Yaskawa AC Drive-P1000 Industrial Fan - Manual (Page 308)

Digital Operator Display Fault Name
SEr
Too Many Speed Search Restarts
The number of Speed Search restarts exceeded the value set to b3-19.
Cause Possible Solution
Parameters related to Speed Search are set to
the wrong values
• Reduce the detection compensation gain during Speed Search (b3-10).
• Increase the current level when attempting Speed Search (b3-17).
• Increase the detection time during Speed Search (b3-18).
• Repeat Auto-Tuning.
The motor is coasting in the opposite direction
of the Run command
Set b3-14 to 1 to enable Bi-Directional Speed Search.
Digital Operator Display Fault Name
TdE TdE Time Data Error
Cause Possible Solution
An error has occurred in the Real-Clock Time
function of the digital operator
Replace the digital operator. For instructions on replacing the digital operator, contact Yaskawa or your
nearest sales representative.
Digital Operator Display Fault Name
<1>
THo
Thermistor Disconnect
The thermistor that detects motor temperature has become disconnected.
Cause Possible Solution
The motor thermistor is not connected
properly.
Check the thermistor wiring.
<1> Detected in models 4A0930 and 4A1200.
Digital Operator Display Fault Name
TIE TIE Time Interval Error
Cause Possible Solution
An error has occurred in the Real-Clock Time
function of the digital operator
Replace the digital operator. For instructions on replacing the digital operator, contact Yaskawa or your
nearest sales representative.
Digital Operator Display Fault Name
TIM TIM Time Not Set
Cause Possible Solution
The Real-Time Clock for the digital operator
is not set in parameter o4-17
• The drive is a new drive, first power-up
condition
• o4-17 was set to 2, Reset, by the user,
manually clearing the Real-Time Clock
data.
Set o4-17 to 1 to set the time for the digital operator.
The drive will display the "TIM" alarm (Time Not Set) when the Real time Clock is not set . Additionally,
at power up, if the "TIM" condition is present, the drive will automatically switch to the time setting
screen (o4-17 = 1) for 30 seconds to prompt the user to set the Real-Time Clock.
The user did not set the Real Time Clock when
prompted following power-up.
Cycle power to the drive and set the Real Time Clock within 30 seconds of power-up, or set the clock
manually via parameter o4-17.
The digital operator battery is low or the
battery has been replaced
Replace the digital operator battery and set the Real-Time Clock.
An error has occurred in the Real-Time Clock
function of the digital operator
Replace the digital operator. For instructions on replacing the digital operator, contact Yaskawa or your
nearest sales representative.
Digital Operator Display Fault Name
UL3
Undertorque Detection 1
The current has fallen below the minimum value set for torque detection (L6-02) for longer than the
allowable time (L6-03).
Cause Possible Solution
Parameter settings are not appropriate for the
load
Check the settings of parameters L6-02 and L6-03.
There is a fault on the machine side Check the load for any problems.
6.4 Fault Detection
308 YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual