ABB ACS 400 User Manual page 79

1103 EXT REF1 SELECT
This parameter selects the signal source of external reference 1.
0 =
KEYPAD
Reference is given from the control panel.
1 = AI 1
Reference is given through analogue input 1.
2 = AI 2
Reference is given through analogue input 2.
3 = AI1/ ; 4 = AI2/
JOYST
Reference is given through analogue input 1 (or 2 accordingly) configured for a joystick. The minimum input
signal runs the drive at maximum reference in the reverse direction. The maximum input signal runs the
drive at maximum reference in the forward direction (See Figure 37). See also parameter 1003
Caution:
Minimum reference for joystick should be 0.3 V (0.6 mA) or higher. If a 0 ... 10 V signal is used,
the ACS 400 will operate at maximum reference in the reverse direction if the control signal is lost. Set
parameter 1301
to 1 (
FUNCTION FAULT
EXT REF
-
-
EXT REF
Figure 37 Joystick control. Maximum for external reference 1 is set with Parameter 1105 and
minimum with Parameter 1104.
5 = DI3U,4D(R)
Speed reference is given through digital inputs as motor potentiometer control. Digital input DI3 increases
the speed (the U stands for "up"), and digital input DI4 decreases the speed (the D stands for "down"). (R)
indicates that the reference will be reset to zero when a Stop command is given. The rate of change of the
reference signal is controlled by parameter 2204
6 = DI3U,4D
Same as above, except that the speed reference is not reset to zero on a Stop command. When the
ACS 400 is started, the motor will ramp up at the selected acceleration rate to the stored reference.
7 = DI4U,5D
Same as above, except that the digital inputs in use are DI4 and DI5.
8 = COMM
The reference is given through serial communication.
9 = COMM + AI1
10 = COMM * AI1
The reference is given through serial communication. The analogue input 1 signal is combined to the
fieldbus reference (sum or multiplication). For more information, see chapter "Standard Serial
Communication" on page 115.
ACS 400 User's Manual
JOYST
AI1 to a value 3 % (corresponding 0.3 V) or higher, and parameter 3001
MINIMUM
), and the ACS 400 will stop in case the control signal is lost.
1
MAX
1
EXT REF MIN
1
EXT REF MIN
1
MAX
2 V / 4 mA
0 V / 0 mA
10 V / 20 mA
Hysteresis 4 % of Full Scale
1
EXT REF MIN
-2 %
- 1
EXT REF MIN
2.
ACCELER TIME
DIRECTION
<
AI MIN
+2 %
.
69