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CT-600-2
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5
General description
5.1
ACP LINK architecture
The ACP LINK (see figure below) consists of the ACP LINK panel with HMI (Human Machine Interface) and
several electronic modules mounted directly on the main components (compressors, oil separator,
economizer), including one module in the external electrical panel. The connections between the ACP LINK
panel and the electrical panel handles power supply, safety chain and communication signals (Modbus
RTU). The compressor and oil system modules (CM-SW-01 and CM-IO) are only connected to the ACP
LINK panel. The connection to the plant and starter equipment is handled with digital and analog signals
from/to the ACP LINK panel and the IO-module in the electrical starter panel. There is also the possibility of
Modbus TCP/IP communication from the ACP LINK panel. Each of the modules are connected to local
sensors and actuators for the different main components.
ACP LINK panel with PLC and HMI
The ACP LINK panel is the central component that handles the monitoring, protection, operation and
communication of the entire ACP. The ACP LINK panel contains the PLC (Schneider Electric type M251), the
HMI (Schneider Electric type HMI3GU with 12.” HMIDT651 touch screen). The ACP LINK panel is connected
to the different compressor (CM-SW) and oil system (CM-IO) modules and the electrical panel IO-module
(M172) via the Modbus-RTU communication cable and power/signal cables.
The ACP LINK panel is prepared for Modbus TPC/IP communication with the superior plant control system.
The HMI is a touch-screen monitor for the normal user interface to the ACP. It is possible to access the HMI
remotely on a PC or mobile device (smart phone, tablet, etc.) via web-access or a local Wi-Fi.
The parameters of the system and the operation mode are adjusted on the HMI. Configuration is done via the
HMI.
ACP
Link
Panel