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Page 46
I.L. 17562
PR 0.3 Effective 8/99
SECTION 5. PROGRAMMING THE MP-3000
5.0 General
The Program mode is used to change MP-3000 setpoints.
The user should read this section and also
Section 9. Application and Settings
, for a full
understanding of the setpoints and the relay functions they control. This Section summarizes the
functions of all of the setpoints. Section 9 provides more detailed engineering explanation for
selected settings that require it.
Open the security door and press the
Prog
button to put the relay into Program mode (Figure
4.1). Use Table 4.3 as a guide and as a worksheet for programming. Use the Page and Line
pushbuttons to navigate through the Program mode, and the Value pushbuttons to change the
setpoint values.
A relay protecting a running motor can be reprogrammed only if the setting number 6 (RUN PGM
or STOP PGM) on the SP SYSTEM Page (Page 12 of the setpoints) was previously set to RUN
PGM. See Section 5.12.6 below.
The relay continues to protect the motor with its prior settings as you manipulate the values in
Program mode. Changes to the setpoints will not take effect until the program button is pressed
a second time to exit the Program mode.
Make sure the motor is in a stable state before programming. If the operating state of the motor
changes during a programming operation, the MP-3000 exits the program mode without actually
making any of the changes entered to that time. State changes include any transition to start,
run, stop, alarm, or trip.
In the following, the notation
PnLm
designates the setpoint on page n, line m.
5.0.1 Conditional Setting Ranges
Program settings have individual ranges and setting increments, or selections, listed in Table
4.3. However, note that four of the settings have linked ranges. Because of this, it may be
possible to set unacceptable combinations of values during the programming operation. If this
error is made, the user will not be able to exit the programming mode by pushing
Prog
. Instead,
the display indicates which setting is out of range and the Help message indicates the fix. Also,
see individual descriptions for each of these linked settings:
•
The ratio of Motor Full Load Amperes nameplate value (
FLA
; P1L1) to Phase Ct-ratio
numerator (
PCT
, P1L5) must be between 0.5 and 1.5. These values are both dictated by the
design of the protected equipment, and the error can be corrected only by installing an
appropriate current transformer set for this motor. See Section 5.1.5 below for guidance on
Ct ratio selection.
•
The instantaneous overcurrent trip setting (
IOC
, P3L4) must be below (1020 *
PCT
/
FLA
) or
1600%, whichever is less.
•
The jam trip and alarm current levels (
JMT
, P3L6 and JMA, P4L3) must be below (1020 *
PCT
/
FLA
) or 1200%, whichever is less.
5.0.2 Viewing Setpoints
Содержание 66D2032G01
Страница 18: ...Page 18 I L 17562 PR 0 3 Effective 8 99 Figure 4 1 MP 3000 Pushbuttons...
Страница 19: ...I L 17562 Page 19 PR 0 3 Effective 8 99 Figure 4 2 MP 3000 LED Indicators...
Страница 72: ...Page 72 I L 17562 PR 0 3 Effective 8 99 Figure 6 1 Panel Cutout Dimensions...
Страница 73: ...I L 17562 Page 73 PR 0 3 Effective 8 99 Figure 6 2 Faceplate Dimensions...
Страница 74: ...Page 74 I L 17562 PR 0 3 Effective 8 99 Figure 6 3 MP 3000 Case Depth Dimensions...
Страница 75: ...I L 17562 Page 75 PR 0 3 Effective 8 99 Figure 6 4 Universal RTD Module Mounting Dimensions...
Страница 76: ...Page 76 I L 17562 PR 0 3 Effective 8 99 Figure 6 5 Rear Panel Terminals...
Страница 77: ...I L 17562 Page 77 PR 0 3 Effective 8 99 Figure 6 6 Typical Ct Circuits and Motor Control Wiring...
Страница 78: ...Page 78 I L 17562 PR 0 3 Effective 8 99 Figure 6 7 Typical ac Supply and URTD Wiring...
Страница 79: ...I L 17562 Page 79 PR 0 3 Effective 8 99 Figure 6 8 Alternatives for Discrete Input Wiring...
Страница 80: ...Page 80 I L 17562 PR 0 3 Effective 8 99 Figure 6 9 RTD Wiring to URTD Module...
Страница 88: ...Page 88 I L 17562 PR 0 3 Effective 8 99 Figure 8 1 System Overview Figure 8 2 Torques from Sequence Currents...
Страница 100: ...Page 100 I L 17562 PR 0 3 Effective 8 99 Figure 9 1 Rotor Temperature Tracking...
Страница 101: ...I L 17562 Page 101 PR 0 3 Effective 8 99 Figure 9 2 Motor Protection Curve...
Страница 102: ...Page 102 I L 17562 PR 0 3 Effective 8 99 Figure 9 3 Underload Jam Protection Curve...
Страница 103: ...I L 17562 Page 103 PR 0 3 Effective 8 99 Figure 9 4 Motor Protection Curve Example without RTDs...
Страница 104: ...Page 104 I L 17562 PR 0 3 Effective 8 99 Figure 9 5 Motor Protection Curve Example with RTDs...
Страница 105: ...I L 17562 Page 105 PR 0 3 Effective 8 99 Figure 9 6 Motor Start and Run Cycles...
Страница 109: ...I L 17562 Page 109 PR 0 3 Effective 8 99 P5L8 40 Incomplete Sequence time 1 60s OFF 1 240s...