Yaskawa Z1000 AC Drive HVAC - Manual (Page 120)

u Setting 5: Cooling Tower Fan with PI Control Application
Table 4.12 Cooling Tower Fan with PI Control: Parameter Settings
No. Parameter Name Default Setting
b1-03 Stopping Method Selection 1: Coast to Stop
b1-04 Reverse Operation Selection 0: Reverse operation enabled
b2-09 Motor Pre-Heat Current 2 10%
b5-01 PI Function Setting 1: Output frequency = PI output 1
b5-03 Integral Time Setting (I) 30 s
b5-08 PI Primary Delay Time Constant 2 s
b5-09 PI Output Level Selection 1: Reverse Output
b5-13 PI Feedback Low Detection Level 2%
b5-14 PI Feedback Low Detection Time 25 s
b5-15 PI Sleep Function Start Level 10.8 Hz
b5-16 PI Sleep Delay Time 25.5 s
C1-01 Acceleration Time 1 60 s
d2-03 Master Speed Reference Lower Limit 30%
H1-07 Multi-Function Digital Input Terminal S7 Function Selection 60: Motor Pre-Heat 1
L5-01 Number of Auto Restart Attempts 10
L6-01 Stall Prevention Selection during Deceleration 5: UL3 at speed agree (Alarm)
u Setting 6: Pump (Secondary) Application
Table 4.13 Pump (Secondary): Parameter Settings
No. Parameter Name Default Setting
b1-04 Reverse Operation Selection 1: Reverse operation disabled
C1-01 Acceleration Time 1 20 s
d2-03 Master Speed Reference Lower Limit 20%
L5-01 Number of Auto Restart Attempts 10
L6-01 Stall Prevention Selection during Deceleration 5: UL3 at speed agree (Alarm)
u Setting 7: Pump with PI Control Application
Table 4.14 Pump with PI Control: Parameter Settings
No. Parameter Name Default Setting
b1-04 Reverse Operation Selection 1: Reverse operation disabled
b5-01 PI Function Setting 1: Enabled (PI output becomes output frequency reference)
b5-03 Integral Time Setting (I) 15 s
b5-08 PI Primary Delay Time Constant 10.0 s
b5-13 PI Feedback Low Detection Level 2%
b5-14 PI Feedback Low Detection Time 25 s
b5-15 PI Sleep Function Start Level 72%
b5-16 PI Sleep Delay Time 25.5 s
C1-01 Acceleration Time 1 20 s
d2-03 Master Speed Reference Lower Limit 20%
L5-01 Number of Auto Restart Attempts 10
L6-01 Stall Prevention Selection during Deceleration 5: UL3 at speed agree (Alarm)
4.6 Application Selection
120 YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual