NSK EDD Megatorque Motor - Alarm Clear: ACLR

7. Operational Function
— 7-2 —
7.1.2. Alarm Clear: ACLR
 This input clears a warning.
Table 7-3: Signal logic of the input ACLR
Logic
Description
↓ (ON  OFF)
Not effective
↑ (OFF  ON)
Clears alarm.
 A rising signal of the input ACLR from OFF to ON clears a warning while the output WRN (Warning) is
closed.
 The state of the Motor servo returns to the same condition before the warning is occurred. (Provided that
no input, such as the input SVON, is given to change the state of servo.
 The table below lists the warning that is given by the output WRN.
Table 7-4: Warning to be reported by the output WRN
‘7 segments LED
Command TA (Tell alarm status)
Description
Motor condition
A3
A3>Over Load
Software thermal over
Servo-off
A5
A3>Origin Undefined
Home position undefined.
No change
C0
C0>Pulse Command/Feedback
Error
Error in the commanded position or
the feedback signal.
Servo-off
F1
F1>Excess Position Error
Excessive position error
Servo-off
F5
F5>Program Error
Program error
Cycle stop
F8
F8>AT Error
Automatic tuning error
Cycle stop
P5
P5>Main AC Line Under Voltage
Low voltage of main power
Servo-off
Fig 7-2: Signal timing of the input ACLR
Motor motion
closed
open
OFF
ON
OFF
Output WRN
Input ACLR
Output SVST
closed
open
closed
open
Output BUSY
closed
open
closed
open
Output IPOS
(FW > 0: FIN)
Stops by the dynamic brake.
Input SVON
ON
OFF
Max. 1 ms
Max. 1 ms
Max. 1 ms.
Max. 1 ms
A warning occurs that makes the Motor servoe off.
Min. 1 ms
Output IPOS
(FW < 0: CFIN)
(FW = 0: IPOS)
Max. 170 ms (Max. 3.2 s)

1

1) It takes 3.2 seconds to activate the
Motor servo for the first time after
turning on the main power.