ABB ACH550-BCR, User Manual

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1-114 ACH550-UH User’s Manual
Parameters
1702
OVERRIDE FREQ -500…500 Hz 0.1 0.0 Hz

Defines a preset frequency for the override.
Note:
Set this value if motor control mode (Par. 9904) is
SCALAR
:
FREQ
(3).
1703
OVERRIDE SPEED -30.000…30.000 rpm 1 0 rpm

Defines a preset speed for the override.
Note! Set this value if motor control mode (parameter 9904) is
VECTOR
:
SPEED
(1).
1704
OVERR PASS CODE 0…65535 1 0

Entering the correct override pass code unlocks parameter 1705 for one change.
• Enter the pass code always before changing the value of the parameter 1705.
• See parameter 1705 below.
• The pass code is 358.
• The entry reverts back to zero automatically.
1705
OVERRIDE 0…1 1 0 (
OFF
)

Selects whether the override is enabled or disabled.
0 =
OFF
– Override disabled.
1 =
ON
– Override enabled.
• When enabled, the drive stores the values of all parameters into an override parameter set (see parameter 9902)
and the parameters in Group 17 will be write protected (except parameter 1704). To change the other
parameters in the Group 17, override has to be disabled.
1706
OVERRIDE DIR -6…7 1 0 (
FORWARD
)

Selects the source of the override direction signal.
0 =
FORWARD
– Assigns forward as the override direction.
1 =
DI
1 – Defines digital input
DI
1 as the override direction signal.
• Activating the digital input selects the forward direction.
• De-activating the digital input selects the reverse direction.
2…6 =
DI
2…
DI
6 – Defines digital input
DI
2…
DI
6 as the override direction signal.
• See
DI
1 above.
7 =
REVERSE
– Assigns reverse as the override direction.
-1 =
DI
1(
INV
) – Defines an inverted digital input
DI
1 as the override direction signal.
• De-activating the digital input selects the forward direction.
• Activating the digital input selects the reverse direction.
-2…-6 =
DI
2(
INV
)…
DI
6(
INV
) – Defines an inverted digital input
DI
2…
DI
6 as the override direction signal.
• See
DI
1(
INV
) above.
1707
OVERRIDE REF 1, 2 1 1 (
CONSTANT
)

Selects the source of the override reference.
1 =
CONSTANT
– Selects a preset frequency or speed for the override. The frequency value is defined by parameter
1702
OVERRIDE FREQ
and the speed value by parameter 1703
OVERRIDE SPEED
.
2 =
PID
– The reference is taken from the PID output, see group 40 PROCESS PID SET 1.
•
Note:
The following conditions must be met when using PID in the override mode:
• PID1 set point (parameter 4010
SET POINT SEL
) can be either
A
1,
A
2 or
INTERNAL
. Other selections including
KEYPAD will prevent enabling Override Mode and will display FAULT 1011 PAR OVERRIDE.
• PID1 parameter set 1 must be active (parameter 4027
PID
1
PARAM SET
=
SET
1).
• Override direction (parameter 1706
OVERRIDE DIR
) can be either 0 =
FORWARD
or 7 =
REVERSE
.
Group 17: Override
Code Description Range Resolution Default S