Basler BE1-CDS220, Instruction Manual

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13-74 Testing And Maintenance BE1-CDS220
Table 13-89. Binary Group Control Selection Test Commands
Command Purpose
A= Gain access
CS-43=1 Selects setting group 1 for operation
CO-43=1 Executes setting group 1 for operation (D0=1)
CS-43=0 Deselects setting group 1 for operation
CO-43=0 Executes Deselecting setting group 1 for operation
CS-143=1 Selects setting group 2 for operation
CO-143=1 Executes setting group 2 for operation (D1=1)
CS-43=1 Selects setting group 3 for operation
CO-43=1 Executes setting group 3 for operation (D0=1 and
D1=1)
E Exit
Step 4. Verify that the appropriate setting groups became active and relay outputs OUT1 through
OUT3 closed in accordance with the discrete inputs of Table 13-89. Refer to Step 3 for more
information on verifying active setting groups.
MAINTENANCE
BE1-CDS220 Current Differential Systems require no preventive maintenance. The fully numeric design of
the BE1-CDS contains no internal jumpers or mechanical settings except for contact sensing ranges. It
also requires no calibration. Testing, however, should be performed according to scheduled practices.
The BE1-CDS can be fully drawn out of the case. When the drawout assembly is removed, the current
transformer input circuits are automatically shorted by internal case contacts. The case contains no
components that are likely to require service; all critical components are contained in the drawout
assembly. When removing the drawout assembly from the case, care should be taken to prevent
electrostatic discharge (ESD) and mechanical damage.
There is no need to disturb the circuit interconnections within the drawout assembly. Repair of the drawout
assembly by replacement of individual circuit boards is not recommended. The printed circuit boards are
constructed using surface-mount technology and are not intended to be field serviceable.
If a relay failure occurs in a critical application without sufficient redundancy, protection can be restored by
inserting a spare relay in the mounted and wired case of the relay requiring service. The drawout
assembly requiring service can then be returned to the factory in the case from the spare relay. If a spare
case isn’t available, care should be used when packing the drawout assembly for shipment. Use antistatic
packing material that prevents mechanical damage during transit.
Before returning the drawout assembly for repair, contact the Basler Electric Technical Services
Department at 618-654-2341 for a return authorization number.