GE 469 Instruction Manual page 21

Application Example
GE Multilin
– Pickup parameter
– Operating curve, if applicable
– Time dial or multiplier
– Any additional intentional time delay
– Directionality, if applicable
• Define how many output contacts will be energized in response to a given
protection function. Note that the 469 relay can be programmed to Trip or
Alarm and, at the same time, to energize one, a combination, or all the 2
auxiliary relays during the process.
• Define if the output relays will be set as failsafe type.
• Define if the 469 relay will be used to start the motor. If so, gather information
on the required conditions to execute the command.
• Define if the 469 will be involved in the motor starting process, particularly on
reduced voltage start applications.
• Define if the 469 will be applied a multi speed applications.
• Define if the relay will be used to monitor the status of the starter or breaker. It
is strongly recommended that the 469 be always programmed to monitor the
status of the disconnecting device, by means of a dry contact connected to one
of the digital inputs of the relay. Use an auxiliary contact from the breaker or
starter either a normally open contact, 52a, which is normally in open position
when the disconnecting device is open, or a normally closed contact, 52b, which
is in close position when the breaker or starter is open.
• If the 469 will be used to respond to digital inputs, record the following
information:
– Digital Input name
– Condition by which the digital input would be considered asserted
– Function that the digital input will initiate within the 469
• If the 469 will be used to perform monitoring functions and act upon certain
conditions, record information such as:
– minimum and maximum values
– alarm and trip values
– time delays
• It is important to familiarize yourself with the relay protection and control
functions before setting up the relay.
To begin, simply power on the unit and follow the instructions in this tutorial.
Assume the following system characteristics and that the 469 setpoints are
unaltered from their factory default values.
Refer to the following figures for schematics related to this application example.
http://www.GEindustrial.com/multilin
469
Motor Management Relay
1–13