Watlow series l rev g - 02-12-08.pdf - Manual (Page 11)

Wa t l o w S e r i e s N 7
■
1 1
■
C h a p t e r 2 : I n s t a l l a n d W i r e
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.
2-wire or 3-wire RTD
• 100
Ω
: –46 to 316°C (–50 to 600°F)
• DIN curve: 0.00385 ohms/ohms/°C
• <700 µA excitation
3-wire 2-wire
3-wire 2-wire
3-wire 2-wire
3-wire 2-wire
1
2
3
456
S1
S2
6
5
4
1
2
3
456
S1
S3
S2
6
5
4
Figure 11d — Input 4
Input 3 1
2
3
4
5
6
Input 4
1
2
3
456
S1
S2
3
2
1 1
2
3
456
S1
S3
S2
3
2
1 Figure 11c — Input 3
1
2
3
456
S1
S2 5
6
4
1
2
3
456
S3
S1
S2
4
5
6 Figure 11b — Input 2
Input 2 1
2
3
4
5
6 6
5
4
3
2
1
Input 1
1
2
3
456
S1
S2
3
2
1
1
2
3
456
S1
S3
S2
3
2
1
Figure 11a — Input 1