Fuji Electric FRENIC MEGA G2 Series - Page 442

5.3 Description of Function Codes 5.3.5 H codes (High performance functions)
5-258
H154
H155 to H157
H158
H159
H161
H162
Torque bias (Operation selection)
(Level 1 to 3)
(Mechanical loss compensation)
(Startup timer)
(Shutdown timer)
(Limiter)
Torque bias value is added to the torque command (the output of ASR) before the torque limiter value. As a result
of this, a significant amount of torque can be output with no speed deviation when starting. The torque bias level
can be selected from the analog input value or the three fixed values which are specified with function codes and
switched by the digital input signals “TB1” and “TB2”. Refer to Chapter 8, “Figure 8.7-5 Vector control (torque
command / torque limit) section block diagram” for block diagrams.
The direction of run command and the polarity of the torque bias determine the mode of drive operation
(driving/braking). Refer to the figure below.
 Torque bias (Mode selection) (H154)
This function allows to select the method of torque bias input.
H154 data
Function
0
Disable torque bias (factory default)
1
H155 to H157: Enable levels 1, 2 and 3 selected by digital inputs “TB1”, “TB2”.
2
Enable analog input value.
3
RS-485 communications link (port 1)
4
RS-485 communications link (port 2)
5
Field bus communication
 Set level 1, 2 and 3 (H155 to H157); Select torque bias 1, 2 -- “TB1”, “TB2” (E01 to E05 data = 61, 62)
The torque bias level is selected with terminal “TB1” and “TB2”. This is valid only when H154 = 1.
Input signal
Torque-bias to be selected
“TB2”
“TB1”
OFF
OFF
Disable torque-bias
OFF
ON
H155: Torque bias level 1
ON
OFF
H156: Torque bias level 2
ON
ON
H157: Torque bias level 3
• Data setting range: -300 to +300(%) (motor rated torque reference)
Torque bias +
Torque bias -
Forward
rotation
Reverse
rotation
Driving mode
Braking mode
Braking mode
Driving mode