Powtran PI500-E Series

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document describes the POWTRAN PI500-E Series Frequency Inverter, a device designed for controlling and adjusting the speed and torque of three-phase AC synchronous motors.

Function Description

The PI500-E inverter offers a wide range of control and operational functions:

Control System: High-performance vector control inverter based on DSP, supporting V/F control (for factory debugging use), vector control without PG, and vector control with PG.
Acceleration/Deceleration Control: Straight or S-curve mode with four available times, ranging from 0.0 to 6500.0 seconds.
Overload Capability: G type: rated current 150% for 1 minute, rated current 180% for 2 seconds.
Maximum Frequency: Vector control: 0 to 500 Hz.
Carrier Frequency: 2 to 16 kHz, automatically adjusted based on load characteristics.
Input Frequency Resolution: Digital setting: 0.01 Hz, Minimum analog: 0.01 Hz.
Start Torque: Vector control without PG: 2% rated speed, 100% rated torque; Vector control with PG: 0 Hz/180% rated torque.
Speed Range: Vector control without PG: 1:50; Vector control with PG: 1:1000.
Steady-Speed Precision: Vector control without PG: ≤ ± 0.1% (rated synchronous speed); Vector control with PG: ≤ ± 0.02% (rated synchronous speed).
Torque Response: ≤ 40 ms (vector control without PG).
Jogging Control: Jog frequency range: 0.00 Hz to max. frequency; Jog acceleration/deceleration time: 0.0 to 6500.0 seconds.
Multi-Speed Operation: Achieves up to 16-speed operation through the control terminal.
Built-in PID: Easy to realize closed-loop control system for process control.
Automatic Voltage Regulation (AVR): Automatically maintains a constant output voltage when the grid voltage changes.
Torque Limit and Control: "Excavator" feature automatically limits torque during operation to prevent frequent overcurrent trips; closed-loop vector mode is used for torque control.
Self-Inspection of Peripherals: Performs safety testing (ground, short circuit) after power-on.
Quick Current Limiting: Reduces inverter overcurrent probability and improves anti-interference capability.
Timing Control: Time setting range from 0 minutes to 6500 minutes.
Running Method: Keyboard/terminal/communication.
Frequency Setting: 10 frequency settings available, including adjustable DC (0 to 10V), adjustable DC (0 to 20mA), and panel potentiometer.
Start Signal: Rotate forward/reverse.
Emergency Stop: Interrupt controller output.
Wobbulate Run: Process control run.
Fault Reset: Automatic or manual reset of fault conditions.
PID Feedback Signal: Includes DC (0 to 10V) and DC (0 to 20mA).
Output Signal: Motor status display (stop, acceleration/deceleration, constant speed, program running).
Fault Output: Normally closed contact 3A/AC 250V, normally open contact 5A/AC 250V, 1A/DC 30V.
Analog Output: Two-way analog output, 16 selectable signals (frequency, current, voltage), range 0 to 10V / 0 to 20mA.
Run Function: Limit frequency, jump frequency, frequency compensation, auto-tuning, PID control.
Running Command Channel: Three channels: operation panel, control terminals, and serial communication port.
Frequency Source: 10 frequency sources: digital, analog voltage, analog current, multi-speed, and serial port.
Input Terminals: 8 digital input terminals (PNP or NPN input mode compatible, one for high-speed pulse input 0 to 100 kHz square wave); 3 analog input terminals (voltage or current input).
Output Terminals: 2 digital output terminals (one for high-speed pulse output 0 to 100 kHz square wave); one relay output terminal; 2 analog output terminals (0 to 20mA or 0 to 10V).
Inverter Protection: Overvoltage, undervoltage, overcurrent, overload, overheat, overcurrent stall, overvoltage stall, losting-phase (optional), communication error, PID feedback signal abnormalities, PG failure, and short circuit to ground protection.
IGBT Temperature Display: Displays current IGBT temperature.
Inverter Fan Control: Can be set.
Parameter Protection Function: Protects inverter parameters by setting administrator password.
Display: LED/OLED display for running information (frequency, set frequency, bus voltage, output voltage, current, power, torque, input/output terminal status, analog values, motor speed, PID set value/feedback percentage).
Error Message: Stores up to three error messages with time, type, voltage, current, frequency, and work status.
Copy Parameter: Uploads and downloads function code information for rapid replication.
Key Lock Function: Locks part or all keys to prevent misuse.

