Hach ANATEL PAT700 Operator's Manual page 34

Page 24
Discrete outputs
The analyzer has four discrete outputs, as listed in
• Discrete output 1 is a TOC alarm. The output reports the TOC level as above (low
• Discrete output 2 is an uncompensated conductivity alarm. A low state indicates the
• Discrete output 3 reports a warning or failure condition. A low state indicates an error
• Discrete output 4 reports a TOC analysis start (by indicating the state of the sample
Table 2-9 Discrete outputs 1 and 2 wiring terminal designations
Wiring connector Terminal
1
2
3
4
5
Table 2-10 Discrete outputs 3 and 4 wiring terminal designations
Wiring connector Terminal
1
2
3
4
5
Operator Manual
state) or below (high state) the user-specified alarm limit.
conductivity level is above the alarm limit. A high state indicates the conductivity level
is below the alarm limit.
condition exists. A high state indicates no error conditions exist.
inlet valve). A low state indicates the sample valve is closed. A high state indicates the
sample valve is open.
Description
Digital output 1 (+)
Digital output 2 (+)
Common return for discrete outputs 1 and 2 (–)
• 12 VDC power supply +
• Connect only if input device requires power supply
• 12 VDC power supply –
• Connect only if input device requires power supply
Description
Digital output 3 (+)
Digital output 4 (+)
Common return for discrete outputs 3 and 4 (–)
• 12 VDC power supply +
• Connect only if input device requires power supply
• 12 VDC power supply –
• Connect only if input device requires power supply
Installation – PAT700 Total Organic Carbon Analyzer
Table 2-9 and Table 2-10.
Variable
TOC alarm
Uncompensated
conductivity alarm
TOC alarm,
uncompensated
conductivity alarm
Input power supply +12V
Input power supply GND
Variable
Warning or failure
TOC analysis start DO4+
Warning or failure,
TOC analysis start
Input power supply +12V
Input power supply GND
Designation
DO1+
DO2+
DO1/2–
Designation
DO3+
DO3/4–
Anatel