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Siemens SIMOVERT MASTERDRIVES Operating Instructions Manual Page 80

Motion control, frequency inverter dc-ac compact plus type.
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Faults and Alarms
Number / Fault
Cause
F015
Motor is blocked/overloaded (current control),
or has stalled (v/f characteristic):
Motor blocked
Static load is too high
The fault is not generated until after the time
entered in P805.
Binector B0156 is set, in status word 2 r553 Bit
28.
Whether the drive is blocked or not can be
detected at P792 (Perm Deviation) and P794.
P806 enables detection to be limited to "at
standstill" (P806 = 1, only for current control)
or to be completely de-activated (P806 = 2).
In the case of current control, the precondition
for this fault is that the torque limits (B0234)
have been reached.
In the case of slave drive, detection is de-
activated.
In the case of v/f control, the I(max) controller
must be active.
F017
SAFE OFF operating or failure of the 24 V
power supply during operation (only for
SAFE OFF
Compact PLUS units)
F020
The motor temperature limit value has been
exceeded.
Excess temperature of
motor
r949 = 1 Motor temperature limit value
exceeded
r949 = 2 Short-circuit in the motor temperature
sensor cable or sensor defective
r949 = 4 Wire break of motor temperature
sensor cable or sensor defective
F021
Parameterized limit value of the I2t monitoring
for the motor (P384.002) has been exceeded
Motor I2t
F023
The limit value of the inverter temperature has
been exceeded
Excess temperature of
inverter
F025
UCE upper switch (Compact PLUS) / UCE
Phase L1 (chassis-type unit)
UCE upper switch/UCE
Phase L1
F026
UCE lower switch (Compact PLUS) / UCE
Phase L2 (Compact, chassis)
UCE lower switch/UCE
Phase L2
12-2
Counter-measure
- Reduce the load
- Release the brake
- Increase current limits
- Increase P805 Blocking Time
- Increase the response threshold for the
permissible deviation P792
- Increase torque limits or torque setpoint
v/f characteristic only:
- Reduce rate of acceleration
- Check characteristic setting.
Jumper applied for SAFE OFF?
SAFE OFF checkback connected?
On Compact PLUS units: check 24 V supply
- Temperature threshold adjustable in P381!
- P131 = 0 -> fault de-activated
- Check the motor (load, ventilation etc.)
- The current motor temperature can be read
in r009 (Motor Temperat.)
- Check the sensor for cable break, short-
circuit
Check: Thermal time constant of motor P383
Mot ThermT-Const or motor I2t load limit
P384.002.
The I2t monitoring for the motor is
automatically activated if P383 >=100s
(=factory setting) and P381 > 220°C is set.
Monitoring can be switched off by setting a
value <100s in P383.
- Measure the air intake and ambient
temperature.
- Observe the derating curves at theta > 50 °C
(Compact PLUS) or 40 °C
- Check whether the fan is running
- Check that the air entry and discharge
openings are not restricted
- Check the converter outputs for earth fault
- Check the switch for "Safe OFF" on Compact
units
- Check the converter outputs for earth fault
- Check the switch for "Safe OFF" on Compact
units
6SE7087-6KP50
Operating Instructions
SIMOVERT MASTERDRIVES
10.99
Siemens AG

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