3.3 Setting Output Specifications
E5CK
3–7
3.3 Setting Output Specifications
JOutput assignments
Ă• Twelve outputs are supported. These functions are assigned to control
outputs 1 and 2, and auxiliary outputs 1 and 2.
Ă• Restrictions on assignment destination are placed on some of the outĆ
puts.
Ă• The following table shows where outputs may be assigned to.
Assignment
Destination
Control Output
Auxiliary
Output
Output Function
1 2 1
Control output (heat)
Control output (cool)
Alarm 1
Alarm 2
Alarm 3
LBA
Time signal 1
Time signal 2
Program end
Stage output
Error 1 : Input error
Error 2 : A/D convertor error
With control output (cool), the conditions for switching from standard control
to heating and cooling control are reached when the output function is assigned
at the cooling side during heating and cooling control.
In other words, heating and cooling control is carried out when control
output (cool) is assigned, and standard control is carried out when outĆ
put is not assigned. For details on heating and cooling control, see ChapĆ
ter 4 Applied Operation/4.1 Selecting the Control Method (page 4Ć2).
Ă• Factory settings are as follows:
control output 1 = Control output (heat)
control output 2 = Alarm 1
auxiliary output 1 = Alarm 2
Ă• Output assignments are set in the control output 1 assignment", conĆ
trol output 2 assignment", auxiliary output 1 assignment" parameters
(setup mode).
Ă• Direct operation" (or normal operation) refers to control where the maĆ
nipulated variable is increased according to the increase in the process valĆ
ue. Alternatively, reverse operation" refers to control where the manipuĆ
lated variable is decreased according to the decrease in the process value.
For example, when the process value (PV) (temperature), is lower than
the set point (SP) (temperature), in a heating control system, the manipĆ
ulated variable increases by the difference between the PV and SP valĆ
ues.
Accordingly, this becomes reverse operation" in a heating control sysĆ
tem, or alternatively, direct operation" in a cooling control system.
Ă• Direct/reverse operation is set in the direct/reverse operation" parameĆ
ter (setup mode). The direct/reverse operation" parameter is factoryĆ
set to
(reverse operation).
F Standard type
JDirect/reverse
operation
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