Parker Vansco VMM1210, User Manual, Page: 43 / 80

User Guide 33
Outputs
4.3. High-Side Output Diagnostics and Fault
Detection
Each high-side output has the ability to report many different fault conditions.
The types of faults that are reported are determined by the configuration of your
high-side outputs, and this configuration must be considered when writing the
application software.
4.3.1. Over Current Fault Protection
Each output is capable of shutting down in the event that the output current goes
higher than the over current shutdown set point for the module.
The over current set point is programmable via the VMM Software. The value is
programmable from 12 A down to 6 A on a module by module basis. A fault is
reported as a flashing output LED and via CAN/J1939 messages.
4.3.2. Short to Ground Fault Protection
Each output, OUTPUT1_10A_HS to OUTPUT8_10A_HS, is capable of shutting
down in the event that the output current goes higher than approximately 45 A.
Each output, OUTPUT9_3A to OUTPUT10_3A, is capable of shutting down in
the event that the output current goes higher than approximately 8 A, when
configured as high-side outputs.
A fault is reported as a flashing output LED and via CAN/J1939 messages.
4.3.3. Short to Power Fault Protection
Each output is capable of detecting a short circuit to battery power when the
output is in the off (inactive) state.
A fault is reported as a flashing output LED and via CAN/J1939 messages.
4.3.4. Open Load Detection
Each output is capable of detecting open loads when the output is in the off
(inactive) state. Outputs OUTPUT9_3A to OUTPUT10_3A must be configured as
high-side outputs to have this functionality.