GE 269Plus

3- 28 269Plus Motor Management Relay GE Power Management
SETPOINTS MODE 3 SETUP AND USE
3
56
This setpoint enables or defeats the stator RTD voting feature. If enabled, any one Stator
RTD alone will not trip the motor even when it exceeds its trip setpoint. A minimum of two
stator RTDs must exceed their individual trip setpoints before a trip signal is issued. The
second stator RTD above its trip setpoint causes the trip. In addition, a reset of a stator RTD
trip will not be allowed unless both stator RTD temperatures are below their respective
setpoints. Stator RTD Alarms are not affected by this feature. Stator RTD Alarms will still be
issued based on individual RTD temperatures. This message is not displayed if the ARE
THERE ANY RTD CONNECTED? setpoint (page 2, line 3) is set to NO .
If the number of stator RTDs is programmed to 1, then no stator RTD voting takes place.
Range: YES (RTD Voting enabled); NO (RTD Voting disabled)
Factory Value = YES
57
This setpoint enables or defeats the thermal memory RTD bias feature (see Section 3.22:
THERMAL MEMORY on page 3–59). With this feature defeated, the effect of the stator RTD
temperature is not included in the thermal memory. This message is not displayed if the ARE
THERE ANY RTD CONNECTED? setpoint (page 2, line 3) is set to NO .
Range: YES (defeated), NO (enabled)
Factory Value = YES
58
Not displayed when RTD INPUT TO THERMAL MEMORY (Setpoints page 5, line 7) is defeated –
see Section 3.18.
This setpoint sets the RTD bias minimum value (see Figure 3–4: STANDARD OVERLOAD
CURVES WITH OVERLOAD PICKUP on page 3–55); this setpoint is typically programmed
as the ambient temperature.
Range: 0°C to (RTD Bias Center Temp – 1) in °C or °F
Factory Value = 40°C
59
Not seen when RTD INPUT TO THERMAL MEMORY (Setpoints page 5, line 7) is defeated.
This is the thermal capacity value for the center point of the two part curve. This level may be
set as the percentage difference of the hot motor thermal damage curve to the cold motor
thermal damage curve.
Range: 1 to 99% in steps of 1%
Factory Value = 15
TABLE 3–3: 269PLUS SETPOINTS (SHEET 11 OF 25)
PAGE LINE INFORMATION LINE
ENABLE STATOR RTD VOTING
(2 RTDs>=TRIP)? XXX
DEFEAT RTD INPUT TO
THERMAL MEMORY ? XXX
RTD BIAS CURVE MINIMUM
VALUE = XXX C
RTD BIAS CENTER T.C.
VALUE = XX PERCENT
Center T.C. 1
Hot Motor Stall Time
Cold Motor Stall Time
---------------------------------------------------------– 100%×=