Watlow Series 96 - Manual (Page 8)

3 . 2 ■ W i r i n g Wa t l o w S e r i e s 9 6
NOTE:
Successful installation
requires five steps:
• Choose the controller’s
hardware configuration
and model number
(Appendix);
• Choose a sensor
(Chapters Three and
Six, and Appendix);
• Install the controller
(Chapter Two);
• Wire the controller
(Chapter Three) and
• Configure the controller
(Chapters Four, Five
and Six).
∫ç
WARNING:
To avoid potential
electric shock and
damage to property and
equipment, use National
Electric Code (NEC)
safety practices when
wiring and connecting
this unit to a power
source and to electrical
sensors or peripheral
devices. Failure to do so
could result in 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.
Input 1 Wiring
Figure 3.2a – Thermocouple
Available on all units
Impedance: 20M
Ω
Figure 3.2b – RTD (2- or 3-Wire) 100
Ω
Platinum
Available on all units
Figure 3.2c – **
0-5VÎ, 1-5VÎ or 0-10VÎ (dc) Process
Available on all units
Input impedance: 20k
Ω
Figure 3.2d – **
0-20mA or 4-20mA Process
Available on all units
Input impedance: 100
Ω
ç
**CAUTION:
Process input does not have
sensor break protection.
Outputs can remain full on.
10
8 1
2
3
4
5
6
7
13 14 15
11
12
16 17 18
19 20 21
9
5
6
+
-
10
8 1
2
3
4
5
6
7
13 14 15
11
12
16 17 18
19 20 21
9
4
6
+
-
1
2
3
4
5
6
7
1
5
6
7
S1
S2
S3
3-wire
1
2
3
4
5
6
7
6
7
S1
S3
5
2-wire
jumper 5 to 6
10
8 1
2
3
4
5
6
7
13 14 15
11
12
16 17 18
19 20 21
9
- 6
+7