Section 1-Overview; Introduction; Controllers Covered By This Manual; Product Overview - nvent 910 Series Installation, Operating And Maintenance Instructions

SECTION 1—OVERVIEW

1.1 INTRODUCTION

1.2 CONTROLLERS COVERED BY THIS MANUAL

1.3 PRODUCT OVERVIEW

This manual provides information pertaining to the installation, operation, testing, adjustment,
and maintenance of the nVent RAYCHEM Model 910 Series Heat Tracing Controller.
Additional copies of this user manual may be ordered separately through your nVent
representative or online at nVent.com using the document number H56873.
This document covers the 910 Series Heat Trace Controllers and its available options. The
information coincides with the specific releases of firmware for the 910 product which are
listed on the front page. As nVent releases new firmware to modify or enhance the product
significantly, new documentation will accompany these releases. To ensure that you are using
the correct documentation for your particular version of controller, please check the firmware
version number of the 910 against the version number listed on the front of this manual. This
may be displayed using the Operator Console or a communicating device. As subsequent
changes are made, supplements to this document will be issued and included in manuals
shipped after the firmware is released. Supplements will make specific reference to the
operational or functional changes, and are available at nVent.com.
1.3.1 DESCRIPTION
The 910 Series electronic Heat Tracing Controller controls, monitors, and communicates
alarms and data for one heating circuit. The ability to install the units in Class 1, Division 2
areas supports direct field installation, if desired. It is available with a solid-state relay (SSR)
output for use in hazardous areas or with electromechanical relay (EMR) output for use in
ordinary (non-hazardous) areas.
1.3.2 FEATURES
A detailed description of available features may be found in Section V of this manual.
Highlights of specific features follow.
Keypad and Alphanumeric Display
A six character alphanumeric LED display provides the operator with large easy to read mes-
sages and prompts, eliminating complex and cryptic programming. Six individual keys are
provided to quickly access alarming and operational information.
–40°F to 140°F (–40°C to 60°C) Operation
Extended temperature operation permits installation in all but the harshest environments.
Single or Dual Temperature Sensor Inputs
The ability to utilize one or two temperature sensor (TS) inputs allows the selection of one of
eight control modes and programming of all temperature parameters.
High and Low Temperature Alarms
High and low temperature alarms are offered for both temperature sensor inputs of each control
point.
High and Low Current Alarms
The 910 offers full adjustment of both the high and low alarm points over the entire current
measurement range.
Solid State or Electromechanical Relay (EMR) Output
The 910 is available with either a solid-state relay (SSR) or an electromechanical relay (EMR)
output switch. With the SSR option, the user may select a time-proportional control algorithm,
a simple deadband control mode, or one of two ambient control algorithms. The EMR version
always uses either the deadband mode or the proportional ambient contactor mode. Switching
device failure alarms are supported for both types of output devices.
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