ABB ACH550-UH User Manual page 117

ACH550-UH User's Manual
Commissioning the override mode:
1. Enter the parameters in all groups as needed, except group 17. Run Enable/Start
Enable inputs configured prior to enabling the override mode will be acknowledged
in override. Inputs configured after enabling override will be ignored (Low priority
safeties).
2. Select the digital input that will activate override mode P1701.
3. Enter the frequency or speed reference for override mode, P1702 and P1703,
according to the motor control mode P9904.
4. Enter the pass code P1704 (358).
5. Enable the override mode P1705.
Changing the override parameters:
1. If override mode is already enabled, disable it:
• Enter the pass code P1704.
• Disable the override mode P1705.
2. If needed, load the override parameter set P9902.
3. Change the parameters as needed, except group 17.
4. Change the parameters in group 17 as needed:
• Digital input for override mode P1701.
• Frequency or speed reference, P1702 or P1703.
5. Enter the pass code P1704.
6. Enable the override mode P1705. The drive replaces the override parameter set with
new values of all parameters.
Code Description
1701 OVERRIDE SEL
Selects the source of the override activation signal.
0 = – Override activation signal not selected.
NOT SEL
1 = 1 – Defines digital input DI1 as the override activation signal.
DI
• This digital input must be activated for override activation signal.
2...6 = 2... 6 – Defines digital input DI2...DI6 as the override activation signal.
DI DI
• See DI1 above.
(-1) = 1( ) – Defines an inverted digital input DI1 as the override activation signal.
DI INV
(-2)...(-6) = 2( )...
DI INV
• See 1( ) above.
DI INV
1002 PAR PFA IOCONF
1003 PAR AI SCALE
1004 PAR AO SCALE
1006 PAR EXTROMISSING
1007 PAR FBUSMISSING
1008 PAR PFAWOSCALAR
Group 17: Override
Range
-6...6
6( ) – Defines an inverted digital input DI2...DI6 as the override activation signal.
DI INV
Resolution Default
1 0 (
NOT SEL
1-113
S

)
Parameters