Configuring Alarms And Assigning Setpoints; Purpose; Definitions - Emerson Rosemount MCL-220 Manual

Programming the transmitter
7.
6.4

Configuring alarms and assigning setpoints

6.4.1

Purpose

The Rosemount MCL-220 transmitter has an optional alarm relay board. This section
describes how to configure and assign setpoints to the alarm relays, simulate alarm action,
and synchronize interval timers.
Important
Configure the alarms first.
1.
2.
6.4.2

Definitions

Assigning
alarms
Fault alarm
Alarm logic,
setpoints, and
deadbands
34
To end the simulated current, press MENU or EXIT.
Configuring an alarm means
a. Assigning a sensor and measurement (monochloramine or temperature) to an
alarm. An alarm relay can also be used as a timer.
b. Selecting high or low logic.
c. Choosing the deadband.
d. Setting the interval timer parameters.
Simulating an alarm means making the transmitter energize or de-energize an alarm
relay.
There are four alarm relays. The relays are freely assignable to either
monochloramine or temperature. Alarm relays can also be assigned to
operate as interval timers or as fault alarms. A fault alarm activates
when the transmitter detects a fault in either itself of the sensor.
A fault condition exists when the transmitter detects a problem with
the sensor or with the transmitter itself that is likely to cause seriously
erroneous readings. If an alarm was programmed as a fault alarm, the
alarm activates. At the same time, a fault message appears in the main
display.
See Figure 6-1 and Figure 6-2.
Rosemount MCL