14
for slow temperature rise, the unit of temperature control period is seconds, but when the temperature
control object is selected for fast temperature rise, the unit of temperature control period is hundreds of
milliseconds.
* 4. #981 ~ #984: overlap/deadband.
* 5. #989 ~ #992: Undershoot suppression factor.
* 6. #997: controls the start/stop Settings. Bit0 corresponds to channel 1, Bit1 corresponds to channel 2,
and so on. Is 1 when the channel opens the heating temperature control, is 0 when the channel closes
the heating temperature control; M0 ~ M3 elements map directly to Bit0 ~ Bit3 of #997, and the start and
stop of each channel can be directly controlled by setting M0 ~ M3 elements.
* 7. #999: auto-tuning enable. Bit0 corresponds to channel 1, Bit1 to channel 2, and so on. When is 0, it
means self-tuning is closed or self-tuning is completed; when is 1, it means self-tuning is opened (at this
time, the channel should be set in the state of temperature control and heating); M8 ~ M11 elements map
directly to Bit0 ~ Bit3 of #999. By setting M8 ~ M11 elements, you can also directly control the opening
and closing of each channel self-tuning.
* 8. #1008 ~ #1011: heat/cool action. When the "position proportional PID" mode is selected, the MV
value of temperature control output is the change of PID output value.
* 9. #1016 ~ #1019: manually output Settings. Set the duty cycle of the constant output of each channel,
the setting range is: 0 ~ 1000 (unit is 0.1%), the default value is 0.
* 10.#1040 ~ #1044: selection of simulation quantity temperature control mode. 4 ~ 20mA, 0 ~ 20mA, 0 ~
1V, 0 ~ 5V,1 ~ 5V, 0 ~ 10V can be selected, the default value is 0 (4 ~ 20mA).
Note: please do not connect the MTC with the heating execution object before selecting the
temperature control mode of the simulation output, so as to avoid misoperation of the heating
equipment; This setting is effective only when the MTC is reenergized after the temperature
control mode of analog output is selected and saved.
* 11. #1149 ~ #1152: set the rate of change to increase. #1157 ~ #1160: set the rate of change to
decrease. Range 0 ~ range, when set to 0, it means that there is no limit for l/l/cooling, and the unit is
℃
/
min.
* 12. #1165 ~ #1168: temperature control object feature selection. When the object of slow temperature
rise is selected, the temperature control output period, integral time and differential time are measured in
seconds. When the object of rapid temperature rise is selected, the temperature control output period,
integral time and differential time are measured in hundreds of milliseconds.
* 13. #1205 ~ #1208: manual/automatic no disturbance switch Settings. When the manual/automatic
non-disturbance switch setting is effective, the module will switch from manual mode to automatic mode
or from automatic mode to manual mode, and the temperature control output MV value will switch
smoothly to the next output state.
* 14. #1213 ~ #1216: external manual/automatic switching of input Settings. When both external
manual/automatic input Settings and external input are valid, the manual/automatic temperature control
modes switch to each other. The external port inputs IN1 control channel 1, IN2 control channel 2, and so
on.
1.5.4 Multi-step function setting
The multi-step function Settings of mtc-04-nvt buffer (BFM) are shown in table 1-11
