Siemens MICROMASTER 440 - Manual (Page 46)

6 Commissioning Issue 10/06
MICROMASTER 440
46 Operating Instructions (Compact)
A high thermal motor load and when the line supply is frequently switched-
out/switched-in requires, for closed-loop vector control
− that a KTY84 sensor is used, or
− an external 24V power supply voltage is connected
Motor cooling (Selects motor cooling system used)
0 Self-cooled: Using shaft mounted fan attached to motor
1 Force-cooled: Using separately powered cooling fan
2 Self-cooled and internal fan
3 Force-cooled and internal fan
Motor temperature sensor
Selects the motor temperature sensor.
0 No sensor
1 PTC thermistor (PTC)
2 KTY84
r0631
ADC
5 V
Signal
loss
detection
T
1
= 4 s
2
1
No sensor
PTC
KTY
0
P0604
Fault
F0015
& P0601 = 2
Thermal
motor
model
r0633
r0632
r0035
1 ≥
Motor
temp.
reaction
P0610
P0601
Equivalent
circuit data
P
V,mot
Power dissipation
V
ϑ
0
1
0
1
r0052
Bit13
PTC
KTY
Alarm threshold, motor overtemperature
Defines the alarm threshold for the motor overtemperature protection. This threshold, where
either a shutdown (trip) or Imax reduction is initiated (P0610) always lies 10 % above the
alarm threshold.
ϑ
warn
:
ϑ
trip
: Trip threshold (max. permissible temperature)
P0604 1.1 1.1
warn trip
⋅ = ⋅ = ϑ ϑ Warning threshold (P0604)
The alarm threshold should be at least 40 °C greater than the ambient temperature P0625.
P0604 ≥ P0625 + 40 °C
Inverter temperature reaction
Defines reaction when motor temperature reaches warning threshold.
0 No reaction, warning only
1 Warning and I
max
reduction (results in a lower output frequency)
2 Warning and trip (F0011)
Motor overload factor [%]
Defines motor overload current limit in [%] relative to p0305 (rated motor current). Limited to
maximum inverter current or to 400 % of rated motor current (p0305), whichever is the
lower.
2
0
P0601 = ...
P0604 = ...
130.0 °C
P0610 = ...
0
P0335 = ...
P0640 = ...
150.0 %