5-68
Ch
ap
. 5
FUNCTION C
O
DES
F codes
Torque limiter levels specified via communications link (S10, S11)
The torque limiter levels can be changed via the communications link. Function codes S10 and S11 exclusively reserved for
the communications link respond to function codes F40 and F41.
Switching torque limiters
The torque limiters can be switched by the function code setting and the terminal command
TL2/TL1
("Select torque limiter
level 2/1") assigned to any of the digital input terminals.
To assign the
TL2/TL1
as the terminal function, set any of E01 through E07 to "14." If no
TL2/TL1
is assigned, torque
limiter levels 1-1 and 1-2 (F40 and F41) take effect by default.
Torque limiter (Operating conditions) (H73)
H73 specifies whether the torque limiter is enabled or disabled during acceleration/deceleration and running at constant
speed.
Data for H73
During accelerating/decelerating
During running at constant speed
0
Enable
Enable
1 Disable
Enable
2
Enable Disable
Torque limiter (Frequency increment limit for braking) (H76)
Data setting range: 0.0 to 500.0 (Hz)
H76 specifies the increment limit of the frequency in limiting torque for braking. The factory default is 5.0 Hz. If the
increasing frequency during braking reaches the limit value, the torque limiters no longer function, resulting in an
overvoltage trip. Such a problem may be avoided by increasing the setting value of H76.
The torque limiter and current limiter are very similar in function. If both are activated concurrently, they may
conflict with each other and cause hunting (undesirable oscillation of the system). Avoid concurrent activation of
these limiters.
Summary of Contents for FRENIC-MEGA
Page 36: ...2 6 Unit inch mm Refer to Section 2 3 3 9...
Page 356: ...MEMO...
