Door Open (DS1)
system
Description
DS1 switch was activated for more than five seconds; may be alarm only, alarm and force low engine speed, or alarm and shutdown.
Activation Conditions
DS1 is set to trigger an alarm if the switch is activated (opened or closed, depending on switch type) for more than five seconds.
Unit Behavior
May be configured as alarm only, alarm and force low engine speed, or alarm and shutdown.
Reset Conditions
Alarm Only: Auto reset after the switch has deactivated for more than five seconds. Shutdown: Auto reset after three minutes (minimum off time for door open condition) and the switch has deactivated for more than five seconds.
Corrective Actions
If a switch is installed: 1. Determine What DS1 is Activated By: DS1 may be connected to a compartment door or some other device. Locate the device used as DS1. 2. Check to See if DS1 has Activated: Inspect device used to activate DS1. For example, compartment door must be closed and switch must be deactivated. 3. Check Configuration for DS1: Verify that Configuration is set for the type of switch being used (i.e. when switch is activated, switch contacts are closed; etc). Configuration must agree with switch type. Refer to Section 5.2.3. 4. Check Wiring a. Visually inspect wiring to DS1 to make sure it is connected. b. Visually inspect condition of switch. It must not be damaged, wet, corroded, etc. c. Check circuit (see wiring schematic). With the switch contacts closed, check for minimum 11 VDC from 1-2MSM-13, through the wiring and switch back to 1-2MSM-25. 5. Temporary Solution Tip: In the event of a defective switch that can not be repaired or replaced and the switch is forcing the unit into a shutdown or low speed, this action may be temporarily overridden by setting the OVERRIDE DOOR SWITCH SHUTDOWN Functional Parameter to YES. If a switch is not installed: 6. Check Configurations: Any switch/sensor not present in the unit should not be Configured “ON”. Correct Configurations. 7. Check Connector: Locate and inspect the DS or REM 10-position connector for optional sensors and switches (see wiring schematic). Connector must have cap on. No corrosion or moisture inside connector. If there is a problem with the DS connector and no switch is installed, the connector may be removed and both wires separated, terminated and insulated with heat shrink. If there is no DS connector, there is a problem with the REM connector and there are no remote sensors or switches in the unit, the connector may be removed and each individual wire separated from the others, terminated and insulated with heat shrink.