ABB RELION REX640 Technical Manual page 1374

Section 9
Control functions
1368
Inputs
ITL_BYPASS ENA_DCCLOSE
ENA_DCOPEN
ENA_ESCLOSE
ENA_ESOPEN
0 = False 1 = True
1 = True 0 = False
1 = True 0 = False
1 = True 1 = True
1 = True 1 = True
However, the enabled outputs also depend on the actual position of the switch,
according to Figure 728
based on switch position or motor in progress always overrides the enabled output
regardless of the status of enable, block and interlock bypass inputs.
For two-position switches, the enabling outputs of the opposite switch type are
disabled regardless of the input status. For example, if the switch type is earthing
switch, DCCLOSE_ENAD and DCOPEN_ENAD are forced to FALSE.
Operation of the three-position switch is permitted only when the
circuit breaker is in open position. The closed circuit breaker
information can be connected to the BLK inputs in Application
Configuration.
Various operations
The required operation command is available via communication, binary inputs or
LHMI. As a prerequisite for control commands, there are enabling and blocking
functionalities for all the operations. If the control command is executed against the
blocking or if the enabling of the corresponding command is not valid, the function
generates an error message. The command operations are requested through binary
inputs AU_DCOPEN, AU_DCCLOSE, AU_ESOPEN and AU_ESCLOSE. The
requested operation is possible provided the apparatus is not blocked by the
interlocking logic and no other previous request is active.
When the function block is selected for performing any of the operations locally from
the HMI, the output SELECTED is activated. Once the function is selected, the
command for execution of operation should be issued before Select timeout time
lapses.
The function contains two operation counters: disconnector counter Operation
counter DC and earthing switch counter Operation counter ES. The first one indicates
each disconnector opening state and the latter one indicates each earthing switch
opening state. The counter values are resettable and writable and stored in a
nonvolatile memory.
BLK_DCCLOSE
BLK_DCOPEN
BLK_ESCLOSE
BLK_ESOPEN
1 = True
0 = False
1 = True
0 = False
1 = True
and if any motor operation is ongoing. Internal blocking
1MRS759142 C
Outputs
DCCLOSE_ENAD
DCOPEN_ENAD
ESCLOSE_ENAD
ESOPEN_ENAD
0 = False
1 = True
0 = False
1 = True
0 = False
REX640
Technical Manual