InteliLite4 AMF20 Global Guide
125
Protection blocking
It is possible to configure one Protection Blocking to any User Protections (page 123). This function is used
to block certain protections when their function is unwanted or meaningless. Each user protection has an
option to set the blocking condition.
Block Type Description
All the time The protection is not blocked. It can be blocked only by LBI SD OVERRIDE (PAGE 460).
Run Only
Block Delay
The protection is blocked depending on engine state and time defined by setpoint Run
Only Block Delay (page 239). It can also be blocked by LBI SD OVERRIDE (PAGE 460).
Force Block
The protection is blocked by LBI PROTECTION FORCE DISABLE (PAGE 455) or by LBI SD
OVERRIDE (PAGE 460).
Electrical
Protection
The protection is blocked depending on engine state. It is unblocked once Maximal
Stabilization Time (page 238) is elapsed or GCB is closed. It can also be blocked by LBI
SD OVERRIDE (PAGE 460).
Protection blocking
Note: LBI SD OVERRIDE (PAGE 460) (Shutdown Override) does not block evaluation of user protection
conditions and their visualization. They are recorded into alarm list or history. It only blocks their actions.
Shutdown Override blocks all level 2 (Sd,BOC) protection. It does not block level 1 (Wrn, AHI, Hist) or
protection of type SD OVERRIDE (PAGE 460).
Image 5.24 Run only block delay and electrical protection blocking
History record
Always – History is recorded all the time.
Once – History is recorded only once after fault reset.
Note: Every User protection is evaluated with period 0.1s.
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