Section 1 - Introduction; Raychem Ngc-30; Product Overview; Control Ngc-30 - Pentair raychem ngc-30/uit2 Programming Manual

seCtion 1 – introduCtion

1.1 rayChem nGC-30

industrial heat tracing solutions

1.1.1 ProduCt oVerVieW

This manual describes how both the Raychem NGC-20 and Raychem NGC-30 can be programmed
via the User Interface Terminal (NGC-UIT2-EX). The Raychem NGC-20 and Raychem NGC-30 are
part of the same family of controllers.
The Raychem NGC-20 is a compact networked single point heat-trace controller with an approved
integral safety temperature limiter (SIL 2). The controller is approved for use in Zone 1 and Zone 2
hazardous areas and can be mounted directly on the heat-traced pipe. Up to 247 individual Raychem
NGC-20 controllers can be connected in a single RS-485 multi drop "daisy chained" network and
communicate to a central user interface, the NGC-UIT2-EX. Up to two temperature sensors can be
connected directly to the controller. The limiter has its own temperature sensor.
The Raychem NGC-30 is a multipoint electronic control, monitoring and power distribution system
for heat-tracing used in process-temperature maintenance and freeze-protection applications.
The Raychem NGC-30 system can control up to 260 heat-tracing circuits with multiple networked
panels. Each panel can control up to 40 individual heat-tracing circuits and monitor up to 128
temperature inputs, with optional power distribution. The Raychem NGC-30 is available with two
output types: Electromechanical Relays (EMRs) or Solid-State Relays (SSRs). Both types allow
switching up to 60 amps at 600 Vac with single or three-phase power. Up to four Resistance
Temperature Detector (RTD) sensor inputs for each heat-tracing circuit allows for a variety of
combinations of temperature control, monitoring, and alarming. Systems can be configured for
nonhazardous and hazardous locations. The ability to monitor and configure the controller is
available both locally and remotely with the Raychem Supervisor software.
NGC-UIT2
Fig. 1.1 NGC-30 system, system example

1.1.2 ControL nGC-30

The Raychem NGC-30 measures temperatures with 3-wire, 100-ohm platinum RTDs connected
directly to the unit, or through optional Remote Monitoring Modules (RMM2 module). Each RMM2
module accepts up to eight RTDs. The RMM2 modules are typically located near the desired
measurement location (RTDs). Multiple RMM2 modules are networked over a single cable to
the NGC-30, significantly reducing the cost of RTD field wiring. The NGC-30 system supports
260 temperature inputs via the CRM/CRMS boards. Using RMM2 modules, an additional 128
temperature inputs can be supported for a maximum of 388 temperature inputs. With EMRs
and SSRs, the NGC-30 can be configured for On/Off, ambient sensing, and proportional ambient
sensing modes. Additionally, with SSRs, the panel can be configured for proportional, power
limiting, and soft start modes.
EN-RaychemNGC30UIT2Programming-AR-H58186 02/16
NGC-30 NGC-30
Panel Panel
RS-485
Field located
RMM2
To next
RMM2
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