Yaskawa AC Drive Z1000 AC Drive Bypass for HVAC - Manual (Page 10)

Frequency reference + L4-04
Frequency reference – L4-04
L4-03
L4-03 + L4-04
L4-03 – L4-04
Frequency reference
0 Hz
OFF OFF ON ON
Frequency reference
During
Forward
Output frequency
Output frequency
User Set
Speed Agree 2
Figure i.8 User-Set Speed Agree 2 Example with a Positive L3-04 Value
Setting 15: Frequency Detection 3
The output opens when the output frequency or motor speed 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. The
detection level L4-03 is a signed value; detection works in the specified direction only.
Status Description
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.
L4-04
Frequency
detection 3
ON OFF
L4-03
Output Frequency
or Motor Speed
Figure i.9 Frequency Detection 3 Example with a Positive L3-04 Value
Setting 16: Frequency Detection 4
The output closes when the output frequency or motor speed 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.
Status Description
Open Output frequency or motor speed is below L4-03 minus L4-04 or has not exceeded L4-03.
Closed Output frequency or motor speed exceeded L4-03.
Note: The detection level L4-03 is a signed value; detection works in the specified direction only.
i.2 New Parameters and New Monitor
10 YASKAWA TOEP YAISUP 06A YASKAWA AC Drive – Z1000 Bypass Manual Supplement