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Instruction Manual
748467-A
January 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Installation 2-11
Model MicroCEM
c. Interface Connections
Connection Designator
Shell
Size
No.
Contacts
AWG Table
AC Power J1 12 3 16 Table 2-2
Analog Interface J2 12 22 26, 24, 22 Table 2-3
Digital Interface J3 14 37 26, 24, 22 Table 2-4
RS232 J4 10 13 28, 26, 24 Table 2-5
LAN Interface J5 8 6 28, 26, 24, 22 Table 2-7
RS485 J6 8 3 24, 22, 20 Table 2-6
Phone Line (Modem) J7 8 3 24, 22, 20 Table 2-8
Antenna (Peltier Power) J8 16 3 14, 12 Table 2-9
Table 2-1. Interface Connections
SIGNAL NAME DEFINITION PIN
L1 A
L2
85-264 VAC, 47-440 Hz
C
GND AC Ground B
Table 2-2. AC Power Connection Terminal Assignments
SIGNAL NAME DEFINITION PIN
O
2
CL+ 1
O
2
CL-
O
2
Reading, 4-20 mA Output
2
COCL+ 3
COCL-
CO Reading, 4-20 mA Output
4
NO
X
+ 5
NO
X
-
NO
X
Reading, 4-20 mA Output
6
EXP1CL+ 7
EXP1CL-
External process No. 1, Current Loop input, 4-20 mA
8
EXP2CL+ 9
EXP2CL-
External process No. 2, Current Loop input, 4-20 mA
10
BAROP+ 11
BAROP-
Barometric pressure Compensator 0-10V input
12
Table 2-3. Analog Output Terminal Assignments