SkyView System Installation Guide - Dynon Avionics

SV-EMS-220/221 Installation and ConfigurationCoolant Temperature SensorThe coolant temperature sensor may be connected to any general purpose input pin on the SV-EMS-220/221’s D37.The coolant temperature sensor needs to be installed according to the directions of yourengine’s manufacturer. Dynon Avionics sells temperature sensors with both 5/8-18 UNF (DynonP/N 100409-001) and 1/8-27 NPT (Dynon P/N 100409-000) threads; these are the same asthose used by the oil temperature inputs. If neither of these threads matches those in yourcoolant line, you will need to use adapters or drill/tap your own. Using a crush washer betweenthe sensor and the mating line, screw the sensor into the fitting. Do not over tighten.Route the wire from the desired general purpose input pin on the SV-EMS-220/221’s EMS 37-pin Main Sensor Harness to where the coolant temperature sensor is mounted. When routingthe wires, make sure that they are secured, so they will not shift position due to vibration. Strip¼” of insulation off the end of the wire. Crimp a #10 ring terminal onto the end of the wire.Ensure that a good connection is made between the wire and the connector. Unscrew the nutfrom the stud on the coolant temperature sensor. Slip the ring terminal onto the stud andsecure the nut over it.Note: If you are converting a Dynon D10/D100 product installation to a SkyView installation,you should remove any resistor that is connected to the existing coolant pressure sensor. It isnot needed when used with SkyView.Rotax Pre-installed Coolant Temperature Sensor: Wire the coolant temperature sensor in thesame way as shown above for the Dynon-supplied sensor.General Purpose Temperature SensorAny temperature sensor provided by Dynon may be utilized as a general purpose temperaturesensor on any general purpose input pin on the SV-EMS-220/221’s D37.For example, you may connect an SV-OAT-340 probe and configure it as a general purposethermometer (e.g., for cabin temperature). Connect one of the wires to the input pin, and theother wire to any available EMS GROUND.ContactsContacts may be connected to any general purpose input pin on the SV-EMS-220/221’s D37. Thenumber of contacts in your SkyView system is only limited to the number of unused generalpurpose input pins on the connector.Dynon Avionics does not sell contacts or switches.Contacts are used for a variety of purposes, such as monitoring canopy closure. The EMSfirmware reads the voltage state of general purpose inputs. To configure them as contacts, usetwo voltage ranges in your sensor setup. Set one to 0-2V, and the other from 2-5V. SkyView willthen report whether each input is open (no connection to ground, which is the 2-5V state) orclosed (connection to ground, which is the 0-2V state). You must ensure that when closed, the7-50 SkyView System Installation Guide - Revision O