D–EIMWC00808-16HU - 36/64
Figure 15, Communication Wiring
NOTE
: A fourth chiller, Chiller D would be connected to chiller C same as chiller C to chiller B.
Table 11, Address DIP Switch Settings for Controllers Using pLAN.
Chiller
(1)
Comp 1
Controller
Comp 2
Controller
Unit
Controller
Reserved
Operator
Interface (2)
Reserved
A
1
2
5
6
7
8
100000
010000
101000
011000
111000
000100
B
9
10
13
14
15
16
100100
010100
101100
011100
111100
000010
C
17
18
21
22
23
24
100010
010010
101010
011010
111010
000110
D
25
26
29
30
31
32
100110
010110
101110
011110
111110
000001
NOTES:
1.
Up to four single or dual compressors can be interconnected.
2.
The Operator Interface Touch Screen (OITS) setting is not a DIP switch setting. The OITS address is
selected by selecting the ‘service’ set screen. Then, with the Technician level password active, select the
‘pLAN Comm’ button. Buttons A(7), B(15), C(23), D(31) will appear in the middle of the screen, then
select the letter for the OITS address for the chiller that it is on. Then close the screen. Note that A is the
default setting from the factory.
3.
Six Binary Switches: Up is ‘On’, indicated by ‘1’. Down is ‘Off’, indicated by ‘0’
.
Chiller A
PIGTAIL
485
OPDR
C
A
B
UCM
J10 J11
BLU/WHT
WHT/BLU
SHIELD
(+)
(-)
UNIT CONTROL
J11 PORT
Chiller B
485
OPDR
C
BLU/WHT
WHT/BLU
SHIELD
B A
UCM
J10
PORT
Chiller C
(+) (-)
J11 Port
UNIT CONTROL
UNIT CONTROL
P
P
P
P
