ANATEL A643a User Manual

Anatel A643a - Digital Inputs & Outputs 143 of 220
RPS - June 2007 - Edition 12
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
DATA ACQUISITIONPRINTERDIAGNOSTICSBIAS
Non-Isolated
OUTPUTS
INPUTS
4-20mA
NET+
NET
COM
NET AUX
NET+
NET
COM
OUT1*
OUT2*
COM
COM+
IN1*
IN2*
+12V
COM
OUT+
OUT
Strain Relief
Plate
TxD1
RxD1
RTS1
CTS
1
SG
TxD2
RxD2
SG PG
TxD3
RxD3
SG PG
Isolated
DATAACQUISITIONPRINTERDIAGNOSTICSBIAS
Non-
Isolated
OUTPUTS
INPUTS
4-20mA
NET+ NET 
NET AUX
NET+ NET 
OUT1* OUT2* COM COM + IN1* IN2*
+12V
COM
OUT+ OUT
CONNECTOR BLOCK for Access
Strain Relief
Plate
+
Relay
Inputs

Relay
Outputs
Solid
State
Relay

ANATEL A643a Specifications

General

Brand	ANATEL
Model	A643a
Category	Measuring Instruments
Language	English