Sorensen SFA Series, Operation Manual

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Operation Sorensen SFA Series
3.1.1
S
HAFT
L
OCK
(O
PTION
)
This option replaces the standard control knob with a two-piece shaft lock. This
is installed over the current adjustment potentiometer shaft to prevent rotating
under conditions of shock, vibration, or accidental contact. For adjustment, the
following steps apply:
1. Loosen the shaft by rotating the outer locking nut counter-clockwise
with a 7/16-inch wrench.
2. Adjust the shaft with a flat screwdriver to the desired output level.
3. Tighten the outer locking nut, rotating clockwise, to approximately 5 LB-
in (0.56 N-m).
NOTE: Take care not to over-torque the outer nut. Should the cone nut
become loose or jammed with the outer locking nut, re-torque the cone nut with
a 1/2-inch wrench to approximately 15 LB-in (1.69 N-m).
Figure 3–3 Shaft Lock
CAUTION!
Never completely loosen the cone nut, or remove the shaft lock from the
chassis.
3.2
LOCAL OPERATION
The SFA Series power supply is shipped from the factory configured for local
current control and local voltage sensing. The ANALOG CONTROL connector
is supplied with a mating connector with remote ON/OFF jumpered for ON
(terminal 5 shorted to terminal 6).
Prior to turning the unit on, rotate the current potentiometer fully
counterclockwise (minimum output). Then, turn the power ON and adjust the
current to the desired output.
3-4 M550292-01 Rev C