ABB ACS 502 Series - Page 48

Chapter 3 – ACS 502 Installation Instructions
3-10 ACS 502 Installation & Start-up Manual
Terminal Block TB1 Terminal Block TB1 can accept wire sizes from 12 – 22 AWG. All
connections to Terminals TB1:1 to TB1:20 should be made with shielded
cables.
TB1:2, 4, 6, 18, and 20 are circuit common. They are optically isolated from
the power line potential and from chassis ground by a 10 megohm resistor.
The common points are not isolated from each other.
Figure 3-7 shows connections TB1:1 through TB1:29.
Figure 3-7 TB1:1 Through TB1:29
Potentiometer A manual speed potentiometer is connected to the reference at TB1:1 (+10
VDC) and TB1:2 (common), and to one of the analog inputs. When the speed
potentiometer is supplied from the factory for manual (Hand) operation, it is
connected to AI2 (TB1:5).
Analog Inputs The ACS 502 has two analog inputs. AI1 is on Terminals TB1:3 and TB1:4.
AI2 is on TB1:5 and TB1:6, and is used by the Manual Speed Potentiometer
when it is supplied.
The analog inputs can accept a voltage signal (0 – 10 VDC) or a current signal
(0 – 20 mA). Jumpers S1 and S2, located on the Control Interface Board in the
ACS 502 (S1 for AI1 and S2 for AI2), determine the signal type.
The jumper is placed in the “V” position for voltage, and the “I” position for
current. Orientation may vary with different versions of the control interface
board.
Place the jumper in the left position for voltage or the right position for
current. Figure 3-8 shows jumper positions. The shaded areas represent
jumper positioning.
Figure 3-8 Jumper Positions
Note: These jumpers are set in the voltage position from the factory. The
control interface board assembly is mounted on the door, and is hinged
for easy access. To change the jumpers, remove the two screws on the
fixed side of the assembly.
17
AO1+
18
AO1-
19
AO2+
20
AO2-
21
RO11
22
RO12
23
RO13
24
RO21
25
RO22
26
RO23
27
RO31
28
RO32
29
RO33
TB1A
1
REF
+10V
2
COM1
3
AI1+
4
AI1-
5
AI2+
6
AI2-
7
+24V
200mA
8
COM2
10
+24V
10mA
11
DI1
12
DI2
13
DI3
14
DI4
15
DI5
16
DI6
VI
Voltage
VI
Current
ABB0045A