6
SW1 is used to disable the Low Current Alarm. In order to disable the alarm this switch must be in the
on
position
(switch pushed up).
SW2-SW10 are used to set the battery type and number of cells. Only one of these switches should be set to
on at one time. If two switches are on at the same time, the charger will use the lower voltage of the two
settings. EX: On a 12V charger, SW2 (12NC) and SW8 (7LA) are both set to on. The output of the charger will
be set for 7LA.
SW12 is used to disable the Internal Temperature Compensation Probe. In order to disable the Internal Probe
this switch must be in the
on position
. If an external probe is to be used, the internal probe has to be disabled.
If the internal probe is not disabled, Temperature Compensation will not function correctly.
2.3
Adjustment Potentiometers
There are two adjustment potentiometers for customer adjustment. The Output Voltage Adjustment allows the
customer to fine tune the output voltage. Table 1 (DIP Switch Settings) on page 5 shows the approximate
range for voltage adjustment.
The current limit adjustment allows the user to adjust the maximum limit for the charger output current. This
value is adjustable between approximately 50 and 105% of the rated charger output. The access to the current
limit adjustment potentiometer is limited to prevent unintentional changes to the current limit calibration.
A clockwise adjustment increase the value of the potentiometer and a counter-clockwise adjustment decreases
the value.
WARNING:
Do
NOT
adjust the charger output voltage if the unit is in current limit (red Current Limit
LED will be illuminated) as this can cause damage to connected loads or batteries.
Summary of Contents for A75R
Page 13: ...9 Quick Start Guide ...
