User`s manual

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Warning:
Use National Electric (NEC) or
other country-specific standard
wiring and safety practices when
wiring and connecting this con-
troller to a power source and to
electrical sensors or peripheral
devices. Failure to do so may re-
sult in damage to equipment and
property, and/or injury or loss of
life.
Ó
WARNING: If high voltage is ap-
plied to a low-voltage controller,
irreversible damage will occur.
Note: Insulated terminals re-
quired for quick connect style
terminals.
For quick connect terminals 1, 2,
6, 7, 8, 9, and 10, AMP P/N 3-
520406-2 or equivalent recom-
mended. Use Amp crimp tool
P/N 58078-3, insert 90391-3.
For quick connect terminals 3, 4,
and 5, AMP P/N 2-520405-2 or
equivalent recommended. Amp
crimp tool P/N 58078-3, insert
58079-3.
Note: To prevent ground loops,
isolation needs to be maintained
from input to output when using
a switched DC output. Unground-
ed thermocouples recommend-
ed.
Watlow Series C ■ 6 ■ Wiring
Figure 6a — AC Power Wiring
• Nominal voltage options:
- 24VÅ (ac)
- 120VÅ (ac)
- 230 to 240VÅ (ac)
Figure 6b — Thermocouple Input
Thermocouples are polarity sensitive. The negative lead (usually red) must be
connected to TC-.
• Input impedance: >10 MΩ
Figure 6c — RTD Input
(100 Ω Platinum DIN curve 0.00385 Ω/Ω/°C)
• Terminals S2 and S3 must be shorted for a two-wire RTD
• Nominal excitation current: 125 µA
S2
S1
RTD S1
RTD S2
S3
S3
RTD S1
RTD S2
RTD S3
2-Wire RTD3-Wire RTD*
*No lead resistance
compensation
1
2
3
4
5
6
10
9
8
7
TC+
TC
-
Thermocouple -
Thermocouple +
1
2
3
4
5
6
10
9
8
7
L1
L2
L1
L2
1
2
3
4
5
6
10
9
8
7