GE Developed IC3600KVSA1 as Zero Speed Relay Board under Mark I or II series. General Electric's Speedtronic turbine management systems, Mark I and Mark II, are both available. They were designed to serve five main purposes. These functions include limiting the turbine maximum output to within the unit's capability, protecting the turbine in the case of a non-recoverable system failure inside the system, and controlling the turbine output power over its load range. For a startup, the turbine control settings and auxiliaries must be sequenced. Failures in the gas turbine, its auxiliaries, and the control system are monitored and reported.