TECO A510-2001-H - Page 254

4-200
Table 4.3.17 Speed limit input method
Input method Input terminal
Related
parameter
setting
Description
21-02=0 Analog input (AI1 or AI2) as speed limit
00-05=1
Analog input (AI1 or AI2 is set by 04-05 ) as reference
frequency input
Voltage input
(-10V – 10V)
AI1
04-00=2,3
Terminal AI1 signal level : -10V - 10V
(if the speed limit is plus value, set 04-00=0, 1)
21-02=0 Analog input (AI1 or AI2) as speed limit
00-05=1
Analog input (AI1 or AI2 is set by 04-05 ) as reference
frequency input
04-00=0,2 Terminal AI2 signal level : 0V - 10V
Voltage input
(10V - 10V)
AI2
(SW2=” V ”)
04-05=12 AI2 will be added to terminal AI1 as speed limit value
21-02=0 Analog input (AI1 or AI2) as speed limit
00-05=1
Analog input (AI1 or AI2 is set by 04-05 ) as reference
frequency input
04-00=1,3 Terminal AI2 signal level : 4 – 20mA
1
Current input
(4 - 20mA)
AI2
(SW2=” I ”)
04-05=12 AI2will be added to terminal AI1 as speed limit value
21-02=1 Set the speed limit to be controlled by 21-03
2
Parameter 21-03
setting
─
21-03 Set speed limit
─The rotation direction of speed control is depended on the speed limit signal:
.Positive voltage: Forward , speed limit (21-03+21-04).Reversal speed limit is zero
or reversal direction (-21-04).
.Negative voltage: Reversal, speed limit (-21-03-21-04). Forward , speed limit is zero
or forward direction (21-04）.
─If the speed limit bias is set to 0, the motor speed will be limited to 0 when the rotation
direction of motor and the speed limit are reverse. For example, the speed limit signal
is a positive voltage and the motor is forward operation, then the effective range of
torque control is from 0 to the speed limit value of forward direction.
(4) Speed limit bias setting (21-04).
.Speed limit bias (21-04) is used to adjust the boundary of the speed limit.
.Speed limit bias (21-04) can set the forward and reversal direction of the motor to
the same limit value.
Set the percentage of the maximum output frequency (01-02) to the speed limit
bias.
Example 1- Set 30% of the forward and reverse speed limit
Figure 4.3.122 Speed limit setting
Example 2 – Settings: 1. Speed limit value（21-03）=100％（positive speed limit）
2. Speed limit bias（21-04）=20％
. The speed range of the torque control is from -20% (21-04) to 120% (21-03
+21-04)