ADLINK DIN-814-GP Universal Adapter Board Configuration

Principles of Circuit Interface and Signal Compatibility

The manual provides the internal circuit structure of several types of signals to facilitate users' understanding of load capacity and wiring requirements:

Limit/origin input (PEL, MEL, ORG): using optocoupler isolation, the input terminal needs to be connected to an external power supply (I24V), and the signal is low level valid (i.e. triggered when the input pin is short circuited to IGND). If a PNP sensor is used, it needs to be converted through an intermediate relay or a specialized level conversion circuit.

Servo enable (SVON) and universal output (DO): The output is open collector (OC), and an external pull-up resistor needs to be connected to I24V (the board already has a pull-up resistor, but the driving capability needs to be confirmed). Output low level is valid.

Differential pulse/direction (OUT ±, DIR ±): RS-422 differential drive, compliant with EIA standards, can be directly connected to the differential receiving end of the servo drive. If the driver is a single ended input, differential to single ended circuits can be used or only OUT+and IGND can be used (but this may reduce anti-interference performance).

Encoder feedback input (EA ±, EB ±, EZ ±): Differential receiver that receives differential encoder signals from the driver. The board has integrated terminal resistors (usually 120 Ω) internally and does not require external connections.

Common problems and troubleshooting

Problem 1: After the servo is enabled, the motor does not rotate and there is no alarm

Check if the OUT ± and DIR ± of the CM interface are wired correctly and if the motion card has issued a pulse command.

Check if the SVON signal is at a high level (usually requires software enablement). Measure the SVON pin voltage of CM with a multimeter, which should be close to+24V (the OC output high level needs to be pulled up).

Check if the driver parameters are set to 'external pulse command' and if the pulse type is' pulse+direction '.

Check if the CN2 power supply is properly connected (the voltage between I24V and IGND should be 24V).

Problem 2: Invalid limit or origin signal

Check whether the PEL/MEL/ORG of the IOIF terminal is correctly connected to the sensor and whether the sensor is powered (I24V).

Check: The sensor type (NPN/PNP) matches the input polarity of the board. DIN-814-GP input is low level valid (triggered by IGND), if using PNP sensor (output high level), additional conversion or change of software polarity setting is required.

Check if the software limit of the motion control card is turned off (to prevent software from preferentially blocking hardware limits).

Problem 3: Emergency stop cannot be triggered

Check if the emergency stop button between CN2-2 (EMG) and CN2-1/3 (GND) is properly closed (short circuited when pressed).

Check whether the emergency stop signal has been correctly transmitted to the driver end (the EMG pin of CM is directly connected to the EMG of CN2, but it needs to be confirmed that the EMG input on the driver side is wired correctly).

Check if the drive parameters have been set to external emergency stop.

Problem 4: Encoder feedback value jumps or is incorrect

Check if the encoder cable is a twisted pair shielded wire and if the shielding layer is grounded at the driver end.

Check whether EA ± and EB ± are correctly paired with the driver output (A and A, B and B), as reversed polarity can cause the count value to reverse.

Check if the terminal resistance matches (the board is already built-in, but the driver may also be built-in. If the parallel resistance decreases, disconnect one end).

Problem 5: Incorrect use of DIN-814-GP for non compatible sports cards

Consequence: The signal level and definition are completely mismatched, which may result in damage to the control card or driver. Be sure to verify the model of the sports card, only for use with PCI-8134/8164/8154/8158.

Maintenance and safety recommendations

Regularly check the tightness of wiring terminals, especially power cords and emergency stop circuits.

Do not plug or unplug cables while they are live to prevent static electricity or surges.

Keep the board clean to avoid short circuits caused by metal debris.

The emergency stop circuit must adopt a dual channel redundant design (such as safety relays), and this board only provides a single channel, requiring external enhancement.

If it is needed for applications with higher safety levels, it is recommended to add external safety relays and monitoring circuits.