The Panasonic FP7 Analog Output Unit (AFP7DA4H) is a programmable controller component designed for industrial applications, converting digital data into analog output signals. This user manual, WUME-FP7AOH-03, provides comprehensive information on its functions, specifications, usage, and maintenance.
Function Description:
The FP7 Analog Output Unit converts internal digital data into analog values to be output to inverters or other analog-driven equipment. It supports various output ranges and provides a high-speed D/A conversion process. The unit is equipped with four channels for analog output.
The basic operation involves three steps:
- Writing digital data: A user program writes digital data to the output relay area (WY) on a channel-by-channel basis. This digital data is then output in analog form.
- Analog conversion processing: The written digital data is converted to an analog value automatically.
- Output to analog-driven equipment: The converted analog values are output to inverters or other analog-driven equipment.
The unit offers several option settings for analog output, including:
- Offset / Gain Processing: Allows for adding an offset value (correction) and applying a gain value (magnification correction) to the digital output data. This helps in fine-tuning the output and compensating for load device characteristics.
- Scale Conversion: Enables setting a present minimum and maximum value to store data in the I/O area, converting digital input values to the analog output unit to include fractions. This function is convenient for unit conversion.
- Upper and Lower Output Clipping: This function allows clipping the output with specified values in excess of the upper and lower limit range. If the specified values are set for digital output, the function makes it possible to prevent the wrong application of voltages or currents out of the specifications to equipment to be connected. The upper limit relay turns ON if the digital output value is larger than the upper limit, and the lower limit relay turns ON if the digital output value is smaller than the lower limit.
- Analog Output Hold while in PROG. Mode: This function holds the analog output when the PLC mode is switched from RUN to PROG. The analog output value can be set to "Desired value hold," "Current value hold," or "Non-hold" on a channel-by-channel basis. If no analog output is held, the output will be turned OFF (0 V or 0 mA) while in PROG. mode.
Important Technical Specifications:
- Applicable Model: AFP7DA4H
- Output Channels: 4 channels
- D/A Conversion Speed: As high as 25 µs/channel.
- Resolution: Converts set digital values into analog data with up to 16 bits, offering a resolution of 1/25,000 to 1/62,500 depending on the range.
- Output Ranges (Voltage):
- -10 to +10 V (Resolution: 0.32 mV, 1/62,500)
- 0 to +10 V (Resolution: 0.32 mV, 1/31,250)
- 0 to +5 V (Resolution: 0.16 mV, 1/31,250)
- +1 to +5 V (Resolution: 0.16 mV, 1/25,000)
- Output Ranges (Current):
- 0 to +20 mA (Resolution: 0.64 µA, 1/31,250)
- +4 to +20 mA (Resolution: 0.64 µA, 1/25,000)
- Total Accuracy: ±0.1% F.S. max. (at +25°C) and ±0.3% F.S. max. (at 0°C to +55°C).
- Output Impedance (Voltage Output): 0.50 max.
- Maximum Output Current (Voltage Output): 10 mA
- Output Allowable Load Resistance (Current Output): 500 Ω max.
- Insulation System: Between input terminals and internal circuit: Photocoupler and isolated DC/DC converter. Between channels: Non-isolated.
- Operating Ambient Temperature: 0°C to +55°C
- Storage Ambient Temperature: -40°C to +70°C
- Operating Ambient Humidity: 10% to 95% (RH) with no condensation (at 25°C)
- Storage Ambient Humidity: 10% to 95% (RH) with no condensation (at 25°C)
- Breakdown Voltage:
- Between I/O terminals and power supply terminals of CPU unit / function earth: 500 V AC for 1 minute
- Between analog output unit and power supply terminals of CPU unit / function earth: 200 V AC for 1 minute
- Insulation Resistance:
- Between I/O terminals and power supply terminals of CPU unit / function earth: 100 MΩ (Test voltage: 500 V DC)
- Vibration Resistance: Conforming to JIS B 3502 and IEC 61131-2. 5 to 8.4 Hz, 3.5-mm single amplitude. 8.4 to 150 Hz, acceleration 9.8 m/s². 10-time sweeping in X, Y, and Z directions (1 octave/min.).
