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IB02602004E
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Instructional Literature
Effective: May 2008
Page
177
Instructions for the FP-6000 Protective Relay
9.2.1 Relay Test
The FP-6000 has provisions for testing the output relays
individually or as a group. From the front panel Test menu, use
the Operate Relays and Reset Relays menu functions to energize
and de-energize the relays. The same functionality is provided
via the communication interface. When a relay is energized using
the Relay Test function, it will remain energized until it is de-
energized through the Reset menu, Test menu or Remote Reset.
9.2.2 Disarm Trip
The FP-6000 relay can be disarmed to prevent operation of the
Trip 1 and Trip 2 output relays during testing. When the Disarm
Control System Configuration setting is Enabled (activated by
the “Set” pushbutton), the user can Disarm tripping using the
Test menu Arm/Disarm Trip function (activated by the “Test”
pushbutton). The Relay Healthy Alarm is de-energized when
tripping is disarmed.
9.3 Programmable Logic Elements
The FP-6000 provides programmable logic for programming
custom functions. The Programmable Logic functions include
12 blocking gates for the overcurrent protective functions, six
logic gates, six timer gates, two latches, and seven output gates.
The basic logic element for the blocking gates, logic gates, and
output gates is a 4-input logic gate that can be configured as
Disabled, or as an AND, OR, NAND, or NOR function. Each logic
gate accepts up to four inputs, which can be entered directly or
negated. The following table shows the output of each function
for any combination of inputs.
Table 52. Logic Functions.
Each timer gate has a single input and a single output with
internal on-delay and off-delay timers. The setting range on the
timers is 0 to 9999 cycles with 1-cycle resolution. The latches
include a set input and a reset input. The reset input has the
highest priority. If both the set and reset inputs are active, the
latch output is inactive. A diagram of each logic gate is shown in
Figure 73 Programmable Logic Elements.
A programmable logic gate or timer gate output may be
connected to other timer or logic gates, used to trigger waveform
capture (Logic Gate 6), or tied to an output gate to control an
output relay.
Figure 73. Programmable Logic Elements.
The default settings for the input and output functions are
defined in the previous sections. The default settings for the
remaining logic functions are disabled or unused. User Defined
logic may only be entered under the Set Mode if the “Prog
Logic” setting in the System Configuration menu is changed
from Default to Custom.
If a diagnostic failure is detected, the protective functions and
logic functions are disabled and the Relay Healthy Alarm relay is
de-energized. The other relays will not change state.
9.4 Trip and Alarm Blocking
The FP-6000 has blocking logic functions to block operation of
the overcurrent protective functions. A Blocking logic gate is
provided for each of the nine instantaneous overcurrent and
three inverse-time overcurrent protective functions. They are:
50X-1, 50X-2, 50X-3, 50R-1, 50R-2, 50R-3, 50P-1, 50P-2, 50P-3, 51P,
51R, and 51X. Each logic gate can be configured as Disabled or
as an AND, OR, NAND, or NOR function. Each logic gate accepts
up to four inputs, which can be entered directly or negated.
Figure 74. Blocking Logic Gate.
INPUTS
OUTPUTS
IN1
IN2
IN3
IN4
OR
AND
NOR
NAND
0
0
0
0
0
0
1
1
0
0
0
1
1
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
1
0
0
1
0
1
0
0
1
0
0
1
0
1
0
1
1
0
0
1
0
1
1
0
1
0
0
1
0
1
1
1
1
0
0
1
1
0
0
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
0
1
1
0
1
1
1
0
0
1
1
1
0
0
1
0
0
1
1
1
0
1
1
0
0
1
1
1
1
0
1
0
0
1
1
1
1
1
1
1
0
0