L4: Speed Detection - YASKAWA AC Drive-A1000 Technical Manual

5.8 L: Protection Functions
Manual Parameter Setup
Calculate parameter L3-25 in the formula below:
n
L3-26: Additional DC Bus Capacitors
Sets the capacity of any additionally installed DC bus capacitors. This data is used in calculations for Single Drive KEB Ride-
Thru 2. Adjust this setting only if external capacity is connected to the DC bus and Single Drive KEB 2 is used.
No.
L3-26
n L3-27: Stall Prevention Detection Time
Sets a delay time from when the Stall Prevention level is reached and the actual Stall Prevention function is activated.
No.
L3-27
u

L4: Speed Detection

These parameters set up the speed agree and speed detection functions that can be assigned to the multi-function output
terminals.
n L4-01, L4-02: Speed Agreement Detection Level and Detection Width
Parameter L4-01 sets the detection level for the digital output functions "Speed agree 1," "User-set speed agree 1," "Frequency
detection 1," and "Frequency detection 2."
Parameter L4-02 sets the hysteresis level for these functions.
No.
L4-01
L4-02
<1> Setting units in Hz when A1-02 = 0, 1, 2, 3, or 5. Setting units in % when A1-02 = 6 or 7.
Refer to H2-01 to H2-03: Terminal M1-M2, M3-M4, and M5-M6 Function Selection on page
n L4-03, L4-04: Speed Agreement Detection Level and Detection Width (+/-)
Parameter L4-03 sets the detection level for the digital output functions "Speed agree 2," "User-set speed agree 2," "Frequency
detection 3," and "Frequency detection 4."
Parameter L4-04 sets the hysteresis level for these functions.
No.
L4-03
L4-04
<1> Setting units in Hz when A1-02 = 0, 1, 2, 3, or 5. Setting units in % when A1-02 = 6 or 7.
Refer to H2-01 to H2-03: Terminal M1-M2, M3-M4, and M5-M6 Function Selection on page
16.
256
L3-25 =
Name
Additional DC Bus Capacitors
Name
Stall Prevention Detection Time
Name
Speed Agreement Detection Level
Speed Agreement Detection Width
Name
Speed Agreement Detection Level (+/-)
Speed Agreement Detection Width (+/-)
Machine Inertia
Motor Inertia
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Setting Range
0 to 65000 μF
Setting Range
0 to 5000 ms
Setting Range
0.0 to 400.0 Hz
0.0 to 20.0 Hz
<1>
0.0 to 40.0%
218, Settings 2, 3, 4, and 5.
Setting Range
-400.0 to 400.0 Hz
0.0 to 20.0 Hz
<1>
0.0 to 40.0%
218, Settings 13, 14, 15, and
Default
0 μF
Default
50 ms
Default
0.0 Hz
Determined by
A1-02
Default
0.0 Hz
Determined by
A1-02