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42

value-set value) is smaller than the alarm
setting

5

Deviation
high/low

Alarm when the absolute value of
deviation (| measured value - setting
value |) is larger than the alarm setting
value

± input width

6

Band

Alarm when the absolute value of
deviation (| measured value - setting
value |) is smaller than the alarm setting
value

± input width

Waiting
for
alarm

7

Wait with the
high limit alarm

If the measured value is larger than the
alarm setting value, the measured value
will be ignored when the power is turn on

Input scope

8

Wait with the low
limit alarm

If the measured value is smaller than the
alarm setting value, the measured value
will be ignored when the power is turn on

Input scope

9

Wait with the
deviation

high

alarm

If the deviation value (measured value -
set value) is larger than the alarm setting
value, the measured value will be ignored
when the power is turn on

± input width

10

Wait with the
deviation

low

alarm

If the deviation value (measured value -
set value) is smaller than the alarm
setting value, the measured value will be
ignored when the power is switched on

± input width

11

Wait with the
deviation

high

/low alarm

Alarm when the absolute value of
deviation (| measured value - setting
value |) is larger than the alarm setting
value, but the measured value will be
ignored when the power is switched on

± input width

Wait

for

the
second
alarm

12

Wait again with
the

deviation

high limit alarm

Alarm when the deviation (measured
value-set value) is greater than the alarm
set value, but the measured value will be
ignored when the power is turned on and
the set value changes

± input width

13

Wait again with
the deviation low
limit alarm

Alarm when the deviation (measured
value-set value) is greater than the alarm
set value, but the measured value will be
ignored when the power is turned on and
the set value changes

± input width

14

Wait again with
the

deviation

high/low

limit

alarm

When the absolute value of deviation (|
measured value - set value |) is larger
than the alarm setting value, the
measured value will be ignored when the
power is switched on and the set value

± input width

Содержание MTC-08-NT

Страница 1: ...1 MTC 08 NT Thermostat User Manual Version V1 0 Archive time 2012 7...

Страница 2: ...of Shenzhen megmeet control technology co ltd or directly with the headquarters of the company All rights reserved Contents are subject to change without prior notice Shenzhen megmeet control technolo...

Страница 3: ...he safety standards of the relevant industry strictly comply with the notes and special safety instructions of the relevant equipment provided in this manual and carry out the operation of the equipme...

Страница 4: ...measurement rich functions easy to use This chapter introduces the appearance structure installation size parts technical parameters buffer and accessories of MTC 08 NT 1 1Appearance structure and ins...

Страница 5: ...5Hz 1Hz There is an error See BFM 735 for the error status information LED1 8 OUT1 OUT8 ON The corresponding channel Mark Definition 24V Power supply 24V positive 24V Power supply 24V negative Ground...

Страница 6: ...supply voltage circuit 5V 24V The maximum power supply voltage circuit 30V loop current 0 3A 24Vdc Leakage current when open 0 1mA 30Vdc Minimum load 5mA 5Vdc 24Vdc Sampling cycle 100ms or 1s optiona...

Страница 7: ...n not be written to flash The content of the BFM unit is as follows 1 Channel operation monitoring 2 Channel feature setting 3 Control function setting 4 Multi step function setting 5 Alarm function s...

Страница 8: ...to the output state of the refrigeration end of channel 2 and so on When is 1 the output of the refrigeration end is effective when is 0 the output of the refrigeration end is invalid 5 The failure st...

Страница 9: ...Default value 0 R W Y 817 821 818 822 819 823 820 824 D1 3 Default value 12000 With the input type change R W Y 825 829 826 830 827 831 828 832 A0 3 Default value 0 R N 833 837 834 838 835 839 836 840...

Страница 10: ...962 959 963 960 964 Cool side proportional band Default value 30 Unit 0 1 Range 0 1 1000 0 R W Y 965 969 966 970 967 971 968 972 Cool side integrativ e time Default value 240 Range 1 3600 Seconds R W...

Страница 11: ...ng deviation setting Default value 0 Unit 0 1 Range input range R W Y 1101 11 05 1102 11 06 1103 11 07 1104 11 08 Heat side proportional band adjusting factor Default value 100 Setting range 0 1000 R...

Страница 12: ...The meaning of the pattern is shown in table 1 10 Table1 10 Model specification NO value decimal Significance 1 1 K type thermocouple input range 100 0 200 0 2 2 K type thermocouple input range 100 0...

Страница 13: ...e control output cycle of each channel is set the setting range is 1 100 the default value is 2 the unit is determined according to the temperature control object characteristic selection of 1165 1172...

