APT3500 Smart Pressure Transmitter
Operation Manual M3500-EO1G
16 DUON System Co., Ltd.
3-4. Fail Mode Alarm
AUTROL® Smart Pressure Transmitter automatically and continuously performs self-diagnostic
routines. If the self-diagnostic routines detect a failure, the transmitter drives its output outside of the
normal saturation values. The transmitter will drive its output low(down) or high(up) based on the
position of the failure mode alarm jumper . See Table 3.1 for Output values.
[Table 3-1 Standard Alarm and Saturation Value]
Fail Mode Select Jumper Switch has in LCD Module and Main CPU Module and Jumper Switch Line is
connected circuital. In case of Not LCD Module, we can use CPU Module's Fail Mode Select Jumper
Switch and In case of LCD Module we can use LCD Module's Jumper Switch. In this case, CPU Module
is selected "Down" side. No selected we can select "Down" side.
(Jumper Select Switch is followed in Figure 3-2, 3-3)
Select Fail Mode
Both LCD Module and CPU Module
Only CPU
Module
CPU Module
LCD Module
CPU Module
Fail Down
Down
D D
Fail Up
Down
U
U
Up U
or
D
< Fail Mode Selection DIP Switch of CPU Module >
Level
4~20mA Saturation
4~20mA Alarm
Low/Down 3.9
mA
≤
3.78 mA
High/Up 20.8
mA
≥
21.1 mA
1
2
ON
Up
Down
1. WR_EN (EEPROM Write Enable)
DOWN : Enable
UP : Protected
2. Fail Mode Alarm
DOWN : Low
UP : High