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Table 9 continued: Group 11: Reference Select
1103
REF1 SELECT
Selects the signal source for external reference REF1 .
0 = KEYPAD – Defines the control panel as the reference source.
1 = AI1 – Defines analog input 1 (AI1) as the reference source.
2 = AI2 – Defines analog input 2 (AI2) as the reference source.
3 = AI1/JOYST – Defines analog input 1 (AI1), 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 AI1 (1304 MINIMUM AI2) at 20% (2 V or 4 mA) .
• Set parameter 3021 AI1 FAULT LIMIT to a value 5% or higher .
• Set parameter 3001 AI<MIN FUNCTION to 1 (FAULT) .
4 = AI2/JOYST – Defines analog input 2 (AI2), configured for joystick operation, as the reference source.
• See above (AI1/JOYST) description .
5 = DI3U,4D(R) – Defines digital inputs as the speed reference source (motor potentiometer control).
• Digital input DI3 increases the speed (the U stands for "up") .
• Digital input DI4 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 . Does not apply to Daikin MicroTech III applications .
6 = DI3U,4D – Same as above (DI3U,4D(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 = DI5U,6D – Same as above (DI3U,4D), except that DI5 and DI6 are the digital inputs used .
8 = COMM – Defines the fieldbus as the reference source.
9 = COMM+AI1 – Defines a fieldbus and analog input 1 (AI1) combination as the reference source. See Analog input reference correction below.
10 = COMMAI1 – Defines a fieldbus and analog input 1 (AI1) combination as the reference source. See Analog input reference correction below.
11 = DI3U,4D(RNC) – Same as DI3U,4D(R) above, except that:
• Changing the control source (EXT1 to EXT2, EXT2 to EXT1, LOC to REM) does not copy the reference .
12 = DI3U,4D(NC) – Same as DI3U,4D above, except that:
• Changing the control source (EXT1 to EXT2, EXT2 to EXT1, LOC to REM) does not copy the reference .
13 = DI5U,6D(NC) – Same as DI5U,6D above, except that:
• Changing the control source (EXT1 to EXT2, EXT2 to EXT1, LOC to REM) does not copy the reference .
14 = AI1+AI2 – Defines an analog input 1 (AI1) and analog input 2 (AI2) combination as the reference source. See Analog input reference correction below.
15 = AI1AI2 – Defines an analog input 1 (AI1) and analog input 2 (AI2) combination as the reference source. See Analog input reference correction below.
16 = AI1-AI2 – Defines an analog input 1 (AI1) and analog input 2 (AI2) combination as the reference source. See Analog input reference correction below.
17 = AI1/AI2 – Defines an analog input 1 (AI1) and analog input 2 (AI2) 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 (EXT1 to EXT2, EXT2 to EXT1) 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 (EXT1 to EXT2, EXT2 to EXT1) does not copy the reference .
Analog Input Reference Correction
Parameter values 9, 10 and 14...17 use the formula in the table at the right .
Where:
• C = Main reference value ( = COMM for values 9, 10 and = AI1 for values 14...17) .
• B = Correcting reference ( = AI1 for values 9, 10 and = AI2 for values 14...17) .
Example:
The figure shows the reference source curves for value settings 9, 10 and 14...17, where:
• C = 25% .
• P 4012 SETPOINT MIN = 0 .
• P 4013 SETPOINT MAX = 0 .
• B varies along the horizontal axis .
OM 1191 • MD5 VFD
]
Does not apply to Daikin MicroTech III applications .
Value setting
C + B
C * B
C - B
C / B
22
P
araMeTers
0...17,
1
1 (AI1)
20...21
Calculation of the AI reference
C value + (B value - 50% of reference value)
C value · (B value / 50% of reference value)
(C value + 50% of reference value) - B value
(C value · 50% of reference value) / B value
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