Страница 14: ...lue will switch smoothly to the next output state 1 5 4 Multi step function The Multi step function Settings of MTC 08 NT buffer BFM are shown in table 1 11 Table 1 11 Multi step function Settings for...

Страница 15: ...464 476 483 495 502 514 521 533 540 temperature Settings for each channel segment The unit is determined according to each input type When the mode is Celsius the unit is 0 1 when the mode is Fahrenhe...

Страница 16: ...615 631 619 635 Alarm 2 setting value 4 Default value 0 R W Y 608 624 612 628 616 632 620 636 Alarm 3 setting value 4 Default value 0 R W Y 609 625 613 629 617 633 621 637 Alarm 4 setting value 4 Defa...

Страница 17: ...ay occur when there are errors due to interference and temperature controller The parameters should be saved again If the parameter is saved in error the parameter will be restored to the factory defa...

Страница 18: ...n is not conducive to their own heat dissipation for the improper installation The distance between MTC 08 NT and the equipment above and below or the cabinet wall should be greater than 15cm and ther...

Страница 19: ...e processing and wiring do not let metal scraps and wire tips fall into the vent hole of the controller which may cause fire failure and wrong operation 3 Remove the foreign body immediately after ins...

Страница 20: ...red the three wire connection It is recommended to short connect the positive and negative terminals L and L of the channel that is not used so as to prevent incorrect data from being detected on this...

Страница 21: ...module or other power supply that meets the requirements The user shall connect the power cord to the power supply input terminal head in case of power failure and then insert the terminal head into t...

Страница 22: ...m the BFM area unit can be read and written through the main module Modbus communication 3 When the parameter saving function is used MTC can read the saved parameters when it is powered on thus runni...

Страница 23: ...shown in figure 1 1 Through the MODBUS address setting knob the addresses of slave stations within 1 9 can be set Use the dial switch to set the communication format The Settings of the dial switch ar...

Страница 24: ...gure 3 2 PLC main module and MTC through MCbus bus connection up to 7 sites can be configured and monitored The wiring diagram is shown below Figure 3 2 3 2 2 set the communication port of the main mo...

Страница 25: ...of network patrol stations as the maximum station number 4 set the additional delay time and the number of retries 5 select single layer for mode setting and set the refresh mode to 16 6 click ok to...

Страница 26: ...mponents the user can operate directly see appendix I list of MCbus dedicated M components For the D element the user can operate through the following five command words 1 read command 4 read the mea...

Страница 27: ...r can operate through the five command words described above Read command 4 1 The main module defines the frame with the MCbus communication buffer D component definitions are shown in the following t...

Страница 28: ...6 D component definitions 1 D elements Explanation D elements Explanation D7532 5 D7548 0 D7533 CH1 heat control output value D7549 0 D7534 CH2 heat control output value D7550 0 D7535 CH3 heat contro...

Страница 29: ...thermostat return the frame with the MCbus communication buffer Take MTC 1 region as an example when D7532 and D7563 change to 6 the write is successful and up to 30 D elements can be written at a tim...

Страница 30: ...at side proportional band D7521 CH4 heat side derivative time D7506 0 D7522 0 D7507 0 D7523 0 D7508 0 D7524 0 D7509 0 D7525 0 D7510 CH1 heat side integral time D7526 0 D7511 CH2 heat side integral tim...

Страница 31: ...defines the frame with the MCbus communication buffer See tables 3 6 and 3 7 for the definition of D components and write command 8 Table 3 12 Settings represent communication special meaning D eleme...

Страница 32: ...cool side proportional band D7550 CH2 cool side derivative time D7535 CH3 cool side proportional band D7551 CH3 cool side derivative time D7536 CH4 cool side proportional band D7552 CH4 cool side der...

Страница 33: ...his routine takes the channel 1 of MTC 1 as an example of course some parameters such as self tuning deviation setting need to be set through the MTC wizard in advance here only to achieve a self tuni...

Страница 34: ...to write applications see chapter 6 application examples The program is based on MCbus and does not involve specific communication timing problems After writing the program you can no longer use the...

Страница 35: ...dule configuration of the structure tree on the left side of the interface 4 In the shortcut menu that pops up select add module and enter the following interface Figure 4 3 Add module 5 Repeat steps...

Страница 36: ...he MTC wizard Settings screen 3 The user can also open and read the saved thermostat configuration by clicking the file file 4 In the parameter configuration process users can right click the relevant...

