TECO-Westinghouse F510 Series, Instruction Manual

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Table 4.4.16 Torque limit analog input
04-05 (AI2) Function
11 Positive torque limit
12 Negative torque limit
13 Regenerative torque limit (for both forward and reversal directions).
14 Positive/negative torque limit (positive and negative detection torque limit )
Set the analog input terminal (AI2) signal level (04-00), gain (04-07) and bias (04-08)
The default setting for the analog input AI2 is 0 -10V representing 0
– 100% of the motor rated torque).
Fig.4.4.102 shows the relationship between the output torque and the torque limit.
Output Torque (T)
(Positive torque limit, 04-05=11)
Motor Speed (N)
21-06
21-07
21-05
(Positive / negative torque limit, 04-05=14)
I: Forward driving
II: Reverse
regenerating
(Regenerative torque limit, 04-05=13)
(Negative torque limit, 04-05=12)
(Positive / negative torque limit, 04-05=14)
III: Reverse driving
IV: Forward generating
21-08
Figure 4.4.102 Analog input torque limit (AI2)
When the analog input is set to positive torque limit (value = 11) the torque limit is active in the third and
fourth quadrant.in the reverse direction (regenerative torque in the second quadrant).
When the analog input is set to negative torque limit (value = 12) the torque limit is active in the third and
fourth quadrant.
When the analog input is set to regenerative torque limit (value = 13) the torque limit is active in the second
and fourth quadrant can be controlled.
When the analog input is set to positive/negative torque limit (value = 14) the torque limit is active in all four
quadrants.
When the analog input is at maximum (10V or 20mA), the torque limit is 100% of the motor rated torque. In
order to increase the torque limit above 100% the analog input gain (04-07) has to set to a value greater
than 100%. For example: 160.0% of the gain will result in the torque limit of 160% of motor rated torque at
10V (20mA) analog input level.