Led Indicators; Operational Basics - nvent 910 Series Installation, Operating And Maintenance Instructions

3.3 LED INDICATORS

3.4 OPERATIONAL BASICS

The console includes eight LED indicators:
Four LEDs indicate the console operating mode (SHIFTed function, ALARM, MONITOR, or
CONFIGure modes).
There are two status LEDs which indicate the alarm and control output status of the controller:
1. The output LED, when illuminated steadily, indicates that the output of the controller
is turned on and is allowing current to flow into the loadtrace circuit. For SSR versions
programmed for proportional modes, a flashing LED indicates that the controller is pulsing
its output on and off to maintain the setpoint temperature and/or control the average
amount of current/power the tracer uses.
2. The alarm LED will flash (approximately once per second) when the controller has detected
an alarm condition.
The two additional LEDs are used to indicate external communications activity and are only
used when an optional communications interface is installed. The "Rx" LED flashes to show
that the Controller is receiving information via its communications port. The "Tx" LED flashes
when the Controller is transmitting information via its communications port.
3.4.1 OPERATING MODES
The console operates in one of four modes and is related to the basic function the operator
selects.
Mode Function
Scan This is the default mode. In this mode, the console sequentially displays
load current, temperature, and setpoint readings.
Alarm Invoked when you press the SHIFT key followed by the ALARM key. This
mode allows you to examine or reset any alarms that may exist. The
LED above the ALARM key is illuminated while in this mode.
Monitor Invoked when you press the SHIFT key followed by MONITOR key. In
this mode, you may examine any of the controller readings such as
temperature, load current, etc.
The LED above the MONITOR key is illuminated while in this mode.
Configure Invoked when you press the SHIFT key followed by CONFIG key.
In this mode, you may examine or alter the controller configuration.
The LED above the CONFIG key is illuminated while in this mode
3.4.2 MENUS
Each of the operating modes has a list of data items associated with it. For example, in the
Monitor mode you may view temperatures, load current, resistance, ground fault current,
voltage, or power information. This collection of data items is referred to as a menu.
Only one menu item may be viewed at a time. The ▿ ( ▵ ) keys move to the next (previous)
item in the menu. When you reach the end of the menu (indicated by ---- END ---), ▿ wraps you
to the first item in the menu; conversely, ▵ wraps you to the last item in the menu.
Some of the items within a menu are actually entry points to sub-menus—these entries are
indicated with "..." at the end of the message. To enter a sub-menu, press the ▹ key. To move
around in the menu, use the ▿ and ▵ keys move to the next and previous items respectively.
The ◃ key exits the current menu and returns to the previous menu.
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