ABB 615 series Technical Manual page 968

Section 9
Control functions
962
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Figure 485: Condition for enabling the open request (OP_REQ) for 52
OPEN and CLOSE outputs
The EXE_OP output is activated when the open command is given (AU_OPEN, via
communication or from LHMI) and OPEN_ENAD signal is TRUE. In addition, the
protection trip commands can be routed through the 52 function by using the TRIP input.
When the TRIP input is TRUE, the EXE_OP output is activated immediately and
bypassing all enabling or blocking conditions.
The EXE_CL output is activated when the close command is given (AU_CLOSE, via
communication or from LHMI) and CLOSE_ENAD signal is TRUE. When the TRIP
input is "TRUE", CB closing is not allowed.
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Figure 486: OPEN and CLOSE outputs logic for 52
Opening and closing pulse widths
The pulse width type can be defined with the Adaptive pulse setting. The function provides
two modes to characterize the opening and closing pulse widths. When the Adaptive pulse
is set to "TRUE", it causes a variable pulse width, which means that the output pulse is
deactivated when the object state shows that the apparatus has entered the correct state. If
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615 series ANSI
Technical Manual