SMC Networks LECSN-T Series - Page 159

5. PARAMETERS
5 - 53
No./
symbol/name
Setting
digit
Function
Initial
value
[unit]
Network
ECT
EIP
PNT
PC29
*COPB
Function
selection C-B
x _ _ _
POL reflection selection at torque mode
Select whether to enable or disable [Pr. PA14 Rotation direction selection/] in the
torque mode. When this parameter is enabled, the polarities of "Target torque
(PNU: 24689)", "Torque demand (PNU: 24692)", "Positive torque limit value (PNU:
24800)", "Negative torque limit value (PNU: 24801)", and "Torque actual value
(PNU: 24695)" will be changed with the setting of [Pr. PA14].
0: Enabled
1: Disabled
1h
Setting value
Servo motor rotation direction
[Pr. PA14]
[Pr. PC29]
Torque mode
Torque command:
Positive
Torque mode
Torque command:
Negative
0
0 _ _ _:
Enabled
CCW or positive
direction
CW or negative
direction
1 _ _ _:
Disabled
CCW or positive
direction
CW or negative
direction
1
0 _ _ _:
Enabled
CW or negative
direction
CCW or positive
direction
1 _ _ _:
Disabled
CCW or positive
direction
CW or negative
direction
PC31
RSUP1
Vertical axis
freefall
prevention
compensatio
n amount
Set the compensation amount of the vertical axis freefall prevention function.
Set it per servo motor rotation amount or linear servo motor travel distance.
When setting a positive value, the servo motor or linear servo motor moves in the
direction set with [Pr. PA14] for the forward rotation pulse input. When setting a
negative value, the servo motor or linear servo motor moves in the direction set with
[Pr. PA14] for the reverse rotation pulse input.
For example, when [Pr. PA14 Rotation direction selection/] is set to "1" and a
positive value is set for the compensation amount, the servo motor pulls up in the
CW direction.
The vertical axis freefall prevention function is performed when all of the following
conditions are met.
1) Position mode
2) The setting value of this parameter is other than "0".
3) The forced stop deceleration function is enabled.
4) Alarm occurs or EM2 turns off when the servo motor speed is zero speed or
less.
5) MBR (Electromagnetic brake interlock) was enabled in [Pr. PD07] to [Pr. PD09],
and the base circuit shut-off delay time was set in [Pr. PC02].
Setting range: -25000 to 25000
0
[0.0001
rev]/
[0.01
mm]
PC38
ERW
Error
excessive
warning level
Set an error excessive warning level.
The setting unit can be changed with "Error excessive alarm/error excessive
warning level unit selection" in [Pr. PC06].
Set this per rev. for rotary servo motors and direct drive motors. Setting over 200
rev will be clamped with 200 rev. Set this per mm for linear servo motors. However,
setting "0" will not trigger [AL. 9B Error excessive warning].
When an error reaches the set value, [AL. 9B Error excessive warning] will occur.
When the error decreases lower than the set value, the warning will be canceled
automatically. The minimum pulse width of the warning signal is 100 [ms].
Set as follows.: [Pr. PC38 Error excessive warning level] < [Pr. PC01 Error
excessive alarm level] When you set as follows, [AL. 52 Error excessive] will occur
earlier than the warning.: [Pr. PC38 Error excessive warning level] ≥ [Pr. PC01 Error
excessive alarm level]
Setting range: 0 to 1000
0
[rev]/
[mm]