MS4PMUHVT Multi-Stage Electronic Temperature Control with ...
MS4PMUHVT Multi-Stage Electronic Temperature Control with ...
MS4PMUHVT Multi-Stage Electronic Temperature Control with ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Independent Setpoint Mode<br />
Independent Setpoint mode is used for applications<br />
requiring cooling and heating. Where desirable, stages<br />
may overlap or have space between them. See<br />
Figure 16.<br />
Setpoint is the desired heating temperature. It is the<br />
basis for the reverse stages.<br />
In Reverse mode (heating applications), when Setpoint<br />
is reached on a temperature rise, the N.O. relay<br />
contacts open, ending the On cycle.<br />
Setpoint cannot be set higher than Setpoint 2, nor can<br />
Setpoint 2 be set lower than Setpoint. If overlapping<br />
adjustment is attempted, the setting that is not being<br />
adjusted will adopt the value of the setting that is being<br />
adjusted.<br />
Differential is the operational range of <strong>Stage</strong> 1.<br />
Setpoint 2 the desired cooling temperature<br />
programmed by the user. It is the basis for the direct<br />
stages.<br />
In Direct mode (cooling applications), when Setpoint is<br />
reached on a temperature drop, the N.O. relay<br />
contacts open, ending the On cycle.<br />
Differential 2 is the operational range of <strong>Stage</strong> 2.<br />
Setpoint 3 is the offset from Setpoint that activates<br />
<strong>Stage</strong> 3.<br />
Differential 3 is the operational range of <strong>Stage</strong> 3.<br />
Setpoint 4 is the offset from Setpoint 2 that activates<br />
<strong>Stage</strong> 4.<br />
Differential 4 is the operational range of <strong>Stage</strong> 4.<br />
Interstage Time Delay is the minimum amount of time<br />
between two successive stages when multiple stages<br />
are called for in rapid sequence.<br />
<strong>Temperature</strong><br />
Interstage<br />
Time Delay<br />
Cooling<br />
<strong>Stage</strong> 4<br />
Differential 4<br />
<strong>Stage</strong> 2<br />
Differential 2<br />
Setpoint 4<br />
Setpoint<br />
<strong>Stage</strong> 1<br />
Differential<br />
Setpoint 3<br />
<strong>Stage</strong> 3<br />
Differential 3<br />
Heating<br />
Interstage<br />
Time Delay<br />
Time<br />
Figure 16: Independent Setpoint Mode<br />
<strong>MS4PMUHVT</strong> <strong>Multi</strong>-<strong>Stage</strong> <strong>Electronic</strong> <strong>Temperature</strong> <strong>Control</strong> <strong>with</strong> Relay Pack Product/Technical Bulletin 9
Change language