Panasonic minas a4 series Instruction Manual page 257

Protective Error
function code No.
Position of load by the external scale and position of
*Hybrid
25
the motor by the encoder slips larger than the setup
deviation
pulses with Pr7B (Setup of hybrid deviation excess) at
excess
full-closed control.
error
protection
Over-speed The motor rotational speed has exceeded the setup
26
value of Pr73 (Over-speed level setup)
protection
Division and multiplication ratio which are set up with
Electronic
27
the 1st and the 2nd numerator/denominator of the
gear error
electronic gear (Pr48 to 4B) are not appropriate.
protection
*External Communication error has occurred in data from the
28
encoder. Mainly data error due to noise. Encoder
scale com-
cables are connected, but communication date has
munication
some error.
data error
protection
Deviation Deviation counter value has exceeded 2
29
counter
overflow
protection
Software The motor position has exceeded the range set with
34
software limit.
limit
1)Gain has not matched up.
protection
2)Setup value of Pr26 (Software limit setup) is small.
Communication between the external scale and the
*External
35
driver has been interrupted in certain times, and
scale com-
disconnection detecting function has been triggered.
munication
error
protection
Data in parameter storage area has been damaged
*EEPROM
36
when reading the data from EEPROM at power-on.
parameter
error
protection
*EEPROM Data for writing confirmation to EEPROM has been
37
damaged when reading the data from EEPROM at
check code
power-on.
error
protection
Connection of both CW and CCW over-travel inhibit
Over-travel
38
input (CWL, Pin-8/CCW, Pin-9) to COM- have been
inhibit
opened, while Pr04 (Over-travel inhibit input setup) is 0.
input
Or either one of the connection of CW or CCW over-
protection
travel inhibit input to COM- has been opened, while
Pr04 is set to 2.
Causes
27
(134217728).
[When in Trouble]
Measures
• Check the connection between the motor and the load.
• Check the connection between the external scale and
the driver.
• Check that the variation of the motor position
(encoder feedback value) and the load position
(external scale feedback value) is the same sign
when you move the load.
Check that the numerator and denominator of the
external scale division (Pr78, 79 and 7A) and reversal
of external scale direction (Pr7C) are correctly set.
• Do not give an excessive speed command.
• Check the command pulse input frequency and divi-
sion/multiplication ratio.
• Make a gain adjustment when an overshoot has
occurred due to a poor gain adjustment.
• Make a wiring connection of the encoder as per the
wiring diagram.
• Set up Pr73 to 0 (Set up to motor max. speed x 1.2.)
• Check the setup values of Pr48 to 4B.
• Set up the division/multiplication ratio so that the
command pulse frequency
multiplication may become less than 80Mpps at
deviation counter input portion, and 3Mpps at
command input portion.
• Secure the power supply for the encoder of DC5±5%
(4.75-5.25V)...pay attention especially when the
encoder cables are long.
• Separate the encoder cable and the motor cable if
they are bound together.
• Connect the shield to FG...refer to wiring diagram.
• Check that the motor runs as per the position com-
mand pulses.
• Check that the output toque has not saturated in
torque monitor.
• Make a gain adjustment.
• Set up maximum value to Pr5E (1st torque limit
setup) and Pr5F (2nd torque limit setup).
• Make a wiring connection of the encoder as per the
wiring diagram.
Refer to P.258,"Software Limit Function" before using
this.
1)Check the gain (balance of position loop gain and ve-
locity loop gain) and the inertia ratio.
2)Setup a larger value to Pr26.
• Make a wiring connection of the external scale as per
the wiring diagram.
• Correct the miswiring of the connector pins.
• Set up all parameters again.
• If the error persists, replace the driver (it may be a
failure.) Return the product to the dealer or
manufacturer.
Replace the driver. (it may be a failure). Return the
product to a dealer or manufacturer.
• Check that there are not any errors in switches, wires
or power supply which are connected to CW/CCW
over-travel inhibit input. Check that the rising time of
the control power supply (DC12-24V) is not slow.
after division.
255