What is the 1756-hyd02 module, What the module does, Chapter 1 – Rockwell Automation 1756-HYD02 ControlLogix Hydraulic Servo Module User Manual
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Publication 1756-UM525A-EN-P - June 2003
9
Chapter
1
What is the 1756-HYD02 Module?
This chapter describes the ControlLogix Hydraulic Servo module.
What the Module Does
THe 1756-HYD02 module is typically used for accurate positioning and
control of a hydraulic cylinder. The module can be wired to a linear
displacement transducer (LDT) for feedback and a proportional or servo valve
for control of a hydraulic axis and connects to a hydraulic system to close a
high-speed position loop. Each Logix controller can support up to 16
1756-HYD02 modules. Each 1756-HYD02 module can control up to two
axes.
The 1756-HYD02 module monitors the position feedback via the linear
displacement transducer (LDT) input and generates an analog command
reference for the valve to make sure that the actuator (cylinder) follows the
profile. The 1756-HYD02 module closes the position loop at a programmed
rate using position feedback as the input and produces a +/-10V analog
output velocity command.
The module is programmed with motion instructions in the RSLogix 5000
programming software and must be in the same chassis as the ControlLogix
controller that controls the module. If you distribute motion control that uses
the 1756-HYD02 module across different locations, place a ControlLogix
controller in each chassis that has a 1756-HYD02 module. In this case, use a
1756-SYNCH module to synchronize motion between the multiple chassis.
Transducers connected to the 1756-HYD02 must accept external
interrogation signals. In this case, the transducer generates its position
information each time that it receives an interrogation pulse. Do not use
transducers configured for internal interrogation because they will not be
properly synchronized to the module.
For more information about:
See page:
Using A ControlLogix Hydraulic Servo Module in
the ControlLogix System
Preventing Electrostatic Discharge