Mpc2000D Fault Finding - P&B MPC2000D Manual

This allows the user to reset all statistical data and store at the reset value. Care must also be taken when using this
option, as all previous statistical data will be lost when reset. Pressing of the DATA PAGE and RESET keys
simultaneously will affect this procedure.

14. MPC2000D Fault Finding

This procedure details some of the more common faults which may cause the MPC2000D to not operate as required.
This is usually due to incorrect settings or logic and will hopefully assist to rectify the situation.
•Check all connections at the rear of the unit have been made correctly, especially:-
Interlock
Isolator
Authorise Key
Emergency Stop (if enabled)
Ensure that the RTD inputs have been earthed. These are terminals 11, 12 and 54.(See Section 4.)
•Switch on the MPC2000D and ensure that the 'Power On' LED is illuminated. If not check customer system.
•Select the 'Logical Inputs' menu using the 'Data Page' key.
•Check that the logical status of the MPC2000D is that required for operation and start the unit.
•If the unit will not start; message 'Unable to Start, Check System' appears; check firstly the Logic Status Menu for
drive availability, if not available:-
1).Check 'Local' position if starting from local.
2).Check 'Interlock' is closed.
3).Check 'Isolator' is closed.
4).Check 'Stop Button' is in correct position.
5).Check that 'Protection Only Mode' is correctly selected.
6). If in 'Remote', check correct selection of data transfer, i.e. PLC or Serial Port.
•If the unit starts but alarms immediately, check the following:-
1).Ensure 'System Parameter Settings' are correct.
2).Ensure 'Tripping/Alarm Options' are correct.
3).Ensure correct temperature measurement device has been selected, i.e. Thermistor or RTD.
NOTE: When selecting RTD PT100 the 100 Ohm resistance refers to the resistance at zero temperature. Ensure the
normal working temperature figure is added to this value. Usual setting approximately 140 Ohm.
5).If selecting Thermistor, ensure correct type, i.e. +ve
6).Check that the unit passes the 'Self Test Program'. (See instruction manual to operate).
•When using the Goldstart MPC2000D with a single phase input; special care needs to be given to the System
Parameter Settings to obtain correct results.
In particular the Line Voltage parameter should be set at 1.732 times the expected line voltage, e.g.
11KV system; set line voltage at 11Kv x 1.732 = 19KV
The VT Primary and VT Secondary values are set normally, i.e.
VT Primary = 11KV
For Low Voltage systems, using for example a 240V phase to neutral input, the line voltage should be set to 415V.
If the unit still will not operate or still keeps alarming and has passed its self test, then seek further assistance
from our application help desks on Manchester 0161-230-6363.
MPC2000D
VT Secondary = 110V
Issue 2 22/4/98
or -ve.
Page 33