
Press the UP Direction Key.
Adjustment completed
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).
NO
Is meter display NO
greater than motor
speed?
YES
) to
ADJ
) to
ADJ
NO
NO
Is the load factor
display too large?
YES
) to
ADJ
) to
ADJ
6-17
6.5 Speed Control Mode Adjustment Procedure
Details
Speedometer signal adjustment value (C1-16)
(P.U.)
1.5
1.0
0.9
0
0.9 1.0
C1-16 = Actual measured motor speed/Speedometer
display value
Example: When motor speed = 6,000 min
−1
value = 5,940 min , C1-16 = 6,000/5,940 = 1.01
Load factor meter display maximum value (120% of rated torque
for 30 min.)
Load factor meter display maximum value
LM
Capacity
3.7/2.2 202%
5.5/3.7 178%
7.5/5.5 164%
11/7.5 176%
15/11 164%
Signal output for load factor meter adjustment
Load factor me-
ter signal LM
0 V
DATA
>
RESET
ENTER
Load factor meter signal adjustment value (C1-17)
(P.U.)
1.5
1.0
0.9
0
0.9 1.0
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
1.5 (C1−16)
−1
and speedometer display
LM
Capacity
18.5/15 148%
22/18.5 143%
30/22 164%
37/30 148%
45/37 146%
120% rated torque
for 30 min. signal*
DSPL
(C1−17)
1.5
6