Siemens SIMOVERT MASTERDRIVES Betriebsanleitung Seite 283

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 STOP operating or failure of the 24 V
power supply during operation (only for
SAFE STOP Compact PLUS units)
Compact PLUS only
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 undershot or exceeded. In fault value
Excess temperature of r949 the temperature at the time of the fault is
inverter saved.
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
- Check connection of motor phases including
correct phase assignment/sequence
v/f characteristic only:
- Reduce rate of acceleration
- Check characteristic setting.
Jumper applied for SAFE STOP?
SAFE STOP 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 minimum and maximum ambient
temperature from 0°C to 45°C!)
- Observe the derating curves at theta > 45 °C
(Compact PLUS) or 40 °C
- Check whether the fan is running
- Check that the air entry and discharge
openings are not restricted
- In the case of units ³ 22 kW
acknowledgement is only possible after 1
minute
6SE7087-6KD50
Operating Instructions SIMOVERT MASTERDRIVES
08.2009
Siemens AG