nVent RAYCHEM Elexant 4010i/4020i User Manual
RAYCHEM-AR-H60624-40X0iOpsManual-EN-1905
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3.4
DEVICE INFORMATION
3.4.1 Information
The following important identifying information is available:
•
Device Tag – 40 character user configurable alphanumeric string to identify the individual controller.
See Section 5.6.7.1 for further information.
•
Model – The manufactured configuration of the control module (see Section 1.1.1.2 - Product
Configurations for model identification information).
•
Serial Number – uniquely identifies a device from manufacture through operation.
•
Manufacture Date – useful in determining maintenance needs.
•
Firmware Version – the current firmware version.
•
Limiter Version – the firmware version on the limiter (if applicable).
3.5
Alarms
The Elexant 4010i/4020i alerts the user to any occurrence that falls outside the defined limits of normal
function. Alarms are enunciated using the GUI (see Alarm indications table, Section 3.5.3) and with a dry
contact relay (See Section 3.5.1). Active alarms are also reported over the communication interfaces.
See Section 3.3 for different communication protocols supported.
Active alarms can be cleared via the GUI (see Section 5.9).
3.5.1
Alarm Relay Modes
The alarm relay is a Form C dry contact relay that indicates the presence or absence of alarms. The relay
is configured as fail-safe and will create an alarm condition if the controller loses power. It supports
connections for remote annunciation or local indication equipment (lights, horns, etc.).
The alarm relay offers three modes of operation to support a range of attached equipment.
Normal:
In the event of an alarm, the relay de-energizes. It stays in the de-energized state until all alarms
are cleared. When no alarms are present, the alarm relay is energized.
Flash:
An alarm causes the relay to energize and de-energize each second. When there are no alarms
present, the alarm relay is held in the energized state.
Toggle:
If an alarm is present, the alarm relay is held in a de-energized state. If a new alarm event
happens, the alarm relay is energized for a short period, and de-energized again. The alarm relay returns
to an energized state when no alarms remain.
3.5.2
Alarm Functionality
Alarms have a basic set of configuration options in common, although not all alarms allow all
configuration options.
The basic settings of an alarm are as follows:
Enable
: The enable option sets whether a condition or event generates an alarm. The setup of the heat
trace system determines which alarms should be enabled or disabled. Other alarm settings do not apply
when an alarm is disabled.
Latch:
For alarm conditions that are intermittent, latching keeps an alarm active even after the root
cause is no longer present. If an alarm is latched, it must be manually cleared after the root cause for the
alarm is no longer present.
Setpoint:
Some alarms are triggered by an event, while others occur when a value crosses a threshold.
The Setpoint sets the threshold at which the parameter triggers the alarm.
Filter:
For some parameters, an alarm condition is only important if it is present for more than a defined
period of time. The filter setting sets the time a condition must be present before it causes an alarm.
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