MSD 7530T Programmable Digital-7 Ignition Control Installation - Manual (Page 6)

6 INSTALLATION INSTRUCTIONS
M S D
• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
REV LIMITS
Up to three different rev limits can be programmed in 100 rpm increments.
RevBurn: Burnout Rev Limit. This limit is activated when 12 volts are applied to the Light Blue
wire. It is adjustable from 2,000 to 12,500 rpm.
RevLaunch: Launch Rev Limit. This limit is activated when 12 volts are applied to the Dark
Blue wire. It is adjustable from 2,000 to 12,500 rpm. This Limit has priority over all the other
rev limits.
RevMax: Max Speed Rev Limit. This is the overrev limit and is active whenever the Launch
and Holeshot limits are off.
OutCam: Select either a Cam Sync output or a Rev Limiting output that can be used with
MSD components that use rpm modules for the rev limit.
AdjOff: This program enables an automatic compensating rev limiter that will correct trigger
input offsets and variables. It can be turned On or Off.
RPM: Adjustable in 100 rpm increments from 2,000 – 12,500.
TIMED SAFETY REV LIMIT
This provides a time activated rpm limit ramp that is designed to work as a safe shutdown. The ramp
will lower the rpm to an adjustable amount, within two seconds after it is activated. The activation point
ranges from 1-12.5 seconds after the burnout and the shutdown rpm value can be set from 1000-
12,500 rpm. The time before the safety RPM Limit ramp is activated begins when the Dark Blue wire
is released from 12 volts, and only if the programmed Launch Rev Limit rpm has been acheived
on the starting line.
START RETARD
Program an amount of retard that will occur while the engine is cranking. This helps reduce the load
on the starter for easier cranking. It is adjustable from 0° - 25° in 1° increments. This is an automatic
feature and will enable below 500 rpm and will deactivate when the engine reaches above 800 rpm.
Default is 10°.
LAUNCH RETARD
This is the time based retard ramp. It can be programmed from 0°-15° in 0.1° increments and from
0-2.5 seconds. When the Dark Blue Launch/Reset wire is connected to 12 volts, the retard value is
activated and is added to the retard sum. When 12 volts are removed from the Dark Blue wire, the
retard value begins to ramp up to 0° over the programmed time. Once the time is over, the retard will
not be activated again.
TCD
The PN 7530T Ignition incorporates a unique Traction Control Detection (TCD) circuit. This software
code monitors the magnetic pickup circuit for changes that would only come from an installed traction
control device that would modify the signal from the mag pickup. If a modification is sensed in this
circuit an Alert will be set and the status LED will flash a Code 4. This Alert will continue to flash until
the ignition is kept turned On for 24 hours in order to reset. A 4000 rpm TCD Rev Limit is activated
until the 24 hour TCD timer is elapsed or reset by an NHRA official.