ALPHA
®
Solar
™
Sign
22
Installation: Electrical connection
Signal wiring
5.
To connect the sign so messages can be sent to it by a computer,
run RS485 signal wire (pn 1088-8000) through the signal conduit:
1 2 3 4 5 6 7 8 9 10
1
0
1 2 3 4 5 6 7 8 9 10
Figure 6: Alpha® Solar
™
(bottom view) — RS485 and temperature probe connections
RE
D (
-)
BL
ACK (
+
)
SH
IE
L
D
S
HI
E
L
D
BL
A
CK
(+
)
Converter Box III (pn 1088-1111)
The converter box must be installed indoors.
RS485
cable
Run
all
signal cables
(OUTPUT RELAY, ISO
OUT, RS232, RS485,
and EXTERNAL TEMP
PROBES) through the
opening in this side.
RS485
RS232
EXTERNAL
TEMP.
PROBES
OUTPUT
RELAY
ISO
RE
D w
ire
BL
A
CK
wi
re
G
reen
w
ir
e
Temperature probe (optional)
• Run the temperature probe cable
through the signal conduit.
• Mount in an area which best represents
the open air temperature.
• The ends of the temperature probe
should be mounted out of doors in a
shaded location and NOT in direct
sunlight.
• When mounted, the
ends
of the
temperature probe should be suspended
in the air and not touch anything.
Set switch to
Unterminated
.
Содержание Alpha
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