TECO F33 Series, Instruction Manual, Page: 101 / 192

98 Functional Description
Fig. 83 Jog command
11.3.6 Torques [350]
Menu with all parameters for torque settings.
Maximum Torque [351]
Sets the maximum torque. This Maximum Torque oper-
ates as an upper torque limit. A Speed Reference is
always necessary to run the motor.
Communication information
IxR Compensation [352]
This function compensates for the drop in voltage over
different resistances such as (very) long motor cables,
chokes and motor stator by increasing the output volt-
age at a constant frequency. IxR Compensation is most
important at low frequencies and is used to obtain a
higher starting torque. The maximum voltage increase
is 25% of the nominal output voltage. See Fig. 84.
Selecting “Automatic” will use the optimal value accord-
ing to the internal model of motor. “User-Defined” can
be selected when the start conditions of the application
do not change and a high starting torque is always
required. A fixed IxR Compensation value can be set in
the menu [353].
Communication information
Fig. 84 IxR Comp at Linear V/Hz curve
Default: 120% calculated from the motor data
Range: 0–400%
Modbus Instance no/DeviceNet no: 43141
Profibus slot/index 169/45
Fieldbus format Long, 1=1%
Modbus format EInt
NOTE: 100% Torque means: I
NOM
= I
MOT
. The maximum
depends on the motor current and VSD max current
settings, but the absolute maximum adjustment is
400%.
NOTE: The power loss in the motor will increase by the
square of the torque when operating above 100%. 400%
torque will result in 1600% power loss, which will
increase the motor temperature very quickly.
t
t
f
(NG_06-F18)
Jog
Freq
Jog
com-
mand
T
MOT
Nm
( )
P
MOT
w
( )
x60
n
MOT
rpm
( )
x2
Π
---------------------------------------- =
351 Max Torque
Stp 120%
A
Default: Off
Off 0 Function disabled
Automatic 1 Automatic compensation
User Defined 2 User defined value in percent.
Modbus Instance no/DeviceNet no: 43142
Profibus slot/index 169/46
Fieldbus format UInt
Modbus format UInt
352 IxR Comp
Stp Off
A
10 20 30 40 50 Hz
f
25
%
U
100
IxR Comp=25%
IxR Com=0%