Страница 37: ...cable the user can monitor the thermostat in real time through the monitoring function set by the MTC wizard The relevant operation methods are shown in the following table Table 4 1 monitoring method...

Страница 38: ...ecution 5 Feature setting and function description This chapter introduces the channel characteristics of MTC and various functions of MTC in detail 5 1 Feature settings The input channel characterist...

Страница 39: ...out changing the D0 and D1 values of each channel Note When the mode is set to 4 5 9 10 when the output is in degrees Fahrenheit 0 1 F the corresponding unit in the output data area will read the temp...

Страница 40: ...than the temperature set value Setting the dead zone of ON OFF control namely the adjusting sensitivity BFM 1024 BFM 1027 can prevent the output from repeatedly changing ON OFF Figure 5 4 ON OFF cont...

Страница 41: ...eding the allowable temperature of the equipment the proper self tuning deviation should be selected Figure 5 5 self tuning schematic diagram Note in the process of self setting the set value deviatio...

Страница 42: ...e measured value set value is smaller than the alarm setting value the measured value will be ignored when the power is switched on input width 11 Wait with the deviation high low alarm Alarm when the...

Страница 43: ...100 and lower limits is 1000 then input width is 0 900 and input width is 900 900 Basic alarm description 1 High limit Alarm when the measured value PV is larger than the alarm setting Figure 5 6 Sche...

Страница 44: ...an the alarm setting value Figure 5 10 Schematic diagram of the deviation low The deviation is positive Figure 5 11 Schematic diagram of the deviation low The deviation is negative 5 Deviation high lo...

Страница 45: ...m of the wait without the deviation low alarm 2 Waiting alarm is a waiting function added to the basic alarm that is the alarm triggered by the measured value when the power is connected is ignored un...

Страница 46: ...2 Alarm dead zone In order to avoid repeated occurrence of the alarm state and non alarm state when the measured value fluctuates around the alarm setting value the alarm dead zone BFM 604 can be set...

Страница 47: ...he repeating start segment the repeating end segment and the repeating number of times the corresponding bit of the multi step set execution mark BFM 552 is written as 1 then MTC starts to perform mul...

Страница 48: ...ve the BFM parameters in its own flash memory which will be readout when the next power supply so as to facilitate the use of the main module and Modbus master station For all BFM parameters that can...

Страница 49: ...perature Set as 9 in BFM 902 the third channel is connected with PT100 thermal resistance to output the temperature of Celsius Set as 27 in BFM 903 the fourth channel is connected to the Cu50 thermal...

Страница 50: ...ntrol function and select 3 9 27 and 37 in the input type selection as shown in the following figure Figure 6 3 Input type selection 5 Select the channel characteristics and input the following conten...

Страница 51: ...pleted in the lower left corner of the interface 6 2 PID control and alarm Example MTC station number is 2 set the first channel to use mode 3 work in the heat mode the given value is 100 0 the contro...

Страница 52: ...ol function and set it according to the figure below Figure 6 7 setting control function 3 Select the alarm function and set it as shown in the figure below Figure 6 8 setting alarm function 4 Right c...

Страница 53: ...eft tree structure and select download from the right click menu 4 Click menu monitor to start monitoring 5 Click chart monitor and select 1 from the self tuning start stop of the corresponding channe...

Страница 54: ...1 1 The beginning section of repetition is 3 the end section of repetition is 6 and the number of repeats is 3 1 Refer to the 6 1 feature to change the first three steps for setting 2 Select the cont...

Страница 55: ...ormally please check the following items Check the status of 24V indicator Light 24Vdc power supply is normal Off The 24Vdc power supply may be faulty if the 24Vdc power supply is normal the MTC is fa...

Страница 56: ...1726 M1790 M1854 Control state channel 1 M1471 M1535 M1599 M1663 M1727 M1791 M1855 control completion status of channel 1 M1472 M1536 M1600 M1664 M1728 M1792 M1856 Alarm 1 status of channel 2 M1473 M1...

Страница 57: ...1875 Alarm 4 status of channel 4 M1492 M1556 M1620 M1684 M1748 M1812 M1876 Initialization complete flag of channel 4 M1493 M1557 M1621 M1685 M1749 M1813 M1877 Auto tuning state of channel 4 M1494 M155...

Страница 58: ...16 M1580 M1644 M1708 M1772 M1836 M1900 M1517 M1581 M1645 M1709 M1773 M1837 M1901 M1518 M1582 M1646 M1710 M1774 M1838 M1902 M1519 M1583 M1647 M1711 M1775 M1839 M1903 M1520 M1584 M1648 M1712 M1776 M1840...

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