User manual

PAT700 Total Organic Carbon Analyzer – Installation Page 21
Anatel Operator Manual
I/O wiring
The analyzer has three 4-20 mA outputs, two discrete inputs, and four discrete outputs.
Connect wiring to the connector blocks located on the I/O circuit board.
• The connector blocks are a 2-part assembly.
• The terminal block connector can be unplugged from the analyzer for easier
installation of wiring.
• Install twisted-pair unshielded wiring, 18 to 14 AWG (1.0 to 2.5 mm
2
).
4-20 mA outputs
The analyzer has three 4-20 mA outputs. Wiring connects to terminals on connector block
J17, as listed in Table 2-3.
• Analog output 1 represents TOC (total organic carbon).
• Analog output 2 represents conductivity or resistivity (user selected).
• Analog output 3 represents temperature in °F or °C (user selected).
Table 2-3
J17 connector block: 4-20 mA output wiring terminal designations
J17 Block Terminal Description Variable Designation
1 4-20 mA source output for analog output 1 (+) TOC AO1+
2 4-20 mA sink output for analog output 1 (–) TOC AO1-
3 4-20 mA source output for analog output 2 (+) Conductivity or resistivity AO2+
4 4-20 mA sink output for analog output 2 (–) Conductivity or resistivity AO2-
5 4-20 mA source output for analog output 3 (+) Temperature AO3+
6 4-20 mA sink output for analog output 3 (–) Temperature AO3-