Yaskawa Sigma-5 Large Capacity Users Manual: Design and Maintenance-Command Option Interface - Manual (Page 149)

4.6 Other Output Signals
4-53
4
Ope
rat
ion
(1) Signals Output during Servomotor Speed Limit
The following signal is output when the motor speed reaches the limit speed.
Note: Use parameter Pn50F.1 to allocate the /VLT signal for use. For details, refer to 3.4.2 Output Signal Allocations.
(2) Speed Limit Setting
Select the speed limit mode with Pn002.1.
Internal Speed Limit Function
If the internal speed limit function is selected in Pn002.1, set the limit of the maximum speed of the servomo-
tor in Pn407. The limit of the speed in Pn408.1 can be either the maximum speed of the servomotor or the
overspeed alarm detection speed. Select the overspeed alarm detection speed to limit the speed to the maxi-
mum speed of the servomotor or the equivalent.
Note: The servomotor’s maximum speed or the overspeed alarm detection speed will be used when the setting in this
parameter exceeds the maximum speed of the servomotor used.
External Speed Limit Function
If the external speed limit function is selected in Pn002.1, the motor speed is controlled by the speed limit
command. For details, refer to the manual of the connected command option module.
Type
Signal
Name
Connector
Pin Number
Setting Meaning
Output /VLT Must be allocated
ON (closed) Servomotor speed limit being applied.
OFF (open) Servomotor speed limit not being applied.
Parameter Meaning
When
Enabled
Classification
Pn002
n. 0
[Factory setting]
Disables the speed limit reference when torque limit is
used from the command option module. Uses the value
set in Pn407 as the speed limit (internal speed limit
function).
After restart Setup
n. 1
Enables the speed limit reference when torque limit is
used from the command option module (external speed
limit function).
Pn407
Speed Limit During Torque Control
Classification
Setting Range Setting Unit Factory Setting When Enabled
0 to 10000 1 min -1 10000 Immediately Setup
Torque
Parameter Meaning
When
Enabled
Classification
Pn408
n. 0
[Factory setting]
Uses the smaller value of the maximum motor speed
and the value of Pn407 as the speed limit value.
After restart Setup
n. 1
Uses the smaller value of the overspeed alarm detec-
tion speed and the value of Pn407 as speed limit value.