Timer Setting - LIND DC Power Adapters Operating Instructions Manual

Description of the Ruggedized Timer (RSDT)
The RSDT protects the automobile battery from over discharge by shutting OFF loads a preset time
after the engine is shut down or when the battery is discharged to a low voltage level. The RSDT also
protects radio or computer equipment from damage due to low or high input voltage as experienced
with alternator failure or improper voltage jump-starts.
An ignition switch input is provided as an optional activation method. This method is recommend-
ed for emergency vehicles or when the vehicle may be idling for long periods with heavy electrical
loads. The RSDT is normally activated by sensing the alternator charge voltage level applied to the
battery. When the alternator stops charging, the timed sequence is started.
Timer Start
The timer contacts will close when the engine is started and the alternator is charging the battery
(battery voltage exceeds 13.5 [27] volts). SDT timing will start when the engine is turned OFF and
the battery voltage decreases to below 13 [26] volts.
Optional connection of the IGN terminal will result in the timer starting when the ignition switch
is opened.
Note - If the IGN terminal is connected to the accessories position of the ignition switch, the loads
will be energized with the key in the accessories position.
*Special Note: If the vehicle electrical system does not exceed 13.5 VDC with the vehicle running,
the "IGN" terminal connection must be used or incorrect Ruggedized Timer operation will occur.

Timer Setting

The RSDT delay time is factory set and is not adjustable. Models with delay times from seconds to
hours are available. Contact Lind to discuss your needs.
Battery Voltage Sensing turn-on threshold:
Battery Voltage Sensing timer start threshold:
Ignition ON threshold (if used):
Ignition OFF threshold(if used):
LED Flash rate in timing mode:
High Battery Voltage disconnect threshold:
Low Battery Voltage disconnect threshold:
Low Battery Voltage disconnect delay:
Input voltage range:
Maximum output current:
Current draw in OFF mode:
Current draw in ON/TIMING mode:
SHUT DOWN TIMER SPECIFICATIONS
>13.5[27] V
<13.0[26] V
>5[10]Volts
<2.5 [5]Volts
2 seconds
>18[36]Volts
<10.5[21] V
>10 seconds
9-18[18-36] V
20 A
6 mA
60 mA