Removed from:
Servo inverter i950 from V01.02.03
Behavior of the new version:
When the temperature contact (TKO) is closed, the temperature for the resistance value 0 Ohm is now displayed, as expected, according to the set temperature sensor characteristic curve.
Per parameterization of the specific temperature sensor characteristic curve (0x2D49:1=[3], the detected temperature with closed contact (0 Ohm) can be set to ea selected operating state of the motor, e.g. to the motor temperature that is set when the machine is operating at full capacity.
Description of the behavior:
When Use of a temperature normally closed contact (TKO) instead of a continuous temperature sensor (e.g.B.: KTY, PT1000) the value -666°C is displayed when the contact is closed fixed and not the temperature calculated according to the entered characteristic curve for approx. 0 Ohm.
Under what conditions does the behavior occur?- Use of a TKO and
- User-specific characteristic curve with a resistance value < 122 Ohm.
Affected products:
Servo-Inverter i950
Short-term measures:
None.
Rating/Recommendations:
The drive controller can be operated despite the described behavior, da the monitoring of the motor temperature does not respond - as intended for this configuration with TKO . Due to the principle, the current motor temperature cannot be determined with a simple temperature normally closed contact (TKO) and therefore cannot be used for display purposes.
Note:
When using a TKO, please note that the TKO must have double or reinforced basic insulation when connected via the encoder cable, in order to ensure sufficient protection against electric shock.
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