Instruction Manual

Watlow Series PD ■ 8 ■ Chapter 2 Install and Wire
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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.
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WARNING: Process input may
not have sensor break protec-
tion. Outputs can remain full on.
Figure 8a — 2-Wire RTD Input 2 (100 Ω DIN curve 0.00385
Ω/Ω/°C)
PDD _-_ _ _ _-_ _ _ _
Terminals 5 and 7 must be shorted for a two-wire RTD.
• Nominal excitation current: 250 µA
Figure 8b — 3-Wire RTD Input 2 (100 Ω DIN curve 0.00385
Ω/Ω/°C)
PDD _-_ _ _ _-_ _ _ _
The S1 lead (usually white) must be connected to terminal 6.
• Nominal excitation current: 250 µA
Figure 8c — Input 1, 0 to 10V
ÎÎ
(dc) Process Input
(all model numbers)
• Input impedance 20 kΩ, dc only
Figure 8d — Input 2, 0 to 10V
ÎÎ
(dc) Process Input
PDD _-_ _ _ _-_ _ _
• Input impedance 20 kΩ, dc only
• Input 2 isolated from Input 1
5 6 7 8
8
5
+
-
9 10 11 12
12
9
+
-
5 6 7 8
6 S1
7 S2
5 S3
8 INFOSENSE™ DATA
INFOSENSE™ GND
5 6 7 8
6 S1
7 S2
5 S3
5 6 7 8
6 S1
7 S2
5