- Shock Resistance: Conforming to JIS B 3502 and IEC 61131-2. 147 m/s² or more, 3 times each in X, Y, and Z directions.
- Noise Resistance: 1,000 V DC (p-p) with pulse width of 50 ns/1 µs (by using a noise simulator) (Applied to the power supply of the CPU unit).
- Environment: Free from corrosive gases and excessive dust.
- EU Directive Applicable Standard: EMC Directive: EN 61131-2.
- Overvoltage Category: Category II.
- Pollution Degree: Pollution degree 2.
- Current Consumption: 250 mA or less (for AFP7DA4H).
- Dimensions: 28 mm (W) x 90 mm (H) x 80 mm (D) (excluding fixing hook).
Usage Features:
- Wiring: The unit uses M3 terminal screws. Suitable solderless terminals (fork type and round type) are recommended for wiring. The manual specifies suitable wire sizes (AWG22 to 14, 0.3 mm² to 2.0 mm²) and a tightening torque of 0.5 to 0.6 N·m. The terminal block is removable for easier wiring; it can be removed by pushing down the release lever and reinstalled by inserting it fully and pressing the lock button.
- Analog Output Connections: Detailed internal circuit diagrams and terminal layouts are provided for both voltage output (-10 to +10V, 0 to +10V, 0 to +5V, +1 to +5V) and current output (0 to +20 mA, +4 to +20 mA).
- Shielding and Grounding: It is crucial to use double-core twisted-pair shielded wires for analog output signals. The shielding should be grounded on the load equipment side. Depending on external noise conditions, grounding the shielding on the unit side may also be beneficial.
- Noise Prevention: To prevent noise interference, analog output wiring should be kept away from AC lines, high-tension lines, or load lines.
- NC Terminals: The NC terminals of the analog output terminal block are unused and should not be wired, as they are internally connected.
- I/O Number Allocations: Digital data for analog output is allocated to the external output relay area (WY), and control I/O signals are allocated for error processing and output limit clipping. The manual provides tables detailing input and output contact allocations (CH0-CH3) and their descriptions.
- Configuration Settings: The FPWIN GR7 configuration menu is used to set analog output unit parameters such as output range, offset, and gain settings. The configuration process involves selecting the unit, setting the starting word number, and configuring various output parameters.
- Unit Memory: The unit memory numbers are used to set configuration parameters. The manual lists setting items and their corresponding unit memory numbers (UM00108 to UM00141) for output processing, output range, function settings (offset/gain, scale conversion, clipping, analog output in PROG. mode), offset value, gain value, scale conversion max/min values, and upper/lower limit clipping.
Maintenance Features:
- Safety Precautions: The manual emphasizes observing safety precautions to prevent personal injury or property damage. This includes reading the manual thoroughly, understanding safety information (Warning and Caution symbols), taking external safety measures, avoiding use in flammable atmospheres, not throwing the product into fire, preventing abnormal heat or smoke generation, not disassembling or modifying the product, avoiding touching terminals while power is on, configuring emergency stop circuits, connecting wires properly, and not performing work with power turned on.
- Error Handling: A dedicated section outlines steps to take if an error occurs, specifically for unstable or unchanged analog output values.
- Unstable Analog Output Value: Check if the shielded wire of the input device is grounded and review the program.
- Unchanged Analog Output Value: Check if the unit is in RUN mode, verify I/O allocations, check terminal block connections, ensure the impedance of the input device is within specifications (500 Ω or below for current output), confirm the output is not short-circuited, check that the digital input value is within range, and review configuration settings.
- Record of Changes: The manual includes a record of changes, indicating revisions and corrections made over time. For example, WUME-FP7AOH-03 (May 2021) changed the manual format.
- Order Placement Recommendations and Considerations: This section provides important information regarding product specifications, manufacturing, and discontinuance. It also details safety precautions, acceptance inspection, warranty, and scope of warranty, emphasizing that the products are designed for industrial use only and that Panasonic Industrial Devices SUNX Co., Ltd. is not responsible for damages resulting from uses not specified by Panasonic.
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