Omron R88D-GT series, Руководство пользователя

Страница: 306 / 510

5-19
5-9 Overrun Limit
5
Ope
rati
ng Func
tions
5-9 Overrun Limit
Function
• The Servomotor can be stopped with an alarm for an overrun limit error (alarm code 34) if the
Servomotor exceeds the allowable operating range set in the Overrun Limit Setting (Pn26) with
respect to the position command input.
• This can be used to prevent impact on the edges of the machine because of Servomotor
oscillation.
Parameters Requiring Settings
Operating Conditions
• The overrun limit will operate under the following conditions.
Conditions for Clearing the Position Command Input Range
The position command input range will be cleared to zero under the following conditions.
• The power supply is turned ON.
• The position deviation is cleared. (The deviation counter clearing is enabled and drive prohibit
input is enabled by setting the Stop Selection for Drive Prohibition Input (Pn66) to 2.)
• Normal Mode Autotuning starts or ends.
Parameter No. Parameter name Explanation
Reference
page
Pn26 Overrun Limit Setting
Set the Servomotor’s allowable operating range for
the position command input range.
An overrun limit error (alarm code 34) will occur if the
set value is exceeded.
5-65
Conditions under which the overrun limit will operate
Operating mode
Position Control Mode is used.
Pn02 = 0: Position control
Pn02 = 3: First control mode for position/speed control
Pn02 = 4: First control mode for position/torque control
Others

1.The servo is ON.
 2.The Overrun Limit Setting (Pn26) is not 0.

3.The allowable operating range for both forward and reverse is within 2147483647 after the po-
sition command input range is cleared to zero.
If the condition 1 above is not met, the Overrun Limit Setting will be disabled until the conditions
for clearing the position command input range are satisfied, as described below.
If the conditions 1 and 2 above are not met, the position command input range will be cleared to
zero.