![background image](http://html1.mh-extra.com/html/omron/smartstep-junior-r7d-zp/smartstep-junior-r7d-zp_user-manual_741365099.webp)
6-2 Alarm Table
6-2-1 Alarm Table
6-2 Alarm
Table
If the Servo Driver detects an error, ALM (alarm output) will be output, the power drive circuit in the
Servo Driver will be turned OFF, and the alarm code will be displayed. Refer to
6-3-1 Error Diagnosis
using the Alarm Indicators
for details on appropriate alarm countermeasures.
6-2-1
Alarm Table
LED Indicators
ALM
output
Error detection
function
Cause of error
AL1
AL2
AL3
OFF
Speed error
(Overspeed)
A speed error occurs if the Servomotor’s speed exceeds 1.1 times the
maximum speed (4,950 rpm).
Either reduce the position command’s speed or correct the command
pulse resolution.
AL1
AL2
AL3
OFF
on).
Overload
This error occurs when the Servomotor’s torque exceeds the range of
the overload characteristics (electronic thermal functi
Check the load, review the acceleration/deceleration time, and check for
Servomotor vibration.
AL1
AL2
AL3
OFF
Encoder error
This error occurs when data cannot be read from the Encoder or the
expected differential-phase signal is not present.
Check the cables.
AL1
AL2
AL3
OFF
operation.
Voltage error
This error occurs if the voltage between P–N is outside of the
acceptable range of 170 to 410 V during
Check whether the input voltage is between 170 and 253 V.
AL1
AL2
AL3
OFF
Overcurrent
This error occurs when the current exceeds the power module’s
maximum allowable current or the temperature in the module exceeds
the allowed level.
Check for shorted outputs, ground problems, or insufficient Servo Driver
cooling/air circulation.
AL1
AL2
AL3
OFF
Servo Driver fan
stopped
This error occurs when the Servo Driver’s built-in axle fan stopped.
Replace the fan.
AL1
AL2
AL3
OFF
System error
An internal MPU error occurred.
Replace the Unit.
AL1
AL2
AL3
Flashing steadily
---
Command pulse
setting rotary switch
(PULSE) changed
Displayed when the setting on the front panel’s command pulse setting
rotary switch was changed. This is not an alarm.
Lit:
Not lit:
Flashing:
6-4
Summary of Contents for SMARTSTEP Junior R7D-ZP
Page 3: ...2 ...
Page 18: ...Section 1 Configuration Features and System ...
Page 25: ...1 5 Applicable Standards 1 5 2 UL and cUL Standards 1 8 ...
Page 26: ...Section 2 Dimensions Standard Models and ...
Page 36: ...Section 3 Specifications ...
Page 62: ...Section 4 System Design ...
Page 86: ...Section 5 Operation ...
Page 96: ...Section 6 Troubleshooting ...
Page 109: ...6 5 Periodic Maintenance 6 5 3 Replacing the Cooling Fan 6 14 ...
Page 110: ...Appendix ...