Basler DECS-200 User Manual

DECS-200 Maintenance 8-1
SECTION 8 • MAINTENANCE
PREVENTIVE MAINTENANCE
The only preventive maintenance required for the DECS-200 is the periodic checking of DECS-200
connections to ensure that they are clean and tight.
WARRANTY AND REPAIR SERVICE
DECS-200 units are manufactured using state-of-the-art, surface-mount technology. As such, Basler
Electric recommends that no repair procedures be attempted by anyone other than Basler Electric.
The DECS-200 is warranted against defective material and workmanship for 18 months from the date of
shipment from Basler Electric. Units submitted for warranty repair should be returned to Basler Electric’s
Highland, Illinois facility, freight prepaid, with a complete description of the application and the reported
problem. Prearrangement with either the nearest Basler Electric sales office or with the Technical Sales
Support department at Basler Electric will assure the fastest possible turnaround time.
TROUBLESHOOTING
The following troubleshooting procedures assume the excitation system components are properly
matched, fully operational, and correctly connected. If you do not obtain the results that you expect from
the DECS-200, first check the programmable settings for the appropriate function.
DECS-200 Appears Inoperative
If the DECS-200 does not power up (no backlighting on front panel display), ensure that the control power
applied to the unit is at the correct level. If dc control power is being used, verify that the polarity is
correct. Units with style number XL have an input voltage range of 16 to 60 Vdc. Units with style number
XC have an input voltage range of 90 to 150 Vdc or 82 to 132 Vac (50/60 Hz). If the correct control power
is being applied, return the unit to Basler Electric as described under
Warranty and Repair Service .
Display Blank or Frozen
If the front panel display (LCD) is blank or frozen (does not scroll), remove control power for about 60
seconds and then reapply control power. If the problem occurred during software uploading, repeat the
upload procedures as described in the associated instructions. If the problem persists, return the unit to
Basler Electric as described under
Warranty and Repair Service .
Generator Voltage Does Not Build
Check the DECS-200 settings and system voltages for the following:
a. Generator potential transformer (PT) primary voltage
b. Generator PT secondary voltage
c. AC voltage on the DECS-200 operating (bridge) power terminals (C5 (A), C6 (B), and C7 (C))
Check the DECS-200 soft start bias and soft start time settings. If necessary, increase the generator soft
start bias and decrease the generator soft start time.
If the generator voltage still does not build, increase the value of Kg.
Temporarily disable the overexcitation limiter.
Low Generator Voltage in AVR Mode
Check the following DECS-200 settings and system parameters:
a. AVR voltage setpoint
b. Generator potential transformer (PT) primary voltage
NOTE
When both ac and dc control power is used, an isolation transformer must be
connected between the ac voltage source and the ac control power terminals of
the DECS-200.

Basler DECS-200 Specifications

General

Brand	Basler
Model	DECS-200
Category	Controller
Language	English