To reset the Relay Function to use Standard Alarms, enter the desired Relay Set Up ( P100 ).
values: 0 = off ( relay always de-energized )
1 = level alarm ( preset )
2 = in bounds alarm ( relays de-energized on alarm )
3 = out of bounds alarm ( relays de-energized on alarm )
4 = rate of change alarm ( relays de-energized on alarm )
5 = temperature alarm ( relays de-energized on alarm )
6 = LOE alarm ( relays de-energized on alarm, Relay A / B Setpoints are not applicable )
7 = tranducer cable fault alarm
Independent Relay Setpoints
Relay A and B Setpoint values set the critical points (based on the Relay Function) where, in the RUN
mode...
1. Alarm Indicators (if programmed) are switched "ON" and OFF"
2. Relays are "energized" and "de-energized"
For most Relay Functions, setpoint values represent material levels, entered in Units (P005) or percent of
Span (P007) as referenced to Empty (P-006). Temperature alarm values are entered in degrees Celsius (°C).
Rate alarms are entered in Units/minute or percent of Span per minute. A positive value is entered for a filling
rate alarm; negative for emptying.
Important! Relay A/B Setpoint values cannot be exactly equal.
RELAY SETPOINTS
*
RELAY
FUNCTION A B ACTION WHEN
Level H or HH 85 % 70 % de-energizes level rises to 85%
energizes level falls to 70%
Level L or LL 15 % 30 % de-energizes level falls to 15%
energizes level rises to 30%
In Bounds
▲
80% 50% de-energizes level falls to 78%
energizes level rises to 82%
de-energizes level rises to 52%
energizes level falls to 48%
Out of Bounds
▲
80% 50% energizes level falls to 78%
de-energizes level rises to 82%
energizes level rises to 52%
de-energizes level falls to 48%
Rate of Change +10% +5% de-energizes fill rate increases to 10%/min
energizes fill rate decreases to 5%/min
-10% -5% de-energizes empty rate increases to 10%/min
energizes empty rate decreases to 5%/min
Temperature 60 55 de-energizes temperature rises to 60 °C
energizes temperature falls to 55 °C
-30 -25 de-energizes temperature falls to -30 °C
energizes temperature rises to -25 °C
*
Values shown are for illustration purposes only. Enter values which apply to your particular installation.
▲
2% factory set hysterisis, adjustable via P116.
PL-532 42
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