Omron E5GN - Setting Output Specifications

CHAPTER 3 BASIC OPERATION
E5GN
3–8
3.5 Setting Output Specifications
Ă• Set the output period (control period). Though a shorter period provides
better control performance, we recommend setting the control period to
20 seconds or more taking the life expectancy in the case of relay output
into consideration. If necessary, readjust the control period by trial
operation, for example, when the control period parameters are set to
their defaults.
Ă• Set the control period in the control period (OUT1)" parameter (initial
setting level). Default is 20 seconds".
Ă• Direct operation" refers to control where the manipulated variable is
increased according to the increase in the process value. Alternatively,
reverse operation" refers to control where the manipulated variable is
decreased according to the increase in the process value.
High temperature
Manipulated variable
Direct operation
Low temperature
Set value
High temperature
Manipulated variable
Reverse operation
Low temperature
Set value
100%
0%
100%
0%
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 (initial setting level). The direct/reverse operation" parameter
default is reverse operation".
JControl period
Control
period
(OUT1)
JDirect/reverse
operation