Process image

TwinCAT displays the process image in a tree structure.

Process image 1:

Terminal overtemperature
If TRUE: The internal temperature is higher than the limit value:

  • Factory setting: 80 °C
  • Parameter 8000:14

I2T error
If TRUE: The temperature of the brake resistor is higher than the limit value:

  • Factory setting: 120 °C
  • Parameter 8000:19

The chopper is disabled if the overtemperature protection has not been disabled.

I2T warning
If TRUE: The temperature of the brake resistor is higher than the limit value:

  • Factory setting: 100 °C
  • Parameter 8000:18

Overvoltage
If TRUE: The voltage UP is higher than the overvoltage limit value:

  • Factory setting: 50 V
  • Parameter 8000:11

The chopper is active if it is not being inhibited by a protective function.

Undervoltage
If TRUE: The voltage UP is lower than the undervoltage limit value:

  • Factory setting: 22 V
  • Parameter 8000:12

Chopper on
If TRUE: The chopper is active. The brake resistor is currently converting electrical energy into thermal energy.

Overcurrent Protection
If TRUE: The chopper was disabled by the overcurrent protection.

Input cycle counter

DC link voltage
The measured value of the voltage UP. Unit: mV

Resistor Current
The measured value of the current through the brake resistor. Unit: mA.

Duty Cycle
The current mark-to-space ratio of the chopper. Unit: %.

Optional process data objects

You can add a further process data object to the process image:

Process image 2:

I2T load factor
The current temperature of the brake resistor. Unit: °C.