Omron E5EK User Manual

4.4 How to Use the Remote SP
E5EK
4--11
4.4 How to Use the Remote SP
• Taking a remote SP input (4 to 20 mA) as the set point is referred to
as the “remote SP” function. The remote SP function is enabled only
when the “remote SP (RSP) enable” parameter (option mode) is set to
“ON”.
• Remote SP upper-and lower-limit values can be set by scaling.
• Inputs within the range 4 to 20 mA (-10 to 110%) are allowed as
remote SP inputs. Inputs not within this range are regarded as out-of-
range input values. In this case, input is clamped at the remote SP
lower or upper limit values, and the “RSP” LED blinks.
• If the output function “RSP input error” is assigned for when an out-
of-range remote SP is input, the “RSP input error” output is turned
ON. Control output also switches to the setting of the “MV at PV
error” parameter.
• Set the upper limit value in the “remote SP upper limit” parameter
and the lower limit value in the “remote SP lower limit” parameter
(option mode).
RSP (%)
2.4 (-10%)
420
21.6 (-110%)
Input (mA)
Out-of-range input
(blinks of upper-and lower-limit values)
Upper limit value
Lower limit value
• When the “Set point upper limit” or “Set p oint lower limit” parame-
ters are changed, the remote SP upper-and lower-limit values are for-
cibly changed to the set point upper-and lower-limit values. The fol-
lowing example shows how the remote SP upper-and lower-limit
values are changed when the set point upper limit value is changed
from A to B.
Set point limiter
Upper-and lower-limit values of the limiter
Before change
Changed to
upper limit value
RSP scaling upper-and lower-limit values
Set point
Set point
Upper limit value
changed from A to B
B
A
RSP scaling range
• The set point held internally by the E5EK controller is referred to as
the “local SP (LSP).”
• If the multi-SP function is enabled, set points 0 to 3 are enabled for
use as the local SP.
• Use the “SP mode” parameter to switch between the remote SP and
local SP. When the SP mode parameter is set to “
”(remoteSP),
the “RSP” LED lights. When the SP mode p arameter is set to
“
”, the controller is in the local SP.
JScaling
F Relationship with
set point limiter
JSP mode
LSP
RSP enable
RSP
SP mode

Omron E5EK Specifications

General

Brand	Omron
Model	E5EK
Category	Controller
Language	English