Appendix D - Immobilizer And Gradual Stop - Starcom Systems Helios User's Manual Manual

Helios Users Guide
Appendix D – Immobilizer and Gradual Stop
NOTE: Check the vehicle voltage (12 V or 24 V) before installation and use the
proper voltage relays.
Helios can bring the vehicle to a gradual stop when necessary. For example, if
the vehicle is reported stolen, the control center can issue a Gradual Stop
command.
When there is no alarm, the Immobilizer/Gradual Stop BLUE cable on 24-pin
Helios wire harness (Pin 1) grounds the coil No. 85 (see diagram below) of the
external relay. In this case, the relay powers the vehicle starter or fuel pump
via pin No. 87 (see diagram below).
When the Helios alarm is activated, the Immobilizer/Gradual Stop BLUE cable
on 24-pin Helios wire harness (Pin 1) toggles the ground to the relay coil. As
the duty cycle of pin 1 changes, the coil becomes gradually deactivated for
longer and longer intervals until it is fully disconnected from ground.
Consequently, the starter or fuel pump gradually becomes inactive, bringing
the vehicle to a gradual stop.
www.starcomgpsglobal.com 137