Status LED Indications
1. Blinking once per two seconds : No Error
status
1 2 3 4 5 6 7 8 9
decrease/damping
20mA/5V/10V
increase
U
12 to 60 VDC
!
status
(100%)
4mA/1V/2V
(0%)
to set
turn-on
TLC2
4..20mA o/p
1500pF
4200pF
Range
1..5V 2..10V*
*Min Supply U > 21.5V
Vo
1 2
3 4
5
2. Blinking rapidly rapidly : Indicating too high capacitance at probe (Error)
Cause: Due to probe is too long for TLC2 in conductive liquid or water.
C(residual)
High Capacitance
at probe
C(material)
status
1 2 3 4 5 6 7 8 9
decrease/damping
20mA/5V/10V
increase/Water
U
12 to 60 VDC
!
status
(100%)
4mA/1V/2V
(0%)
to set
turn-on
TLC2
4..20mA o/p
1500pF
4200pF
Range
1..5V 2..10V*
*Min Supply U > 21.5V
Vo
Probe is too long
Error is indicated by 21.0mA in loop.
decrease/damping
(100%)20mA/5V/10V
increase
(0%)4mA/1V/2V
1500pF
4200pF
Range
!
1 2 3 4 5
Status LED Indications
-
TLC2 (EILV / ERLV)
Annexure-1
tlc2-manual-annexure-1
www.trumen.in
Page 5
Error Indications
Blinking rapidly
rapidly
Blinking once
per two seconds
Error indicated by 21mA
in loop output
5.25 VDC in 1-5V output
10.5 VDC in 2-10V output
Solution: Change the range from 1500pF to 4200pF using switch# 5
oil / conductive liquids <2500mm probe length
for conductive liquids above 2500mm probe length
3. Blinking fast continuously: Shorting error (Probe is galvanically short between sense & ground)
Cause: Due to probe insulation failure in conductive liquid.
status
Blinking fast
continuously
5.25 VDC at 1-5V output
10.5 VDC at 2-10V output
Solution: Probe is needed to re-insulate or to be replaced