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RE10TC Temperature Control Module Operating manual

RE10TC Temperature Control Module Operating manual

Details of the set

Details of the set values Buffer Memory 3.3 Details of the set values NOTE The entered set values are not checked against the range by the RE10TC. 3.3.1 Set values for temperatures (BFM #120 to BFM #129) The disered values of the temperatures are entered in this area of the buffer memory. NOTE To validate changed set values, bit 1 of BFM #340 must be switched ON after changing of the set values (refer to 3.3.16). 3.3.2 Set values for temperatures in stand-by mode (BFM #130 to BFM #139) The temperatures of the ten heating zones can be lowered simultaneously by activating the stand-by mode. The set values for the temperatures in stand-by mode are entered in the buffer memory area from BFM #130 to BFM #139. To enter the stand-by mode, bit 9 of BFM #340 has to be switched ON. The set values in the BFM #120 to BFM #129 become valid again when the stand-by mode is switched OFF by setting bit 1 of BFM #340 to ON. NOTE To validate changed set values, bit 9 of the buffer memory address 340 must be switched ON after changing of the set values (refer to 3.3.16). 3.3.3 Limits and warnings (BFM #140 to BFM #179) In this area, the maximum and minimum temperature warning values and set limits of the individual zones are entered. The values are entered as relative values. The limit is worked out from the set desired value of the respective heating zone ± the relative values. With this type of setting, the tolerance range remains constant even when the desired values are different. In the following example, a upper limit value of 100 (10.0 K) and a lower limit value of 150 (15.0 K) is set. Desired temperature: 392 �C Set value for upper limit: 100 (�T = 10.0 K) Set value for lower limit: 150 (�T = 15.0 K) Fig. 3-9: Example for the setting of limits 402 392 377 °F upper limit set value lower limit 3-16 MITSUBISHI ELECTRIC

Buffer Memory Details of the set values 3.3.4 Integral time TI (BFM #200 to BFM #209) One dataword in the buffer memory area is reserved for the integral time of each temperature controller. The integral time can be entered in steps of 100 ms. If the integral time is set to zero, the I portion of the controller is switched off. NOTE To validate changed set values, bit 0 of the buffer memory address 340 must be switched ON after changing of the set values (refer to 3.3.16). 3.3.5 Derivative time TD (BFM #210 to BFM #219) The derivative time can be entered in steps of 100 ms. If the derivative is set to zero, the D portion of the controller is switched off. NOTE Only after setting bit 0 of BFM #340 to “1” changed set values become valid (refer to 3.3.16). 3.3.6 Shortest ON time for heating and cooling (BFM #220 to BFM #239) The entered value is the ON time for an output at a duty cycle of 1%. The unit are 10 ms. A duty cycle less than 5 % is suppressed. Calculation of the minimum ON time: t = (value for shortest ON time) � 10 ms � 5 (%) NOTE To validate changed set values, bit 0 of the buffer memory address 340 must be switched ON after changing of the set values (refer to 3.3.16).. 3.3.7 Temperature offset (BFM #260 to BFM #269) The offset value is added to the measured value of the temperature in order to decrease or increase the real value. NOTE To validate changed temperature offsets, bit 0 of the buffer memory address 340 must be switched ON after changing of the offsets (refer to 3.3.16). 3.3.8 Duty cycle when a sensor error is detected (BFM #270 to BFM #279) The duty cycle stands for the on ratio of an output: 0 %: switched off 50 %: switched on for half the period 100 %: continuously switched on. A fixed duty cycle can be specified for each controller. The respective output is driven with this duty cycle when a error is detected for the temperature sensor by the sensor short circuit monitoring. MITSUBISHI ELECTRIC 3 - 17

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