Yaskawa AC Drive Z1000 AC Drive Bypass for HVAC - Manual (Page 7)

Frequency reference
Frequency reference + L4-02
Frequency reference – L4-02
L4-01
L4-01 + L4-02
L4-01 – L4-02
Frequency reference
Frequency reference + L4-02
Frequency reference – L4-02
–L4-01
–L4-01 + L4-02
–L4-01 – L4-02
During
Forward
During Reverse
Output frequency
0 Hz
OFF OFF OFF ON ON ON ON
Output frequency
User Set
Speed Agree 1
Figure i.4 User Set Speed Agree 1 Time Chart
Setting 4: Frequency Detection 1
The output opens when the output frequency or motor speed rises above the detection level set in L4-01 plus the detection
width set in L4-02. The terminal remains open until the output frequency or motor speed fall below the level set in L4-01.
Status Description
Open Output frequency or motor speed exceeded L4-01 + L4-02.
Closed Output frequency or motor speed is below L4-01 or has not exceeded L4-01 + L4-02.
Note: Frequency detection works in forward and reverse. The value of L4-01 is used as the detection level for both directions.
L4-02
Frequency
detection 1
ON OFF
L4-02
L4-01
L4-01
Output Frequency
or Motor Speed
Figure i.5 Frequency Detection 1 Time Chart
Setting 5: Frequency Detection 2
The output closes when the output frequency or motor speed is above the detection level set in L4-01. The terminal remains
closed until the output frequency or motor speed fall below L4-01 minus the setting of L4-02.
Status Description
Open Output frequency or motor speed is below L4-01 minus L4-02 or has not exceeded L4-01.
Closed Output frequency or motor speed exceeded L4-01.
Note: Frequency detection works in forward and reverse. The value of L4-01 is used as the detection level for both directions.
i.2 New Parameters and New Monitor
YASKAWA TOEP YAISUP 06A YASKAWA AC Drive – Z1000 Bypass Manual Supplement 7