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Section 3: The Genesis Controller System—Overview
The Genesis Controller system modules include a Human Machine Interface, or HMI;
at least one (1) Distributed Control Module, or DCM; at least one (1) Distributed
Temperature Module, or DTM; and at least one (1) Input-Output Module, or IOM.
3.1: Genesis Controller Modules Overview
3.1.1 The HMI Module
The HMI (Human Machine Interface) serves as the central monitoring and
interrogation point for a Genesis Controller control & monitoring system. It
allows the operator to access operating control parameters and operating
conditions throughout the heat tracing system network. The HMI communicates
directly with other Genesis Controller modules through CAN bus and Thermon's
communication software or external DCS controllers through Ethernet Modbus
TCP/IP.
HMI
3.1.2: The DCM
The DCM (Distributed Control Module) provides 24 Vdc output to solid state and/or mechanical relays. It also
provides heater current and earth leakage current measurement for up to six (6) independent heaters/circuits.
Every panel must have at leaset one (1) DCM which can control up to six
(6) independent heat trace circuits, each with a unique sub-address
from 1 to 6.
Configuring the DCM
The DCM address(es) are typically set at the factory so that
each individual control relay is configured with its designated
electrical circuit breaker in the panel as designed and built.
If a heating circuit is to be moved to an alternate circuit, it's
necessary to have the set points program to the corresponding circuit
identified at the HMI (see Section 3.2.6: Circuit Settings).
3.1.3: The DTM
The DTM (Distributed Temperature Module) is DIN rail mountable. Every panel will
have at least one (1) DTM which can receive inputs from up to six (6) individually
identified RTD temperature sensors. The DTM has six (6) sub-addresses to
distinguish each of up to six (6) individual sensors. Once a DTM module is
configured on the panel unique address, any RTD sensor may be mapped to any
heater circuit. A single RTD sensor can provide temperature information for an
entire Genesis Controller. In case of a critical process control an individual EHT
circuit can have multiple sensors (up to twenty (20) RTD sensors per heater), and
the total number of DTM cards per panel can vary by system. Refer to the project
specific drawings for each panel.
• For an Ambient Sensing Control Controller, a single RTD sensor can provide
input for the entire panel.
DCM With Solid State Relays
Mounted On Heat Sink
DCM
DTM
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