How to order KOLLMORGEN Saia PCD series I/O modules?

Protection level: IP20 (IEC 60529), to be installed inside the control cabinet to avoid dust and condensation water;

Installation spacing: Reserve ≥ 25mm heat dissipation space on both sides of the module for vertical installation (allowing ± 15 ° tilt), and additional fixation is required for heavy-duty modules (such as PCD2. H32x).

Terminal installation

Screw terminal: torque 0.7-0.8Nm (compatible with M3 screws), wire diameter 0.5-2.5mm ²;

Cage type spring terminal (PCD3 specific): No tools required, directly insert the wire (maximum 1.0mm ²), press the release button when pulling out, and increase wiring efficiency by 30%.

（2） Key specifications for electrical wiring

Power supply and grounding

Digital module: 24V DC power supply needs to be supplied separately (ripple ≤ 10%), PE wire cross-section ≥ 1.5mm ², single point grounding is used (grounding resistance ≤ 1 Ω);

Simulation module: The signal ground and power ground are wired separately, and the analog signal cable adopts twisted pair shielded wire (single end grounding of the shielding layer) to avoid parallel connection with the power cable (spacing ≥ 200mm).

Typical wiring example

Digital input (source wiring): PCD2.E110 module E0-E7 is connected to the sensor signal,+24V is connected to the positive pole of the external power supply, and the negative pole of the sensor is connected to the module GND. The LED lights up to indicate that the input is valid;

Analog output (current type): PCD3.W410 module A0 connected to actuator (such as valve positioner), external 24V DC power supply positive pole connected to actuator, negative pole connected to module A0 terminal, select 4-20mA signal range through jumper;

Isolation module: The PCD2.E610 module needs to be separately connected to a 24V isolation power supply, and the signal end should be completely isolated from the PLC system ground to avoid common ground interference.

Function configuration and programming support

（1） Hardware configuration

Address setting

Digital module: Set the CANopen station address (1-99) and baud rate (10-1000kbit/s) through the DIP switch on the front-end of the module. After setting, restart the 24V power supply to take effect;

Expansion card configuration: Multifunctional modules such as PCD2.G410 need to be plugged into a communication expansion card (such as a PROFIBUS card) through Slot 1/2, and the module will automatically recognize it after power on. If it is not recognized, the locking status of the card buckle needs to be checked.

Signal filtering

Digital input: Select the filtering time through the internal jumper of the module (such as PCD2.E111 supporting 0.2ms/8ms switching), and select a short filtering time for high-frequency signals (such as encoders);

Analog input: PCD3.W380 supports software configuration of digital filtering (50/60Hz notch filtering) to suppress power grid interference, with a filtering time constant of 2.4ms.

（2） Software Configuration (PG5 Environment)

tool support

Saia PG5 software (version ≥ 2.3) is required to configure module parameters through the "Device Configurator":

Motor configuration: Select the motor model (such as AKM series servo motor), automatically load rated current, inductance and other parameters, and execute "Motor Probe" to optimize the current loop gain;

Safety configuration: The STO function needs to be associated with a safety controller and set a periodic testing interval (≤ 8 hours, meeting SIL CL3 requirements);

Linearization of analog signals: The PCD2-W745 thermocouple module requires the selection of thermocouple type (J/K type), and the software automatically compensates for the cold junction temperature (compensation accuracy ± 0.2 ℃).

Programming Example

Counting function: PCD2.H100 reads the counting value through the IL command "RD-DIGIAL-IO-0TO15", and sets "WR-DIGIAL-OUTPUT0TO15" to trigger the counter reset;

Servo control: PCD2.H310 sets the target position through the FB function block "MC_SoveAbsolute", and the parameter "Position" is filled in with the number of pulses (to match the electronic gear ratio).

Troubleshooting and Maintenance

（1） Common faults and solutions

Troubleshooting steps for possible causes of fault phenomena

No response to digital input (LED not lit) 1. Power supply not working; 2. Loose wiring; 3. Input signal exceeds the range. 1. Measure the 24V voltage at the X4A terminal of the measurement module; 2. Re tighten the terminal screws (torque 0.8Nm); 3. Check the sensor output (e.g. NPN sensor needs to output a low level)

Simulated output deviation exceeds tolerance 1. Calibration parameters are lost; 2. Load impedance mismatch; 3. Signal distortion caused by interference. 1. Perform "Analog Calibration" through PG5 to recalibrate; 2. Confirm load resistance: voltage output ≥ 3k Ω, current output ≤ 500 Ω; 3. Add shielding layer grounding (single ended grounding)

Relay output contact adhesion: 1. Load current exceeds the set value; 2. Contactless protective components; 3. Frequent switching: 1. Measure the load current (such as A200 maximum 2A/channel); 2. Inductive load connected in parallel with 1N4007 freewheeling diode; 3. Reduce switching frequency (recommended ≤ 10 times/minute)