ACS2000 User manual 2UEA001270 Rev. F 3-11 (26)
Chapter 3 - Control system
3.3 Interface system
This section provides an overview of the control system used in the drive
to transfer all the necessary functionalities of control, status, monitoring
and protection signals between the drive and higher-level control systems
or operator stations.
The following communication devices are available:
• IOEC modules 1 and 3 - internal to drive operation
• IOEC modules 2 and 4 - connection to external customer controls
• Fieldbus communication interfaces - option
Figure 3-10 IOEC I/O system overview
3.3.1 IOEC I/O
3.3.1.1 Overview
Internal and external, analog and digital I/O signals are connected to the
control system by IOEC modules.
The standard I/O includes one customer communication module (IOEC2)
and one module that is internal to the drive operation (IOEC1). The
standard I/O provides standard control and supervision functionalities
sufficient for most applications.
The drive can include optional expansion I/O that includes a customer
communication module (IOEC4) and an internal module (IOEC3). These
expansion modules provide extra inputs and outputs for control and
supervision as may be required by ABB or the customer to support various
control options.
Internal drive Customer connection Internal drive Customer connection
Standard I/O Optional I/O
INU control board Fieldbus
IOEC1
module
(A1501)
IOEC2
module
(A1541)
IOEC3
module
(A1581)
IOEC4
module
(A1621)
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