Hach ANATEL PAT700 - 2.6.1 Power supply wiring; 2.6.2 I;O wiring

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Installation
Discrete outputs
The analyzer has four discrete outputs. Wiring connects to terminals on connector block
J22, as listed in Table 5.
• Discrete output 1 is a TOC alarm. The output reports the TOC level as above (low
state) or below (high state) the user-specified alarm limit.
• Discrete output 2 is an uncompensated conductivity alarm. A low state indicates the
conductivity level is above the alarm limit. A high state indicates the conductivity level
is below the alarm limit.
• Discrete output 3 reports a warning or failure condition. A low state indicates an error
condition exists. A high state indicates no error conditions exist.
• Discrete output 4 reports a TOC analysis start (by indicating the state of the sample
inlet valve). A low state indicates the sample valve is closed. A high state indicates the
sample valve is open.
Table 5
J22 connector block: Discrete input wiring terminal designations
J22 Block Terminal Description Variable Designation
1 Digital output 1 (+) TOC alarm DO1+
2 Digital output 2 (+)
Uncompensated conductivity
alarm
DO2+
3 Common return for discrete outputs 1 and 2 (–)
TOC alarm, uncompensated
conductivity alarm
DO1/2–
4 Digital output 3 (+) Warning or failure DO3+
5 Digital output 4 (+) TOC analysis start DO4+
6 Common return for discrete outputs 3 and 4 (–)
Warning or failure,
TOC analysis start
DO3/4–
7
• 12 VDC power supply +
• Connect only if input device requires power
supply
Input power supply +12V
8
• 12 VDC power supply –
• Connect only if input device requires power
supply
Input power supply GND