Setting Output Specifications - Omron E5GN User Manual

CHAPTER 3 BASIC OPERATION

3.5 Setting Output Specifications

JControl period
Control
period
(OUT1)
JDirect/reverse
operation
Manipulated variable
100%
0%
Low temperature Set value
Direct operation
3–8
• 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.
• Set the control period in the control period (OUT1)" parameter (initial
setting level). Default is 20 seconds".
• 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.
Manipulated variable
100%
High temperature
For example, when the process value (PV) (temperature) is lower than
the set point (SP) (temperature) in a heating control system, the manip
ulated variable increases by the difference between the PV and SP val
ues.
Accordingly, this becomes reverse operation" in a heating control sys
tem, or alternatively, direct operation" in a cooling control system.
• Direct/reverse operation is set in the direct/reverse operation" parame
ter (initial setting level). The direct/reverse operation" parameter
default is reverse operation".
0%
Low temperature Set value
Reverse operation
High temperature