back wires .25" prior to installation.
Low Battery Voltage disconnect delay:
tem +12 volts through a suitable fuse, using appropriately sized
-Splashproofing
On/Timing LED
Off LED
>18(36)Volts
volts). SDT timing will start when the engine is turned OFF and the
Height
reduces the delay time by a factor of 100 to allow a quick test of the
due to low or high input voltage as experienced with alternator fail-
Low Battery Voltage disconnect threshold:
flash at the normal rate indicating normal timing in OVER-RIDE
equipment at a preset delay time after the automobile engine is
· The GND and IGN connections carry very little current (< .1
x 100
+12 (+24)VDC In Terminal
Current draw in OFF mode:
starting when the ignition switch is opened. Note - If the IGN termi-
nal of the SDT to the ignition switch terminal that goes to zero volts
· Connect the GND terminal to a good chassis ground. The SDT
IGN
Optional connection of the IGN terminal will result in the timer
8 seconds. The Red LED will come ON.
4.8 "
INSTALLATION
-Replaceable Output Fuses
The timer contacts will close when the engine is started and the
The shut down delay time is set with the Time Delay Potentiom-
system timing function.
· The SDT terminal marked +BAT must be connected to the sys-
Adj. Time Potentiometer
vidually between the SDT and the load.
to the desired delay.
Over-ride Mode time setting:
-50° to 75° C
+BATTERY
out in 36 seconds. The Red LED will come ON when the outputs
wire. Better protection is provided if multiple loads are fused indi-
The SDT protects the automobile battery from over discharge by
TO IGNITION SWITCH
Output Fuses
may be radios and computers or other electrical loads (lights and
second rate to indicate normal timing.
TO
The Shut Down Timer (SDT) is intended to shut down electrical
Test Switch
alternator is charging the battery (battery voltage exceeds 13.5 (27)
not start if the engine dies.
charged from an external source. The output loads should be
A unique feature of the Lind SDT is that it allows full testing of
(over-rides
Operation
Available Options:
nal is connected to the accessories position of the ignition switch,
Notes
2 seconds
0.5 seconds
FUSE - 30AMP MAX.
Note - When using the ignition switch option, the SDT period will
1. The SDT outputs will turn ON if the automobile battery is
GND
Ignition Off threshold(if used):
SHUT DOWN TIMER SPECIFICATIONS
quence is started.
applied to the battery. When the alternator goes OFF the timed se-
by a fuse rated at 15 amps max.
30A{15A ea.}
Timer Setting
Normal timing:
· Mount the SDT in a cool, dry place. An optional splashproof
Battery Voltage Sensing timer start threshold:
The SDT also protects radio or computer equipment from damage
the loads will be energized with the key in the accessories position.
Battery Voltage Sensing turn-on threshold:
eter on the face of the SDT. Point the arrow on the potentiometer
(model dependent)
2. The low voltage detection circuit has a 10 second delay to
Over-ride Switch
turned OFF when externally charging.
LIND
as an optional activation method but is not necessary. The SDT is
is applied to the loads.
Mounting holes
· Momentarily close the Test Switch. The Green LED will flash
Shut Down Timer
flashers).
· Loads are connected to either or both of the +OUT terminals.
9-18(18-36) V
Time Delay adjustment range:
Input voltage range:
2.8 "
turned OFF. This protects the battery and the equipment from dam-
Output Terminals
18 mA
<2.5 (5)Volts
Installation
(Optional)
(12 min.-18 hrs.)
wire .35" prior to insertion. Use #10 spade lugs on the screw termi-
(OPTIONAL)
vehicle electrical system and the loads to be controlled. The loads
is shut down or when the battery is discharged to a low voltage level.
ure or improper voltage jump-starts.
Current draw in ON/TIMING mode:
SDT shuts down the equipment. An ignition switch input is provided
· On models with the high current terminal block, strip back the
battery voltage decreases to below 13 (26) volts.
is powered from the +BAT input and this ground.
rapidly indicating fast test timing. Shut down will occur in 1/100
· For the ignition switch activation option, connect the IGN termi-
· With the engine running the Green LED will be ON and power
TO LOADS
Description of the Shut Down Timer (SDT)
95 mA
· Activation of the SDT timing period may be automatic by sensing
the system after installation. Momentary closure of the test switch
Ignition On threshold (if used):
rapidly indicating fast test timing. Shut down will occur in about
amp). Wire gauge is determined by mechanical suitability. Strip
Timer start
normally activated by sensing the alternator charge voltage level
>10 seconds
1.875"
>5(10)Volts
the battery voltage drop when the engine is turned OFF or by the
To Test
when the engine is turned OFF.
Set up
avoid load disconnection when starting the automobile.
(0 sec. - 4 hrs.)
<13.0(26) V
· Momentarily close the Test Switch. The Green LED will blink
ometer on the top of the SDT unit. A small screwdriver or key can be
<10.5(21) V
The SDT ON time after engine shut OFF is set with the potenti-
TO LOADS
Test Mode timing:
· Momentarily close the Over-ride Switch. The Green LED will
High Battery Voltage disconnect threshold:
with battery voltage lower than 10.5 (21)volts. The over-ride
-Alarm signal output (shutdown warning)
5.3 "
switch does not work if the output is already on.
used to set the potentiometer.
of the normal time set. With a 1 hour setting the SDT will time
>13.5(27) V
time adj. setting)
-----------------------------------------------------------------------------
mode. The over-ride switch will provide 12 minutes of additional
Test Mode speed up rate:
compartment. The SDT is connected between the +12 volt of the
turn OFF.
optional IGN connection to the ignition switch.
· Turn the engine OFF and the Green LED will flash at a 2
version is available to allow use of the timer in the vehicle engine
+OUT
TO VEHICLE GROUND
Maximum load: (Two output connections):
nal models.
+BAT
LED Flash rate in timing mode:
+OUT
operation after the normal time period has been completed even
(5 sec.-2 hrs.)
An emergency switch allows 12 minutes of operation after the
(20A{10A ea.}
Note - On some models, each output connection can be protected
Operating temperature
12 minutes
age due to over discharge or low input voltage.
shutting OFF up to 30 (20)amp loads at a preset time after the engine
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