Owner manual

Chapter 2: Install and Wire ■ 16 ■ 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.
Event Inputs
• Voltage input
–0.5 to +0.5VÎ (dc), event input low (closed)
3 to 30VÎ (dc), event input high (open)
• Contact closure
less than 250 Ω, event input low (closed)
more than 10 kΩ, event input high (open)
Note: Terminals 5, 6, 13 or 14 can be used for the common connection.
1
2
345678
91011
12
13
14
15
16
(common) 14
16
+
–
Figure 16d — Event Input 4
(common) 6
8
–
+
1
2
345678
91011
12
13
14
15
16
Figure 16c — Event Input 3
1
2
345678
91011
12
13
14
15
16
(common) 14
15
+
–
Figure 16b — Event Input 2
1
2
345678
91011
12
13
14
15
16
(common) 6
7
–
+
Figure 16a — Event Input 1
16 pins
Outputs 1 & 2
Event Inputs 1 to 4
Event Outputs 1 to 4
1
2
3
4
5
6