ABB ACS550 Series, User Manual

Page: 109 / 310

ACS550 User’s Manual 109
Parameters
Group 11: REFERENCE SELECT
This group defines:
• how the drive selects between command sources
• characteristics and sources for
REF
1 and
REF
2.
Code Description
1101 KEYPAD REF SEL
Selects the reference controlled in local control mode.
1 =
REF
1(Hz/rpm) – Reference type depends on parameter 9904
MOTOR CTRL MODE
.
• Speed reference (rpm) if 9904 = 1 (
VECTOR
:s
PEED
) or 2 (
VECTOR
:
TORQ
).
• Frequency reference (Hz) if 9904 = 3 (
SCALAR
:
FREQ
).
2 =
REF
2(%)
1102 EXT1/EXT2 SEL
Defines the source for selecting between the two external control locations
EXT
1 or
EXT
2. Thus, defines the source for
Start/Stop/Direction commands and reference signals.
0 =
EXT
1 – Selects external control location 1 (
EXT
1).
• See parameter 1001
EXT
1
COMMANDS
for
EXT
1’s Start/Stop/Dir definitions.
• See parameter 1103
REF
1
SELECT
for
EXT
1’s reference definitions.
1 =
DI
1 – Assigns control to
EXT
1 or
EXT
2 based on the state of
DI
1 (
DI
1 activated =
EXT
2;
DI
1 de-activated =
EXT
1).
2…6 =
DI
2…
DI
6 – Assigns control to
EXT
1 or
EXT
2 based on the state of the selected digital input. See
DI
1 above.
7 =
EXT
2 – Selects external control location 2 (
EXT
2).
• See parameter 1002
EXT
2
COMMANDS
for
EXT
2’s Start/Stop/Dir definitions.
• See parameter 1106
REF
2
SELECT
for
EXT
2’s reference definitions.
8 =
COMM
– Assigns control of the drive via external control location
EXT
1 or
EXT
2 based on the fieldbus control word.
• Bit 5 of the Command Word 1 (parameter 0301) defines the active external control location (
EXT
1 or
EXT
2).
• See Fieldbus user’s manual for detailed instructions.
9 =
TIMED FUNC
1 – Assigns control to
EXT
1 or
EXT
2 based on the state of the Timed Function (Timed Function
activated =
EXT
2; Timed Function de-activated =
EXT
1). See Group 36: TIMED FUNCTIONS .
10…12 =
TIMED FUNC
2…4 – Assigns control to
EXT
1 or
EXT
2 based on the state of the Timed Function. See
TIMED
FUNC
1 above.
-1 =
DI
1(
INV
) – Assigns control to
EXT
1 or
EXT
2 based on the state of
DI
1 (
DI
1 activated =
EXT
1;
DI
1 de-activated =
EXT
2).
-2…-6 =
DI
2(
INV
)…
DI
6(
INV
) – Assigns control to
EXT
1 or
EXT
2 based on the state of the selected digital input. See
DI
1(
INV
) above.
1103 REF1 SELECT
Selects the signal source for external reference
REF
1.
0 =
KEYPAD
– Defines the control panel as the reference
source.
1 =
AI
1 – Defines analog input 1 (
AI
1) as the reference
source.
2 =
AI
2 – Defines analog input 2 (
AI
2) as the reference
source.
3 =
AI
1/
JOYST
– Defines analog input 1 (
AI
1), configured for
joystick operation, as the reference source.
• The minimum input signal runs the drive at the maximum
reference in the reverse direction. Define the minimum
using parameter 1104.
• The maximum input signal runs the drive at maximum
reference in the forward direction. Define the maximum
using parameter 1105.
• Requires parameter 1003 = 3 (
REQUEST
).
WARNING! Because the low end of the reference
range commands full reverse operation, do not use 0 V as the lower end of the reference range. Doing so
means that if the control signal is lost (which is a 0 V input) the result is full reverse operation. Instead, use
the following set-up so that loss of the analog input triggers a fault, stopping the drive:
• Set parameter 1301
MINIMUM AI
1 (1304
MINIMUM AI
2) at 20% (2 V or 4 mA).
• Set parameter 3021
AI
1
FAULT LIMIT
to a value 5% or higher.
• Set parameter 3001
AI
<
MIN FUNCTION
to 1 (
FAULT
).
4 =
AI
2/
JOYST
– Defines analog input 2 (
AI
2), configured for joystick operation, as the reference source.
• See above (
AI
1/
JOYST
) description.
+2% -2%
10 V /
Hysteresis 4% of full scale
EXT REF
1
MIN
-
EXT REF
1
MIN
-
EXT REF
1
MAX
EXT REF
1
MIN
EXT REF
1
MAX
-
EXT REF
1
MIN
2 V / 4 mA
0 V / 0 mA
20 mA