Watlow 97 series, Руководство пользователя

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Wa t l o w S e r i e s 9 7 W i r i n g
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3 . 1 1
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).
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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.
Figure 3.11a — EIA-232 to EIA-485 Conversion
B&B Converter (B&B Electronics Manufacturing Company, (815) 433-5100).
CMC Converter (CMC Connecticut Micro-Computer, Inc., 800-426-2872).
NOTE:
The CMC converter requires an external power supply when used with a laptop computer.
Figure 3.11b — Termination for EIA-232 to EIA-485 Converter
+5V
B
A
GND
T+/R+
T-/R-
Com
1K
Ω
120
Ω
1K
Ω
Converter box
termination
with pull-up
and pull-down
resistors.
9V Î (dc) (see note)
120V Å (ac)
COM.
T+/R+
T-/R-
0219-0217-0000
7 ft. comms cable
EIA-232
ADA485L
EIA-485
A
B
A
B
G
9V Î
G
DI/O
DI/O
19
21
20
T-/R-
TD (A)
TD (B)
RD (A)
RD (B)
GND
TD (A)
TD (A)
T+/R+
120V~ (ac)
EIA-232 EIA-485
EIA-485
Power Supply
AD-1210
+
–
GND
+12V
COM.
19
21
20
485OIC