Technical Specifications
Typical Flow Diagram
EPC3 – Amplifier Controller Card
EPC3 - Amplifier Controller CardElectronic controller card with amplifier and special features.
With the EPC3, a single control axis uses a power amplified to drive VS-, VV- and VM-controlled pumps and valves. Basic pump controller configuration allows closed-loop responses for stroke position and pressure feedback.
With a variety of input options, the EPC3 allows flexibility for pump control. When using a digital output signal, two independent function programs can be dynamically selected. This output option also allows for simple diagnostic or a watchdog signal.
These amplifier controller cards also include three general-purpose analog inputs. These allow for command and pressure feedback signals, including ±10 VDC, 0-to-20 mA, or 4-to-20mA. An additional analog input is a dedicated fine-adjustable LVDT stroke feedback device. The module allows for two low-power programmable output signals.
Base Electronic Symbol
At a Glance
- Electronics:Amplifier Controller Card
CAD Files
Please see the included documentation, or contact an Oilgear representative or authorized re-seller.
Documentation
- EPC 300 Series User Manual SERVO AMPLIFIER MODULE Part Number L723888-3xx
- EPC 4 PC Software (.zip) EPC Software - June 2015
- EPC2 Configurations
Product Details
EPC3 is configured by assigning one of 12 built-in function programs to each of the two program blocks. Typically, the output of the function programs is then passed to the internal pump controller. This, in turn, provides the valve command.
With full features in use, up to three independent closed-loop proportional with integral (PI) control algorithms can be utilized. Most function programs provide a closed-loop control algorithm for pressure or stroke. The EPC3 can be configured for both stroke and power feedback.
The EPC3 is programmable through the PC Interface software. Please see the attached documentation for detailed information.
The EPC3 unit can be configured for several types of control applications including:
- Flow control
- Pressure control or load control
- Flow control with pressure limit (PQ-control)
- Horsepower control (pump stroke and pressure)
- Pressure control with flow preset
- Advanced control with feed-forward
