IMHSS03 ABB Bailey PLC
The IMHSS03 of Harmony rack I/O are I/O modules, termination units, and the I/O expander bus. The Harmony controllers and rack I/O modules communicate over I/O expander bus. Together a controller and its I/O modules form a subsystem within the Symphony system.The controller performs the actual control functions and the I/O modules process any inputs from and outputs to field devices for the controller. The termination units provide field wiring termination for I/O modules. The controller can communicate with up to 64 I/O modules connected to the I/O expander bus.
IMHSS03 ABB Bailey PLC
IMHSS03 ABB Bailey PLC
IMHSS03 ABB Bailey PLC
IMHSS03 ABB Bailey PLC
Analog Input Of IMHSS03
The following analog inputs are supported (Fig. 3):
■ 4 to 20 milliampere.
■ 0 to 1 VDC.
■ -10 to +10 VDC.
■ 0 to +10 VDC.
■ 0 to +5 VDC.
■ 1 to 5 VDC.
■ -100 to +100 millivolt (DC).
■ 0 to 100 millivolt (DC).
Analog Output
The following analog outputs are supported (Fig. 4):
■ 4 to 20 milliampere.
■ 1 to 5 VDC.
IMHSS03 ABB Bailey PLC
IMHSS03 Harmony Bridge Controller and IMMFP11 and IMHSS03 Multifunction Processors are rack-mounted controllers. Each controller occupies one slot in a MMU. These controllers support the function code environment necessary to configure and operate Harmony rack I/O devices.Additionally, the bridge controller supports Hnet communication protocol and device labelingnecessary to operate the Harmony I/O system (I/O blocks). Hnet (Harmony I/O communications network) is the network over which Harmony controllers and Harmony I/O blocks communicate.The bridge controller can communicate with Harmony rack I/O devices and Harmony I/O blocks simultaneously.Like the bridge controller, the Harmony area controller supports the communications protocol and configuration environment necessary to operate both Harmony rack I/O devices and Harmony I/O blocks. It collects process I/O data, performs control algorithms, and outputs control signals to final control elements through either or both types of I/O devices. The area controller offers enhanced communications and process interface abilities.All Harmony rack I/O configuration is performed through the controller using function codes.Function codes are predefined, fixed function algorithms. The controller supports numerous function codes for building the control configuration. The functions they perform range from computing (function generator, square root, etc.) to control (PID, pulse positioner, etc.) to I/O interface (analog input, digital output, etc.). The Harmony bridge controller and IMHSS03 area controller allow using both rack I/O function codes and I/O block function codes concurrently to communicate with both types of devices simultaneously. The controllers are fully compatible with existing configurations.
IMHSS03 ABB Bailey PLC
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