1 power and communications, Cmc industrial electronics ltd – CMC electronic MAI085MB User Manual
Page 10
mAI085-MB Actuator Interface Technical Manual /6
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CMC INDUSTRIAL ELECTRONICS LTD
ID
Label
Description
9
Input Common
Common connection for inputs. Inputs accept 8-32VDC of either polarity,
maximum load is 20mA.
10 Modbus Port
Modbus network port - see Appendix for connections details, wired DCE
11 Input Power
Terminal
V+
G
V-
22 -26 VDC @ 2.0A
Earth Ground
VDC Common
12 Output Power and
Network
Connections
V+
D_H
SH
D_L
V-
24 VDC fused at 1.75A
Data + (non inverted)
Shield
Data - (inverted)
VDC Common
13 Controller Network
Expansion
Download /
Upload Port
RS232 connection for repeaters or fiber-optic cable drivers for the
controller network. Operates in parallel with the RS-485 port.
Port for exporting parameters to a comma delimited file - see Appendix B
for port wiring details, wired DTE
Table 2 - Description of Terminals and Connections
3.1 Power and Communications
A 2 or 3 pair shielded power and communication cable is utilized. Low capacitance twisted pair
cable is recommended. The cable should be sized to ensure voltage drop on the power
conductor does not exceed actuator controller input voltage specifications. The mAI085-MB
can accommodate up to a maximum of 31 actuator controllers. See drawing 10284 in the
Appendix for complete cabling details.
X
6
5
4
3
2
1
J2
W
H
T
/O
R
G
O
R
G
/W
H
T
W
H
T
/B
R
N
B
R
N
/W
H
T
W
H
T
/G
R
N
G
R
N
/W
H
T
W
H
T
/B
L
U
B
L
U
/W
H
T
S
H
IE
L
D
X
6
5
4
3
2
1
J2
120 Ohm 1/
4W
Terminating
Resistor
5
D
C
C
o
m
m
o
n
D
a
ta
-
S
h
ie
ld
D
a
ta
+
2
4
V
D
C
O
u
tp
u
t
To force close
dry contact if used
mAI085-MB
Actuator Interface
mAC185-MB
Actuator Controller
mGP145-MB
Gate Positioner
mGP145-MB
Gate Positioner
4
3
2
1
SHIELD
BLACK
WHITE
BLACK
RED
BLACK
GREEN
GREEN
WHITE
BLACK
RED
SHIELD
2 Pair
Cables
3 Pair
Cables
Data Cable
Pairs
20ga
22ga
2
9402
8723
3
9973
8777
Belden or equiv.
24
D
C
C
o
m
m
o
n
D
a
ta
-
S
h
ie
ld
D
a
ta
+
D+
S
D-
C
2
4
V
D
C
W
H
T
/O
R
G
W
H
T
/B
R
N
B
R
N
/W
H
T
W
H
T
/G
R
N
W
H
T
/B
L
U
B
L
U
/W
H
T
S
H
IE
L
D
O
R
G
/W
H
T
G
R
N
/W
H
T
P1
C
C
o
m
m
o
n
In
p
u
t P
1
Figure 3 - Recommended Network and Power Connections