Yaskawa Z1000U HVAC Matrix Bypass - Manual (Page 179)

Setting 5: Accel/Decel Time Gain
Adjusts the gain level for the acceleration and deceleration times set to parameters C1-01 through C1-08.
The drive acceleration time is calculated by multiplying the gain level to C1-oo as follows:
C1-oo × Accel/decel time gain = Drive accel/decel time
100%
50%
0 5 V 10 V 1V 2V
20%
10%
Acceleration/deceleration gain from 1 to 10 V
(10 V)
Input Voltage (V)
× 10 (%) =
Figure 5.34 Accel/Decel Time Gain with Analog Input Terminal
Setting 6: DC Injection Braking Current
The current level used for DC Injection Braking is set as a percentage of the drive rated current.
Drive Rated
Current
0
(4)
100%
10 V
(20 mA)
DC Injection Braking Current Level
Figure 5.35 DC Injection Braking Current Using an Analog Input Terminal
Setting 7: Torque Detection Level
Using this setting, the overtorque/undertorque detection level for torque detection 1 (L6-01) can be set by an analog input.
The analog input replaces the level set to L6-02. An analog input of 100% (10 V or 20 mA) sets a torque detection level equal
to 100% drive rated current/motor rated torque. Adjust the analog input gain if higher detection level settings are required.
Refer to L6: Torque Detection on page 190 for details on torque detection.
Setting 8: Stall Prevention Level
Allows an analog input signal to adjust the Stall Prevention level. Figure 5.36 shows the setting characteristics. The drive will
use the lower value of the Stall Prevention level set to L3-06 or the level coming from the selected analog input terminal.
Stall Prevention Level during Run
30%
100%
Analog Input Level
30% 100% 0
Figure 5.36 Stall Prevention During Run Using an Analog Input Terminal
Setting 9: Output Frequency Lower Limit Level
The user can adjust the lower limit of the output frequency using an analog input signal.
Setting B: PID Feedback
Supplies the PID feedback value. This setting requires PID operation to be enabled in b5-01. Refer to PID Feedback Input
Methods on page 143 .
5.7 H: Terminal Functions
YASKAWA SIEP YAIZ1D 01A Z1000U HVAC MATRIX Drive Bypass Technical Manual 179
5
Programming