Emerson Rosemount Oxymitter 4000, Reference Manual, Page: 57 / 198

Table 2-8: Diagnostic LEDs
(continued)
LED Flashes Status 4-20 mA line Fault Recoverable
(2)
Calibration Recommended Track O
2
Yes
(1) Critical alarm conditions will render the O
2
measurement as unusable, and any of these events will cause the 4-20 mA
signal to go to a user-selectable limit of 3.5 mA or 21.6 mA (position 3 of SW2). Factory default value is 3.5 mA. Alarms
which are not self-clearing (Self-Clearing = NO) will require a reset. Perform the reset procedure in
Configure transmitter
with membrane keypad to continue operation.
(2) The Calibration Recommended alarm was disabled in 2014, although it remains in the menu.
The assignment of alarms that will actuate this contact is modified by one of
seven additional configuration settings (mode 1 through mode 7) listed in
Table 2-9 .
Table 2-9: Logic I/O Configuration (as Set at HART
®
/AMS or LOI)
Mode Configuration
0 The unit is not configured for any alarm condition.
1 The unit is configured for a Unit alarm.
2 The unit is configured for Low O
2
.
3 The unit is configured for both a Unit alarm and Low
O
2
.
4 The unit is configured for a High AC Impedance/
CALIBRATION RECOMMENDED.
5
(1)
The unit is configured for both a Unit alarm and a High
AC Impedance/CALIBRATION RECOMMENDED.
6 The unit is configured for both a Low O
2
and High AC
Impedance/CALIBRATION RECOMMENDED.
7 The unit is configured for a Unit alarm, a low O
2
, and a
High AC Impedance/CALIBRATION RECOMMENDED.
8
(2)
The unit is configured for a calibration handshake with
Rosemount IMPS 4000 or SPS 4001B. CALIBRATION
RECOMMENDED initiates the calibration cycle.
9 The unit is configured for a calibration handshake.
CALIBRATION RECOMMENDED will not initiate the
calibration cycle with the Rosemount IMPS 4000 or SPS
4001B.
(1) The default condition for a Rosemount Oxymitter 4000 without a Rosemount
IMPS 4000 or SPS 4001B.
(2) The default condition for a Rosemount Oxymitter 4000 with a Rosemount IMPS
4000 or SPS 4001B.
The logic contact is self powered, +5 Vdc, with a 340 ohm series resistance.
An interposing relay is required if the logic alarm will annunciate a higher
voltage device, such as a light or horn. An interposing relay may also be
required for certain DCS input cards. A Potter & Braunfield model R10s-E1Y1-
Reference Manual Install
00809-0100-4340 October 2019
Rosemount Oxymitter 4000 57