Table of Contents
Advertisement
5–94
MESSAGE
MESSAGE
MESSAGE
There are 4 analog inputs, 4 to 20 mA, 0 to 20 mA, or 0 to 1 mA as selected. These inputs
may be used to monitor transducers such as vibration monitors, tachometers, pressure
transducers, etc. These inputs may be used for alarm and tripping purposes. The inputs are
sampled every 50 ms. The level of the analog input is also available over the
communications port.
Before the input may be used, it must be configured. A name may be assigned for the
input, units may be assigned, and a minimum and maximum value may be assigned. Also,
the trip and alarm features may be blocked from start for a specified time delay. If the
block time is 0, there is no block and the trip and alarm features will be active when the
motor is stopped or running. If a time is programmed other than 0, the feature will be
disabled when the motor is stopped and also from the time a start is detected until the
time entered expires. Once the input is setup, both the trip and alarm features may be
configured. In addition to programming a level and time delay, the pickup settings may be
used to dictate whether the feature picks up when the measured value is over or under the
level.
For example, if a pressure transducer is to be used for a pump application, program the
following settings:
ANALOG INPUT 1(4) NAME:
ANALOG INPUT 1(4) UNITS:
ANALOG INPUT 1(4) MINIMUM:
ANALOG INPUT 1(4) MAXIMUM:
If there is no pressure until the pump is up and running for 5 minutes and pressure builds
up, program the
ANALOG INPUT 1 BLOCK FROM START
be fed back to a PLC for when pressure is under 300 PSI. Program a reasonable delay (e.g
ANALOG INPUT ALARM 1 DELAY
If a vibration transducer is to be used for a pump application, program the following
settings:
ANALOG INPUT 1(4) NAME:
ANALOG INPUT 1(4) UNITS:
ANALOG INPUT 1(4) MINIMUM:
ANALOG INPUT 1(4) MAXIMUM:
Program
BLOCK ANALOG INPUT 1(4) FROM START
reasonable level slightly higher than the normal vibration level. Program a delay of "3 s"
and a pickup value of "Over".
ANALOG INPUT 1
TRIP
ANALOG INPUT 1
TRIP
ANALOG INPUT 1
TRIP
"Pressure"
"PSI"
"0"
"500"
as 6 minutes ("360 s"). The alarm may
= "3 s") and
ANALOG INPUT ALARM 1 PICKUP
"Vibration"
"mm/s"
"0"
"25"
as "0" minutes. Set the alarm for a
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
Range: –50000 to 50000 in steps of 1
Units reflect
ANALOG INPUT 1
above
UNITS
Range: Over, Under
Range: 0.1 to 300.0 s in steps of 0.1
as "Under".
Advertisement
Table of Contents
