Yaskawa VS-626 MC5 - Manual (Page 195)

7.3 Common Functions
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D The settings in the torque detection selection constants (L6-01 and L6-04) determine whether overtor-
que conditions will be detected and what kind of processing will be performed if a overtorque condi-
tion is detected.
D L6-01/L6-04 Settings
Setting Function Display
0 Overtorque detection disabled Overtorque detection 1 Overtorque output 2
1
Detect only during speed agree. Continue
operation even after detection. (Minor
fault)
“OL3” blinks “OL4” blinks
2
Detect overtorque at any time. Continue
operation even after detection. (Minor
fault)
“OL3” blinks “OL4” blinks
3
Detect only during speed agree. Stop out-
put after detection. (Fault
) “OL3” lights “OL4” lights
4
Detect overtorque at any time. Stop output
after detection. (Fault)
“OL3” lights “OL4” lights
D When overtorque detection is enabled, be sure to set the overtorque detection level (L6-02 or L6-05)
and the overtorque detection time (L6-02 or L6-05). An overtorque condition is detected when the cur-
rent exceeds the overtorque detection level for longer than the overtorque detection time.
D The overtorque detection level is set as a percentage of the motor rated torque.
D Any of the following functions can be set in a multi-function output (H2-01, H2-02, or H2-03) to indi-
cate fact that an overtorque condition has been detected.
S Setting B: Overtorque detection 1 (NO) S Setting 18: Overtorque detection 2 (NO)
S Setting 17: Overtorque detection 1 (NC) S Setting 19: Overtorque detection 2 (NC)
Motor current
(Output torque)
L6-02 or L6-05
Overtorque Detection 1 (N.O.)
or Overtorque Detection 2
(N.O.)
ON
L6-03
or
L6-06
ON
L6-03
or
L6-06
* The overtorque detection is cleared when the current drops about 5% of the
Inverter’s rated current (or the motor’s rated torque).
Fig
7.33 Timing Chart for Overtorque Detection
J Hardware Protection Settings: L8-01 to L8-03, L8-05, L8-07
Protection Selection for Internal DB Resistor: L8-01
User
Change
during Setting Factory
Valid Access Levels
User
Constant
Number
Name
during
Opera-
tion
Setting
Range Unit
Factory
Setting Open Loop
Vector
Flux Vector
L8-01
Protect selection for in-
ternal DB resistor
0 to 3 -- 0 B B
D Settings
Setting Function
0 Disabled. (Select 0 when a braking resistor isn’t being used or a Braking Resistor Unit is being
used.)
1 Enabled. (Protects the braking resistor from overheating.)
2 3%ED
3 10%ED
7