3
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Installation Environmental Considerations
20
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Orion 2295 Phosphate Analyzer
Thermo Scientific
Section
Section
Table 2: Main terminal strip
pin assignments
Terminal
Number
Designation
Function
1
in1
Digital input 1 Live (Level sensor 1 live)
2
GnD
Digital input 1 ground (Level sensor 1 ground)
3
in2
Digital input 2 live (Level sensor 2 live)
4
GnD
Digital input 2 ground (Level sensor 2 ground)
5
in3
Digital input 3 live (Level sensor 3 live)
6
GnD
Digital input 3 ground (Level sensor 3 ground)
7
in4
Digital input 4 live (Level sensor 4 live)
8
GnD
Digital input 4 ground (Level sensor 4 ground)
9
in5
Digital input 5 live (Level sensor 5 live)
10
GnD
Digital input 5 ground (Level sensor 5 ground)
11
in6
Digital input 6 live (External 1 control)
12
rTn
Digital input 6 return (External 1 control return)
13
in7
Digital input 7 live (External 2 control)
14
rTn
Digital input 7 return (External 2 control return)
15
+24 V
24 V DC live (limited to 20 mA source)
16
GnD
24 V DC ground
17
Earth Ground
System earth ground
18
GnD
Analog output 1 ground
19
OUT1
Analog output 1 (900 Ohms Max)
20
Earth Ground
System earth ground
21
GnD
Analog output 2 ground
22
OUT2
Analog output 2 (900 Ohms max)
23
nC1
Normally closed contact relay 1
24
nO1
Normally open contact relay 1
25
C1
Common contact relay 1
26
nC2
Normally closed contact relay 2
27
nO2
Normally open contact relay 2
28
C2
Common contact relay 2
29
nC3
Normally closed contact relay 3
30
nO3
Normally open contact relay 3
31
C3
Common contact relay 3
32
nC4
Normally closed contact relay 4
33
nO4
Normally open contact relay 4
34
C4
Common contact relay 4