Transfer Scaling - Omron E5C User Manual

Transfer Scaling

• Reverse scaling is possible by setting the Transfer Output Lower Limit parameter larger than the
Transfer Output Upper Limit parameter. If the Transfer Output Lower Limit and Transfer Output
Upper Limit parameters are set to the same value, the transfer output will be output continuously
at 0%.
• If the SP, SP during SP ramp, or PV is selected, the Transfer Output Upper Limit and Transfer
Output Lower Limit parameters will be forcibly initialized to the respective upper and lower setting
limits if any of the following parameters is changed: Input Type, Scaling Upper Limit, Scaling
Lower Limit, Set Point Upper Limit, Set Point Lower Limit, or Temperature Unit.
If the MV for heating or MV for cooling is selected, the Transfer Output Lower Limit and Transfer
Output Upper Limit parameters will be initialized to 100.0 and 0.0, respectively, when a switch is
made between standard control and heating/cooling control using the Standard or
Heating/Cooling parameter.
• The output current when transfer output signal is set to 4 to 20 mA, the transfer output upper limit
is set to 90.0, and the transfer output lower limit is set to 10.0 is shown in the following graph.
• For scaling from 0.0% to 100.0%, the output for −5.0 to 0.0 will be the same value as for 0.0%, and
the output for 100.0 to 105.0 will be the same value as for 100.0%
E5@C Digital Temperature Controllers User's Manual (H174)
Output current (mA)
20
4
0
10 90
Transfer output
Transfer output
lower limit
upper limit
(The above graph is for when transfer output signal is set to 4 to 20 mA.)
MV (%)
100
5 Advanced Operations
5 - 37
5