Panasonic minas a series Operating Manual page 66

Alarm
Protection
Code No.
1) The internal regenerative discharge resistor is
12
O v e r v o l t a g e
disconnected.
error
(continued)
2) The external regenerative discharge resistor is
not suitable so that regenerative energy can-
not be absorbed.
3) The driver (circuit) failed.
13
Undervoltage,
The P-N voltage of the main power
main power
converter is lower than the specified
value during Servo-ON.
2) The main power line voltage is too
low, an instantaneous outage occurred, the
power source is too
small, the main power is turned off, or the main
power
is not fed.
3) Too small power source: the line voltage
dropped due to the inrush current at power
on.
Cause
- 65 -
Countermeasures
1) Measure the P-B1 resistance of the driver us-
ing a circuit tester. If it read Åá, the connec-
tion is broken.
Replac the driver. Insert an external regen-
erative discharge resistor between the P and
B2 terminals.
2) Use a resistor having the specified resistance
for specified Watt.
3) Replace with a new driver (that is working cor-
rectly for another axis).
Measure the terminal-to-terminal
voltages (between L1, L2 and L3).
1) Increase the capacity of the main
power or replace it with a larger one.
Or remove the causes of the failure
of the magnetic contact, and then
restart the power source.
2) AIncrease the capacity of the main power. For
the required capacity, see "List of Applicable
Components".
3) Correct the phase (L1, L2 and L3)
connections of the main power. If the main
power is signle-phase 100V. use L1 and L3.
4) Check the timing of power-on (for both
the main power and control power).