ABB ACS 400 - Control Terminals

ACS 400 User’s Manual 15
K Control Terminals
Main I/O terminal X1
.
Digital input impedance 1.5 k
Ω.
Use multi-strand 0.5-1.5 mm
2
(20-16 AWG) wire.
Note! For safety reasons the fault relay signals a “fault” when the ACS 400 is powered
down.
Note! DI 4 and 5 are electrically isolated from DI1, 2, and 3. To utilize DI4 and 5, a jumper
must be connected. See section M for details.
Note! Terminals 3, 6 and 8 are at the same potential.
X1 Identification Description
1 SCR Terminal for signal cable screen. (Connected internally to chassis ground.)
2 AI 1 Analog input channel 1, programmable.
Default: 0 - 10 V (R
i
= 200 kΩ) (J1:AI1 open) <=> 0 - f
nom
frequency reference
0 - 20 mA (R
i
= 500 Ω) (J1:AI1 closed) <=> 0 - f
nom
frequency reference
Resolution 0.1 % accuracy ±1 %.
3 AGND Analog input circuit common. (Connected internally to chassis ground through 1 MΩ.)
4 10 V 10 V/10 mA reference voltage output for analog input potentiometer, accuracy ±2 %.
5 AI 2 Analog input channel 2, programmable.
Default: 0 - 20 mA (R
i
= 500 Ω) (J1:AI2 closed) <=> 0 - f
nom
frequency reference
0 - 10 V (R
i
= 200 kΩ) (J1:AI2 open) <=> 0 - f
nom
frequency reference
Resolution 0.1 % accuracy ±1 %.
6 AGND Analog input circuit common. (Connected internally to chassis ground through 1 MΩ.)
7 AO1 Analog output, programmable. Default: 0-20 mA (load < 500 Ω) <=>0-f
nom
output frequency
8 AGND Common for DI return signals.
9 24 V Auxiliary voltage output 24 V DC / 250 mA (reference to AGND).
Short circuit protected.
10 DCOM1 Digital input common for DI1, DI2 and DI3.
DI Configuration To activate a digital input, there must be ≥+10 V (or ≤-10 V) between that input and
DCOM1. The 24 V may be provided by the ACS 400 (X1:9) using the connection examples
(see Section M) or by an external 12-24 V source of either polarity.
HVAC Hand-Auto Macro (8) (default)
11 DI 1 AUTO mode Start/Stop Close to start. Motor
will ramp up to frequency reference. Open to
stop. Motor will coast to stop.
12 DI 2 Run Enable: Close to enable
13 DI 3 Select constant speeds 1 to 7
14 DI 4 Select constant speeds 1 to 7
15 DI 5 Select constant speeds 1 to 7
16 DCOM2 DCOM2 digital input common for DI4, DI5
17 RO1 Relay output 1, programmable (default: fault => 17 connected to 18).
12 - 250 V AC / 30 V DC, 10 mA - 2 A
18 RO1
19 RO1
20 RO2 Relay output 2, programmable (default: running => 20 connected to 22).
12 - 250 V AC / 30 V DC, 10 mA - 2 A
21 RO2
22 RO2
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