YASKAWA A1000 Technical Manual page 252

5.7 H: Terminal Functions
Setting 15: Frequency detection 3
Output opens when the output frequency or motor speed (CLV, CLV/PM) rises above the detection level set in L4-03 plus
the detection with set in L4-04. The terminal remains open until the output frequency or motor speed falls below the level
set in L4-03. As the detection level L4-03 is a signed value, the detection works in the specified direction only.
Status
Open Output frequency or motor speed exceeded L4-03 plus L4-04.
Closed Output frequency or motor speed is below L4-03 or has not exceeded L4-03 plus L4-04 yet.
Figure 5.76
Frequency
detection
<1> This is the time chart when L4-07 (Speed Agree Detection Selection) is set to 1 (detection always enabled). The default
setting for L4-07 is 0 (no detection during baseblock). When L4-07 = 0, the terminal opens during baseblock.
Refer to L4-03, L4-04: Speed Agreement Detection Level and Detection Width (+/-) on page 289
Setting 16: Frequency detection 4
Output closes whenever the output frequency or motor speed (CLV, CLV/PM) is above the detection level set in L4-03.
The terminal remains closed until the output frequency or motor speed falls below L4-03 minus the setting of L4-04. As
the detection level L4-03 is a signed value, frequency detection works in the specified direction only.
Status
Open Output frequency or motor speed is below L4-03 minus L4-04 or has not exceeded L4-03 yet.
Closed Output frequency or motor speed exceeded L4-03.
Figure 5.77
Frequency
Detection 4
Refer to L4-03, L4-04: Speed Agreement Detection Level and Detection Width (+/-) on page 289
252
Output Frequency
or Motor Speed
ON OFF
3<1>
Figure 5.76 Frequency Detection 3 Example with a Positive L3-04 Value
Output Frequency
or Motor Speed
OFF
ON
Figure 5.77 Frequency Detection 4 Example with Positive L3-04 Value
Description
L4-04
L4-03
Description
L4-04
L4-03
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
for more details.
for more details.