Alarm Settings - Honeywell 854 ATG Series Instruction Manual

Example:
On tank 102 is the nozzle height 21.350 m and the nozzle length is 300 mm. The displacer may not enter
the nozzle. The maximum operating level is 19.1 metres. Because of sludge, the motor limit switch low
must be set on 300 mm. A standard 90 mm carbon Teflon displacer is used and the drum circumference
is 338.025 mm. The gauge is connected to CIU highway TL1 and the address is chosen as 02. The level
dimension is metres.
Item (+setting)
W2=ENRAF2 <enter>
TT=+021.3500 <enter>
MH=+021.0500 <enter>
MZ=+020.0000 <enter>
ML=+000.3000 <enter>
DC <enter>
DW <enter>
DA <enter>
S1 <enter>
TA=02 <enter>
TI=TK-102 <enter>
TS <enter>
GT <enter>
EX <enter>

3.3.5 Alarm settings

Refer to figure 3.7. The high level alarm (HA) and low level alarm (LA) conditions are transmitted to the host
via the 2-wire Honeywell Enraf field bus (or optional RS-channel).
Item Name
W2= Protection level 2
AH= Level alarm hysteresis
HA= High level alarm
HH= High high level alarm
LA= Low level alarm
LL= Low low level alarm
EX Exit
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Description
Enter protection level 2 (ENRAF2 is the default level 2 password).
Tank top is 21.35 metres.
Motor limit switch high set at 21.35 - 0.3 = 21.05 metres.
Lock test limit switch level is set between maximum operating level
and MH.
Motor limit switch low set at 0.3 metres.
Check whether the drum circumference is correct; if not, change it.
Check whether the displacer weight is correct; if not, change it.
Check whether the displacer area is set correct; if not, change it.
Check whether the set point 1 is set correct; if not, change it.
The transmission address becomes: 02.
Tank identifier programmed as TK-102.
Check whether the transmission speed is correct; if not, change it.
Check whether the gauge type is set correct; if not, change it.
Exit protection level.
Description
Enter protection level 2 (default level 2 password: ENRAF2).
Format according to item LD. Sets alarm hysteresis.
Format according to item LD. High level alarm set point.
Format according to item LD. High high level alarm set point.
Format according to item LD. Low level alarm set point.
Format according to item LD. Low low level alarm set point.
Exit protection level.
Commissioning