Strain Guage Indicator: 409-W
REF NO: m59A/om/501
Issue NO: 03
Page 17 of 34
Relay 2-ON till PV>SP2+HYS2 after that Relay 2- OFF.
Fig 7.3.
Depending upon condition set i.e. Latch Yes/No, Acknowledge Yes/No or Trip refer
tables 7.4, 7.5, 7.6, 7.7.
7.7
Open sensor UP scale/DOWN scale
This is used to define the state of the alarms in OPEN sensor condition. It can be
configured as UP Scale or DOWN Scale by keys. This condition works if and only if
OPEN sensor condition occurs. Suppose ,UP scale has been selecte
d and “HH”
logic is there then during OPEN sensor condition Relay 1 & 2 will be ON and Lamp
will be FLASH as shown in tables 7.4, 7.5, 7.6, 7.7. If DOWN logic is selected then
relays and Lamp will be OFF.
7.8
HH Logic
HH-high, very high. AL1-high, AL2-very high.
In this logic if “UP Scale” condition has been selected than in OPEN sensor
condition ALARM 1 and ALARM 2 will be in the ABNORMAL condition and will
work according to the following tables 7.4, 7.5, 7.6, 7.7.
If “DOWN Scale” Condition
has been selected for this logic than in OPEN sensor condition ALARM 1 and
ALARM 2 will be in the NORMAL State of operation.
7.9
HL Logic
HL-high, low AL1-low, AL2-high.
In this logic if “UP Scale” condition has been selected than in OPEN sensor
condition ALARM 2 will be in the ABNORMAL condition and ALARM 1 will be in the
NORMAL condition will work according to the following tables 7.4, 7.5, 7.6, 7.7.If
“DOWN Scale” Condition has been selected for this logic than in OPEN sensor
condition ALARM 1 will be in the ABNORMAL condition and ALARM 2 will be in the
NORMAL condition and will work according to the following tables.
