Mitsubishi Electric NZ2GF2B-60TCTT4 User Manual page 23

(7) Suppression of peak current
Current flows into a heater can be suppressed by controlling so that each channel's output does not turn on at the
same time as other channels. This function also saves energy and cost.
When the peak current
suppression function is not used
CH1
Transistor
output
CH2
Transistor
output
CH3
Transistor
output
CH4
Transistor
output
Because all the transistor outputs used
turn on at the same time, the peak current
becomes high.
Peak current
(8) RFB limiter function
The RFB (reset feed back) limiter suppresses an overshoot which is liable to occur at a startup or at an increase
of temperature process value (PV).
(9) Correction of temperature process value (PV)
The following functions can easily correct the difference between the temperature process value (PV) and the
actual temperature.
• Normal sensor correction (one-point correction) function: Corrects the difference by setting the rate of
correction value to the full scale of the input range.
• Sensor two-point correction function: Corrects the difference based on the inclination of the two points set in
advance.
• Primary delay digital filter setting: Smoothens transient noise and absorbs its sudden change.
(10)Non-volatile memory for backing up set values
The set values in the remote buffer memory, such as the set values related to PID control, can be backed up to a
non-volatile memory. Re-setting these values is thereby not needed when the power supply of the temperature
control module is turned off and on or reset.
20s
CH1
Transistor
output
CH2
Transistor
output
CH3
Transistor
output
CH4
Transistor
output
Peak current
CHAPTER 1 TEMPERATURE CONTROL MODULE
When the peak current
suppression function is used
20s
5s 5s 5s
Shifting ON timing of each transistor output
reduces the maximum amount of peak
current to the amount for one channel.
1
5s
21