Dynamic DX - General Features; Safety and Protection Features

No. 60027, Issue 4. January 1998
3 General Description4
3.1 General Features
The SLM has the following general features:
! Servo output capable of supplying 5 A continuous and 30 A peak to a 24 V
servo actuator.
! Fully DXBUS compatible.
! Two identical DXBUS sockets for Daisy Chain connection to the DX System.
! Powered by a 24 V wheelchair battery via the DXBUS connection, or directly
from the battery for high current applications.
! Fully programmable for optimum driving performance.
! Lighting outputs are TÜV approved when fitted with approved regulated power
supply (SLM-TÜV).
! Electromagnetically compatible:
- not susceptible to high levels of RFI
- emitting low levels of RFI
- protected against high levels of ESD.
! Compact case for mounting under the wheelchair seat.
3.2 Safety and Protection Features
The SLM has the following safety and protection features:
! Motor current limit and current limit timeout set to prevent overheating of
motors.
! Thermal protection to reduce current limit.
! Short circuit protection of all inputs and outputs except between motor and
battery negative while driving.
! Open circuit motor detection when not driving.
! Driving is inhibited if steering clutch is disengaged.
! Over voltage, under voltage and reverse battery protected.