I.L. 17562
Page 65
PR 0.3 Effective 8/99
thermal bucket without suffering the consequence of an undesired trip. Once the user confirms
that the setpoints are suitable, set the MP-3000 to ARMED and true protection is enabled.
NOTE
The ALARM, AUX1, and AUX2 output contacts all function normally even when the MP-3000 is
DISARMED.
NOTE
To get the full use of the DISARMED/ARMED capability of the MP-3000, be sure to set P12L6 to
RUN PGM (allow MP-3000 to be programmed while the motor runs), so that the relay can be
armed without stopping the motor.
CAUTION
When DISARMED for maintenance reasons, the MP-3000 is not protecting the motor. After
proper operation is confirmed, be sure to set to ARMED. Be watchful at all times for the
DISARMED message on the display.
5.13 Page 13, SP TEST, Setpoints P13L1 to P13L8 — This page is used to test the MP-3000.
5.13.1 Setpoint P13L1, Operating Mode (3 PHASE or 1 PHASE) — This function allows the
MP-3000 to be bench-tested using a single-phase current source (1 PHASE) if a three-phase
source is unavailable at the test bench. The phase unbalance functions cannot be tested in 1
PHASE mode, but unbalance functions are not necessary just to determine if a particular MP-
3000 sample is functioning correctly. For three-phase testing and all normal operation, select
the three-phase mode (3 PHASE).
CAUTION
In service, the MP-3000 displays READY--3 when ready to start in 3 PHASE mode. If it displays
READY--1, the user is warned that the relay is in the 1 PHASE test mode, which is not suitable
for protection of a real three-phase motor.
5.13.2 Setpoint P13L2, Trip Relay Test (TRP ENER or TRP DENR) — Lets the user directly
energize or de-energize the trip relay for testing purposes. To use this function:
• Stop the motor first. The test is blocked if the motor is running.
• Determine whether the MP-3000 trip relay is configured for MODE 1 or MODE 2 operation -
see SYSTEM Page Setpoint P12L1.
• If MODE1, the trip relay is normally de-energized. Set up for the test by selecting TRP
ENER here.
• If MODE 2, the trip relay is normally energized. Set up for the test by selecting TRP DENR
here.
• Push the Reset button to test the relay. The Trip LED also lights. Release the button to
revert to the prior output state.
To Next Page
Loading...
