Siemens CU240S DP Operations Instructions download pdf (Page 52)

Commissioning (software)

2.7 Commissioning modes

Control Units CU240S

2-32 Operating Instructions (Compact), 04/2006, A5E00766042B AA

2.7.8.4 Flow chart - Temperature Sensor

Temperature Sensor

Parameter Description (Factory setting: bold) Setting

P0601 = 0

P0601 = ?

Motor temperature sensor

0: No sensor (→ P0610)

1: PTC thermistor (→ P0604)

2: KTY84 (→ P0604)

P0604 = ? Threshold motor temperature

Enter the warning threshold for motor overtemperature protection. The trip temperature

(threshold) is where either the inverter is tripped or Imax is reduced (P0610) which is always

10 % above the warning threshold.

P0610 = 2 Motor I2t temperature reaction

Defines the reaction when the mtor temperature reaches the warning threshold.

0: No reaction, only a warning

1: Warning and I

max

reduced (this results in a reduced output frequency)

2: Warning and trip (F0011)

Temperature calculation without sensor

In the vector control mode (P1300 = 20/21/22/23) Temperature calculations is possible

without sensor. The following parameters have to be set.

Parameter Description (Factory setting: bold) Setting

P0621= 1 Motor temperature identification after restart

0: No identification

1: Temperature identification only at first "motor on" after power cycle

2: Temperature identification at each motor on.

P0622 = Motor magnetizing time for temperature identification after stator restistance identification

This parameter will be initialised with a value for one calculating cycle of the motor

temperature. It depends on the identified rotor time constant. Due to accuracy reasons this

calculation may be performed several times.

2.7.8.5 Flow chart - Command source

Selection of command source

The available command sources depend on the used CU.

Default setting on the control unit used the command source is set per default to different

values.

1 ... 51 52 53 ... 110

No comments

Siemens CU240S DP Operations Instructions Page 52