Other Settings; S8 Rtd Temperature - GE 469 Instruction Manual

Application Example

S8 RTD Temperature

Other Settings

GE Multilin
For the Acceleration Timer element, enter the following values in the
STARTING ACCELERATION TIMER
completed to move to the next message.
ACCELERATION TIMER TRIP
: "Trip"
ASSIGN TRIP RELAYS
ACCELERATION TIMER FROM START
100% voltage
For the Start Inhibit element, enter the following values in the
page. Press the MESSAGE
START INHIBIT
move to the next message.
: "On"
START INHIBIT BLOCK
: "25%"
TC USED MARGIN
With these settings, the 469 relay prevents motor starting if there is insufficient
thermal capacity for a successful motor start. Refer to Start Inhibit on page 5–55 for
additional information.
There is not information available to set Starts/Hour, Time Between Starts, or the
Restart Block features. Therefore, the following setpoints must be disabled:
: "Off"
JOGGING BLOCK
: "Off"
RESTART BLOCK
The S8 RTD Temperature page contains the setpoints for the twelve (12) field
programmable RTDs that are normally used for temperature monitoring. The
temperature measured by each RTD can be compared to pickup values, and set to
energize Trip or Alarm outputs.
For proper temperature monitoring, enter the RTD types in the
page. Press the MESSAGE
RTD TYPES
to the next message.
: "100 Ohm Platinum"
STATOR RTD TYPE
: "100 Ohm Platinum"
BEARING RTD TYPE
: "100 Ohm Platinum"
AMBIENT RTD TYPE
: "100 Ohm Platinum" – default value
OTHER RTD TYPE
As per the information provided above, there will be six RTDs, two per phase located
in the Stator, and two Bearing RTDs, one to monitor the ambient temperature.
For Stator Overtemperature protection, enter the following setpoints in the
to
TEMPERTURE RTD 1 RTD6
: "Stator"
RTD #1 APPLICATION
: "ST Ph A1"
RTD #1 NAME
: "Unlatched"
RTD #1 ALARM
: "Alarm"
ASSIGN ALARM RELAYS
RTD #1 ALARM TEMPERATURE
: "Off"
RTD #1 HIGH ALARM
: "Alarm" - default value
HIGH ALARM RELAYS
RTD #1 HIGH ALARM TEMPERATURE
: "On"
RTD #1 ALARM EVENTS
: "Latched"
RTD #1 TRIP
: "RTD #5"
RTD #1 TRIP VOTING
: "Trip"
ASSIGN TRIP RELAYS
RTD #1 TRIP TEMPERATURE
The settings for the other RTDs are entered in similar fashion. Refer to S8 RTD
Temperature on page 5–57 for additional settings and additional information on RTD
monitoring.
a) Undervoltage Protection
In addition to the settings illustrated above, there will be cases in motor applications
where additional settings will be required, to monitor other system parameters such
as voltage levels.
http://www.GEindustrial.com/multilin
page. Press the MESSAGE
: "Latched"
: "13 s" – as shown in the acceleration curves at
key after each setpoint is completed to
key after each setpoint is completed to move
menus:
: "135°C"
: "135°C" - default value
: "155°C"
469
Motor Management Relay
S7 MOTOR
key after each setpoint is
S7 MOTOR STARTING
S8 RTD TEMPERTURE
S8 RTD
1–27