YASKAWA CIMR-MC5A20P4 Instruction Manual page 188

Advanced Operation
7.3.6 Protective Functions: L
7
Minimum Baseblock Time: L2-03
User User
Constant
Name
Number
L2-03
Min. baseblock time
The factory setting depends on the Inverter capacity. The factory setting shown in the table is for a 200
D
V class, 0.4 kW Inverter. (See page NO TAG.)
This setting is used with the speed search and DC injection braking functions.
D
Set the time required for the leakage voltage to dissipate. Increase the setting if an overcurrent (OC)
D
occurs when the speed search or DC injection braking function starts.
Set the baseblock time during winding change. Time for winding change varies according to the set-
D
ting. (For example, lower the setting, and time for winding change is also reduced.) Overcurrent (OC)
might occur if setting is too low.
This setting is valid for speed searches performed after a momentary power loss and regular speed
D
searches.
Voltage Recovery Time: L2-04
User User
Constant
Name
Number
L2-04 Voltage recovery time
Set the time allowed for the normal voltage to be restored after completion of the speed search.
D
For a 200 V class Inverter, this is the time in seconds for voltage to be restored from 0 VAC to 200 VAC.
For a 400 V class Inverter, this is the time in seconds for voltage to be restored from 0 VAC to 400 VAC.
This setting is valid for speed searches after a momentary power loss, regular speed searches, the volt-
D
age changes with energy-saving control, and the voltage changes with baseblock clearing.
Set the voltage recovery time after baseblock during winding change. Ovrevoltage (OV) might occur
D
if setting is too low.
Undervoltage Detection Level: L2-05
User User
Constant
Name
Number
Undervoltage detection
L2-05
level
The values in parentheses are for 400 V class Inverters. (See page NO TAG.)
D
Normally it isn't necessary to change this setting.
D
Use this constant when you want to add an AC reactor and lower the main circuit undervoltage detec-
D
tion level. Be sure to set a main circuit DC voltage value (V) that will detect a main circuit undervol-
tage.
KEB Deceleration Rate L2-06
User User
Constant
Name
Number
L2-06 KEB deceleration rate
The KEB function restores the operating conditions for momentary power loss by applying a frequen-
D
cy deceleration to create inertia energy when a power loss occurs, and thus avoid the power loss.
This function is normally used with film lines and other applications where multiple Inverters are con-
D
nected to the main DC line. Synchronous deceleration for power loss prevents the line from stopping
as the result of speed fluctuations.
The KEB operation is performed using a KEB command (setting of 65 or 66) for a multi-function in-
D
put.
Applicable Capacities
D
200 V class Inverters: 0.4 to 15 kW
400 V class Inverters: 0.4 to 18.5 kW
Change
during during Setting Setting
Unit
Range
Opera-
tion
0.0 to 5.0 s
Change
during during Setting Setting
Unit
Opera- Range
tion
0.0 to 5.0 s
Change
during during Setting Setting
Unit
Opera- Range
tion
150 to 210
(300 to 420) VDC
Change
during during Setting Setting
Unit
Opera- Range
tion
0.0 to 100.0 0.1
- 50
Valid Access Levels
Factory Factory
Open Loop
Setting
Flux Vector
Vector
B B
0.5
Valid Access Levels
Factory Factory
Open Loop
Setting
Flux Vector
Vector
0.3 A A
Valid Access Levels
Factory Factory
Open Loop
Setting
Flux Vector
Vector
190
A A
(380)
Valid Access Levels
Factory Factory
Open Loop
Setting
Flux Vector
Vector
0.0 A A