Zone 2 Control & Monitoring Panels

Raychem NGC-40

A diagram illustrates the Raychem NGC-40 system, showing local monitoring via a TOUCH 1500 touch screen display and remote configuration/monitoring via Supervisor software.

The Raychem NGC-40 is a multipoint electronic control system with a unique single point controller architecture for heat-tracing used in process temperature maintenance and freeze protection applications. By taking advantage of innovative modular packaging techniques, the NGC-40 control system provides configuration and component flexibility so that it may be optimized for a customer's specific needs. The NGC-40 uses a single controller module per heat-tracing circuit for maximum reliability. The NGC-40 control system in combination with the solid-state relays can be used for 1-phase and 3-phase heat-tracing circuits up to 63 Amp at 690 Vac. The NGC-40 control modules include ground-fault measurements and as well single-phase and three-phase line current measurements. The Safety Temperature limiter can be used in combination with hazardous area approved contactors for control limited designs in Zone 1 applications (with controller panel in Zone 2).

Temperature inputs: Each IO module accepts up to four additional RTD inputs. Each RMM3 module installed in the field can accept up to 8 RTDs. 16 RMM3 Modules can be daisy chained together via RS-485 for a total of 128 (8x16) RTDs. Since multiple RMM3's can be networked over a single cable to the NGC-40, the cost of RTD field wiring will be significantly reduced.

Digital inputs: The NGC-40 control system can be extended with the Digital Input module RMM2-DI. This enables the capability monitoring of equipment in the field like circuit breakers, switches etc.

Communication: The NGC-40 support Industry 4.0 and the Internet of Things (IoT) by offering a flexible Modbus map creating a very easy way of integrating the TOUCH 1500 user interface with external control systems. The NGC-40 system supports multiple communications ports, allowing serial interfaces (RS-485 and RS-232) and Ethernet connections to be used with external devices. All communications with the NGC-40 panel are accomplished through the NGC-40-BRIDGE module which acts as the central router for the system, connecting the panel's control modules, IO modules, TOUCH 1500 touch screen and Remote Monitoring Modules (RMM3), as well as upstream devices such as Raychem Supervisor and the TOUCH 1500 user interface.

Raychem NGC-30

A diagram depicts the Raychem NGC-30 system, with local monitoring via a TOUCH 1500 touch screen display and remote configuration/monitoring via Supervisor software.

The Raychem NGC-30 is a multi-circuit electronic control system for heat-tracing used in process-temperature maintenance and freeze-protection applications. The NGC-30 Controller can accommodate temperature inputs from a variety of sources: hard-wired to the panel mounted CRM(S) modules or from Remote Monitoring Modules (RMM3). The NGC-30 for Zone 2 applications is equipped with the card rack module for solid-state-relays (CRMS), rated up to 63 Amp at 690 Vac. Up to four Pt100 sensor inputs for each heat-tracing circuit allow for a variety of combinations of temperature control, monitoring, and alarming. The ability to monitor and configure the controller is available both locally and remotely with the User Interface Unit (NGC-UIT3-EX) and the Supervisor software.

Raychem Elexant 4020i

A photograph shows the compact, touch-screen-based Raychem Elexant 4020i controller.

The Raychem Elexant 4020i is a compact, full-featured, touch screen based, single-point heat-tracing controller. It provides control and monitoring of Electric Heat-Tracing (EHT) circuits for both freeze protection and process temperature maintenance. This controller can monitor and alarm on high and low temperature, high and low current, ground-fault levels, voltage, and supports a host of additional features to offer the utmost in control and monitoring of EHT. The Elexant 4020i controller provides three output types: a line powered relay for driving contactors, a DC output for driving solid-state relays (SSRs) and a 0-10 V analog output for driving variable output power modules. Multiple communication ports allow flexible connectivity for remote monitoring, configuration, and ease of integration with Supervisor software, TOUCH 1500-EX or a Process Control System.

Solid state relay modules

The Zone 2 approved solid state relay (SSRs) modules are available in various versions and may be used with any of the controller products outlined above. They are mounted on the side of the panel enabling good heat transfer to keep heat away from the inside of the panel. The heated SSR module always contains groups of three SSR modules mounted on one heat sink. The Type of SSR, including voltage, amperage, inrush current as well as the cable size and type of cable are specified at the panel configuration procedure. The minimum ambient operating temperature of the heated SSRs is –55°C.

Elexant 9200i wireless radio

Each panel can be optionally equipped with the Elexant 9200i wireless radio modules. The radios enable wireless communications between the Zone 2 panels and the network User Interfaces such as the TOUCH 1500-EX, UIT3-EX, and/or Supervisor. The radios using 868 MHz and 2.4 GHz are available, and they support point-to-point, star, line, and Mesh network topologies. Security is ensured through use of the 128-bit Advanced Encryption Standard (EAES). Reliability is enhanced by network self-healing capabilities and auto-negotiation of alternate pathways in the event of lost communications. Antennas can be installed on the panel or when needed, antenna packages are available to allow remote installation for improved range. For more details see the specifications of the Elexant 9200i.