ANATEL A643, Operator'S Manual, Page: 143 / 222

Anatel A643a - Digital Inputs & Outputs 143 of 220
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Anatel
Operator Manual
10.3.1 Hardware Setup
Both digital outputs are 8.5 mA current sinks which share a common negative terminal. They
are designed to drive solid state relay inputs and have a compliance range from 5 to 30 VDC.
The hardware connections are established as described in
“General Information” on page 139 ,
the OUTPUTS terminals carrying the following designations and functions:
OUT1* Reports the instrument’s TOC level as above (low state) or below (high state) the
user-specified Alarm Limit.
OUT2* Reports the state of the instrument's sample valve as open (high state) or closed
(low state). Alternatively, if temperature uncompensated conductivity alarm is
enabled, the output is based on the USP uncompensated conductivity alarm table
(see
“Uncompensated Conductivity Alarms” on page 106 ).
Fig 10-6 : Typical Digital Output Wiring
TxD1
RxD1
RTS1
CTS1
SG
PG
TxD2
RxD2
SG
PG
TxD3
RxD3
SG
PG
Isolated
D
ATA
AC
Q
UISITION
PRINTER
DIA
GNOSTICS
BIAS
Non-Isolated
OUTPUTS
INPUTS
4-20mA
NET+
NET
COM
NET
A
UX
NET+
NET
COM
OUT1*
OUT2*
COM
COM+
IN1*
IN2*
+12V
COM
OUT+
OUT
Strain Relief
Plate
TxD1 RxD1
R
TS1
CTS
1
SG
TxD2 RxD2
SG PG
TxD3 RxD3
SG PG
Isolated
DA T A AC QUISITION PRINTER DIAGNOSTICS BIAS
Non-
Isolated
OUTPUTS INPUTS 4-20mA
NET+ NET
NET AUX
NET+ NET OUT1* OUT2* COM COM + IN1* IN2*
+12V
COM
OUT+ OUT
CONNECT
OR BLOCK for
Access
Strain Relief
Plate
+
Relay
Inputs
Relay
Outputs
Solid
State
Relay