YASKAWA CIPR-GA50C series Technical Manual page 394

11.11 L: Protection Functions
No.
Name
(Hex.)
L8-15 Drive oL2 @ Low Speed
Protection
(04BB)
L8-18 Software Current Limit
Selection
(04BE)
L8-19 Freq Reduction @ oH
Pre-Alarm
(04BF)
L8-27 Overcurrent Detection
Gain
(04DD)
L8-29 Output Unbalance
Detection Sel
(04DF)
L8-31 LF2 Detection Time
(04E1)
L8-35 Installation Method
Selection
(04EC)
L8-40 Carrier Freq Reduction
Off-Delay
(04F1)
L8-41 High Current Alarm
Selection
(04F2)
L8-51 STPo I Detection Level
(0471)
Expert
L8-52 STPo Integration Level
(0472)
Expert
L8-53 STPo Integration Time
(0473)
Expert
L8-54 STPo Id Diff Detection
(0474)
Expert
L8-55 Internal DB
TransistorProtection
(045F)
394
Description
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the function to decrease drive overload at low speeds to prevent damage to the
main circuit transistor during low speed operation (at 6 Hz or slower) to prevent oL2
[Drive Overloaded].
Note:
Contact Yaskawa or your nearest sales representative before disabling this function
at low speeds. If you frequently operate drives with high output current in low
speed ranges, it can cause heat stress and decrease the life span of drive IGBTs.
0 : Disabled (No Additional Derate)
1 : Enabled (Reduced oL2 Level)
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Set the software current limit selection function to prevent damage to the main circuit
transistor caused by too much current.
0 : Disabled
1 : Enabled
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the ratio at which the drive derates the frequency reference during an oH alarm.
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the PM motor overcurrent detection level as a percentage of the motor rated current
value.
Note:
Parameter A1-02 [Control Method Selection] selects which parameter is the motor
rated current.
• A1-02 ≠ 8[EZOLV]: E5-03 [PM Motor Rated Current (FLA)]
• A1-02 = 8: E9-06 [Motor Rated Current (FLA)]
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the function to detect LF2.
0 : Disabled
1 : Enabled
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the LF2 [Output Current Imbalance] detection time.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the type of drive installation.
0 : IP20/UL Open Type
1 : Side-by-Side Mounting
2 : IP20/UL Type 1
3 : External Heatsink
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the length of time until the automatically reduced carrier frequency returns to the
condition before the reduction.
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the function to cause an HCA [Current Alarm] when the output current is more
than 150% of the drive rated current.
0 : No
1 : Yes
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the STPo [Motor Step-Out Detected] detection level as a percentage of the motor
rated current.
Note:
Parameter A1-02 [Control Method Selection] selects which parameter is the motor
rated current.
• A1-02 = 5 [OLV/PM]: E5-03 [PM Motor Rated Current (FLA)]
• A1-02 = 8 [EZOLV]: E9-06 [Motor Rated Current (FLA)]
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the detection level for STPo [Motor Step-Out Detected] related to the ACR integral
value.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the length of time until the drive detects STPo after it is more than the value of L8-
51 [STPo I Detection Level].
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the Id deviation detection function for STPo [Motor Step-Out Detected].
0 : Disabled
1 : Enabled
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the protection function for the internal braking transistor.
0 : Disable
1 : Protection Enabled
Default
(Range)
1
(0, 1)
1
(0, 1)
0.8
(0.1 - 0.9)
300.0%
(0.0 - 1000.0%)
1
(0, 1)
3
(1 – 100)
0
(0 - 3)
Determined by A1-02
(0.00 - 2.00 s)
0
(0, 1)
0.0%
(0.0 - 300.0%)
1.0
(0.1 - 2.0)
1.0 s
(1.0 - 10.0 s)
1
(0, 1)
1
(0, 1)
YASKAWA SIEPC71061753A GA500 Technical Manual
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