nVent RAYCHEM Elexant 4010i/4020i User Manual
RAYCHEM-AR-H60624-40X0iOpsManual-EN-1905
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CHAPTER–3
3. PRODUCT OPERATIONS
3.1
Control Features
This section describes the control features available in the Elexant 4010i/4020i controllers and how to set their associ
-
ated parameters.
3.1.1
Output Type
The Elexant 4010i/4020i controller supports both Electro-Mechanical Relay (EMR) and Solid-State Relay
(SSR) outputs.
WARNING:
Ensure that the Output Type is correctly chosen for your
installation.
3.1.1.1 Contactor Output (Default)
This contactor output type is used for EMR variants of Elexant 4010i and Elexant 4020i that are con-
nected to contactors. The output is inhibited from changing its state for two seconds after a previous
state change. As a result, this output type is incompatible with algorithms and features that rely on rapid
switching, but helps prolong the switch life.
Available Control Algorithms
:
On/Off, PASC, Always On, Always Off.
Available Protection Algorithms
:
High Temperature Cut-out, Low Temperature Cut- out, Ground Fault
Trip.
3.1.1.2 SSR Output
Solid-State Relay (SSR) control is appropriate for applications requiring rapid switching. This includes
installations using all common electric heat tracing cables, including series, parallel, self-regulating and
constant wattage types, and applications requiring equipment protection algorithms. When using the
SSR Output control type, the Contactor Output is held in a user defined state continually, unless the SSR
fails. In that case, the Contactor output is switched to the opposite state. This allows the Contactor
output to be used to control a secondary switching device to turn off the load.
Available Control Algorithms
:
On/Off, PASC, Proportional, Always On, Always Off.
Available Protection Algorithms:
Output Limiting,
Switch (SSR) Protection, Circuit Breaker Protection,
High Temperature Cut-out, Low Temperature Cut-out, Ground Fault Trip.
3.1.1.3 Analog SSR
This output may be used to control an external analog device using a 0-10VDC signal that is proportional
to a 0-100% output duty cycle. This signal is designed for integration with external switching devices.
Therefore, features that require the knowledge of the switch state at a given moment in time are dis-
abled under this output type.
Available Control Algorithms
:
On/Off, PASC, Proportional, Always On, Always Off.
Available Protection Algorithms
:
High Temperature Cut-out, Low Temperature Cut-out, Ground Fault
Trip.
3.1.2
Control Mode Algorithms
This section describes the different control mode algorithms available in the Elexant 4010i/4020i and
how to set their associated parameters.
