Parameter Description

Issue 01/06

r0036

CO:Inverter overload utilization

 

Min:

-

 

Datatype: Float

Unit: %

Def:

-

 

P-Group: INVERTER

 

Max:

-

Displays inverter overload utilization calculated via I2t model.

Level

4

The actual I2t value relative to the max. possible I2t value supplies utilization in [%].

If the current exceeds the threshold for P0294 (inverter I2t overload warning), alarm A0505 (inverter I2t) is generated and the output current of the inverter reduced via P0290 (inverter overload reaction).

If 100 % utilization is exceeded, alarm F0005 (inverter I2t) is tripped.

Example:

Normalized output current

r0027

r0207

100 %

Reaction via P0290 Default: "current reduction"

t

i2t [%] r0036

P0294 (95 %)

t

A0505

1

0

 

 

t

 

 

Dependency:

r0036 > 0:

If the nominal current of the inverter is exceed, utilization will be displayed. Otherwise, 0 % utilization is displayed.

r0037[5]

CO: Inverter temperature [°C]

 

Min:

-

 

Datatype: Float

Unit: °C

Def:

-

 

P-Group: INVERTER

 

Max:

-

Level

3

Displays measured heatsink temperature and calculated junction temperature of IGBTs based on thermal model.

Index:

r0037[0] : Measured heat sink temperature

r0037[1] : Chip temperature

r0037[2] : Rectifier temperature

r0037[3] : Inverter ambient temperature

r0037[4] : Control board temperature

r0038

CO: Act. power factor

 

Min:

-

 

Datatype: Float

Unit: -

Def:

-

 

P-Group: CONTROL

 

Max:

-

Level

3

Displays actual power factor.

Dependency:

Applies when V/f control is selected in P1300 (control mode); otherwise, the display shows the value 1.

r0039

CO: Energy consumpt. meter [kWh]

 

Min:

-

 

Datatype: Float

Unit: kWh

Def:

-

 

P-Group: INVERTER

 

Max:

-

Level

2

Displays electrical energy used by inverter since display was last reset (see P0040 - reset energy consumption meter).

t ac t

t act

r0039 = ∫ PW dt =

3 u i cosϕ ⋅ dt

0

0

Dependency:

Value is reset when P0040 = 1 (reset energy consumption meter).

32

MICROMASTER 440 Parameter List

6SE6400-5BB00-0BP0

Page 32
Image 32
Siemens 440 manual R0036 COInverter overload utilization, R00375 CO Inverter temperature C, R0038 CO Act. power factor