4.12.3.3
Control box E50
The control box E50 is installed on the engine and has switches below the LDU-20.
Fig 4-23
Control box E50
00563
001
002
003
Legend
001
LDU-20
003
SCR bypass switch
002
Option SPC - SPC bypass switch
4.12.3.4
Messages of the HP SCR control system
The HP SCR control system gives three messages to the alarm and monitoring system (AMS).
The messages are as follows:
•
SCR ON
This message shows that the HP SCR system is set to ON.
•
SCR minor failure
This message shows a failure that does not have an effect on HP SCR system operation.
•
SCR major failure
This message shows a failure that has an effect on HP SCR system operation. The HP SCR
control system stops the HP SCR system operation and changes to Tier II mode.
4.12.4
LDU-20 pages
For the HP SCR system the LDU-20 panel has the pages that follow.
X52
AA00-9270-00AAA-043A-A
Operation Manual
HP Selective catalytic reduction system
Winterthur Gas & Diesel Ltd.
- 104 -
Issue 002 2018-11