5 Advanced Operations
5 - 8
E5@C-T Digital Temperature Controllers User’s Manual (H185)
* If the Controller is equipped with HB/HS alarm detection, it is set by default to ha (Heater Alarm).
• The heating/cooling operation of the control outputs will switch when the Direct/Reverse
Operation parameter is set to direct operation.
• When DRS (Invert Direct/Reverse Operation) is set for an Event Input Assignment 1 to 6
parameter, control will start with the opposite of the setting of the Direct/Reverse Operation
parameter when the event input turns ON. When the event input turns OFF, control will return to
operation according to the setting of the Direct/Reverse Operation parameter. For details on event
inputs and control combined with the Direct/Reverse Operation parameter, refer to Control by
Inverting Direct/Reverse Operation on page 5-13.
• If heating/cooling control is selected, also set the Dead Band, Proportional Band (Cooling),
Integral Time (Cooling), Derivative Time (Cooling), and Heating/Cooling Tuning Method
parameters.
z Dead Band
• For heating/cooling control, the dead band is set with the set point as its center. The dead band
width is the set value of the Dead Band parameter (Adjustment Level). Setting a negative value
produces an overlapping band.
• If an overlapping band is set, the bumpless function may not operate when switching between
manual operation and automatic operation.
• The default is 0.0 EU for Controllers with Temperature Inputs and 0.00% FS for Controllers with
Analog Inputs.
Auxiliary Output 2
Assignment
sub2 Alarm 2Alarm 2Alarm 2Alarm 2
Auxiliary Output 3
Assignment
sub3 Alarm 3Alarm 3Alarm 3Alarm 3
Auxiliary Output 4
Assignment
sub4 Alarm 4
Control output
(cooing)
Alarm 4 Alarm 4
Parameter name Display
Without control output 2 With control output 2
Standard Heating/cooling Standard Heating/cooling
0
PV
0
PV
Output
Dead band: Dead band
width = A positive value
Output
Heating
side
Cooling
side
Set point
Overlapping dead band: Dead band
width = A negative value
Heating
side
Cooling
side
Set point
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