Chapter 3 – ACS 502 Installation Instructions
ACS 502 Installation & Start-up Manual 3-9
2. TB1 terminals 2 and 8 are “GND 2” (circuit common). TB1 terminals 4,
6, 18, and 20 are also connected to circuit common.
3. These terminals are optically isolated from power and isolated from
chassis ground by a 10 megohm resistor. They are not isolated from one
another.
4. Refer to the Terminal Block Connections section in this chapter for an
outline of control signal requirements when selecting an Application
macro.
Terminal Block
Connections
The Terminal Block TB1 is located on the terminal board. Figure 3-6 shows the
Terminal Block TB1 connections. Terminals TB1:1 through TB1:29 are the
same as terminals X50:1 through X50:29. Refer to the ACS 500 Adjustable
Frequency AC Drives 2 to 350 HP Programming Manual Including
Application Macros to determine the functions of these terminals based on the
Application macro selected.
Figure 3-6 Terminal Block TB1 Connections
Terminals TB1:1 through TB1:20 are low voltage terminals (24 VDC
maximum). Terminals TB1:21 through TB1:29 are relay output terminals.
Ground terminals are located next to TB1:17 and TB1:29. These are to be used
to connect the shields of shielded cables.
Terminals TB1:30 through TB1:55 are 115 VAC control. These terminals are
not used when the 115 VAC Control Transformer is not supplied.
Connection to all of these terminals is described in the following paragraphs.
Note: When 115 VAC Control Transformer is supplied, the Option Pack macro
must be used so the terminal board connections operate properly.
380742 REV
J1
1
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
TB2
123456789
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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
HOA
RUN
11 5V
START
OL
FREEZE
SMOKE/FIRE
BYPASS
SWITCH
M1 EXT FLT XFMR
TB1B
ASEA BROWN BOVERI
ABB DRIVES INC
NEW BERLIN, WI 53151
MADE IN USA
115 VAC
55
54
53
52
51
50
49
48
47
46
SCHEMATIC 380771 ASSY. DWG 380743
SILKSCREEN 380745
CR1
START A UTO
CR2
115V RUN
CR3
ENABLED
CR4
EXT FAULT
TB1C
F1
REPLAC E
W ITH
FNM1
OR
EQUIVALE NT
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