P&B MPC2000+ Technical Manual page 18

MPC2000+ Technical Manual
Note: It is possible to adjust and store setting parameters at any time , even whilst the motor is running. Changing the
value of a displayed parameter has no effect on the operation of the units until the STORE key is pressed.
After setting parameters have been stored to the EEPROM memory they are kept indefinitely, this feature does not
rely on a battery backup system.
TEST
The pressing of this key will cause the unit to display the Test/Maintenance menu. Using the LINE DOWN/LINE
BACK keys the following options are displayed:
Run Self Test
Program Version
Store Enable Default Settings
Reset Statistical Data
For instructions on the use of these options refer to the Test Maintenance Options section later in this manual.
RESET
This key enables the operator to reset MPC2000+ Fault or Alarm conditions. Pressing of this key can only perform a
reset if the following conditions are met:
1. The Tripping/ Alarm Options for the specific fault or alarm are set to allow panel resets.
2. There is no existing Start command
3. The condition that caused the Fault or Alarm to occur no Longer exists.
Providing conditions 2 and 3 are met an operator can override the settings in the Tripping/Alarm Options by closing
the Authorise input and pressing the reset button. Note if the reset key is pressed and the Authorised input is closed a
flash message 'RESET THERMAL CAPACITY' is displayed and if the RESET button is pressed again whilst the
message is displayed the level of Thermal Capacity will be reset to zero.
The exemption to the above rule is when there is a 'WELDED CONTACTOR' fault. To reset the fault the following
procedure must be adhered to:
1. The option for WELDED CONTACTOR in TRIPPING/ALARM OPTIONS must be disabled.
2. The motor attached to the relay must go through a START/STOP cycle.
3. The relay can then be reset using the RESET button.
4. The option for WELDED CONTACTOR in TRIPPING/ALARM OPTIONS can then be re-enabled.
The above process is to ensure that the contactor no longer has any faults.
START A
This key when pressed will energise Contactor A , providing that the unit is set to local and that the drive is available.
START B
This key when pressed will energise Contactor B , providing that the unit is set to local and that the drive is available.
STOP
This button is stayput push to operate, push to reset stop button. The output contact is wired to terminals to either feed
back into the MPC2000+ or to be directly wired to the contactor circuit.
Page 14 ISSUE 7 28/9/99 P&B Engineering