I.L. 17562
Page 47
PR 0.3 Effective 8/99
Most of the following setpoints can be viewed by users without access to the
Program
button
behind the front-panel security door. Use the
View Settings
display mode button.
Note that certain setpoints without logical display values are not visible in the View Setpoints
mode. These are on setpoint pages 12, 13, and 14, and are indicated by dashes in the Factory
Default column of Table 4.3. They include testing setpoints and time values. Check the setting
of the calendar/clock using the
Monitor Time
page of the
Monitor Mode.
5.1 Page 1, SP MOTOR, Setpoints P1L1 to P1L8 —
Setpoints for motor constants. These
settings are usually obtained from the motor nameplate or manufacturer-supplied data. They
must be correct for the MP-3000 to protect the motor.
5.1.1 Setpoint P1L1, Full-Load Amperes (FLA) —
Set to maximum stator continuous rms
current in primary (actual motor winding) amperes in each phase. Use motor nameplate or
manufacturer’s data.
NOTE
Do not vary the
FLA
setting from motor nameplate value
even if the motor has a service
factor different from 1.0.
See
UTC
, P1L4 below for consideration of service factor.
CAUTION
Many of the protection functions of the MP-3000, including the motor thermal protection
algorithm, use the FLA setpoint value to calculate trip points. If the user enters an incorrect
setpoint, many protection functions may not operate as designed and the motor may be
damaged.
5.1.2 Setpoint P1L2, Locked-Rotor Current (LRC) —
Set to the locked-rotor current (the
current the motor draws when stalled), in percent of
FLA
(see P1L1). Use motor nameplate or
manufacturer’s data.
5.1.3 Setpoint P1L3, Maximum Allowable Stall or Locked-Rotor Time (LRT) —
Specifies
how long a locked-rotor or stall condition can be maintained before the motor is damaged, in
seconds, for a cold start. Use motor nameplate or manufacturer’s data.
LRC
and
LRT
combine to specify a point on the motor damage curve (Figure 9.4) which, when
reached during a start, causes a locked-rotor trip. Refer to subsection 9.1.3 for a detailed
explanation.
CAUTION
Incorrect setpoint values for these functions can result in excessive rotor temperatures and
motor damage.
5.1.4 Setpoint P1L4, Ultimate Trip Current (UTC) —
Sets the current level above which a trip
will eventually occur when no RTD stator temperature data is available, in percent of FLA. This
value represents the limit line on the running (upper) portion of the non-RTD motor damage
curve of Figure 9.4.
Summary of Contents for 66D2032G01
Page 18: ...Page 18 I L 17562 PR 0 3 Effective 8 99 Figure 4 1 MP 3000 Pushbuttons...
Page 19: ...I L 17562 Page 19 PR 0 3 Effective 8 99 Figure 4 2 MP 3000 LED Indicators...
Page 72: ...Page 72 I L 17562 PR 0 3 Effective 8 99 Figure 6 1 Panel Cutout Dimensions...
Page 73: ...I L 17562 Page 73 PR 0 3 Effective 8 99 Figure 6 2 Faceplate Dimensions...
Page 74: ...Page 74 I L 17562 PR 0 3 Effective 8 99 Figure 6 3 MP 3000 Case Depth Dimensions...
Page 75: ...I L 17562 Page 75 PR 0 3 Effective 8 99 Figure 6 4 Universal RTD Module Mounting Dimensions...
Page 76: ...Page 76 I L 17562 PR 0 3 Effective 8 99 Figure 6 5 Rear Panel Terminals...
Page 78: ...Page 78 I L 17562 PR 0 3 Effective 8 99 Figure 6 7 Typical ac Supply and URTD Wiring...
Page 79: ...I L 17562 Page 79 PR 0 3 Effective 8 99 Figure 6 8 Alternatives for Discrete Input Wiring...
Page 80: ...Page 80 I L 17562 PR 0 3 Effective 8 99 Figure 6 9 RTD Wiring to URTD Module...
Page 100: ...Page 100 I L 17562 PR 0 3 Effective 8 99 Figure 9 1 Rotor Temperature Tracking...
Page 101: ...I L 17562 Page 101 PR 0 3 Effective 8 99 Figure 9 2 Motor Protection Curve...
Page 102: ...Page 102 I L 17562 PR 0 3 Effective 8 99 Figure 9 3 Underload Jam Protection Curve...
Page 104: ...Page 104 I L 17562 PR 0 3 Effective 8 99 Figure 9 5 Motor Protection Curve Example with RTDs...
Page 105: ...I L 17562 Page 105 PR 0 3 Effective 8 99 Figure 9 6 Motor Start and Run Cycles...
Page 109: ...I L 17562 Page 109 PR 0 3 Effective 8 99 P5L8 40 Incomplete Sequence time 1 60s OFF 1 240s...