Basler DECS-150 Instruction Manual page 231

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Step 8. Verify that your DECS-150 is compatible with the current sensing transformer (1 A or 5 A
secondary) being used. For example, a current sensing transformer with a 1 ampere output
rating would produce very little droop if the DECS-150 has a 5 ampere current transformer
input. To check the current transformer input of your DECS-150, refer to the style chart in the
Introduction section.
If the current transformer input is incorrect, replace the current sensing transformer or the
DECS-150 for compatibility.
If the current transformer input is correct, proceed to Step 9.
Step 9. If the above steps fail to correct the malfunction, replace the DECS-150 unit.
No Voltage Matching
Step 1. Verify that Voltage Matching is enabled in BESTCOMSPlus software.
If not enabled, use the software to turn on voltage matching.
If voltage matching is enabled, proceed to Step 2.
Step 2. Verify that all connections are correct according to the Typical Connections section as required
for voltage matching.
If the interconnection is incorrect, reconnect according to the appropriate interconnect diagram.
If the interconnection is correct, proceed to Step 3.
Step 3. Verify that voltage matching is not disabled through BESTlogicPlus.
If voltage matching is not disabled, proceed to Step 2.
Step 4. Check for correct utility reference voltage on DECS-150 terminals B1 and B3.
If the interconnection is incorrect, reconnect according to the appropriate interconnect diagram.
If the interconnection is correct, check for open system fuses.
Verify that the potential sensing transformer, if used, is connected to DECS-150 terminals B1
and B3.
If potential sensing transformer connections are correct, proceed to Step 5.
Step 5. Verify that the Machine Output Voltage setpoint is within 10 percent of the measured utility bus
voltage.
If the setpoint is too low or too high, adjust the setpoint to the appropriate level.
If the setpoint is correct, proceed to Step 6.
Step 6. If the above steps fail to correct the voltage matching malfunction, replace the DECS-150.
Support
Contact the Basler Electric Technical Services Department at +1.618.654.2341 for troubleshooting
support or to receive a return authorization number.
DECS-150
27-7
Troubleshooting