S8 Rtd T Emperature - GE Multilin 469 Instruction Manual

CHAPTER 1: GETTING STARTED
1.4.8 S7 Motor Starting
1.4.9 S8 RTD Temperature
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CURRENT UNBALANCE ALARM
ASSIGN ALARM RELAYS
CURRENT UNBALANCE ALARM PICKUP
CURRENT UNBALANCE ALARM DELAY
CURRENT UNBALANCE ALARM EVENTS
CURRENT UNBALANCE TRIP
Reset command executed
: "Trip"
ASSIGN TRIP RELAYS
CURRENT UNBALANCE TRIP PICKUP
CURRENT UNBALANCE TRIP DELAY
The S7 Motor Starting settings page contains additional settings used to complement the
Thermal Model. In our example, these characteristics are specified under Motor Protection
heading.
For the Acceleration Timer element, enter the following values in the
page. Press the
ACCELERATION TIMER
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
START INHIBIT
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 5–66 for additional
information.
There is not information available to set Starts/Hour, Time Between Starts, or the Restart
Block features. Therefore, the following settings must be disabled:
: "Off"
JOGGING BLOCK
: "Off"
RESTART BLOCK
The S8 RTD Temperature page contains the settings 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
TYPES
next message.
: "Unlatched"
: "Alarm"
: "10%"
: "10 s"
: "On"
: "Latched" – the output relay will remind energized until the
: "20%"
: "5 s"
key after each settings is completed to
MESSAGE
: "Latched"
: "13 s" – as shown in the acceleration curves at
key after each settings is completed to move
MESSAGE
key after each settings is completed to move to the
S7 MOTOR STARTING
S7 MOTOR STARTING
S8 RTD TEMPERTURE RTD
1–35