Yaskawa AC Drive-P1000 Industrial Fan - Manual (Page 168)

For Reverse Acting PID, the PID Feedback must rise above the b5-94 level for the time set in b5-96 in order for the drive to
wake-up.
Wake-up using Setpoint Delta Level (b5-95 = 1)
For Normal Acting PID, the wake-up level is determined by the PID Setpoint minus the b5-94 level. The PID Feedback must
drop below the wake-up level for the time set in b5-96 in order for the drive to wake-up
For Reverse Acting PID, the wake-up level is determined by the PID Setpoint plus the b5-94 level. The PID Feedback must
rise above the wake-up level for the time set in b5-96 in order for the drive to wake-up.
Refer to
Figure 5.19 and Figure 5.20 for detailed diagrams of EZ Sleep/Wake-up functions.
PID Set-point
Run Command
Output Frequency
Wake-up Level <1>
b5 -96
Minimum Speed
(b5-91) <2>
b5 -93 b5 -93
Wake-up
Level
reached
Wake-up
Timer
expired
Sleep
Level
reached
Sleep
Level
reached
Sleep
Timer
expired
Above
Sleep
Level
b5-9 6 b5-9 6 b5-96
Wake-up
Level
reached
Wake-up
Timer
expired
Wake-up
Level
reached
Wake-up
Level
reached
Above
Wake-up
Level
Above
Wake-up
Level
<1> Determined by EZ Wake-up Level (b5-94) and EZ Wake-up Mode (b5-95)
<2> EZ Sleep Level (b 5-92) is left at default (0.0 Hz), thus effectively making b 5-91 the Sleep Level
PID Feedback
Sleeping Sleeping
Figure 5.19 EZ Sleep/Wake-up with Normal Acting PID and b5-92 = 0.0 Hz
Wake-up
Level
reached
Wake-up
Timer
expired
Sleep
Level
reached
Sleep
Timer
expired
Wake-up
Level
reached
Wake-up
Timer
expired
Wake-up
Level
reached
Wake-up
Level
reached
Above
Wake-up
Level
Above
Wake-up
Level
PID Set-point
Run Command
Output Frequency
Wake-up Level <1>
Minimum Speed
(B5-91)
PID Feedback
EZ Sleep Level
(B5-92)
<1> Determined by EZ Wake-up Level (B5-94) and EZ Wake-up Mode (B5-95)
b5-96
b5-93 b5-96 b5-96 b5-96
Sleeping
Figure 5.20 EZ Sleep/Wake-up with Reverse Acting PID and b5-92 > b5-91
n b5-20: PID Setpoint Scaling
Determines the units for the PID Setpoint Value (b5-19) and monitors U5-01 and U5-04.
No. Parameter Name Setting Range Default
b5-20 PID Setpoint Scaling 0 to 3 1
Setting 0: 0.01 Hz
The setpoint and PID monitors are displayed in Hz with a resolution of 0.01 Hz.
5.2 b: Application
168 YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual