Specifications

Machine Protection
6-45
" Changing Stall Prevention Level during Operation Using an Analog Input
If you set H3-09 (Multi-function Analog Input Terminal A2 Function Selection) or H3-05 (Multi-function
Analog Input Terminal A3 Function Selection) to 8 (stall prevention level during run), you can change the stall
level during operation by setting H3-10 (Gain (Terminal A2)) and H3-11 (Bias (Terminal A2)) or H3-06 (Gain
(Terminal A3)) and H3-07 (Bias (Terminal A3).
The stall prevention level during operation enabled is the multi-function analog input terminal A2 or A3 input
level or the set value in parameter L3-06, whichever is the smaller.
Fig 6.37 Stall Prevention Level during Operation Using an Analog Input
" Detecting Motor Torque
If an excessive load is placed on the machinery (overtorque) or the load is suddenly lightened (undertorque),
you can output an alarm signal to multi-function output terminal M1-M2, M3-M4, M5-M6, P3-C3, or P4-C4.
To use the overtorque/undertorque detection function, set B, 17, 18, 19 (overtorque/undertorque detection NO/
NC) in one of the following parameters: H2-01 to H2-05 (multi-function output terminals M1-M2, P1-PC, P2-
PC, P3-C3, and P4-C4 function selection).
The overtorque/undertorque detection level is the current level (Drive rated output current 100%) in V/f con-
trol, and the motor torque (motor rated torque 100%) in vector control.
INFO
If the motor capacity is smaller than the Drive capacity or the motor stalls when operating at the factory set-
tings, lower the stall prevention level during operation.
Stall prevention level during operation
Multi-function analog input
terminal A2, A3 input level
(4 mA) (8.8 mA) (20 mA)