Alarm Memory - LAD

Modified on Wed, 03 Jan 2024 at 12:10 PM

Viewing the alarm memory

The Alarm Memory function allows you to access all events that occurred in the LAD, such as activation of forced cooling, alarms, and shutdowns. This memory is non-volatile and cumulative, meaning it retains information about all events that have occurred, though not the specific times at which they occurred. In the case of two different events, the result displayed in the position relative to this event is a sum of them.

The Alarm Memory is accessed by sequentially pressing the keys and .

To reset the Alarm Memory, press the key for 10 seconds. If there is any active alarm, the memory will be reset, indicating its occurrence. Press the key to return to the display screen.

The alarms are indicated in hexadecimal format. In the case of two different events, the result displayed in the position relative to this event is a sum of them. Below is the table with possible error combinations for each digit.

Code	Description
0	None diagnostics assets
1	Diagnostics 1 asset
2	Diagnostics 2 asset
3	Diagnostics 1 + 2 assets
4	Diagnostics 4 asset
5	Diagnostics 1 + 4 assets
6	Diagnostics 2 + 4 assets
7	Diagnostics 1 + 2 + 4 assets
8	Diagnostics 8 asset
9	Diagnostics 1 + 8 assets
A	Diagnostics 2 + 8 assets
B	Diagnostics 1 + 2 + 8 assets
C	Diagnostics 4 + 8 assets
D	Diagnostics 1 + 4 + 8 assets
E	Diagnostics 2 + 4 + 8 assets
F	Diagnostics 1 + 2 + 4 + 8 assets

Consult the table below for an understanding of each alarm code on the display:"

Code	Description
0000	No alarm
0001	Temperature alarm on RTD1
0002	Shutdown alarm on RTD1
0004	Temperature alarm on RTD2
0008	Shutdown alarm on RTD2
0010	Temperature alarm on RTD3
0020	Shutdown alarm on RTD3
0040	Temperature alarm on RTD4
0080	Shutdown alarm on RTD4
0100	Temperature alarm on RTD5
0200	Shutdown alarm on RTD5
0400	Temperature alarm on RTD6
0800	Shutdown alarm on RTD6
1000	Group 1 Forced Cooling On
2000	Group 2 Forced Cooling On
4000	Fan Exercise
8000	--