Yaskawa Matrix Converter - Manual (Page 225)

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* 1. Can be set to 1 or 2 only for the MxC models CIMR-ACA4110 and 4160.
* 2. The default will change when the control method is changed. The Open Loop Vector defaults are given.
* 3. The default depends on the MxC capacity. The value for a 200 V class MxC of 5.5 kW is given.
* 4. Applicable for the Varispeed AC with software versions PRG: 1052 or later.
Multi-Function Digital Inputs (H1-01 to H1-10)
„ Setting Precautions
• When both External Search Commands 1 and 2 are set for the multi-function digital terminals, an OPE03
(invalid multi-function input selection) operation error may occur. Set either External Search Command 1
or External Search Command 2.
• If performing speed search using External Search Commands, add an external sequence so that the period
when the Run Command and External Search Command are both on is at the very least the Momentary
Power Loss Minimum Baseblock Time (L2-03).
• If the MxC output is equipped with a contact, set the contact operation delay time in the Speed Search
Delay Time (b3-05). The default is 0.2 s. When not using the contact, the search time can be reduced by
making the setting 0.0 s. After waiting for the speed search wait time, the MxC starts the speed search.
• Parameter b3-02 is a current detection speed search (current detection level for search completion). When
the current falls below the detection level, the speed search is viewed as completed, and the motor acceler-
ates or decelerates to the set frequency. If the motor cannot restart, lower the set value.
• If an overcurrent (OC) is detected when using speed search after recovery following a power loss, lengthen
the Momentary Power Loss Minimum Baseblock Time (L2-03).
• If a resistor overheat (SOH) is detected when using a current detection speed search, reduce the Current
Suppression Gain During Search (b3-04)
b3-19
Number of Speed
Search Restarts
Sets the number of restarts possible for speed
search restart operations.
0 to 10 1 No A A No
Num of SrchRestr
L2-03
Momentary Power
Loss Minimum
Base Block Time Sets the minimum time to wait to allow the
residual motor voltage to decay before the
MxC output turns back on during power loss
ridethrough. After a power loss, if L2-03 is
greater than L2-02, operation resumes after
the time set in L2-03.
0.1 to
5.0
0.7 s
*3
No A A A
PwrL Baseblock t
L2-04
Momentary Power
Loss Voltage
Recovery Ramp
Time
Sets the time it takes the output voltage to
return to the preset V/f pattern after speed
search (Current Detection Mode) is complete.
0.0 to
5.0
1.5 s
*3
No A A A
PwrL V/f Ramp t
Set
Value
Function
Control Methods
V/f
Open
Loop
Vector
Flux
Vector
61 External Search Command 1 (ON: Speed search from maximum output frequency) Yes Yes No
62 External Search Command 2 (ON: Speed search from set frequency) Yes Yes No
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector