HOA Keypad
ALM FLT
Cause
Possible Solution
DC Bus Undervoltage
Uv1
O
O
Input power phase loss
• The main circuit drive input power is wired incorrectly.
• Correct the wiring.
There is a problem with the voltage from the drive
input power
• Check the voltage.
• Correct the voltage to be within the range listed in drive input
power specifications.
• If there is no problem with the power supply to the main
circuit, check for problems with the main circuit magnetic
contactor.
The main circuit capacitors are worn
• Check the maintenance time for the capacitors (U4-05).
• Replace either the control board or the entire drive if U4-05
exceeds 90%. For instructions on replacing the control
board, contact Yaskawa or a Yaskawa representative.
u
Operator Programing Errors
An Operator Programming Error (oPE) occurs when an inapplicable parameter is set or an individual parameter setting is
inappropriate. When an oPE error is displayed, press the ENTER button to display U1-18 (oPE fault constant) and show the
parameter causing the oPE error.
HOA Keypad
Cause
Possible Solution
oPE01
The drive model selection (o2-04) and the actual capacity of the
drive are not the same.
Correct the value set to o2-04.
oPE02
Parameters were set outside the possible setting range.
Use U1-18 to find parameters set outside the range. and set
parameters to the proper values.
oPE03
A contradictory setting is assigned to multi-function contact inputs
H1-01 to H1-08 (Excludes “Not used” and “External Fault.”)
Ensure all multi-function inputs are assigned to different functions.
The Up command was set but the Down command was not, or vice
versa (settings 10 vs. 11).
Properly set the functions that required for use in combination with
other functions.
The Up 2 command was set but the Down 2 command was not, or
vice versa (settings 75 vs. 76).
• Run/Stop command for a 2-wire sequence was set
(H1-
oo
= 42), but Forward/Reverse command (H1-
oo
= 43)
was not.
• “Drive Enable” is set to multi-function input S1 or S2
(H1-01 = 6A or H1-02 = 6A).
Properly set the functions that required for use in combination with
other functions.
oPE04
The drive, control board, or terminal board have been replaced and
the parameter settings between the control board and the terminal
board no longer match.
Set A1-03 to 5550 to load the parameter settings stored in the
terminal board to the drive. Initialize parameters after drive
replacement by setting A1-03 to 1110 or 2220.
oPE05
Frequency reference is assigned to an option card (b1-01 = 3) and
an input option card is not connected to the drive.
Reconnect the input option card to the drive.
The Run command is assigned to an option card (b1-02 = 3) and an
input option card is not connected to the drive.
Frequency reference is assigned to the pulse train input (b1-01 = 4)
and terminal RP is not set for frequency reference input (H6-01 >
0)
Set H6-01 to 0.
oPE07
At least two analog input terminals are set to the same function (i.e.,
at least two of these parameters have the same setting: H3-02,
H3-10, or H3-06).
Change the settings to H3-02, H3-10, and H3-06 so that functions
no longer conflict.
Note:
Both 0 (Frequency Reference Bias) and F (Not Used) can be
set to H3-02, H3-10, or H3-06 simultaneously.
The following simultaneous contradictory settings:
• H3-02, H3-10, or H3-06 = B (PID Feedback) while H6-01
(Pulse Train Input) = 1 (PID Feedback)
• H3-02, H3-10, or H3-06 = C (PID Target Value) while
H6-01 = 2 (pulse train input sets the PID target value)
• H3-02, H3-10, or H3-06 = C (PID Target Value) while
b5-18 = 1 (enables b5-19 as the target PID value)
• H6-01 = 2 (PID target) while b5-18 = 1 (enables b5-19 as the
target PID value)
Disable one of the PID selections.
oPE08
Attempted to use a function that is not valid for the selected control
mode.
Check the motor control method and the functions available.
i.8 Troubleshooting
50
YASKAWA TOEP YAIZ1U 02B YASKAWA AC Drive – Z1000 Quick Start Guide
