| Fig. 3-4: Operation Modes Which operation modes can be selected in a certain device is written in the
description for the operation mode parameters:
Parameter: Primary mode of operation S-0-0032
Secondary operation mode 1 S-0-0033
Secondary operation mode 2 S-0-0034
Secondary operation mode 3 S-0-0035
Check for input of the permissible interpolation method.
F208 UL The motor type has changed.
This indication happens when you power up for the first time with a
new motor. The regulator settings for the current, velocity and position loops are stored
in the feedback on the motor. After powering up, the drive compares the motor type stored
in the parameter with the connected motor type. If the two do not match, basic control
loop settings must be adapted, too.
With the Basic Load command, the default control loop settings are
loaded from the feedback memory into the drive. The previous loop settings are
overwritten. By pressing the S1 key, the command Basic Load is started.
Causes:
· The motor has been exchanged.
· A parameter file has been loaded, but the parameter P-0-4036,
Contacted motor type contained a motor type different from the present one.
Remedy:
Command C700 Basic load or press the S1 button.
F209 PL Load parameter default values
After replacing the firmware version, the drive displays
"PL", if the parameters have been changed in regards to the old product. By
pressing the S1 button on the drive controller or by starting the command "load basic
parameters", all the parameters will be erased and restored with the default
(initial) values.
Cause:
The firmware has been exchanged; the number of parameters in
comparison to the old product has changed.
Remedy:
Press S1 button on the drive controller, and all the parameters will
be erased and restored with the factory preset default values.
WARNING -> This overwrites all parameters
and positioning blocks.
F218 Amplifier overtemp. shutdown
The temperature of the amplifier’s heatsink is monitored. If
the heatsink is too hot, the drive will power down in order to protect against damage.
Cause:
1. Ambient temperature too high. The specified performance data are
valid up to an ambient temperature of 45°C.
2. The amplifier’s heatsink is dirty.
3. Air flow is prevented by other assembly parts or the control
cabinet assembly.
4. Blower defective
Remedy:
For 1. Reduce the ambient temperature, e.g. through cooling of the
control cabinet.
For 2. Remove obstructions or dirt from the heatsink.
For 3. Install the device vertically and clear a large enough area
for proper heatsink ventilation.
For 4. Exchange drive.
F219 Motor overtemp. shutdown
The motor temperature has risen to an unacceptable level. As soon as
the temperature error threshold of 155°C is exceeded, the drive will immediately be
brought to a standstill as set in the error reaction (P-0-0119, best possible standstill).
It applies:
temperature warning threshold < temperature error threshold
See also E251 Motor overtemperature warning.
Cause:
1. The motor is overloaded. The effective torque demanded from the
motor has been above its allowable continuous torque level for too long.
2. Wire break, ground short or short circuit in the motor
temperature monitor line
3. Instability in the velocity loop
Remedy:
For 1. Check the installation of the motor. If the system has been
in operation for a long time, check to see if the the operating conditions have changed.
(in regards to pollution, friction, moved components, etc.)
For 2. Check wires and cables to the motor temperature monitor for
wire breaks, earth short and short circuits.
For 3. Check velocity loop parameters.
F220 Bleeder overload shutdown
The regenerated energy from the mechanism of the machine via the
motor has exceeded the capability of the braking resistor (bleeder). By exceeding the
maximum energy of the resistor, the drive will shutdown according to the set error
reaction, thereby protecting the bleeder from temperature damage.
Cause:
The reflected energy from the machine’s mechanism over the
motor is too great.
Remedy:
With too much power -> reduce the acceleration value.
With too much energy -> reduce the velocity.
Check the drive installation. May require installation of an additional bleeder module.
F221 Motor temp. surveillance defective
Cause:
Wire break or interruption in the wires for the motor temperature
monitoring.
Remedy:
Check the wiring for the motor temperature monitoring (signals
MT(emp)+ and MT(emp)-) for interruption and short circuit.
F226 Undervoltage in power section
The level of the DC bus voltage is monitored by the drive
controller. If the DC bus voltage falls below a minimal threshold, the drive independently
shuts down according to the set error reaction.
