GE Mark VIeS - TBCIH4 C Contact Input Circuits

In the following figure, the TBCIH4C contact input section has a current limit resistor on each wetting voltage output.
Noise
Suppression
From Power
Source for
Contact
Excitation
(Wetting)
(+)
(-)
Floating DC
JE1
JE2
(+)
(-)
(+)
(-)
Field
Contact
ID
Current Limit
Resistor
Hardware Filter
JR1
Noise
Suppression
(+)
(-)
Field
Contact
Current Limit
Resistor
Hardware Filter
Noise
Suppression
(+)
(-)
Field
Contact
Current Limit
Resistor
Hardware Filter
Noise
Suppression
(+)
(-)
Field
Contact
Current Limit
Resistor
Hardware Filter
Noise
Suppression
(+)
(-)
Field
Contact
Current Limit
Resistor
Hardware Filter
JS1
JT1
ID
ID
JT1
24 Contact Inputs per terminal Board
Each Contact input ends on one point
and is fanned to
.
.
.
.
.
.
.
TB1
1
2
3
4
5
6
7
8
47
48
BCOM
BCOM
BCOM
BCOM
BCOM
<R> YDIA
<S> YDIA
<T> YDIA
TBCIH4C Contact Input Circuits
YDIA Discrete Input Modules GEH-6855_Vol_II System Guide 125
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