Megmeet MC100 Series User Manual

MC100-2TC/4TC Thermocouple Module User Manual
Thank you for using MC100 series PLC. Before using the product,
please carefully read this manual so as to better understand it, fully use it,
and ensure safety. This quick start manual is to offer you a quick guide to the
design, installation, connection and maintenance of MC100 series PLC,
convenient for on-site reference.
This manual is for the following MC100 series members:
MC100-2TC Thermocouple Module
MC100-4TC Thermocouple Module
Version：V1.0
Revision Date：2010-01-15
BOM Code：R29090040
For detailed product information, please refer to MC100 Series PLC
User Manual , X-Builder Programming
MC200/MC100 Series PLC Programming Reference Manual . For ordering the
above user manuals, contact your Megmeet distributor or sales office.
1. Appearance and Part Names
Fig. 1-1 Appearance and part name
2. Installation Description
2.1 Installation method
DIN rail mounting
Generally, you can mount the PLC onto a 35mm-wide rail (DIN). Open
the DIN snap-fit at the bottom of the module and lock the bottom of the
module onto the DIN rail; Rotate module close to the DIN guide rail and close
the DIN snap-fit with a double-checking.
Screw fixing
Fixing the PLC with screws can stand greater shock than DIN rail
mounting. M3 screws can be chosen to fix the PLC onto the backboard of the
electric cabinet through the mounting holes on PLC enclosure, as the
following figure.
Software User Manual ,
and
2.2 Cable connection and specification
It is recommended to use
prefabricate insulated plugs to ensure connection quality. The following
table lists the sectional areas and models of the recommended cables.
Recommended
Cable
NO.
AC power line
AWG12/AWG18
（L、N）
Ground line AWG12
Input signal (X) AWG18/AWG20
Input signal (Y) AWG18/AWG20
Fix the prepared cable head onto the PLC terminals with screws
correctly. Fastening torque: 0.5~0.8Nm.
◆For the safety (to prevent electric shock and fire accidents) and lower
noise, the ground terminal of the controller should be connected in
accordance with the requirements from national electrical regulations, and
the ground resistance should be less than 100 Ω . Single point grounding
should be used when wiring multiple controllers, and the ground wire cannot
form a loop. As shown in the diagram below:
×
Note for wiring:
1. It is recommended to use a shielded twisted-pair cable for analog input.
The cable should be far away from power cable or other cables that may
generate electrical power interference.
2. If there is interference in the external electrical wiring and the input signal
fluctuates, you can connect a smoothing capacitor (0.1μF ~ 0.47 μF /25V).
3. If the current channel uses the current input mode, short-circuit the
voltage input terminal and the current input terminal.
4. The analog power supply can use the auxiliary output 24Vdc power supply
of the main module, or other required power supply.
stranded copper conductors and
Terminal and heat shrink
Cross-Section
tubing
H1.5/14 prefabricate
1.0—2.0mm 2 insulated tubing terminal, or
Wire end tinning treatment
H2.0/14 prefabricate
2.0mm 2 insulated tubing terminal, or
Wire end tinning treatment
0.8—1.0mm 2 UT1-3 or OT1-3 cold-pressed
terminal, Φ3 or Φ4 heat
2
0.8—1.0mm
shrink tubing
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