Megmeet MC100 Series User manual

1
MC100 Series PLC Passive I/O
Extension Module User Manual
Please allow us to congratulate you on choosing an Megmeet
programmable logic controller (PLC). Before using the
MC100 series PLC product, please carefully read this book
so as to fully understand its characteristics, use it safely and
bring its functions into full play.
Note:
To reduce the chance of accident, please carefully read the
operating instructions and safety precautions prior to use.
Only adequately trained personnel shall install or operate this
product. In operation, strict compliance with applicable safety
rules in the industry, the operating instructions and safety
precautions in this book is required.
1 Introduction
1.1 Appearance And Structure
The appearance and structure of I/O extension module are
shown in the following figure.
Extension port
DIN clip
Connecting terminal
Product labelExtension cable
Extension cable plug
Connecting terminal cover
Extension port cover
Status indicator
Figure 1-1 Appearance and structure
1.2 Model Designation
The model designation is shown in the following figure.
MC
1
0
0
-
08
08
E
N
A: AC220V power input
D: DC24V power input
N: no external power input
Output points: 16
Megmeet Controller module
Serial No.: 1: mini. 2: small. 3:
middle. 4: large.
Version No.
R: Relay mode
T: Transistor mode
Input points: 16
Sub-version, indicating the function/
structural change to the mainstream
module, following the alphabetic order
B: Basic module
E: Extension module
R
Figure 1-2 Model designation
1.3 Terminal Introduction
MC100-0808ERN, MC100-0808ETN
Pin
Function
S/S
Input mode selection: sink mode when connected
with +24V, or source mode when connected with
COM

Null, for isolation. Leave it suspended
X0 ~ X7
Digital input, work with COM to generate input
signal
Y0 ~ Y7, COM0
Digital output
MC100-0800ENN
Pin
Function
S/S
Input mode selection: sink mode when connected
with +24V, or source mode when connected with
COM

Null, for isolation. Leave it suspended
X0 ~ X7
Digital input, work with COM to generate input
signal
MC100-0008ERN, MC100-0008ETN
Pin
Function
S/S
Input mode selection: sink mode when connected
with +24V, or source mode when connected with
COM

Null, for isolation. Leave it suspended
Y0 ~ Y7, COM0
Digital output
2 Power Supply
Table 2-1 I/O extension module type and configuration
Type
Power supply
voltage Vac
Number of I/O
channels
Output
type
MC100-0800ENN
-
8/0
-
MC100-0808ERN
-
8/8
Relay
MC100-0808ETN
-
8/8
Transistor
MC100-0008ERN
-
0/8
Relay
MC100-0008ETN
-
0/8
Transistor

2
Table 2-2 I/O extension module insulation specifications
Name
Test condition
User output (relay)
to extension bus
Capable of standing one minute of 2830Vac
(50Hz) or RMS current with no breakdown or
flashover. Leakage current ≤5mA
User input to user
output (relay)
Capable of standing one minute of 2830Vac
(50Hz) or RMS current with no breakdown or
flashover. Leakage current ≤5mA
User input terminal
and extension bus
Designed by following the SELV circuit
requirements
Table 2-3 I/O extension module power requirement
Model
5Vdc/GND
24Vdc/GND
24Vdc/COM
MC100-0800ENN
85mA
0
50mA
MC100-0808ERN
70mA
50mA
50mA
MC100-0808ETN
170mA
0
50mA
MC100-0008ERN
70mA
50mA
0
MC100-0008ETN
170mA
0
0
Note:
1. 5Vdc/GND: working power for logic circuit of extension module,
provided by the extension bus
2. 24Vdc/COM: input state detection power, through S/S terminal
3. 24Vdc/GND: working power for relay circuit of extension module,
provided by the extension bus
Before connecting the extension module to the basic module,
calculate the total current of all extension module circuits.
Make sure that the currents are smaller than the capacity of
the corresponding power supply at the basic module to avoid
overloading the basic module.
3 Input Features
3.1 Internal Equivalent Input Circuit
The extension module needs external power supply (+24Vdc)
for detecting user switch status. The internal equivalent
resistance of the input circuit is about 4.3kΩ, and
bi-directional photo coupler is used for signal detection. You
can use either sink mode or source mode, so long as dry
contact digital signal is input. To connect to the output of
active transistor sensor, you need to use the open collector
output mode. The wiring of I/O extension module internal
equivalent power and inputs is the same as those of the basic
module, as shown in Figure 3-1.
24V/5V/GND
Logic circuit work power
from extension cable
Logic processing circuit
Extension module internal
equivalent circuit
Sensor
To basic module
+24V
To basic module
COM
Input devices
S/S
X0
X1
X2
Xn
External wiring
Figure 3-1 Internal equivalent input circuit
3.2 I/O Signal State Indicator
The input status indicator displays the status of input terminal.
The indicator turns on when the input is in the ON state.
Otherwise, the indicator is off.
The output status indicator displays the status of output
terminal. The indicator turns on when the output is in the ON
state (Yn is connected with COMn). Otherwise, the indicator
is off. See Figure 3-2.
Power indicator
Input status indicator
Output status indicator
Figure 3-2 Status indicator
4 Output Features
4.1 Relay Output Electric Specifications
Table 4-1 Relay output terminal electric specifications
Item
Relay output terminal
External power
Below 250Vac, 30Vdc
Circuit isolation
By relay
Operation indication
Relay output contacts closed, LED on
Leakage current of open
circuit
-
Min. load
2mA/5Vdc
Max.
output
current
Resistive load
2A/1 point, total current of 8 points
(sharing one COM) < 8A
Inductive load
220Vac, 80VA
Illumination
220Vac, 100W
Response
time
OFF→ON
Max.: 20ms
ON→OFF
Max.: 20ms
4.2 Transistor Output Electric Specifications
Table 4-2 Transistor output electric specifications
Item
Transistor output terminal
External power
5 ~ 24Vdc
Circuit isolation
Photo coupler
Operation indication
LED is on when photo coupler is driven
Leakage current of open
circuit
< 0.1mA/30Vdc
Min. load
5mA (5 ~ 24Vdc)
Max.
output
current
Resistive load
3A/1 point
8A/4 points
1.6A/8 points
Above 8 points, total current increases
0.1A at each point increase
Inductive load
24Vdc, 7.2W
Illumination
24Vdc, 1.5W
Respon
se time
OFF→ON
Max. 0.5ms (100mA/24Vdc)
ON→OFF
Max. 0.5ms (100mA/24Vdc)

