Installation guide

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SV-EMS-220/221 Installation and Configuration

7-60 SkyView System Installation Guide - Revision R

Hobbs time is a simple timer that runs whenever the oil pressure is above 15 PSI or the engine

is above 0 RPM.

If you have connected an External Alarm Light to SV-EMS-220/221 pin 29, the Alarm Light

setting determines how the light behaves after alarm acknowledgement. It can be set to either

SOLIID AFTER ACK, which leaves the light lit continuously after acknowledgement (until the

alarm condition ceases) or OFF AFTER ACK, which turns the light off after an alarm has been

acknowledged.

Rotax 912 Behavior

Setting ENGINE TYPE to ROTAX 912 pre-configures some engine settings for a Rotax 912 engine.

SkyView will automatically configure and dynamically change the oil temperature and

tachometer scales and alert thresholds in accordance with Rotax’s recommended ranges,

described in detail below. When this mode is selected, EMS SETUP > SENSOR SETUP > OIL

TEMPERATURE AND TACHOMETER settings are unavailable.

Tachometer for Rotax 912:

When OIL TEMP < 120ºF, the TACHOMETER displays these ranges:

 0-1400 and 4000-6000 RPM in RED

 1400-1800 and 2500-4000 RPM in YELLOW

 1800-2500 RPM in GREEN

When OIL TEMP > 120ºF, the TACHOMETER displays different ranges:

 0-1400 and 5800-6000 RPM in RED

 1400-1800 and 5500-5800 RPM in YELLOW

 1800-5500 RPM in GREEN

At 0 RPM, tachometer alerting is inhibited. When RPM advances above 0, the tachometer alert

is inhibited for 10 seconds to avoid nuisance alarms as the engine starts.

The alarm type for the tachometer is the “self-clearing” type.

Oil Temperature Gauge for Rotax 912:

When OIL TEMP < 190ºF, the OIL TEMP gauge displays these ranges:

 100-120 and 230-266º F in YELLOW

 120-190º F in GREEN if OIL TEMP has been above 190º F “more recently” than OIL TEMP was

below 120º F; otherwise 120-190º F is displayed in BLACK OUTLINED IN WHITE

 190-230º F in GREEN

 266-280º F in RED.

When OIL TEMP is > 190º F, the OIL TEMP gauge will display different ranges:

 100-120 and 230-266º F in YELLOW

 120-230º F in GREEN

 266-280º F in RED