Operation; Repeatability Test; Lock Test; Freeze And Block Commands - Honeywell FlexLine SmartServo 954 Service Manual

OPERATION

8 OPERATION
8.1

Repeatability test

Entity name
[Test gauge]
8.2

Lock test

Entity name
[Lock Test]
8.3

Freeze and block commands

Part No.: 4417340 Revision 1
With the repeatability test the displacer is raised for approximately 60
mm (2.4") and then returns to the product surface. During the test, the
level dimension and level type on the display are replaced by
exclamation marks (!!! !!!) and the status field (I1) changes to
When the repeatability test is completed, the selected level dimension
and level type appears and
Entity name Description
(SmartView)
[Test gauge] Performs a repeatability test on the level measurement.
(Product level)
The level reading before and after the test may not differ more than 1
mm (1/16").
The lock test command brings the displacer to the position,
programmed in entity [lock test motor limit switch level].
During the lock test, the level dimension and level type on the display
are replaced by exclamation marks (!!! !!!) and the status field (I1)
changes to LT. When the lock test limit switch level is reached, the
status field changes into BL (block).
Entity name Description
(SmartView)
[Lock Test] The Lock test raises the displacer to the programmed
(Product level) [lock test motor limit switch level] position. Then the
gauge goes into block mode (BL). If
[Lock test motor limit switch level] is set higher than
[Motor limit switch high] the displacer stops at the
programmed [Motor limit switch high] position and stays
in lock test mode (LT).
The displacer will remain in one of these two positions until an unlock
command is given.
Both the freeze and block commands stop the displacer at the current
position.
With the freeze command, the displacer remains in its position even
when the level reaches the displacer position. Hence, the level cannot
be followed and the high, low, high high and low low level alarms cannot
be generated.
The block command stops the displacer and, depending on how the
block mode (item BM) is set, the displacer will only move up with an
increasing level, or the block is cancelled when the level reaches the
displacer position.
Service Manual
954 SmartServo FlexLine
[TG] is replaced by I1.
[TG].
247