The EA-PS 10000 3U series of programmable DC power supplies are high-performance electronic power supplies designed for industrial test applications requiring high power, current, or voltage. These devices offer models with rated power up to 15 kW, providing a broad spectrum of applications.
Function Description:
The power supplies are internally controlled by various circuits that regulate voltage, current, and power to adjusted values, maintaining them constant where possible. They support constant voltage (CV), constant current (CC), and constant power (CP) operating modes. In CV mode, the DC output voltage is held constant until the output current or power reaches its adjusted limit, at which point it automatically switches to CC or CP operation. Similarly, in CC mode, the DC output current is held constant until the power consumption reaches the adjusted power value. CP mode maintains constant DC output power. The devices also feature internal resistance regulation (CR) for simulating a virtual internal resistor in series with the load, causing a voltage drop that results in a difference between the adjusted and actual output voltage.
For remote control, the devices come standard with USB and Ethernet ports on the rear side, along with a galvanically isolated analog interface. Optional plug-in interface modules (e.g., RS232, Profibus, ProfiNet, ModBus TCP, CAN, CANopen, EtherCAT) can be added to connect to standard industrial buses.
The devices support parallel connection in a master-slave configuration using a "Share BUS" for constant current sharing and a true master-slave connection for totaling actual values. This allows up to 64 units to be combined into a single system with a total power of up to 960 kW. Series connection of two or more devices is also possible, subject to specific safety and isolation restrictions.
Important Technical Specifications:
- AC Input: 208 V/380 V/400 V/480 V ±10%, 3ph AC (208 V 3ph AC with Derating to 3/6/9 kW); Frequency: 45-66 Hz; Power factor: >0.99; Leakage current: <5 mA.
- DC Output Static:
- Load regulation CV: ≤0.05% FS (0-100% load, constant input voltage and constant temperature)
- Line regulation CV: ≤0.01% FS (208 V - 480 V AC ±10% input voltage, constant load and constant temperature)
- Stability CV: ≤0.02% FS (Over 8hrs interval following 30 minutes warm-up, constant input voltage, load and temperature)
- Temperature coefficient CV: ≤30ppm/°C (Following 30 minutes warm up)
- Load regulation CC: ≤0.1% FS (0-100% load, constant input voltage and constant temperature)
- Line regulation CC: ≤0.01% FS (208 V - 480 V AC ±10% input voltage, constant load and constant temperature)
- Stability CC: ≤0.02% FS (Over 8hrs interval following 30 minutes warm-up, constant input voltage, load and temperature)
- Temperature coefficient CC: ≤50ppm/°C (Following 30 minutes warm up)
- Protective Functions: Overvoltage protection (OVP), Overcurrent protection (OCP), Overpower protection (OPP), Overtemperature protection (OT), Safety OVP (for 60 V models), Power Fail (PF), Master-Slave Protection (MSP), Share Bus Fail (SF).
- DC Output Dynamic: Rise time 10-90% CV: <20 ms; Fall time 90-10% CV: <20 ms; Rise time 10-90% CC: <10 ms; Fall time 90-10% CC: <10 ms.
- Display Accuracy: Voltage: ≤0.05% FS; Current: ≤0.1% FS.
- Insulation: AC Input to DC Output: 3750 Vrms (1 Minute); AC Input to case (PE): 2500 Vrms; DC Output to case (PE): Depending on model; DC Output to Interfaces: 1000 V DC (Model up to 360 V output), 1500 V DC (Model from 500 V output).
- Interfaces Digital: Built-in: USB, Ethernet (100 MBit), 1x USB Host; Optional: CAN, CANopen, RS232, ModBus TCP, Profinet, Profibus, EtherCAT, Ethernet.
- Interfaces Analog: Built-in: 15-pole D-Sub; Signal range: 0-10 V or 0-5 V (switchable).
- Device Configuration: Parallel operation: Up to 64 units of any power class in series 10000, with Master-Slave-Bus and Share-Bus.
- Mechanical Construction: 19" x 3U x 668 mm (Enclosure only); Weight: 18.0 kg (5 kW), 25.4 kg (10 kW), 32.8 kg (15 kW).
Usage Features:
- Control Panel (HMI): Features a 5" color TFT touchscreen with Gorilla Glass (800x480pt, capacitive), two rotary knobs with pushbutton function, and one pushbutton. The touchscreen allows selection of set values, menus, and settings, as well as displaying actual values and status. Rotary knobs adjust voltage, current, power, or resistance set values, with push functions for decimal position shifting.
- DC Output Control: A dedicated On/Off button toggles the DC output. LEDs indicate the output state.
- USB Port (Front Side): For connecting standard USB sticks (FAT32 format, max 32 GB) to record measured data (logging) or load profiles. Log files are in CSV format.
- Remote Sensing: A "Sense" connector compensates for voltage drops along DC cables to the load, ensuring accurate voltage at the point of load.
- Adjustment Limits: Users can define upper and lower limits for voltage, current, power, and resistance set values to protect applications.
- Operating Modes: The device supports U/I, U/P, and U/R operating modes, which can be switched via the touchscreen or rotary knobs.
- Voltage Controller Speed: Adjustable settings (Slow, Normal, Fast) influence voltage settling time and overshoot/undershoot during load steps.
- User Profiles: Up to five user profiles can be saved and loaded, storing all settings and set values for quick configuration.
- Quick Menu: Provides quick access to frequently used features and modes by swiping up from the bottom screen edge or tapping a bar.
- Graph Display: A visual depiction of temporal runs of actual voltage, current, and power values.
Maintenance Features:
- Cooling: Forced air flow from front to rear with temperature-controlled fans. Airflow must be unimpeded, and ambient temperature kept low. The device protects itself from overheating by switching off the power stage if the cooling block temperature exceeds 80°C.
- Battery Replacement: The device contains a Lithium battery cell (CR2032) for the KE board, which has a lifespan of at least 5 years. Replacement requires opening the device and should be performed by qualified personnel.
- Firmware Updates: Firmware updates for the control panel (HMI), communication unit (KE), and digital controller (DR) can be performed via the USB port.
- Troubleshooting: The manual provides guidance on fault finding, diagnosis, and repair, including a table of common problems, possible hazards, and safety measures.
- Disposal of Equipment: Equipment intended for disposal must be returned to the manufacturer or disposed of according to European laws and regulations (ElektroG, WEEE). The Lithium battery cell requires specific local regulations for disposal.
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