Cause:
1. The power source has been interrupted without first switching off
the drive enable (RF).
2. Disturbance in the power supply
Remedy:
For 1. Check the logic regarding the activation of the drive within
the connected control.
For 2. Check the power supply. The error can be cleared by removing
the drive enable signal.
F228 Excessive deviation
When the position loop is closed, the drive monitors whether it is
able to follow the specified command value. This is done by calculating a model position
value in the drive and comparing that value with the actual feedback value. If the
difference between theoretical and actual position value permanently exceeds the value of
the S-0-0159, Monitoring window parameter, the drive oviously cannot follow the given
command value. Then this error is generated.
Cause:
1. The drive's acceleration capacity has been exceeded.
2. The axis is blocked.
3. Incorrect parameter values set in the drive parameters.
4. Incorrect parameter values in S-0-0159, Monitoring window.
Remedy:
Ref. 1. Check the S-0-0092,
Bipolar torque/force limit value parameter and set it to the maximum permissible value of
the application. Reduce the specified acceleration value from the controller (see
controller Manual).
Ref. 2. Check the mechanical system and eliminate jamming of the
axis.
Ref. 3. Check the drive parameters (control loop tuning).
Ref. 4. Set the parameter values of S-0-0159, Monitoring window.
F229 Encoder 1 failure: quadrant error
With wrong signals in the encoder evaluation, a hardware error has
been discovered in the encoder interface 1 being used.
Cause:
1. Defective encoder cable
2. Disruptive electro-magnetic interference on the encoder cable
3. Defective encoder interface
4. Defective drive controller
Remedy:
For 1. Exchange the encoder cable.
For 2. Keep the encoder cable well away from the power cables.
For 3. Exchange the encoder interface.
For 4. Exchange the drive controller.
F230 Max. signal frequency of encoder 1
exceeded
The signal frequency of the encoder 1 (motor encoder) is checked
whether the allowed max. frequency of the encoder interface is exceeded. If the frequency
is higher than allowed, the error F230, Max. signal frequency of encoder 1 exceeded is
generated. The position status of the encoder 1 is cleared to 0.
F234 Emergency-Stop
Cause:
The emergency stop function was activated by turning off the +24V
current at the E-Stop input. The drive was brought to a standstill by the previously
set error response.
Remedy:
1. Eliminate the condition which caused the +24V current at the
E-Stop input to be turned off.
2. Do the "Reset class 1 diagnostic" command, e.g. with
the control system or the S1 button on the drive controller.
F236 Excessive position feedback
difference
Cause:
In the communication phase 4 transition check command, position
feedback value 1 and position feedback value 2 are set to the same value, and the cyclic
evaluation of both encoders is started. In cyclic operation (phase 4), the position
feedback difference of both encoders is compared with S-0-0391, Monitoring window feedback
2. If the amount of the difference exceeds the monitoring window, the error F236 Excessive
position feedback difference is diagnosed, the parameter-selected error response is
performed, and the reference bits of both encoders are cleared. The monitoring is off,
when the parameter S-0-0391, Monitoring window feedback 2 is set to the value 0.
Possible Causes :
1. Incorrect parameter for the encoder 2 (S-0-0115, Position
feedback 2 type parameter, S-0-0117, Resolution of feedback 2) 2. Incorrect parameter
setting of mechanical system between motor shaft and encoder
2: (S-0-0121, Input revolutions of load gear, S-0-0122, Output
revolutions of load gear, S-0-0123, Feed constant)
3. The mechanical system between motor shaft and encoder 2 is not
rigid (e.g. gear play).
4. Defective encoder cable
5. Maximum input frequency of the encoder interface exceeded
6. Encoder 2 (optional) is not mounted to the driven axis.
7. Incorrect reference measure of an absolute encoder
Remedy:
Ref. 1. Check S-0-0115, Position feedback 2 type parameter and
S-0-0117, Resolution of feedback 2.
Ref. 2. Check S-0-0121, S-0-0122, Input/Output revolutions of load
gear and S-0-0123, Feed constant.
