Tyco DigiTrace 920 Series User Manual

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• Monitor PEAK LOAD CURRENT, PEAK GFI, and the EXTERNAL INPUT STATUS through communi-
cations (see sections 4.3.6 on page 50, 4.3.7 on page 50, and 4.3.8 on page 50).
New Operator Console Features
• The ability to adjust the display scroll rate is now available (see section 3.6.10 on page 31).
• Maintenance data resetting is now supported (see section 4.3 on page 49).
• Display and reset the CONTACTOR CYCLE COUNTER (see section 4.3.3 on page 49).
• Limit the range of the CONTROL SETPOINT setting for 920 Operator Console users
(see sections 3.5.29 on page 29 and 3.5.30 on page 29).
•An
UNLOCK DATABASE feature was added to the 920 Operator Console’s “Configuration Mode
Main Menu” (see section 3.10.3 on page 46).
• The display test no longer occurs at startup; instead, the user may activate it from a menu
option (see section 3.10.5 on page 46).
Section 1 Overview
1.1 Controllers Covered by this Manual
This document covers the 920 Series of heat trace controllers and available options. The infor-
mation coincides with the specific releases of firmware for the 920 product which are listed on
the cover. As Tyco Thermal Controls 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 920 against the version number listed on the front of this manual. This
can be displayed using the optional 920 Operator Console or a communicating device. As subse-
quent changes are made, supplements to this document will be included in manuals shipped
after the firmware is released. Supplements will make specific reference to the operational or
functional changes.
1.2 Product Overview
1.2.1 DESCRIPTION
The 920 Series Heat-Tracing Controller controls, monitors, and communicates alarms and data
for one or two heating circuits. As a dual-point device, it offers a complete range of control and
monitoring features, as well as superior reliability compared to multipoint systems. Its modular,
scalable architecture yields cost-effective multipoint assemblies without the expense of addi-
tional control points that are not required. Available for use with external solid-state relays
(SSRs) or contactors in either one-, two-, or three-pole configurations and the ability to switch
loads up to 600 Vac makes the 920 the most versatile product on the market.
1.2.2 FEATURES
A detailed description of available features can be found in Section III of this manual. Highlights
of specific features are included in the following text.
Front Display
The control module includes
LED status indicators to show output and alarm conditions. Using
the optional 920 Operator Console, the setpoint temperature, actual control temperature, and
load current are immediately accessible to plant operators and maintenance staff. The display
units are field selectable for °F or °C.

Tyco DigiTrace 920 Series Specifications

General

Brand	Tyco
Model	DigiTrace 920 Series
Category	Controller
Language	English