Input 1; Thermocouple; Rtd (2- Or 3-Wire) 100Ω Platinum; Input 2 Wiring - Watlow 97 series User Manual

NOTE:
Successful installation
requires five steps:
• Choose the controller's
hardware configuration
and model number
(Appendix);
• Choose a sensor
(Chapters 3 and 6, and
Appendix);
• Install the controller
(Chapter 2);
• Wire the controller
(Chapter 3) and
• Configure the controller
(Chapters 4, 5 and 6).
ç
WARNING:
To avoid damage to
property and equipment,
and/or injury of loss of
life, use National Electric
Code (NEC) standard
wiring practices to
install and operate the
Series 97. Failure to do
so could result in such
damage, and/or injury or
death.
ç
CAUTION:
Maintain isolation
between input 1 and
input 2 to prevent a
ground loop. A ground
loop may cause incorrect
readings, dashes across
the upper display or the
display of error codes.
Failure to follow this
guideline could result in
damage to equipment
and product.
3 . 6 W ir i n g
Input 1 Wiring

– Thermocouple

Figure 3.6a
Available on all units
Impedance: 20MΩ
– RTD (2- or 3-Wire) 100Ω Platinum
Figure 3.6b
Available on all units
2-wire
jumper 5 to 6
5
S3
6
S1
7

Input 2 Wiring

Digital Event

Figure 3.6c –
97 _ 1 - _ _ _ _ - _ _ _ _
Voltage input
3-36VÎ (dc) Event Input High State
0-2VÎ (dc) Event Input Low State
Contact closure
0-2kΩ Event Input Low State
> 23kΩ Event Input High State
1
2
3
4
5
6
- 6
7
+7
1
2
3-wire
3
4
S2
5
5
6
S3
6
7
S1
7
+
EVENT
-
EVENT
1
1
3
2
3
4
5
6
7
13 14 15
8
9
10
11
16 17 18
12
19 20 21
1
1
2
3
4
5
6
7
+5V
2.67kΩ
3
20kΩ
100Ω
1
13 14 15
8
9
10
11
16 17 18
12
19 20 21
Wa tl o w Se r i e s 9 7