Initial commissioning
4–11
1070 066 037-101 (00.02) GB
4.2.10
Torque reduction via digital input signals
During operation, the drive can be changed over to a maximum of 4 different
torque limit values via two digital input signals.
If torque limits have been appropriately selected, this feature can be used to
implement an internal adjustment of the max. active torque.
Input signal
No. 2
No. 1
+24 V
0 V
0 V
0 V
+24 V
0 V
+24 V
+24 V
active torque limit value
S-0-0092
S-3-0092
S-2-0092
S-1-0092
In order to use this function, you have to
use P-0-2000 to assign 2 unused digital inputs to parameter S-0-0217
(parameter set selection)
enter the desired torque limit values into parameters S-0-0092 to
S-3-0092.
drive the two digital inputs externally (e.g. by a PLC).
Assign suitable values to parameters S-0-0092, S-1-0092, S-2-0092 and
S-3-0092 and transmit them to the drive.
We recommend assigning ascending torque limit values to S-0-0092 to
S-3-0092. By this method, you ensure that no excessive torque is acti-
vated in the event of a cable break.
Switch the drive to phase 2.
Assign the value ”S-0-0217” to two unused list positions of parameter list
P-0-2000.
The first entry of ”S-0-0217” assigns input signal no. 1 to the correspond-
ing input.
The second entry of ”S-0-0217” assigns input signal no. 2 to the corre-
sponding input (cf. table above).
Gaps in the assignment should be filled with S-0-0000 (cf. page 4–9).
Transmit the values to the drive.
Switch the drive to phase 4 and test the function.
When both inputs are driven, the drive may only output the maximum torque
set with the above parameters.
To display the statuses at the digital inputs, you may call up the ”Display I/O
signals” function with the menu sequence DIAGNOSE
I/O SIGNALS.
To display the current torque output, you should cyclically display S-0-0084
(torque actual value) in a separate window (cf. section 6.5, page 6–6 ff.).
When the functions are o.k., execute the command ”Save main memory”.
