SIEMIENS SIMATIC 505 Analog I/O Module

Current input (0-20mA): First, short-circuit the current input terminal (A1 "I1 in") to the voltage input terminal (A2 "V1 in"). Connect the signal+to A1 and the signal - to A3. The short circuit should be directly connected with a wire and should not pass through high resistance components to ensure that the current flows through the internal 250 Ω resistor

4.2.3 Typical wiring scenarios

2-wire transmitter wiring (input module): transmitter+connected to input module current input terminal, transmitter - connected to return terminal, module provides power to transmitter through internal circuit;

4-wire transmitter wiring (input module): The transmitter is independently powered, with signal+connected to the current input terminal and signal - connected to the return terminal;

Output module wiring (4-channel example): Each channel simultaneously outputs voltage (such as A2 "V1 out") and current (A1 "I1 out"), which are connected to the corresponding actuators. The common terminal (Return) is grounded uniformly.

4.3 Module Installation and I/O Configuration

4.3.1 Module installation steps

Power off operation: Before installation, turn off the controller and all external power sources to avoid electric shock or component damage;

Slot selection: Insert the module into the idle single width I/O slot of the Series 505 controller, avoiding proximity to high-energy switch modules or EMI sources (such as frequency converters);

Fixed module: Tighten the module panel with screws and control the torque at 2.6-4.12 in lb (0.3-0.6N · m) to avoid damaging the module or base due to over tightening;

Static protection: Do not touch the module circuit board during installation, and wear an anti-static wristband if necessary.

4.3.2 I/O Configuration Process

Configuration tool: Use SIMATIC 500/505 TISOFT Release 6.3 software to connect the controller through programming devices;

Module registration: Select the base number and slot number in the "I/O Module Definition Table", configure the module type and I/O parameters (Table 2-1):

|Module model | WX (number of input words) | WY (number of output words)|

| PPX:505–6108A | 08 | 00 |

| PPX:505–6108B | 08 | 00 |

| PPX:505–6208A | 00 | 08 |

| PPX:505–6208B | 00 | 08 |

Address allocation: The system automatically assigns I/O addresses (such as the input module address for slot 1 starting from WX0001), which are downloaded to the controller after configuration is complete;

Verify configuration: After powering on, observe the "Module Good LED" of the module. If the LED lights up, it indicates that the configuration is successful and the module has no faults.

Calibration and maintenance process

5.1 Basic Requirements for Calibration

5.1.1 Calibration cycle and conditions

Calibration cycle: It is recommended to calibrate every 6-12 months; If the module is used in high temperature and vibration environments for a long time, or if the measurement accuracy exceeds the tolerance, it needs to be calibrated immediately;

Environmental conditions: The calibration environment temperature is 25 ℃± 2 ℃, with no vibration or electromagnetic interference. The module reaches working temperature after being powered on for 30 minutes;

Tool preparation:

Calibration power supply: DC voltage source with an accuracy of ≥ 0.01% (used for input module calibration);

Measurement tool: a multimeter with an accuracy of ≥ 0.1% (for voltage/current measurement);

Load resistance: 5.1k Ω± 5% (voltage output calibration), 100 Ω± 5% (current output calibration);

Auxiliary tools: non-metallic screwdriver (to avoid short circuits), Euro extender card (optional, convenient for accessing potentiometers).

5.1.2 Calibration precautions

Disconnect the on-site wiring before calibration, leaving only the connections between the module, controller, and calibration equipment;

The controller needs to switch to "STOP mode" to avoid interference with calibration during operation;

The input module needs to first select the voltage range (jumper setting ± 5V or ± 10V) before calibration;

During the calibration process, avoid touching the module circuit board to prevent static damage or short circuits.

5.2 Input module calibration steps (PPX: 505-6108A/6108B)

Power off preparation: Turn off the controller power, disconnect the module field wiring. If using Euro extender card, remove the module first, insert the card, and then install the module onto the card;

Range selection: Select the calibration voltage range (± 5V or ± 10V) through the jumper on the module circuit board;

Power on preheating: Turn on the controller power and wait for 30 minutes for the module to reach operating temperature;

Device connection: Connect programming devices and controllers to ensure that module input data can be read; Connect the calibration voltage source to all input channels of the module;

Full range calibration (positive direction):

Input+5V (± 5V range) or+10V (± 10V range) to all channels;

Adjust the calibration potentiometer on the module circuit board with a non-metallic screwdriver until the programming device displays an average of+32000 for all channel numbers;