11. Alarm and Warning
— 11-1 —
11. Alarm and Warning
11.1. Identifying Alarm and Warning
If an error occurs in the Megatorque Motor System, the Driver Unit Model EDD gives an alarm or a
warning.
Table 11-1: Category of abnormality and condition of the System
Reports an occurrence
serious problem and input of
emergency stop
Power off.
In case of an emergency stop, clear the
input EMST.
Reports an occurrence of
minor problem that can be
easily rectified.
You can clear a warning with the input
ACLR, the command CL and a reset of
power (Off→On). However, it is
necessary to remedy the cause.
Reports one of the over
travel limits is activated.
Either one of OTPA or
OTPM*, from which the
Motor entered, opens*.
Stops immediately.
Input of limit
direction is not
accepted.
Move the Motor out of the off limits area.
* When the setting of logic is the shipping set
11.1.1. LED Alarm Indicator
Turn on the power and confirm the 7 segments LED (alarm indicator) on the front panel of the Driver Unit
for the condition of the System. If it is in the state shown in the Figure 11-1 below, an alarm or warning is
occurring.
If the parameter LED (LED mode) is set other than LM0, the alarm indicator does not report the
occurrence of alarm or warning. (In such a case, it shows the state of the settings of the control
inputs and outputs.)
Fig 11-1: When error occurs
Fig 11-2: In normal state
Power LED: It tuns on when the power is on.
Normal state: Green
Error occurs: Orange
7 segments LED: Identifies a type of alarm.
It indicates a type of alarm in 2 digit
numbers. The numbers will be dispalyed
in time sharing.
If two or more errors occurs, the LED
indicates them in the same manner as
described above.
Power LED: Turns on when the power
turns on.
• Normal state: Green
• Error: Orange
Fig 11-3: Example of simultaneous occurrence of the alarm F3 and F4.
(Hardware over travel limit and Emergency stop)
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