Megmeet MTC-04-NVT User Manual

MTC-04-NVT Thermostat User Manual
Thank you for using Megmeet MTC-04-NVT module. Before using the
PLC product, please carefully read this booklet so as to better
understand it, fully use it, and ensure safety.This user manual is to offer
you a quick guide to the design, installation, connection and
maintenance of MTC-04-NVT module, convenient for on-site reference.
Briefly introduced in this booklet are the hardware specs, features, and
usage of MTC-04-NVT module, plus the optional parts and FAQ for
your reference.
This manual MTC-04-NVT module for the following members:
MTC-04-NVT Thermostat User Manual
Version 1.0
Revision date June 16, 2012
BOM

1.Introduction

Model description as 1-1.
M TC 04
N VT
-
-
Table 1-1 Module Description

2.Wiring Instructions

User input wiring terminals shown in figure 2-1.
Table 2-1 MTC-04-NVT enter the user terminal wiring diagram
Figure ① ~ ⑦ wiring must be noted that seven aspects:
VT:Analog and crystal
temperature control, 4
transistor alarm, 4 I/O port
input
Input method
N: No CT (Current test)
Input
The same input and
output channels of
channel number and
module number
Thermostat
Megmeet
①The rmocouple (thermal resistance) signals suggested accessing by
shieded compensation cable. Cables away from power lines
or other wires may produce electromagnetic interference. It is
recommended to use less than 100 m compensation cable (connecting
cable) that be suscepted by noise interference Compensation cable
(cable) exist resistance, will introduce measurement error, adjustment
feature to resolve this issue, please refer to the specific
operation "MTC-04-NVT thermostat user manual."
②Thermal resistance (type Pt100, JPt100, Cu100, Cu50)
required the three-wire connection.
③ If there is too much electrical interference, the shield wire
(thermocouple compensationcable shielding terminal, thermal
resistance of the connecting cable shielding terminal 485 linescreen)
should be connected to ground terminal PG.
④ The thermostat grounding PG should be good grounding.
⑤24V power supply can use the main output of 24Vdc auxiliary power
supply module, you can also use the other to meet the
requirements of power.
⑥ 3.2 user basis having the output performance indicators to select
the appropriate power supply and solid state relays
⑦ Output control of analog quantity, there are four groups of analog
quantity (V1+/I1+/VI1-; V2 + / I2 + / VI2 -; V3 + / I3 + / VI3 -;
V4+/I4+/VI4-), select voltage control or current control output in each
group of analog quantities when temperature control. Current drive load
≤350Ω, voltage drive load≥2KΩ
⑧4 external input support source and sink input, input voltage range
DC18V ~ DC28V.

3.Instructions

3.1 Power indicator

The power indicator of MTC-04-NVT is shown in figure 3-1.
Table 3-1 Power indicator
Project
24Vdc (-15% ～ 20%), the maximum allowable ripple
Power
voltage 5%, maximum power consumption 160mA.

3.2 Performance indicators

Table 3-2 Performance indicators
Project
Thermocoupl
K、 J、 E、 N、 T、 R、 S、 B （Applicable to each channel）
e type
Input
Pt100、Cu100、JPt100、Cu50、Ni120（Applicable
signal
Thermal
resistant type
to each channel）
4~20mA,0~20mA;0~1V,0~5V,1~5V,0~10V(optional
Output
)①
method
Analog
Precision 0.5%
output
Current drivers load ≤350 Ω ， voltage driving load
Specification
≥2KΩ
Power supply voltage circuit：5V～24V；The
biggest power supply voltage circuit：30V；Loop
The output
Output
gate open current：0.3A/24Vdc；leakage current when open：
method
transistor
＜0.1mA/30Vdc；Minimum load：5mA（5Vdc～
24Vdc）
Input method Support source input and sink input
Input
Voltage
port
DC18V~DC28V
range
Sampling period 100 milliseconds or 1 second (optional)
0.1~10 seconds or 1～100
Control cycle
value for 0.2s or 2s
ON/OFF control， Hand control， PID control.Heating
Control method
and cooling PID control②
Type K
－100℃～1200℃（－148℉～2192℉）
Nominal
Type J
－100℃～600℃（－148℉～1112℉）
Type E
Tempe
－100℃～850℃（－148℉～1562℉）
Type N
－100℃～1200℃（－148℉～2192℉）
rature
Type T
－200℃～300℃（－328℉～572℉）
Instruction
Indicators
seconds，The default
1