Datasheet

10 SIM23xx Motor Controller Datasheet Version 1.0 November 4, 2020
Always off: No USB, No CAN
Always On: USB Active, No CAN
Flashing On: No USB, CAN Enabled
Flashing Off: USB Active, CAN Enabled
FIGURE 10. Communication LED Flashing Patterns
Measured Amps
The controller includes Amps sensors in line with the motor terminals and on the battery ground terminals.
Both Motor Amps and Battery Amps are therefore measured with precision.
Safe Torque Off - STO
Safe Torque Off is a safe method for switching controller in a state where no torque is generated, regardless
whether the controller is operating normally or is faulty. When STO is enabled, two digital inputs, DIN3 and DIN4
are remapped as STO1 and STO2. The inputs are redundant and both must have a 6V to 30V signal present at the
same time in order for the Power MOSFETs to be energized. The controller will perform a self-check of the STO
circuit at every power on and every time the STO inputs go from any state to both high. Once the STO hardware
is verified to work, the controller will safely allow the motors to be energized. If either input is below 1V, the
controller’s outputs will be disabled. The STO circuit is verified and validated and can therefore be trusted instead
of external relays. See STO Manual for more information and maintenance instructions.
By factory default STO functionality is disabled. It must be enabled by removing the jumper located on the
controller’s PCB. STO functionality is only available in the T version of the controller.
6 to 30V
6 to 30V
STO1
STO2
High
Low
High
Low
STO1 STO2 Motors Output
Disabled
Disabled/Fault
Disabled/Fault
Enabled
Low Low
Low
Low
High
High High
High
FIGURE 11. STO input levels effects on controller output
The STO function is compliant to:
• IEC 61800-5-2:2007, SIL 3
• IEC 61508:2010, SIL 3
• IEC 62061:2005, SIL 3
• ISO 13849-1:2015, Category 3 Performance Level e
Important Warning
Activating STO does lead to no more torque generation on the motor. The motor will not be actively
stopped but run out. In case of a multiple fault in the power stage a rotation might occur.