7
breakers if necessary) to power down the ignitions when not in use.
Note 5: Do not power the ignition ON when you have a ground battery charger connected to the
bus. Pulling the breaker will isolate the ignition when charging.
Note 6: Collect your tach signal from only one ignition unless your instrument has provisions for
two (separate) tach inputs. Unlike a magneto, E-MAGs produce a tach signal even when kill switch
is turned to OFF.
Note 7: Tach signal is a 3 pulse/rev, low true, 33% duty cycle, 10 to12-volt pulse - see Appendix 3.
E-
MAG’s tach output is a courtesy feature, unrelated to the ignition’s primary purpose. Due to the
variety of instrument options available, our ability to support and troubleshoot interface issues is
limited.
Note 8: Longer cable runs to a remote main battery* may need to access bus power through a
dedicated 16 AWG cable connected directly to the battery. This will avoid sharing a long power
cable with the starter motor, a combination that can exaggerate power dips during startup and
inhibit ignition operation when cranking.
*Typical in RV10s, some canards, and others.
Setup and Control Switches
1) Configuration Button
(“Button”) is located beneath a black plastic screw cap on the end face
of the ignition. The Button is used to set TC, move MIN/MAX setpoints, or change ignition DIR.
2) Mode Switch
(optional)
– Fixed Mode or Variable Mode can be selected by a single cockpit
Mode Switch that directs both left and right (Series 200) ignitions. Fixed Mode is enabled when
the Mode Switch applies a 1K bias resistance to the kill (p-lead) circuit(s). The Mode Switch
can serve one or two (Series 200) ignitions
.
The Mode Switch is required for all boosted
engines. For non-boosted engines the Mode Switch can be eliminated, in which case the
ignition will operate in Variable Mode only.
a)
Fixed Mode
- Mode
Switch “FIX” will fire plugs at the MIN firing position.
RPM must be
above cranking speeds
– i.e. you cannot start in Fixed Mode. [In FW V55 and after, Fixed
Mode starting is enabled]
b)
Variable Mode
-
Mode Switch “VAR” allows RPM and MAP inputs to select a plug firing
position between the MIN and MAX boundaries.
3)
Power Test Switch
- A cockpit bus power interrupt switch is used to test the ignition internal
alternator. A switchable circuit breaker or separate test switch can perform this function.
– see
Wiring Diagram
4)
Kill Switch
(p-lead switch) - The traditional cockpit ignition ON/OFF (Left/Right) Kill Switch is
unchanged. The Mode Switch does not interfere or alter Kill Switch operation. The Kill Switch
OFF position connects the E-MAG kill wire (p-lead) to ground. The ON position un-grounds the
kill wire.
Note: All connections from previous installations (tach, shower of sparks, etc.) must be
removed from kill switch wiring.