Advanced Operation
7.3.3 Torque Control
7-26
User
Change
Valid Access Levels
Constant
Number
Name
during
Opera-
tion
Setting
Range
Unit
Factory
Setting
V/f
Control
V/f with
PG
Open
Loop
Vector
Flux
Vector
H3-04
Signal level selec-
tion (terminal 16)
×
0, 1 − 0
B B B B
H3-08
Signal level selec-
tion (terminal 14)
×
0to2 − 2
A A A A
D
Settings
Setting Function
0
0 to +10 V input (When H3-08 is being set, be sure to disconnect jumper wire J1.)
1
0to±10 V input (When H3-08 is being set, be sure to disconnect jumper wire J1.)
2
4 to 20 mA input (H3-08 only)
D
Set the proper signal level for the torque compensation that you want to input.
D
The direction of the torque compensation bias is determined by the sign (polarity) of the signal that
is input. It is not determined by the direction of the run command (forward/reverse).
• +Voltage (or current): Forward torque compensation
(generally counter-clockwise; axis side)
• −Voltage: Reverse torque compensation (generally clockwise; axis side)
Since the polarity of the voltage input determines the direction, only forward torque compensation can
be input when the “0 to +10 V” or “4 to 20 mA” signal level has been selected. If you want to input
reverse torque compensation, be sure to select the “0 to ±10 V” signal level.
D
When supplying a voltage input to the frequency reference current input (terminal 14), be sure to dis-
connect jumper wire J1 on the control board. If the jumper wire isn’t disconnected, the input resistor
will be destroyed. Refer to Figure 7.11 for a diagram of the control board.
Adjusting the Gain/Bias of the Analog Inputs: H3-02, -03, -06, -07, -10, -11
D
Adjust the gain and bias for the frequency reference (voltage), frequency reference (current), and mul-
ti-function analog inputs according to the input specifications for each input.
User
Change
Valid Access Levels
Constant
Number
Name
during
Opera-
tion
Setting
Range
Unit
Factory
Setting
V/f
Control
V/f with
PG
Open
Loop
Vector
Flux
Vector
H3-02
Gain (terminal 13)
f
0.0 to
1000.0
% 100.0
B B B B
H3-03
Bias (terminal 13)
f
−100.0 to
+100.0
% 0.0
B B B B
H3-06
Gain (terminal 16)
f
0.0 to
1000.0
% 100.0
B B B B
H3-07
Bias (terminal 16) f
−100.0 to
+100.0
% 0.0
B B B B
H3-10
Gain (terminal 14)
f
0.0 to
1000.0
% 100.0
A A A A
H3-11
Bias (terminal 14)
f
−100.0 to
+100.0
% 0.0
A A A A
D
Adjust the gain so that the maximum signal level corresponds to the maximum frequency or the mo-
tor’s rated torque, as follows.
• When the input terminal is used for frequency reference:
A 10 V (20 mA) input indicates a frequency reference that is 100% of the max. output frequency.
• When the input terminal is used for torque reference:
A 10 V (20 mA) input indicates a torque reference that is 100% of the motor’s rated torque.
• When the input terminal is used for torque compensation:
A 10 V (20 mA) input indicates a torque compensation that is 100% of the motor’s rated torque.
D
Adjust the bias so that the minimum signal level corresponds to the maximum frequency or the motor’s
rated torque, as follows.
•
When the input terminal is used for frequency reference:
A 0 V (4 mA) input indicates a frequency reference that is 100% of the max. output frequency.
• When the input terminal is used for torque reference:
A 0 V (4 mA) input indicates a torque reference that is 100% of the motor’s rated torque.
• When the input terminal is used for torque compensation:
A 0 V (4 mA) input indicates a torque compensation that is 100% of the motor’s rated torque.
7
To Next Page
Loading...
Need help?
General