American Magnetics 12200PS DC Power Supply (CE-Marked) - Manual (Page 45)

OPERATING MANUAL LOCAL OPERATION
Release 1.0 (98/07) 3-11
3.7.3 Troubleshooting for Operators
Use the checks in Table 3.7-1 to ensure that the power supply is configured and connected for normal operation.
Abbreviated References Used in Table
ACF AC fail
OTP over temperature protection
OVP over voltage protection
PCB printed circuit board
PFC power factor correction
REM remote mode
S/D shutdown
V volts
Table 3.7-1 User Diagnostics
Symptom Check Further Checks and Corrections
No output and the
display is blank. Is input voltage within specified
range? Connect to appropriate voltage source.
See Section 2.5.
Power switch ON? Turn on power.
Internal circuit? See your service technician.
No output but the display
turns on. OVP LED turned on? See Section 3.3.
Front panel S/D LED turned on? See Section 3.4.
OTP LED turned on? See Section 3.6.
Current limit set to zero? See Section 3.2.
Voltage control set to zero? See Section 3.2.
REM LED turned on? If using remote analog control, check your
analog programming source (Section 4). If
not, refer to your digital interface manual.
Is front panel ACF LED turned on? Connect unit to AC supply in specified
range. See Section 2.5.
Internal circuit. See your service technician.
Output not adjustable. Is unit in current limit mode? (Red
Current Mode LED turned on.) Turn current knob clockwise to increase
current limit. Reduce load if current is at
maximum. See Section 3.2.
Is unit in remote mode? (Green REM
LED turned on.) If using remote analog control, check your
analog programming source (Section 4). If
not, refer to your digital interface manual.
Is unit at maximum voltage or current
limit? Reduce load for lower voltage or current
requirement.
Output voltage
fluctuating or regulation
poor. Is unit at current limit? Increase current limit setting or reduce
load. See Section 3.2.
Is input voltage within specified
range? Connect to appropriate AC voltage source.
See Section 2.5.
Are sense lines connected? See Section 2.7 Load Connection and
Section 2.8 Local and Remote Sensing.
Is unit under remote analog control? Ensure program source is stable.
Internal circuit. See your service technician.
Output oscillating. Internal circuit. See your service technician.