Yaskawa AC Drive Z1000 AC Drive HVAC Fan - Manual (Page 38)

If parameter b5-01 is set to 1 or 2, the frequency reference in b1-01 or one of the inputs listed in Table 1.8 becomes the PI
setpoint.
If b5-01 is set to 3 or 4, then the PI setpoint can be input from one of the sources listed in
Table 1.8 .
Table 1.8 PI Setpoint Sources
PI Setpoint Source Settings
Analog Input A1 Set H3-02 = C
Analog Input A2 Set H3-10 = C
MEMOBUS/Modbus Register 0006 H Set bit 1 in register 000F H to 1 and input the setpoint to register 0006 H
Parameter b5-19 Set parameter b5-18 = 1 and input the PI setpoint to b5-19
Note: A duplicate allocation of the PI setpoint input will cause an oPE alarm.
n PI Feedback Input Methods
Input one feedback signal for normal PI control or input two feedback signals for controlling a differential process value.
Normal PI Feedback
Input the PI feedback signal from one of the sources listed below:
Table 1.9 PI Feedback Sources
PI Feedback Source Settings
Analog Input A1 Set H3-02 = B
Analog Input A2 Set H3-10 = B
Note: A duplicate allocation of the PI feedback input will cause an oPE alarm.
Differential Feedback
The second PI feedback signal for differential feedback can come from the sources listed below. The differential feedback
function is automatically enabled when a differential feedback input is assigned.
Table 1.10 PI Differential Feedback Sources
PI Differential Feedback Source Settings
Analog Input A1 Set H3-02 = 16
Analog Input A2 Set H3-10 = 16
Note: A duplicate allocation of the PI differential feedback input will cause an oPE alarm.
1.2 b: Application
38 YASKAWA ELECTRIC SIEP YAIZ1U 03A YASKAWA AC Drive – Z1000 Programming Manual