Functionality
62 USER MANUAL FPC 200 - 3/2017
initiated. The current readout is performed at exact
time of CB contact separation by taking into account a
user definable parameter CB operation time.
2.6.1.7.1 Readout
Measurements are accessed via:
HMI diagnostic [4.2.4.1.3],
MiQen software,
Communication link.
The value can be reset in counters section of CB.
2.6.1.8 Bay
Interlocking bay is intended to allow or block operation
of CB by using DI signals. Bay restrictions influence
manual and remote commands excluding trip signals
registered for tripping CB.
2.6.1.8.1 Associated digital inputs
Allowing executing of CB open command.
Inhibition of CB open command.
Allowing executing of CB close command.
Inhibition of CB close command.
Table 55 Associated digital input signals.
2.6.1.9 Status
Interlocking status inhibit executing of the command if
the CB is already in the same position as the command
demands.
To use this function properly, it is necessary
that CB position is known to the device.
2.6.1.10 Circuit breaker failure (CBFP)
This function is designed to detect when a breaker does
not open when a trip is sent. User defined delay timer is
started every time trip command is sent to trip relay
[4.2.4.5.7, relay mapping section]. In case a fault
condition is not cleared in that time, the CBFP open
command is initiated.
Fault
Fault end
CBFP open command
Trip open command
Fault start
Fault start
CBFP delay
Minimal pulse Minimal pulse
Figure 2.37 Example of CBFP operation.
2.6.1.11 CB Ready
CB ready is intended to indicate the ready status of
circuit breaker. Multiple DI signals can be assigned to
indicate ready status. This function does not prevent
manual command operation to CB but it serves as the
interlocking for AR function [2.6.3].
2.6.1.12 Lockout Relay ANSI 86LR/94
Lockout relay function if activated prevents closing a CB
by any operation after it was tripped by a protection. If
AR function [2.6.3] is active, the lockout will engage
after a definite trip block signal is present.
Lockout can be reset only manually by using reset
lockout function on HMI, located in Reset/clear menu
[4.2.4.6].
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