Yaskawa E7 Drive User Manual - Manual (Page 114)

Programming 5 - 40
Fig 5.31 Analog Input Filter Time Constant Effect on “Noisy” Signal
H3-13 Master Frequency Reference Terminal Selection
Parameter H3-13 allows the programmer to select which analog input will serve as the Speed Command input when
“Terminals” are selected as the Auto Mode Speed source (b1-01= “1: Terminals”), or Terminal is selected as the reference
source for the Hand mode (b1-12= “1: Terminals”). For the A2 analog input to be an effective selection for the
H3-13 parameter, parameter H3-09 must be configured as Aux Reference (H3-09= “2: Aux Reference”).
If H3-09 ≠ 2, then the A1 analog input will be used regardless of the setting of parameter b1-12.
L2 Momentary Power Loss Ride-thru Function
When momentary power loss recovery is enabled (L2-01 ≠0), a speed search is executed to catch the potentially spinning
motor shaft. This speed search will occur regardless of the setting of b3-01 “Speed Search Selection”.
L2-01 Momentary Power Loss Detection Selection
L2-02 Momentary Power Loss Ride-Thru Time
Setting Range: 0.0 to 25.5 Seconds
Factory Default: Model Dependent
The Drive allows different responses to momentary power losses. The setting of L2-01 determines whether the Drive attempts
to restart after a short loss of incoming AC power and for what length of time this capability remains active.
If L2-01= “0: Disabled”, the Drive detects a UV1 fault 15ms after power loss and automatic restarting is disabled. The Drive
cannot restart until the external run command is removed and the UV1 fault is reset.
Setting Description
0 Main Fref= A1(factory default)
1 Main Fref= A2
Setting Description
0 Disabled
1 PwrL Ride Thru t
2 CPU Power Active (factory default)
Internal Analog Input Valve
(Filtered)
Noisy Input
Signal
Analog
Input
Filter
TM_E7_01_07182008.book Page 40 Wednesday, July 23, 2008 2:35 PM