6 Parameter Settings and Functions
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(3) Heating and cooling control
Heating and cooling control mode: heating and cooling with a single temperature controller
when it is difficult to control subject temperature with only heating or cooling.
Heating and cooling control mode controls the object using different PID time constants for
each heating and cooling. It is also possible to set heating and cooling control in both PID
control or ON/OFF control mode. Heating/cooling output can be selected among Relay
output, SSR drive voltage output and current output depending on model types choosen
according to your application environment. (Note that only standard SSR control is available
for SSR drive output in OUT2.)
For heating/cooling control, each output for heating and cooling is automatically
allocated as described in the following table.
Series
Remarks
TM4
CH1 OUT CH2 OUT
Heating output: Selectable control output by model
Cooling output: Selectable control output by model
CH3 OUT CH4 OUT
TM2
CH1 OUT AL1 OUT
Heating output: Selectable control output by model
Cooling output: Relay output fixed
CH2 OUT AL2 OUT
For TM2 Series, heating output can be selected by models from relay output, SSR drive output
and current output. Cooling output is fixed to relay output.
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