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I.L. 17562
Page 81
PR 0.3 Effective 8/99
SECTION 7. STARTUP
7.0 General
– This section lists the procedure for applying ac power to an MP-3000 for the first
time. Use it as a checklist to reduce the chance of skipping an item.
DANGER
Only qualified personnel familiar with the MP-3000, the motor starter, and its associated
mechanical equipment, should perform these startup procedures. Failure to comply can result in
serious or fatal injury and/or equipment damage.
CAUTION
Do not use a Megger
or other high-voltage insulation tester on circuits connected to the MP-
3000 terminals. Failure to comply could result in equipment damage. If wiring insulation is to be
tested, do so before connecting the relay, its optional accessory modules, or other vulnerable
devices in the motor control system.
7.1 Power-off checks
–With the incoming ac power isolation switch locked off, perform these
checks:
Open the isolation switch feeding control power to the MP-3000.
Check to be sure there is no possibility of backfeeding control power through the control
transformer, which will result in voltage being present on the primary of the transformer.
Make sure that any foreign sources of power, such as those connected to the MP-3000
output relay terminals or discrete input terminals, are off.
Check the wiring for conformance to the wiring plan developed for the application.
Make sure that the ct secondary current rating and the MP-3000 ct input rating style agree
(either 5A or 1A).
7.2 Initial ac power checks
– Refer to Figure 6.8, MP-3000 Rear Panel Terminals, as
necessary. Also, see URTD terminals in Figure 6.6, and URTD I.L. 17367.
With the power still off, disconnect the ac control power lead to terminal 4 (120 or 240 Vac
power input to relay).
Disconnect and insulate the contactor lead from the trip relay terminal 12, to prevent
contactor energization during most of this testing.
If the optional URTD is used, disconnect the 120 Vac power connector J3 from the URTD
module.
Connect an ac voltmeter between the wire just disconnected from terminal 4, and terminal 7
(neutral of power input to relay).
Turn ac power on to the MP-3000, and to the separate remote contact-wetting source if one
is used. Usually, the contacts to be read by the discrete inputs will be energized from
terminal 6 of the MP-3000 rather than a separate remote source.
Verify that either 120 Vac or 240 Vac on the lead disconnected from terminal 4. The MP-
3000 automatically configures its power supply to work with one or the other value. Nominal
values other than 120 Vac or 240 Vac, including values in between 120 and 240, are not
recommended. However, the MP-3000 is well able to handle depressions, dips, and limited
sustained variations in the normal course of service. See Specifications.
If the optional URTD module is to be powered from terminals 4 and 7 of the MP-3000, the
supply must be 120 Vac only. The URTD is rated only for 120 Vac, and cannot operate from
240 Vac. If necessary, use an auxiliary 240V/120V step-down transformer for the URTD,
able to handle 6VA burden.
Turn off ac power. Troubleshoot wiring if necessary.
Once ac supply voltage is correct, reconnect the lead disconnected from terminal 4.
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...