Megmeet MC200 Series Quick Start Manual

MC200-2TC
User Quick Start Manual
Thank you for using MC200 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 MC200 series PLC,
convenient for on-site reference.
This manual is for the following MC200 series members:
MC200-2TC Thermocouple Module
Version：V1.1
Revision Date：2010-06-29
BOM Code：R29090046
For detailed product information, please refer to MC200 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.
Thermocouple Module
Software User Manual ,
2.2 Cable connection and specification
It is recommended to use stranded copper cables and prefabricate
insulated plugs to ensure connection quality. The following table lists the
sectional areas and models of the recommended cables.
Recommended
Cable
AC power line
AWG12/AWG18
（L、N）
Ground
and
line
Input signal (X) AWG18/AWG20
Output signal
AWG18/AWG20
(Y)
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. Thermocouple signals are connected by shielding compensation
cables, which should be routed separate from power cables or other cables
that may be source of electrical interference. An appropriate compensation
cables( within 100m) is recommended to reduce the noise interference.
Compensation cable has impedance, which can cause measurement error.
This problem can be addressed through characteristics adjustment. For
details, refer to 3 Setting Characteristics.
Terminal and heat shrink
Cross-Section
NO.
1.0—2.0mm 2 insulated tubing terminal, or
Wire end tinning treatment
AWG12 2.0mm 2 insulated tubing terminal, or
Wire end tinning treatment
0.8—1.0mm 2
UT1-3 or OT1-3 cold-pressed
0.8—1.0mm 2
√
tubing
H1.5/14 prefabricate
H2.0/14 prefabricate
terminal, Φ3 or Φ4 heat
shrink tubing