IM_ONE_Safety-07
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3
I Am Working (IAW™)
The One Series
Field Safety System™
also contains UE’s patented IAW™ self-diagnostic software. On a continuous basis, the IAW™ algorithm
checks for proper operation, and locally reports the status using messages or revolving arrows on the display. For remote reporting, a discrete
IAW™ output signal can be monitored by logic solver and used to detect normal, tripped, and fault conditions. A discrete outputs truth table is
provided on page 18. IAW™ self-monitors, searching for possible faults, both within the instrument and in the overall system (a list of the various
fault codes is outlined in table 5, page 17). I
n the event of a fault condition, the One Series
Field Safety System™
will attempt to display the problem and
provide remote indication signals using the IAW Status and NAMUR NE43 standard 4-20 mA outputs. In the case of certain micro-controller faults, the revolving
arrows may freeze or go out, indicating that a failure exists. If loop power is interrupted to the One Series
Field Safety System™
, the display will go blank
and all discrete outputs will open.
DISPLAY FEATURES AND DIAGNOSTICS
The One Series
Field Safety System™
features a large, easy to read LCD display (See Figure 1). It is used for three main purposes: process
indication, programming and switch status/troubleshooting.
In the Process Display mode, the display may be indicating the following:
• Current process value and units of measure: A value will be displayed as long as the reading is within 103% of the full
scale range noted on the nameplate. For valves beyond 103% of range, the PV is replaced with a scrolling message OVER RANGE.
• I Am Working (IAW
™
) status: When the unit is working properly, a circular 4-segment arrow will be revolving around the letters “IAW™” in
the top center of the display.
• Offset/Span Adjustment: The word “offset” will appear above the process value, indicating that the factory offset and/or span
calibration has been modified by the user.
In addition, the user can easily access information such as the set point, deadband and minimum/maximum process readings:
By pushing the right
g
button once, the display will scroll as follows:
SP1 XX.XX DB1 XX.XX SP2 XX.XX DB2 XX.XX
By pushing the left
2
button once, the display will scroll the min/max process values recorded in memory:
MAX XX.XX MIN XX.XX
The display will automatically revert back to the Process Display mode after scrolling
.
ALARM CONDITION
When the process goes beyond the set point, the display will begin to flash, alternating between the process value and “SW1”. This indicates that
set point has been reached, causing the Safety Relay Output (SRO) and Status Switches to open. The display will continue to flash until the process
has returned to a value beyond the deadband, at which point the display will revert to normal operation and process value display. If the unit was
programmed to have a latching output, a small “Latch” icon will light in the display when the set point is reached, indicating that the output is
latched and needs to be manually reset.
FAULT CONDITIONS
In the case of a fault condition, the display may indicate the following:
• If the IAW software detects a fault it will display an error code and force the SRO, SRO Status and IAW Outputs to open state and the 4-20 mA output to the
fault current.
• If the power supply or the wiring fails, the display will go blank. All switch outputs will open (fail safe open) and the 4-20 mA signal will go to zero.
(See the Fault Codes and the Discrete Output Truth Table on pages 17 and 18 for a complete description of fault diagnostics and the response by the One Series
Safety Transmitter.)
Please refer to the product technical brochure for product specifications. Product technical brochure may be found at www.ueonline.com.
UE declarations and third party issued certifications are available for download at www.ueonline.com/support/certifications/.
Date code format on nameplate is “YYWW” for year and week (see Figure 19, Page 18)
PART I - MOUNTING
Tools Required:
Screwdriver for mounting bolts; 4 mounting bolts (1/4” Max.)
NOTE
: For optional surface and pipe mounting kit, order part no. 6361-704. See page 20
.
BEFORE INSTALLING, CHECK THE SENSOR MODEL SELECTED FOR COMPATIBILITY TO THE PROCESS MEDIA IN CONTACT WITH THE SENSOR
AND WETTED PARTS.
IN ALL APPLICATIONS, SECURE THE ENCLOSURE AS DETAILED BELOW. DO NOT MOUNT VIA THE PROCESS CONNECTION ONLY.
Figure 1
