1
MC200-4AM Analog I/O Module User Manual
1 Port Description
1.1 Port
The extension port and user port of MC200-4AM are both protected by a
cover, as shown in Figure 1-1. Removing the covers reveals the extension
port and user port, as shown in Figure 1-2.
Extension
port cover
User
port
cover
Extension
cable
P
O
W
E
R
24
V
R
U
N
Figure 1-1 Port (covered)
Removing the covers reveals the extension port and user port, as shown in
Figure 1-2.
26
2
25
10
2
4
6
8
20
12 14 16 18
9
1
3
5
7
19
11 13 15 17
VI1 -
24V-
V1+ I1+
24 V+
PG
VI 2 -
V 3 + I 3+
VI3 -
V4+ I 4 +
VI4 -
User port
Extension
port
Extension
cable
P
O
W
ER
24
V
R
U
N
V2 + I 2 +
Figure 1-2 Port (cover removed)
The extension cable connects MC200-4AM to the system, while the
extension port connects MC200-4AM to another extension module of the
system. For details on connection, refer to
1.2 Connecting Into System
.
The user port of MC200-4AM is described in Table 1-1.
Table 1-1 User port description
Terminal Name
Description
1
24V+
Analog power supply 24V+
2
24V-
Analog power supply 24V-
3
·
NC
4
PG
GND
5
VO1+ Voltage signal output of output channel 1
6
·
NC
7
IO1+
Current signal output of output channel 1
8
VI1-
Common GND of output channel 1
9
VO2+
Voltage signal output of output channel 2
10
·
NC
11
IO2+
Current signal output of output channel 2
12
VI2-
Common GND of output channel 2
13
VI3+
Voltage signal input of input channel 1
14
FG
Screen GND
15
II3+
Current signal input of input channel 1
16
VI3-
Common GND of input channel 1
17
VI4+
Voltage signal input of input channel 2
18
FG
Screen GND
19
II4+
Current signal input of input channel 2
20
VI4-
Common GND of input channel 2
Note: an input channel cannot receive both voltage signals and current
signals at the same time. If you intend to use a channel for current signal
measurement, please short its voltage signal input terminal and current signal
input terminal.
1.2 Connecting Into System
MC200-4AM is applicable to MC200 series PLC system. It connects to the
system through its extension cable, as shown in Figure 1-3. You can connect
MC200-4AM to the system simply by inserting its extension cable into the
extension port of the basic module or any other extension module in the
system.
After connected into the system, MC200-4AM extension port can be used to
connect it to other MC200 series extension modules, such as I/O extension
module, MC200-4DA, MC200-4AD, MC200-4TC etc., including MC200-4AM
of course.
You can extend the basic module of MC200 series PLC by adding multiple
extension modules. The quantity of the extension modules that can be added
depends on the power capacity of the basic module. For details, refer to
MC200 Series PLC User Manual
.
Removing extension port
cover before connection
Basic module
Extension module
Extension cable
Figure 1-3 Connection bet. MC200-4AM and basic module
1.3 Wiring
Figure 1-4 shows the wiring of the user port. Please pay attention to the
following nine points in wiring:
1. It is recommended to use twisted screen cables as the analog input and
output cables and route them separate from power cables or other cables
that may be source of electrical interference.
2. If electric noise or voltage fluctuation is at the input/output, it is advisable to
connect a smooth capacitor (0.1µF~0.47µF/25V).
3. If there are huge amounts of electrical interference around, please connect
its FG terminal and PG terminal.
4. Each load of the PLC should be grounded separately
．
5. If a channel is used for current input, please short its voltage input terminal
and current input terminal.
6. Shorting the voltage output terminals or connecting current load to the
voltage output terminals may cause damage to MC200-4AM.
7. Properly ground the module’s PG terminal.
8. The basic module’s 24Vdc auxiliary output power or external power supply
meeting requirements can be used as the power source of the module’s
analog circuit.
9. Do not use the NC terminals of the user port.
Figure 1-4 User port wiring
