ADLINK DIN-814P-A4 Panasonic servo adapter board configuration

3. Wiring of limit, origin, and deceleration sensors

Connect PEL, MEL, ORG, PSD, MSD to the output terminals of the corresponding proximity switch or micro switch, and connect the other end of the switch to IGND or+24V, depending on the sensor type (NPN low effective or PNP high effective). The input of the board is optocoupler isolated and triggered at a low level (short circuit to IGND), so it is recommended to use NPN type sensors.

If a normally closed limit is used, it is normally at a high level (through internal pull-up) and pulled low when triggered.

4. Brake control

Connect the BRK-OFF+and BRK-OFF - of BH to an external relay coil (with a series current limiting resistor or relay module). The brake signal is automatically controlled by the motion card during servo activation or emergency stop to prevent the motor from falling freely after power failure.

5. Analog monitoring (speed/torque)

If real-time monitoring of motor speed or torque is required, SPO (speed monitoring) or IMO (torque monitoring) can be connected to an oscilloscope or ADC input, with an output voltage of ± 10V analog, corresponding to 0~rated speed/torque.

Principles and Compatibility of Circuit Interface

The manual provides internal circuit structures for various signals (see schematic diagram) to facilitate understanding of load capacity:

Limit/origin/deceleration input: Optocoupler isolation, input side needs to be connected in series with a current limiting resistor (onboard), input current is about 5-10mA, low level is effective (i.e. pin to IGND short circuit triggering).

SVON/ERC/RES/C-Mode outputs: open collector output, requiring external pull-up to+24V (there is already a pull-up resistor inside the board).

Differential pulse/direction (500k/2M): RS-422 differential drive, can be directly connected to the differential receiving end of the driver. Select valid pin groups for jumper cables.

Encoder feedback input: differential receiver, built-in 120 Ω terminal resistor.

BRK-OFF output: differential signal, used to drive brake relay (requires external power amplification).

Common problems and troubleshooting

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

Check whether the CNIF cable is connected correctly and whether there is pulse output in OUT ±/DIR ± (measure the corresponding pin with an oscilloscope).

Check whether the SVON signal is valid (usually SVON should be at high level after the sports card software is enabled). