1. PowerVision Configuration Studio 2.7.10319
2. PV780-Loader 2.3.20008
OS-2.720015
IX3212-30009.0
3. Microsoft Windows 7
4. When the Bulb Mode Setting is selected for the output channel, it behaves as a motor. I had an 2A max LED Light that could not be turned on and kept giving me an open circuit error. When the setting was switched to motor mode, the light turned on without problem.

Hi Jericho,

Our Engineering group double-checked and determined the documentation is correct on the motor/bulb mode being a 1 and 0 respectively.

LEDs have a very short inrush current that only lasts a few milliseconds so this is curious why the motor mode works but the lamp mode does not.

We will investigate further to see if we can come up with an explanation.

Bryan Wutzke, Market Manager

From the IX3212 PDM reference manual...
4.3.1.4 Motor/Lamp Mode
The over-current profile can be selected depending on the type of load. See the current profile in the figures below.

0 Lamp
1 Motor
Data Length: 1 byte
Resolution: 2 states / 1 byte 0 offset
Data Range: 0 to 1 Operational Range: same as data range
Type: Status (command)
PGN: PGN 61184 – Configure Output

Lamp filaments exhibit a high peak inrush current when first powered. A stair-shaped profile for the overcurrent protection is pre-programmed at the factory.

The lamp mode peak current is limited to 110 A nominally for 17.2 ms. The next level is 43.3 A for 137 ms. Finally, up to 15 A of continuous current is the maximum limit. If the limit is exceeded anywhere along the profile including a lower continuous current limit that may be set, the FET goes into protection mode.
DC motors or inductive loads such as relays exhibit a delayed inrush or stall current. A window-shaped profile for the overcurrent and overheating protection is pre-programmed at the factory.

The motor mode peak current is limited to 43.3 A nominally for up to 429 ms. The final level is set at up to 15 A continuous current. If the limit is exceeded anywhere along the profile including a lower continuous current limit that may be set, the FET goes into protection mode.
The Soft-Start function can be used in combination with the motor/lamp mode to affect the inrush current and prevent an over-current condition.

Jericho,

What are the other settings on the PDM output channel that is driving the LED light?
- Current limit
- Soft-start step size
- Automatic reset (over-current retry)

Bryan

In both Motor and Bulb mode:

Output Mode: High Side
Overcurrent Shutdown: 15A
Overcurrent Mode: Autonomous Retry
Loss of Communication Mode: Off
Power on Reset Value: Disabled
Soft Start Step Size: 100%

Here's a trace of CAN1 which has a PV780 and PDM. The PV780 is brodcasting switch states from CAN2.
Channel Output 1,3,4,5 are set to motor mode. The rest are set to bulb mode.