YASKAWA Varispeed f7, Programming Manual

Page: 82 / 202

Programming 74
.
Fig. 45 Timing Diagram of Accel / Decel Time Change
Function: External Baseblock N.O.
Setting: 8
Function: External Baseblock N.C.
Setting: 9
When the Drive is commanded into baseblock, gating of the output transistor stops and output voltage/frequency drops to zero
(motor coasts). The Drive can be forced into a baseblock state by either closing a digital input configured for Ext Baseblk N.O.
(H1-0x= 8) or opening a digital input configured for Ext Baseblk N.C. (H1-0x= 9).
When the baseblock state is removed the speed search function is used to catch the coasting motor and ramp it back to the
commanded speed.
The method of speed search, Current Detection or Speed Estimation, that is utilized when the baseblock input is removed
depends on the setting of parameter b3-01:
If b3-01= “0: SpdsrchF Disable” or “1: SpdsrchF Enable”; Speed Estimation is used
If b3-01= “2: SpdsrchI Disable” or “3: SpdsrchF Enable”; Current Detection is used
Accel/decel Time Selection 1
Multi-function Input
Setting = “7”
Accel/decel Time Selection 2
Multi-function Input
Setting = “1A”
Accel Time Decel Time
Open or not set Open or not set C1-01 C1-02
Closed Open or not set C1-03 C1-04
Open or not set Closed C1-05 C1-06
Closed Closed C1-07 C1-08
Output
Frequency
Accel Time 1
(C1-01)
Decel Time 1* (C1-02)
Accel Time 2 (C1-03)
Decel Time 2*
Decel Time 1*
Time
FWD (REV) Run Command
ON OFF ON
ON
Accel/Decel Time Selection 1
(Terminals S3 to S8, H1-0x = “7”)
* When “deceleration to stop” is selected ( B1-03 = “0”)
(C1-04)
(C1-02)
Accel Time 3
(C1-05)
Decel Time 3* (C1-06)
Accel Time 4 (C1-07)
Decel Time 4*
Decel Time 1*
(C1-08)
(C1-02)
ON
OFF
ON OFF ON
Accel/Decel Time Selection 2
(Terminals S3 to S8, H1-0x = “1A”)
ON