Nor-Cal SDC15 Controller - Manual (Page 118)

■ MV scaling range
When the control output type is set to either SP+MV or PV+MV, the control
output is a continuous output in which the amount of change in the MV is added to
the SP or PV.
• When the output type of control output 1, control output 2 or the auxiliary output
is SP+MV or PV+MV, this item is displayed and can be set.
• The value calculated by the following formula is output according to the output
scaling low/high limit settings:
In case of SP+MV,(MV-50.0)/100.0 x MV scaling range + SP
In case of PV+MV,(MV-50.0)/100.0 x MV scaling range + PV
Handling Precautions
• This function is used for cascade control when the continuous output
of this controller is connected to the RSP (remote SP) of another
controller, with this controller as master and the other controller as
slave. Set the RSP range to MV scaling range, which changes in
proportion to a change in the MV (0–100%) of this controller.
• If ROM version 1 of the instrument information bank( Id02 ) is prior to
version 2.04, neither SP+MV nor PV+MV can be selected as an
output type. The MV scaling range is not displayed and cannot be set.
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Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
Item (Bank) Display Contents Initial value User level
Control output 1 MV scaling
(Setup bank) 0 to 9999
The decimal point position and unit are same
as those of the PV input range type. 200 Simple,
Standard,
High function
Control output 2 MV scaling
(Setup bank) 200
Auxiliary output MV scaling
(Setup bank) 200
output(%)
Scaling high limit
A change of MV An example of the output type is SP+MV
A change of output
depend on MV
Input
0
-10
Scaling low limit 0% 50% 100%
110
100
SP
MV
scaling range