3 Startup Procedure and Test Run
YASKAWA ELECTRIC
SIEP C710617 19A YASKAWA AC Drive CR700 Technical Manual
191
*1
Pushing
on the keypad will not reset an alarm.
Multi-Function Digital Output
The following table shows the ON/OFF conditions of the MFDO terminals.
H2-xx
Setting
Value
Name
Description
22
Overload Detection (N.O.)
If the drive detects overload based on the conditions set for Overload
Detection 1 or 2, then this digital output will switch ON.
The digital output will switch OFF when
oL5
is cleared from the keypad
display.
23
Weight Det N.C.
If the drive detects overload based on the conditions set for Overload
Detection 1 or 2, then this digital output will switch OFF.
The digital output will switch ON when
oL5
is cleared from the keypad
display.
■
Overtorque Detection
This function limits drive operation depending on how high the drive torque reference or the output current is in
order to provide mechanical protection to the crane. If the drive detects an overtorque situation, then it displays
oL3 [Overtorque Detection 1]
or
oL4 [Overtorque Detection 2]
on the keypad. You can set 2 levels for overtorque
detection, and 2 types of action to take after detecting overtorque.
Note:
The overtorque detection function is disabled when the Run command source is set to the keypad.
Related Parameters
Table 3.21 Overtorque Detection Parameters
No.
Name
Description
Error Code
S6-01
OverT Detect Operation Select
1
Enables overtorque detection, and sets the conditions for detection as well as
the operation to perform after an overtorque is detected.
oL3
S6-04
OverT Detect Operation Select
2
oL4
S6-02
Overtorque Detection Level 1
Sets the level to trigger an overtorque.
•
V/f Control Mode
Sets the amount of torque that triggers overtorque detection as the motor
rated current is 100%.
•
OLV Control
Sets the amount of torque that triggers overtorque detection as the motor
rated torque is 100%.
-
S6-05
Overtorque Detection Level 2
-
S6-03
Overtorque Detection Time 1
If the motor current and motor torque exceed the value set in
S6-02
for
longer than the time set in this parameter, then Overtorque 1 will be
detected.
oL3
S6-06
Overtorque Detection Time 2
If the motor current and motor torque exceed the value set in
S6-05
for
longer than the time set in this parameter, then Overtorque 2 will be
detected.
oL4
S6-09
Torque Detection Filter Time
Sets the time constant for a primary filter to the torque reference or to the
output current used to detect overtorque.
-
S6-01 and S6-04 Settings
Setting
Value
Detection
Conditions
Type
Operation after Detection
Drive Recovery
Ena
bled
Disa
bled
During
Run
During
speed
agree
ment
0
-
x
-
-
-
-
-
1
x
-
-
x
Alarm
Alarm Only
When the Run command is
OFF and the motor has
stopped, the drive will return
to the state before the fault
was triggered.
2
x
-
x
-