Ref. 3. Increase S-0-0391, Monitoring window feedback 2.
Ref. 4. Replace encoder cable.
Ref. 5. Reduce the velocity.
Ref. 6. Set S-0-0391, Monitoring window feedback 2 to 0 (de-activate
monitoring function).
Ref. 7. Perform P-0-0012, C300 Command 'Set absolute measurement'.
F237 Excessive position command
difference
Cause:
When the drive is operating in position control, incoming position
command values are monitored. If the velocity required of the drive by two successive
position command values is greater than or equal to the value in S-0-0091, Bipolar
velocity limit value, position command value monitoring is initiated. The Excessive
position command value is stored in parameter P-0-0010. The last valid position command
value is stored in
parameter P-0-0011. If position data are to be processed in modulo format, then the
interpretation of the command is also dependent on the value set in S-0-0393, Command
value mode. The parameter should be set for the "shortest path" (0).
Remedy:
Compare S-0-0091, Bipolar velocity limit value with the velocity in
the program and adjust to match it, if necessary.
F242 Encoder 2 failure: signal too small
Cause:
The analog signals of an external measurement system are used for
high resolution analysis of that measurement system. These are monitored according to two
criteria:
1. The pointer length, which is calculated from the sine and cosine
signals, must be at least 1 V.
2. The maximum pointer length resulting from the sine and cosine
signals must not exceed 11.8 V. pointer length = + sin cos 2 2
F245 Encoder 2 failure: quadrant error
The evaluation of the additional optional encoder (encoder 2) is
active. In the evaluation of the sinusoidal input signals of the optional encoder, a
plausibility check is performed between these signals and the counter fed by these
signals. Doing this, an error has been encountered.
Cause:
1. Defective encoder cable
2. Disruptive electro-magnetic interference on the encoder cable
3. Defective encoder interface
Remedy:
For 1. Exchange the encoder cable.
For 2. Keep the encoder cable well away from power cables.
For 3. Exchange the encoder interface (DIAX) or the device
(Ecodrive).
F246 Max signal frequency of encoder 2
exceeded
The signal frequency of the encoder 2 (optional encoder) is checked
whether the allowed max. frequency of the encoder interface is exceeded. Whether, in the
case of an excessive frequency, the error F246, Max signal frequency for encoder 2
exceeded is generated or not, depends on the setting in the parameter P-0-0185, Function
of encoder 2. If the number 4 for spindle encoder is set there, only the position status
of the optional encoder is cleared to 0. In the other case, the warning F246 is generated
and the position status is cleared to 0.
F248 Low battery voltage
Cause:
For motors of series MKD and MKE, the absolute position information
is stored by a battery-powered electronic in the motor feedback. The battery is designed
for a 10-year life span. If the battery voltage falls below 2.8 V, this message appears.
The absolute encoder function will still be preserved for about 2 weeks.
CAUTION
Malfunction in the control of motors and moving elements
Possible damages: Mechanical injuries
-> Replace the battery as soon as possible.
Instructions for Exchanging Batteries
Have the following tools and accessories ready:
· Torx screwdriver size 10
· Needle-nose pliers, torque wrench
· New packaged battery (Part No. 257101)
CAUTION
Malfunction in the control of motors and moving elements
Possible damages: Mechanical injuries
-> Turn off the power supply. Make sure it will not be turned
back on. Exchange the battery while the control voltage (24V) is turned on. If the control
voltage is turned off while the battery is taken out, the absolute reference point will be
lost. Then, the reference point must be reestablished with the command "Set absolute
measuring".
Removing the Battery
· Unscrew torx screws (1) with size 10 screwdriver.
· Pull out the resolver feedback (RSF) lid by hand.
· Pull off the battery connector (2).
· Loosen battery clamp (3) and remove the battery.
· Place the prepared battery in the housing and screw on the clamp.
Attention! Do not kink or clamp the battery cable.
· Attach the connector (2) of the battery.
Close the resolver feedback lid, screw in 4 torx screws (1) and
tighten to 1.8 Nm with the torque wrench. |