Table of Contents
LMV Series
6)
On direct ignition oil trains, parameter 281/381 determines the point at which the oil is ignited during the startup sequence.
A setting of 0 means the ignition output X4-02.3 will energize at the beginning of phase 38. A setting of 1 means the ignition
output X4-02.3 will energize at the beginning of phase 22.
7)
On heavy oil trains, parameter 286 defines the point in the startup sequence when the start release for heavy oil (input X9-
04.2) must be energized. A setting of 0 means the input only needs to be energized during phase 38. A setting of 1 means
the input must be energized during phases 38-62.
8)
If gas valve proving is performed on startup (immediately after phase 30), the actuators will be in prepurge position. If gas
valve proving is performed on shutdown (immediately after phase 62), the actuators will be in the same position as they
were in phase 62. The actuators will not move during valve proving.
9)
Actuator position is checked by using one of three methods. The method used depends upon the phase of the sequence.
Position Required to Proceed means that the actuators must achieve and hold a certain position for the sequence to proceed.
Dynamic Position Checking means that the actuator is evaluated by a "time and distance from target" algorithm. The further
the actuator is away from its target position, the less time the actuator is permitted to be in that position. Run-Time Position
Checking means that the actuator is expected to be at a certain point in a certain amount of time (based off of the run-time
of the actuator).
SCC Inc.
Page 19
Technical Instructions
LV3-1000
Section 3
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