Yaskawa AC Drive Z1000 AC Drive Bypass for HVAC - Manual (Page 6)

Setting 1: Zero Speed
The output closes when the output frequency or motor speed falls below the minimum output frequency set to E1-09 or b2-01.
Status Description
Open Output frequency is above the minimum output frequency set to E1-09 or b2-01
Closed Output frequency is less than the minimum output frequency set to E1-09 or b2-01
OFF
Output frequency
or
motor speed
Zero Speed
ON
E1-09 (Max. Output Frequency) or
b2-01 (Zero Speed Level)
Figure i.2 Zero-Speed Time Chart
Setting 2: Speed Agree 1 (f
ref
/f
out
Agree 1)
The output closes when the actual output frequency or motor speed is within the Speed Agree Width (L4-02) of the current
frequency reference regardless of the direction.
Status Description
Open Output frequency or motor speed does not match the frequency reference while the drive is running.
Closed Output frequency or motor speed is within the range of frequency reference ±L4-02.
Note: Detection works in forward and reverse.
L4-02
L4-02
Frequency
reference
Speed agree 1 ON OFF
Output Frequency
or Motor Speed
Figure i.3 Speed Agree 1 Time Chart
Setting 3: User-Set Speed Agree 1 (f
ref
/f
set
Agree 1)
The output closes when the actual output frequency or motor speed and the frequency reference are within the speed agree
width (L4-02) of the programmed speed agree level (L4-01).
Status Description
Open Output frequency or motor speed and frequency reference are not both within the range of L4-01 ±L4-02.
Closed Output frequency or motor speed and the frequency reference are both within the range of 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.
i.2 New Parameters and New Monitor
6 YASKAWA TOEP YAISUP 06A YASKAWA AC Drive – Z1000 Bypass Manual Supplement