ACH550-UH User’s Manual
1-95
Parameters
1103
REF1 SELECT
0…17, 20…21
1
1 (
AI
1)
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.
5 =
DI
3
U
,4
D
(
R
) – Defines digital inputs as the speed reference source (motor potentiometer control).
• Digital input
DI
3 increases the speed (the
U
stands for “up”).
• Digital input
DI
4 decreases the speed (the
D
stands for “down”).
• A Stop command resets the reference to zero (the
R
stands for “reset”).
• Parameter 2205
ACCELER
TIME
2 controls the reference signal’s rate of change.
6 =
DI
3
U
,4
D
– Same as above (
DI
3
U
,4
D
(
R
)), except:
• A Stop command does not reset the reference to zero. The reference is stored.
• When the drive restarts, the motor ramps up (at the selected acceleration rate) to the stored reference.
7 =
DI
5
U
,6
D
– Same as above (
DI
3
U
,4
D
), except that
DI
5 and
DI
6 are the digital inputs used.
8 =
COMM
– Defines the fieldbus as the reference source.
9 =
COMM
+
AI
1 – Defines a fieldbus and analog input 1 (
AI
1) combination as the reference source. See Analog input
reference correction below.
10 =
COMM
*
AI
1 – Defines a fieldbus and analog input 1 (
AI
1) combination as the reference source. See Analog input
reference correction below.
11 =
DI
3
U
,4
D
(
RNC
) – Same as
DI
3
U
,4
D
(
R
) above, except that:
• Changing the control source (
EXT
1 to
EXT
2,
EXT
2 to
EXT
1,
LOC
to
REM
) does not copy the reference.
12 =
DI
3
U
,4
D
(
NC
) – Same as
DI
3
U
,4
D
above, except that:
• Changing the control source (
EXT
1 to
EXT
2,
EXT
2 to
EXT
1,
LOC
to
REM
) does not copy the reference.
13 =
DI
5
U
,6
D
(
NC
) – Same as
DI
5
U
,6
D
above, except that:
• Changing the control source (
EXT
1 to
EXT
2,
EXT
2 to
EXT
1,
LOC
to
REM
) does not copy the reference.
14 =
AI
1+
AI
2 – Defines an analog input 1 (
AI
1) and analog input 2 (
AI
2) combination as the reference source. See
Analog input reference correction below.
15 =
AI
1*
AI
2 – Defines an analog input 1 (
AI
1) and analog input 2 (
AI
2) combination as the reference source. See
Analog input reference correction below.
16 =
AI
1-
AI
2 – Defines an analog input 1 (
AI
1) and analog input 2 (
AI
2) combination as the reference source. See
Analog input reference correction below.
17 =
AI
1/
AI
2 – Defines an analog input 1 (
AI
1) and analog input 2 (
AI
2) combination as the reference source. See
Analog input reference correction below.
20 =
KEYPAD
(
RNC
) – Defines the control panel as the reference source.
• A Stop command resets the reference to zero (the
R
stands for reset.).
• Changing the control source (
EXT
1 to
EXT
2,
EXT
2 to
EXT
1) does not copy the reference.
21 =
KEYPAD
(
NC
) – Defines the control panel as the reference source.
• A Stop command does not reset the reference to zero. The reference is stored.
• Changing the control source (
EXT
1 to
EXT
2,
EXT
2 to
EXT
1) does not copy the reference.
Group 11: Reference Select
Code Description Range
Resolution
Default
S
+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
Summary of Contents for ACH550-UH HVAC
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Page 8: ...1 8 ACH550 UH User s Manual Table of contents ...
Page 32: ...1 32 ACH550 UH User s Manual Installation ...
Page 66: ...1 66 ACH550 UH User s Manual Application macros ...
Page 186: ...1 186 ACH550 UH User s Manual Parameters ...
Page 333: ...ACH550 UH User s Manual 1 333 Technical data ...