3
4.3 Output Connection Example
Connecting an MC100-0808ERN to an MC100-1614BRA is
shown in Figure 4-1. Different output groups can be
connected to different signal voltage circuits. For example,
output group Y0-COM0 can be connected to the 24Vdc circuit,
powered by the local 24V/COM; Y1-COM1, to the 5Vdc circuit;
others, like Y2 ~ Y7, to the 220Vac circuit. That is, different
output groups can work at circuits of different voltages.
COM
24
V
N
L
Switching
power
S
/
S
Y
0
COM
0
Y
1
COM
1
Y
2
Y
3
Y
4
Y
5
Y
6
Y
7
COM
2
Y
10
Y
11
COM
3
X
0
X
1
X
2
X
3
X
4
X
16
X
17
MC
100
-
1614
BRA
X
0
X
1
X
7
S
/
S
Y
0
Y
1
COM
Y
2
MC
100
0808
ERN
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
AC
-
L
AC
-
N
+
24
V
+
5
V
AC
-
L
AC
-
N
Low voltage circuits
220
Vac
circuit
Common terminal
(
use terminal block
)
+
24
V
+
5
V
GND
Figure 4-1 Connecting MC100-1614BRA &
MC100-0808ERN
5 Extension Connection
5.1 Extension Bus Connection
Before power-on, remove the cover of the extension port at
the right of the basic module. Insert the bus plug into the
extension port. If there are more than one extension modules,
connect them one by one. Note that the extension port cover
is detachable. Do not have it lost.
Remove extension port
cover before connection
Extension cable Extension cable
Figure 5-1 Cascade connection of extension module
5.2 Extension Module Addressing
MC100 series PLC can identify the connected extension
module and address them by connection order automatically.
The extension module address is set upon the first power on
and remains unchanged. Therefore do not insert or remove
the extension module during operation, otherwise
abnormalities may occur, or PLC may be damaged.
The addresses of I/O channels are in the octal system,
numbered as 0, 1,…… 7, 10, 11 and so on, without numbers
8 and 9.
The input terminals of all modules (basic and extension) are
numbered as X0, X1, X2, …X7, X10, X11 and so on, while
the output terminals are numbered as Y0, Y1, Y2, …Y7, Y10,
Y11 and so on. Every eight channels form one group. If the
remaining channels are less than 8, the unused numbers will
be left unassigned.
For example, in module MC100-1410BRA, its 14 input
channels are numbered asX0 ~ X15, there will be no
channels numbered as X16 or X17, because the input
channels of the next extension module will start from X20.
Likewise, if the module has 10 output channels that are
numbered as Y0 ~ Y11, there will be no channels numbered
as Y12 ~ Y17, because the output channels of the next
extension module will start from Y20.
The extension modules’ I/O channels are numbered in
accordance with the module’s connection order. See the
following for a numbering example.
EC10-1410BRA EC10- 0808ETN EC 10 -0008 ERN EC10-0800ENN EC10-0008ETN
X0~ X 15
Y0~Y 11
X20~ X 27
Y20~Y 27 Y30 ~ Y37
X 30~X 47
Y 40~ Y47
6 Installation
6.1 Sizes
There are five I/O extension module models:
MC100-0800ENN, MC100-0808ERN, MC100-0808ETN,
MC100-0008ERN and MC100-0008ETN. Their sizes and
installation holes are shown in Figure 6-1.
71.2
81
61
90
4.5
Figure 6-1 I/O extension module sizes and installation holes
6.2 Installation Method
The installation method of extension module is the same as
that of the basic module. See MC100 PLC User Manual for
details. See Figure 6-2 for the installation diagram.
Fix to DIN rail, Push back the clip
35mm wide DIN
Pull out DIN rail clip
Figure 6-2 DIN rail mounting

4
Notice
1. The warranty range is confined to the PLC only.
2. Warranty period is 18 months, within which period
Megmeet Network Power conducts free maintenance and
repairing to the PLC that has any fault or damage under the
normal operation conditions.
3. The start time of warranty period is the delivery date of
the product, of which the product SN is the sole basis of
judgment. PLC without a product SN shall be regarded as out
of warranty.
4. Even within 18 months, maintenance will also be charged
in the following situations:
Damages incurred to the PLC due to mis-operations,
which are not in compliance with the User Manual;
Damages incurred to the PLC due to fire, flood,
abnormal voltage, etc;
Damages incurred to the PLC due to the improper use
of PLC functions.
5. The service fee will be charged according to the actual
costs. If there is any contract, the contract prevails.
6. Please keep this paper and show this paper to the
maintenance unit when the product needs to be repaired.
7. If you have any question, please contact the distributor or
our company directly.
Shenzhen Megmeet Control Technology Co.,Ltd
Address: 5th Floor,Block B，Ziguang Information Harbor,
Langshan Rd, Science& Technology Park, Nahshan District,
Shenzhen
Homepage: www.megmeet.com
All rights reserved. The contents in this document are subject
to change without notice.