INSTRUCTION MANUAL
EVS300W/600W
Series
TDKLambda
<Page>
46. Output Constant Current Setting Accuracy
Output constant current of EVS300W can be set to preset value by output constant current adjustment rotary
switch. Output voltage droops with constant current within ±10% accuracy of rated output current.
Output constant current of EVS600W can be set to preset value by output constant current adjustment trimmer.
Output voltage droops with constant current within ±10% accuracy of rated output current.
47. Output Constant Current Adjustment Method
EVS300W
Rotary switch S1 can set output constant current value.
During setting the output constant current adjustment rotary switch, power off the product.
Do not touch the adjust trimmer VR1 next to the rotary switch because the trimmer is fixed. Output constant
current adjustment rotary switch is primary side component.
When the product is installed into equipment, the installation should be done by staff, who is instructed on
safety standard and has experiences in adjustment works.
Method of Constant Current Setting
(1)Power off the product and set constant current to required value by output constant current adjustment
rotary switch.
Refer to
“
■
EVS300W Output Constant Current Value Setting” to set the position of the rotary switch.
Refer to
“
■
EVS300W Output Constant Current Set List” on the relation between the rotary switch position
and constant current value.
Set rotary switch to the position which corresponds to required constant current value.
Confirm the direction of arrow groove which indicates position No..
(2)Increase load than output constant current set value and confirm output constant current value become same
as set value. In addition, the output voltage decreases at constant current operation.
The location for EVS300W Output Constant Current Value Setting
S1 : Output constant current adjustment rotary switch.
Minimum Position
“
No.2
”
Maximum Position
“
No.9
”
S1 is set at position No.9
VR1 : Adjust trimmer VR1 for factory setting only.
Do not touch adjust trimmer VR1 because this is for factory setting only. If the adjust trimmer is
forced to be rotated, the product may get some damages.
(Adjust trimmer is fixed with adhesive.)
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