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104 M’Ax User Guide
Issue Number: 4
6. Set parameter 8.64 at 1.
7. Perform the following, as appropriate:
Version _AN
Initiate the save operation by setting parameter XX.00 at 1000.
Execute the operation by performing either of the following:
• While the display is in Edit mode, press at the same time:
•Setparameter
10.38 at 100 (via serial communications)
Version _SL
Version _AN
(if required)
Ensure the Drive is disabled by checking that the
Hardware enable
contact is open or that parameter 6.15 is set at 0, then perform either
of the following:
• Initiate thestore operation by setting parameter
0.50 at 2 (Prog).
Execute the operation by setting parameter
10.38 at 100.
•Set
11.67 Flash update enable at 1.
Figure F-2 Example digital output terminals in use
F.2 Adjusting the threshold for the motor
thermal-overload alarm
A number stated in square brackets, eg. [4.52], represents the value
of the parameter whose number is stated.
1. Read the value(s) of the appropriate parameter(s) in the following
table...
... and enter the appropriate value in
4.53 Symmetrical current limit
after motor thermal-overload alarm. If gains sequencing is being
used, enter the highest of the values that are in use. Note the value
that is entered.
2. Determine the time required for the controller to complete a process
cycle or reduce the speed demand after a motor thermal-overload
alarm has been produced by the Drive. Enter the value of time (in
seconds) in
4.54 Thermal-overload time to trip. Note the value that is
entered.
3. Read and note the value of
4.15 Motor – thermal time-constant.
4. Calculate the time
t
C
that the motor will take to enter thermal
overload when it is operating at the current limit set in
4.53 (after an
overload alarm has been produced), as follows:
5. Calculate the following:
6. Calculate the required value of
4.52 Motor thermal-overload alarm
level as follows:
7. Enter the calculated value into parameter
4.52.
8. Perform the following, as appropriate:
Version _AN
Initiate the save operation by setting parameter XX.00 at 1000.
Execute the operation by performing either of the following:
• While the display is in Edit mode, press at the same time:
•Setparameter
10.38 at 100 (via serial communications)
Version _SL
Version _AN
(if required)
Ensure the Drive is disabled by checking that the
Hardware enable
contact is open or that parameter 6.15 is set at 0, then perform either
of the following:
• Initiate thestore operation by setting parameter
0.50 at 2 (Prog).
Execute the operation by setting parameter
10.38 at 100.
Set
11.67 Flash update enable at 1.
and
DIGITAL I/O
11
Digital output 2
0V COMMON
Interlock circuit
11
Digital output 3
0V COMMON
4
3
AT ZERO SPEED
PID gains-set being
used
Parameter
1 4.07 Symmetrical current limit Kc1
2
4.24 Symmetrical current limit Kc2
3
4.28 Symmetrical current limit Kc3
NOTE
t
c
4.15[]– In 1
2
105
2
4.53[]
-------------------
–
èø
ç÷
æö
×=
t
D
t
C
4.54[]–=
4.52[]4.53[]1e
t
D
4.15[]⁄
–×=
and
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