nVent RAYCHEM Elexant 4010i/4020i User Manual
RAYCHEM-AR-H60624-40X0iOpsManual-EN-1905 nVent.com
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5.5.1 Control Mode
Figure 58 - Control Mode Setting
Purpose:
To set the control mode for the controller.
Options:
Control Mode Description Algorithm Settings
On/Off
In this mode the controller monitors the tem-
perature of the heat trace circuit and compares
it to the Control Setpoint temperature plus the
control temperature is more than the Setpoint
is turned on.
PASC
This proprietary algorithm uses the measured
-
size of the smallest pipe diameter to deter-
mine the optimum duty cycle and cycle period
to maintain the temperature, minimize energy
consumption and prolong the switch life.
Minimum Pipe Diameter
Power Adjust
Proportional
This algorithm constantly monitors the
control sensor temperature and adjusts the
output duty cycle proportionally, whenever the
Contactor Output Type.
Proportional Band
Always On
The output is permanently switched on irre-
spective of the control temperature.
None
Always Off
The output is permanently switched off irre-
spective of the control temperature.
None
Table 18 - Control Modes
Procedure:
Figure 59 - Control Mode