Control Related Adjustments - YASKAWA CIMR-ACA4011 Instruction Manual

tain motors with an MxC, open or close the magnetic contactor only when the holding brake is fully closed
and the MxC is in baseblock status with the baseblock signal on.
If the magnetic contactor is opened or closed while the MxC is controlling the motor or during DC Injection
Braking (Zero-speed control), surge voltage or current from the motor by a full-voltage start may cause an
MxC fault.
When a magnetic contactor is installed between the MxC and the motor, set L8-07 (Output Phase Loss Protec-
tion) to 1 or 2 (Enabled).

Control Related Adjustments

The MxC is designed to provide sufficient performance for elevator and hoist type applications. However, if
problems related to controllability should occur such as oscillation or slipping, adjust the following parameters
in accordance with the control method. Only parameters that frequently require adjustment are listed in this
table.
Parame-
Control
ter Num- Name
Method
ber
Mid Output
E1-08 Frequency
Voltage (VC)
Min. Output
Frequency
E1-10
Voltage
(VMIN)
Speed Feed-
back Detec-
n2-01
tion Control
(AFR) Gain
Speed Feed-
Open Loop back Detec-
Vector Con- n2-03 tion Control
trol (A1-02 = (AFR) Time
2) Constant 2
Torque Com-
pensation
C4-02 Primary
Delay Time
Constant
Slip Com-
pensation
C3-02
Primary
Delay Time
Slip Com-
C3-01 pensation
Gain
Table 6.4 Control-Related Adjustments
Factory
Performance
Setting
13.0 VAC
• Improves torque and
speed response at low
speeds
• Controls shock at start
up 2.5 VAC
• Increases torque and
speed response
• Controls hunting and
1.00
oscillation in mid-
range speeds (10 to 40
Hz)
Increases torque and
750 ms
speed response
• Increases torque and
speed response
100 ms
• Controls hunting and
oscillation
• Increases speed
response
200 ms
• Improves speed sta-
bility
Improves speed accu-
1.0
racy
Elevator and Hoist Type Applications
Recom-
mended Adjustment Method
Setting
12.0 to 15.0
*
• Torque or speed response
*
VAC
is insufficient: Increase
the setting
• Shock at startup is large:
2.0 to 3.0
*
Reduce the setting
*
VAC
• Torque or speed response
is insufficient: Reduce the
setting
0.50 to 2.00
• Hunting or oscillation
occurs: Increase the set-
ting
• Speed response is slow
during sudden load
100 to 750 change: Reduce the setting
ms • Hunting or oscillation
occurs: Increase the set-
ting
• Torque or speed response
is insufficient: Reduce the
setting
20 to 200 ms
• Hunting or oscillation
occurs: Increase the set-
ting
• Speed response is slow:
100 to Reduce the setting
500 ms • Speed is not stable:
Increase the setting
• Speed is slow: Increase
the setting
0.5 to 1.5
• Speed is too fast: Reduce
the setting
149
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