Yaskawa MP2000 - Manual (Page 122)

TECHNICAL NOTE
ALARM RESET Function Block
Function block for MP2000 series
<ALRMRST> Function Block Summary
The “ALARMRST” block is used to reset any servo alarm as well as RDA errors in MW3**81 and
MW3**82. Not all errors can be cleared from the reset clock. Some errors will require cycling the power.
Function block diagram
<ALRMRST> Function block Operation Notes
• To use the function block, the EXECUTE input must see a rising edge. The reset
bit (ACR) will go on as long as the EXECUTE input is on.
• Related Function Blocks: Errors that can be reset with this block can be
detected by Read Error Function Block (RDERROR).
• Alarm Indication and Reset Registers Used:
o
ACR (OBxx00F): Alarm Clear, used to clear alarms in system
o
Warning (Ilxx02): Warning information on the axis displayed in the bit.
o
Alarm (Ilxx04): Alarm information on the axis displayed in the bit.
o
Servo driver alarm (IBxx2C0): Servo driver alarm
o
Servo alarm code (IWxx2D): Refer to the manual of the servo amplifier for
details of the servo amplifier alarm code.
o
CPU error (SW00041): CPU Error Status System Register. This is not
used for the detection purpose, but can be used to help the user
determine more information about the alarm. This register indicates
bitwise: Serious failure, Program memory error, User operation error, I/O
error, and Transmission errors. Refer to Chapter 10 of the user's manual
(Trouble shoot) for details.
• The servo alarm: This block will set ACR to initiate alarm clear. The ACR bit is
reset request of the alarm to the controller. If the alarm is not cleared within
500msec, the block will error out and the ERROR output will turn on. If the alarm
is cleared, the DONE output will be latched on.
• RDA alarms: : This block will set MW3xx81(ERRID1) and MW3xx82(ERRID2)
both to zero.
File: MP2000_IndividualFunctionDocument_RevC 122/168
Doc Number: eng.MCD.05.101
11/17/2005