Eaton MP-3000, Instruction Leaflet

Page: 57 / 100

IM02602002E
Page 7-1
MP-3000
www.eaton.com
SECTION 7 - STaRTUP
7.0 General
This section provides procedures for applying ac power to an MP-
3000 for the first time. The procedures can be used as checklists to
reduce the chance of skipping steps.
DaNGER
ONLy QUaLIfIED PERSONNEL faMILIaR WITh ThE MP-3000,
ThE MOTOR STaRTER, aND ITS aSSOCIaTED MEChaNICaL
EQUIPMENT, ShOULD PERfORM ThESE STaRTUP PROCE -
DURES. faILURE TO COMPLy CaN RESULT IN SERIOUS OR
faTaL INjURy aND/OR EQUIPMENT DaMaGE.
CaUTION
DO NOT USE a MEGGER® OR OThER hIGh-VOLTaGE INSULa -
TION TESTER ON CIRCUITS CONNECTED TO ThE MP-3000 TER -
MINaLS. 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 back feeding con -
trol 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 devel-
oped for the application.
Make sure that the CT secondary current rating and the
MP-3000 CT input rating style agree (either 5 A or 1 A).
7.2 Initial aC Power Checks
Check Figure 6.5, MP-3000 Rear Panel Terminals, as necessary, be -
fore performing the following checks. Also, look at the URTD terminals
in Figure 6.4 and URTD Instruction Leaflet 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).
1.
2.
3.
4.
5.
1.
2.
3.
4.
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 are energized
from terminal 6 of the MP-3000 rather than a from separate
remote source.
Verify that there is 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 val -
ue. Nominal values other than 120 Vac or 240 Vac, including
values between 120 and 240 Vac, are not recommended.
However, the MP-3000 is able to handle depressions, dips,
and limited sustained variations in the normal course of ser -
vice. Refer to the Technical Specifications in Section 3.
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 240 V/120 V
step-down transformer for the URTD, able to handle a 6 VA
burden.
Turn off ac power. Troubleshoot wiring if necessary.
Once the ac supply voltage is correct, reconnect the lead
disconnected from terminal 4.
Disconnect the discrete input leads, if used, to terminals 8
and 10.
Connect voltmeters between the leads just disconnected
from terminals 8 and 10, and terminal 9, the discrete input
common.
Close or jumper the contacts that are read by the discrete
inputs, if used.
WaRNING
If ThE UNIT haS BEEN POWERED DOWN fOR MORE ThaN 20
DayS, REPROGRaM ThE Day aND TIME aND RESET ThE LOGS
aND hISTORIES.
7.3 Initial Checking with aC Power to Relay
Turn on ac power again. The MP-3000 is now energized.
Check the voltage between MP-3000 terminals 6 and 7. It
should be approximately 120 Vac, regardless of 120 V or
240 V supply.
If discrete input 1 is used, verify that 120 Vac is present
on the lead disconnected from terminal 8, measured with
respect to terminal 9.
If discrete input 2 is used, verify that 120 Vac is present
on the lead disconnected from terminal 10, measured with
respect to terminal 9.
Place the relay in Program mode. Navigate to the SP TEST
page.
Page to P13L7, the state of discrete input 1. It should report
DI 1 OFF.
Page to P13L8, the state of discrete input 2. It should report
DI 2 OFF.
Check the voltage across the power terminals of the URTD
power connector plug removed from J3. Confirm 120 Vac is
present.
5.
6.
7.
8.
9.
10.
11.
12.
1.
2.
3.
4.
5.
6.
7.
8.