Owner manual

Chapter 2: Install and Wire ■ 12 ■ Watlow Series N7
Ó
Warning: Use National Electric (NEC) or other country-spe-
cific standard wiring and safety practices when wiring and
connecting this controller to a power source and to electri-
cal sensors or peripheral devices. Failure to do so may
result in damage to equipment and property, and/or injury
or loss of life.
Note:
To prevent ground loops, maintain isolation from input to
output when using switched dc or analog process outputs.
Use ungrounded thermocouples.
Process Inputs
• Voltage: 0 to 10VÎ (dc)
• Current: 0 to 20 mA
• Voltage input impedance: 50 kΩ
• Current input impedance: 100 Ω
1
2
3456
Common
–
4
5
Current
+
6
Voltage
+
Figure 12d — Input 4
Input 3
1
2
3
4
5
6
Input 4
1
2
3 456
Common
–
1
2
Current
+
3
Voltage
+
Figure 12c — Input 3
1
2
3 456
Common
–
6
5
Current
+
4
Voltage
+
Figure 12b — Input 2
Input 2
1
2
3
4
5
6
6
5
4
3
2
1
Input 1
1
2
3 456
Voltage
+
3
2
Current
1
–
Common
+
Figure 12a — Input 1