E5CNH E5AN-H E5EN-H Digital Controllers User's Manual - OMRON

Setting the SP Upper and Lower Limit Values Section 4-6
Switching Setting
Change Enable/
Disable
Switching
Communications
Write Enable/Disable
Switching Alarm
Latch Cancel
Parameters
100
When WTPT (Setting Change Enable/Disable) is set for either the Event Input
Assignment 1 or Event Input Assignment 2 parameter, the setting change will
be disabled when event input 1 or 2 turns ON and will be enabled when the
input turns OFF.
Only event inputs 3 and 4 can be set to Communications Write Enable/Disable.
When CMWT (Communications Write Enable/Disable) is set for either the
Event Input Assignment 3 or Event Input Assignment 4 parameter, communications
writing will be enabled when event input 3 or 4 turns ON and will be
disabled when the input turns OFF.
When LAT (Alarm Latch Cancel) is set for either the Event Input Assignment 1
or Event Input Assignment 2 parameter, all alarm latches (alarms 1 to 3,
heater burnout, HS alarm, and heater overcurrent latch) will be cancelled
when event input 1 or 2 turns ON.
4-6 Setting the SP Upper and Lower Limit Values
4-6-1 Set Point Limiter
Setting Input contact Status
Event input 1 or 2 OFF Enabled
Event input 1 or 2 ON Disabled
Setting Input contact Status
Event input 3 or 4 OFF Disabled
Event input 3 or 4 ON Enabled
Setting Input contact Status
Event input 1 or 2 OFF ---
Event input 1 or 2 ON Cancelled
Symbol Parameter: level Description
ev-1 Event Input Assignment 1: Initial setting level Function of
ev-2
ev-3
Event Input Assignment 2: Initial setting level
Event Input Assignment 3: Initial setting level
event input function
ev-4 Event Input Assignment 4: Initial setting level
ev-b Bank Numbers Used: Initial setting level
The setting range of the set point is limited by the set point limiter. The set
point limiter is used to prevent the control target from reaching abnormal temperatures.
The upper- and lower-limit values of the set point limiter are set
using the Set Point Upper Limit and Set Point Lower Limit parameters in the
initial setting level. When the set point limiter is reset, the set point is forcibly
changed to the upper- or lower-limit value of the set point limiter if the set point
is out of the limiter range. Also, when the input type and the temperature unit,
scaling upper-limit value, or lower-limit value are changed, the set point limiter
is forcibly reset to the input setting range or the scaling upper- or lower-limit
value.