Important Technical Specifications

Rated Voltage: AC 1PH 220V (-15%) to 240V (+10%); AC 3PH 220V (-15%) to 240V (+10%); AC 3PH 380V (-15%) to 440V (+10%).
Input Frequency: 50 Hz/60 Hz.
Allowable Voltage Fluctuations: Voltage continued volatility: ±10%; Less than 3% of voltage unbalance rate; Input frequency fluctuation: Distortion satisfies IEC61800-2.
Environment Temperature: -10°C to 40°C (derating for 40°C to 50°C).
Storage Temperature: -20°C to 65°C.
Environment Humidity: Less than 90% R.H, no condensation.
Vibration: Below 5.9 m/s² (= 0.6g).
Application Sites: Indoor, no sunlight, corrosive/explosive gas, water vapor, dust, flammable gas, oil mist, drip, or salt.
Altitude: Normally used below 1000m; derate 1% per 100m for areas above 1000m.
Pollution Degree: 2.
Protection Level: IP20.
Safety Standards: IEC61800-5-1:2007.
EMC Standards: IEC61800-3:2005.
Cooling Method: Forced air cooling.
RS485: Built-in 485.

Usage Features

Installation: Requires specific reserve space depending on power rating (e.g., 0.75-7.5kW: A≥100mm, B≥10mm; 90-400kW: A≥300mm, B≥50mm). For multiple inverters, side-by-side mounting is preferred. If stacked, heat insulation deflectors are recommended.
Wiring: Divided into main circuit and control circuit. Users must follow wiring diagrams. Precautions include ensuring power is off before wiring, proper grounding, correct phase sequence for motor terminals, and avoiding connection of power to output terminals. Control cables should be shielded and kept away from main circuit lines.
Commissioning: Involves confirming AC input voltage, connecting power to R, S, T terminals, and selecting the appropriate operation control method. Motor parameter auto-tuning is crucial for vector control, especially if the motor cannot be completely disengaged from its load.
Parameter Settings: Three-level menu structure (group, code, setting). Parameters can be viewed and modified, with some being read-only or modifiable only in stop status. Password protection is available.
Motor Compatibility: Suitable for three-phase permanent magnet synchronous motors. Inverter selection should match motor rated current, with power difference not exceeding two power segments.
EMC Considerations: Designed to comply with electromagnetic compatibility standards (IEC/EN61800-3). Recommendations for reducing interference include proper grounding, using shielded cables, installing surge suppressors, and avoiding parallel routing of signal and power cables.
Braking: Built-in brake unit for 220V 0.4-11kW, 380V 0.75-22kW, and 480V 0.75-22kW models. Additional brake units and resistors are needed for higher power ratings.
Optional Accessories: Supports expansion cards (PG, CANbus), AC input/output reactors, DC reactors, input/output filters, brake units/resistors, MCCB, contactors, and specific wiring types (e.g., shielded symmetrical motor cables).

Maintenance Features

Routine Inspection: Regular checks (every 6 months) for display abnormalities, fan noise/vibration, loose fastenings, overheating, dust, blocked air ducts, abnormal appearance of electrolytic capacitors, and loose wires/conducting bars.
Parts Replacement: Key internal mechanical wear parts, such as cooling fans (1-3 years), filter capacitors (4-5 years), and printed circuit boards (5-8 years), should be replaced regularly.
Storage: Store in a well-ventilated area, free from dampness, dust, or metal dust, within specified ambient temperature ranges. Avoid arbitrary voltage withstand tests.
Capacitor Rebuilding: If the inverter has been stored for a long time, the DC bus capacitor needs to be recharged according to specific instructions (e.g., 1 hour for 1-2 years storage, 2 hours for >3 years storage, with adjustable power or incandescent lights).
Measuring and Readings: Use appropriate instruments for measuring current and voltage. Note that general multi-meters may provide inaccurate readings for three-phase output voltage due to carrier frequency interference.
Warranty: 12-month warranty period from the date of purchase (domestic market), or as per agreement for export/non-standard products. Exceptions include failures due to improper operation, unauthorized repairs, use beyond specifications, improper handling, environmental aging, natural disasters, or shipping damage (if not specified by customer).