Basler BE1-CDS220, Instruction Manual

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8-18 Application BE1-CDS220
Control of the active setting group can be manual or automatic. For the TX-W-CTL application, setting
group control is enabled for discrete input and automatic or manual control as determined by the position
of virtual switch 343.
Alarms
Three logic variables drive the front panel LEDs: Relay Trouble (ALMREL), Major Alarm (ALMMAJ), and
Minor Alarm (ALMMIN). A fourth logic variable, Logic Alarm (ALMLGC), has no associated front panel
LED. When the relay self-test detects a problem in the relay (ALMREL) as programmed for the TX-W-CTL
scheme, the Relay Trouble LED lights, output A operates, and all outputs are disabled. When a Major
Alarm is detected (ALMMAJ), the associated LED lights, and output 6 operates. When a Minor Alarm
(ALMMIN) is detected, the associated LED lights, but in this scheme, no output relay is programmed to
operate.
Table 8-12. TX-W-CTL Contact Input Logic
State Labels
Input Purpose Name Label
Closed Open
IN1
Optional input. Used for CT input circuit 1 breaker status
indication in SER reports. TRUE when breaker closed.
BREAKER-1 CLOSED OPEN
IN2
Optional input. Used for CT input circuit 2 breaker status
indication in SER reports. TRUE when breaker closed.
BREAKER-2 CLOSED OPEN
IN3
Optional input. Used for 86 status indication and locks out the
low-side and high-side breakers when TRUE. TRUE when 86
tripped.
86-TRIPPED TRIPPED NORMAL
IN7, IN8
Optional inputs. Used for programmable alarms and SER
reporting. For example, sudden pressure trip or transformer
hot spot alarm, etc. Drives VO14-VO15 which are
programmable alarm points 22-23. Label inputs as
appropriate.
INPUT_7,
INPUT_8
CLOSED OPEN
Table 8-13. TX-W-CTL Function Block Logic
Function Purpose
BESTlogic
Expression
Mode Setting
87
Used for percent-restrained differential protection with high-speed
unrestrained instantaneous differential protection.
243 1 (Enabled)
51N
Used for timed ground-overcurrent protection for independent ground
input circuit.
0
G (Ground
Input)
151P Used for timed phase-overcurrent protection for CT input circuit 1. 0 1 (CT Input 1)
151N Used for timed neutral-overcurrent protection for CT input circuit 1. 0 1 (CT Input 1)
NOTE
Tables 8-12 through 8-15 provide detailed logic definitions for the inputs, outputs,
protection, and control elements. Only those inputs, logic blocks, virtual switches,
and outputs in use for the TX-W-CTL preprogrammed logic are described in the
following Tables.