Issue 10/06

6 Commissioning

6.4.13

P0290 = ...

Inverter protection

Inverter overload reaction

0

Selects reaction of inverter to an internal over-temperature.

0Reduce output frequency

1Trip (F0004 / F0005)

2Reduce pulse frequency and output frequency

3Reduce pulse frequency then trip (F0004)

r0036

r0037

Inverter monitoring

i2t

P0294

Heat sink temperature P0292

IGBT

temperature

P0292

Inverter overload reaction

P0290

i_max control

(U/f)

Current control

(SLVC, VC)

f_pulse control

A0504

A0505

A0506

F0004

F0005

P0292 =...

P0295 = ...

Inverter temperature warning

15 °C

Defines the temperature difference (in ºC) between the Overtemperature trip threshold and the warning threshold of the inverter. The trip threshold is stored internally by the inverter and cannot be changed by the user.

Temperature warning threshold of inverter T_warn

Twarn = Ttrip - P0292

Temperature shutdown threshold of inverter T_trip

 

Temperature

 

 

 

 

MM440, Frame Size

 

 

 

 

A - C

 

D - F

 

F

 

FX

 

GX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

600 V

 

95 kW

110 kW

132 kW

160 kW

200 kW

 

 

 

 

 

 

 

 

CT

CT

CT

CT

CT

 

Heat sink

110 °C

 

95 °C

 

80 °C

 

88 °C

91 °C

80 °C

82 °C

88 °C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IGBT

140 °C

 

145 °C

 

145 °C

 

150 °C

150 °C

145 °C

147 °C

150 °C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input rectifier

-

 

-

 

-

 

75 °C

75 °C

75 °C

75 °C

75 °C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cooling air

-

 

-

 

-

 

55 °C

55 °C

55 °C

55 °C

50 °C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Control board

-

 

-

 

-

 

65 °C

65 °C

65 °C

65 °C

65 °C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Delay, fan shutdown

 

 

 

 

 

 

 

 

 

 

0 s

This defines the delay time in seconds between powering down the frequency inverter and then powering-down the fan. A setting of 0 means that the fan is immediately shut down (powered-down).

6.4.14Motor protection

In addition to the thermal motor protection, the motor temperature is also included in the adaptation of the motor equivalent circuit diagram data. Especially for a high thermal motor load, this adaptation has a significant influence on the degree of stability of the closed-loop vector control. For MM440 the motor temperature can only be measured using a KTY84 sensor. For the parameter setting P0601 = 0,1, the motor temperature is calculated / estimated using the thermal motor model.

If the frequency inverter is permanently supplied with an external 24V voltage, then the motor temperature is also tracked/corrected using the motor temperature time constant – even when the line supply voltage is switched-out.

MICROMASTER 440

45

Operating Instructions (Compact)

Page 45
Image 45
Siemens 440 Inverter protection, Motor protection, Inverter overload reaction, Inverter temperature warning