Load Dump / Braking Chopper Controller
JCS Network Configuration
structure.yaml Configuration
| type | dev_braking_chopper |
| Supports processes | no |
| Supports device rate | no |
Signals - From Device
| Signal name | Type | Required | Description |
|---|---|---|---|
| op_state | uint8 | automatic | Device operational state bit field |
| duty | float32 | optional | Actuation duty cycle |
| v_dc_slow | float32 | optional | Slow filtered reference DC bus voltage (V) |
| v_dc | float32 | optional | DC bus voltage (V) |
| t_0 | float32 | optional | Onboard temperature sensor 0 (degC) |
| an_0 | float32 | optional | External analog input (external temperature) - Signal may be renamed |
| p_dumped | float32 | optional | Power dumped by resistor (W) |
Note: JCS Host automatically maps op_state as a full rate signal.
Bitfields
Signal: op_state
| Bit | Description |
|---|---|
| 0 - 2 | Reserved for JCS |
| 3 | Temperature warning flag Set when any temperature measurement exceeds the warning limit |
| 4 | Output clamped flag Set if output is clamped due to over temperature |
| 5 | Analog warning flag. Set when any analog channel exceeds it's warning limit. |
| 6 | DC bus voltage warning Set if DC bus voltage goes over or under the warning limit. |
| 7 | DC bus voltage exceeds controllable range Set if DC bus voltage continues to rise after reaching maximum duty cycle Typically means number of load dump controllers or load resistor value is not sufficient to dissipate the DC bus energy. |
Signals - To Device
Load dump controller device does not receive any signals