List Of Power Backup Function Alarms; List Of Power Backup Function Warnings - Mitsubishi Electric MDS-E Series Instruction Manual

MDS-E/EH Series Instruction Manual
9 Power Backup System

9.4.2 List of Power Backup Function Alarms

When a power backup function alarm occurs, the power backup unit will notify the alarm to the power supply and will
perform deceleration control. Due to this control, the servo/spindle drive units will decelerate and stop the motors. At the
same time, "Power supply option unit error: Alarm 74" will appear on the NC monitor. As the details of the error status,
the alarm No. is displayed with the LED on the front of the power backup unit. Check the alarm No. and remove the
cause of the alarm according to this list.
No. Name
8 Watchdog
10 Memory error 1
11 Memory error 2
12 Unit ID error
13 A/D converter error
18 Function selection error
19 External emergency stop setting error
1A Resistor unit connection error
1B Capacitor connection error
1C Power supply unit Connect error
50 S/W processing error
51 Main circuit error
52 Control power output circuit error
53 Resistor unit circuit error
54 Inrush circuit error
Over current in control power output
55
circuit
56 Overheat in control power output circuit An overheat was detected in the control power supply backup output circuit.
58 Resistor unit error
90 Over voltage
(Note 1)"b", "C" and "d" displayed on the power backup unit's LED as a solid light (not flickering) do not indicate an alarm.
(Note 2)Resetting methods
PR: Reset by turning the NC power ON again. This alarm can also be reset with the AR resetting conditions.
AR: Reset by turning the power backup unit power ON again.
NR: Reset with NC reset (Alarms with * must satisfy the resetting conditions)

9.4.3 List of Power Backup Function Warnings

When a power backup function warning occurs, "Power supply option unit error: Warning EF" will appear on the NC
monitor. As the details of the error status, the warning No. is displayed with the LED on the front of the power backup
unit. Check the warning No. and remove the cause of the warning according to this list.
No. Name
D0 Instantaneous power interruption
D1 Over regeneration
D5 Resistor unit overheat
(Note1) Resetting method
*: Automatically reset once the cause of the warning is removed.
Details
The system does not operate correctly.
An internal memory error was detected during the power ON self-check.
An error was detected in the internal clock signal.
An error was detected in the internal hardware ID.
An error was detected in the A/D converter, which is used for detecting
current and voltage.
An error was detected in the settings of DIP or rotary switches.
The external emergency stop cancel state was detected although the
external emergency stop input is set as disabled.
Resistor unit disconnection was detected.
Non-connection of capacitor was detected although the capacitor unit
connection is set as enabled.
Communication error was detected in the connection to the power supply
unit.
Software processing has not finished within the specified time.
An error was detected in a thyristor or charging circuit.
An error was detected in the output changeover relay or power output of the
control power supply.
An error was detected in the resistor regeneration transistor or regeneration
output.
An error was detected in the rush circuit relay or rush resistor of the control
power supply.
An excessive current was detected in the control power supply backup output
circuit.
An abnormal resistor unit value was detected during the power ON self-
check.
The voltage between L+/L- of the main circuit has exceeded the tolerance.
Details
- AC power supply voltage decrease was detected.
- Loss of phase was detected.
- Bus voltage decrease was detected.
Over-regeneration detection level exceeded 100%.
Thermal error was detected in resistor unit.
457
Reset
Detection period
method
After initialized AR
At initializing AR
At initializing AR
After initialized AR
At initializing AR
After initialized AR
After initialized AR
First ready-ON AR
After initialized PR
After initialized PR
After initialized PR
After initialized PR
After initialized PR
After initialized PR
After initialized PR
After initialized PR
After initialized PR
After initialized NR (*)
Reset
Detection period
method
After initialized *
After initialized *
After initialized *
IB-1501229-F