Chapter 4 – ACS 504 Installation Instructions
4-14 ACS 502 Installation & Start-up Manual
Figure 4-9 SNAT-759 Connections
External control devices, for example a PLC or remote operator devices, are
connected to Terminal Block X50 according to the connection diagram of
each Application macro or according to the programming of the parameters in
Main 10, Control Connections. The connection diagrams of Application
macros are presented in the ACS 500 Adjustable Frequency AC drives 2 to
350 HP Programming Manual Including Application Macros. The X50
connection diagram based on factory settings is presented in Figure 4-8
(Control Interface Card SNAT-759 connections). The terminal functions can
be altered by means of parameter settings.
X50
Terminal Block X50 can accept wire sizes from 16 – 22 AWG. All
connections to terminals X50:1 to X50:20 should be made with shielded
cables.
X50:2, 4, 6, 8, 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.
Potentiometer
A manual speed potentiometer is connected to the reference at X50:1 (+ 10
VDC) and X50:2 (common), and to one of the analog inputs.
Analog Inputs
There are two analog inputs. AI1 is on terminals X50:3 and X50:4. AI2 is on
X50:5 and X50:6.
The analog inputs can accept a voltage signal (0 – 10 VDC) or a current signal
(0 – 20 mA), as selected by jumpers S1 and S2 (S1 for AI1 and S2 for AI2).
The jumper is placed in the “V” position for voltage and the “I” position for
current. Figure 4-9 shows jumpers. Orientation may vary with different
versions of the control interface board.
V/mA Selectors
for AI1 and AI2
X53
S1
X51
S3
no
term
X50
K1 K2 K3
X55
X54
X56
1234567891011121314151617181920 212223 242526 272829
Connectors f
Option Board
EPROM
Customer
Interface
Terminals
S4
RS-485
Serial
Communications
S2
I
V
X57
X60
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