Omron EJ1G, User Manual

Page: 93 / 237

72
Setting Control Specifications
Section 5-3
The SP will not be changed automatically, even if the input type or SP
Limiter is changed. Although the SP will not be changed automatically,
the internal SP used for control will be limited to the input range or SP
Limiter (whichever range is narrower).
(2) The SP is not changed, but the internal SP used for control is limited by
the upper limit of the input range.
(3) The decimal point position is the same as set for the Decimal Point Posi-
tion B parameter.
5-3-4 Setting the SP Ramp
The SP ramp function restricts the width of changes in the set point as a rate
of change. When the SP ramp function is enabled and the change width
exceeds the specified rate of change, this function can restrict the set point
within an area, as shown in the following diagram.
While the SP ramp function is operating, control will be performed not for the
specified set point but rather for the set point restricted by the rate of change
set for the SP ramp function.
The rate of change during SP ramp operation is specified by the SP Ramp
Rise Value, SP Ramp Fall Value, and SP Ramp Time Unit parameters. The
SP ramp function will operate when the SP Ramp Rise Value or SP Ramp Fall
Value is not set to 0 (disabled).
The Ramp SP can be checked by using the Internal SP parameter.
SP Limiter range
SP
SP Limiter range
Internal SP
MV Upper Limit
SP
Internal SP
Variable type Parameter name Setting/monitoring
range
Default
E5/A5 (See note 1.) SP Ramp Time Unit
(Channel)
0: Seconds
1: Minutes 1
D0/90 SP Ramp Rise Value
(Bank)
0 to 9999 EU/s or min
(See note 2.) 0
SP Ramp Fall Value
(Bank)
0 to 9999 EU/s or min
(See note 2.) 0
C4/84 Internal SP (Channel)
−
1999 to 9999 EU ---
Conditions for use No special conditions.
Time
SP
SP Ramp
Point of change
SP after change
SP before change
SP Ramp Rise
Value
SP Ramp Time Unit