Trumen LSVR Series - Operation Matrix - LSVR-AR (EIAR)

Vibrating rod is a single element tuned mechanical element type level sensing device.
Failsafe defines that the alarm and power failure / device failure conditions are same to
the external system. Failsafe operation is best understood with the type of installation
and following matrix.
Off
Off
On
On
Failsafe
Setting
Material &
Installation
Status
LED
Power ON
1 2 3 4
ON
min failsafe
1 2 3 4
ON
min failsafe
Material
Status
No material
at high level.
PNP Output
Power OFF
Switch no. 4
is off, failsafe
high/maximum.
Indicating
normal or
healthy
status.
Normal or healthy
output.
Alarm output.
(due to power
failure)
No material
at low level.
Switch no. 4
is on, failsafe
low/minimum.
Indicating
alarm
status.
1 2 3 4
ON
min failsafe
Indicating
alarm
status.
Material is
above the low
level or rod is
covered with
material.
1 2 3 4
ON
min failsafe
Material is
above the high
level or rod is
covered with
material.
Indicating
normal or
healthy
status.
High level / overflow detectionLow level / underflow detection
1 2 3 4
I
L
I
L(max)
= 250mA
I
leak
≤ 0.1mA
1 2 3 4
I
leak
I
leak
≤ 0.1mA
1 2 3 4
I
leak
I
leak
≤ 0.1mA
1 2 3 4
I
leak
I
leak
≤ 0.1mA
1 2 3 4
I
leak
I
leak
≤ 0.1mA
1 2 3 4
I
leak
1 2 3 4
I
L
I
L(max)
= 250mA
I
leak
≤ 0.1mA
1 2 3 4
I
leak
Alarm output.
(as it is)
Alarm output.
Alarm output.
(as it is)
Alarm output.
Normal or healthy
output.
lsvr-manual-annexure-2 www.trumen.in
Annexure-2
Operation Matrix - LSVR-DP (EIDP / ERDP)
Page 2
Alarm output.
(due to power
failure)
Switch no. 4
is off, failsafe
high/maximum.
Switch no. 4
is on, failsafe
low/minimum.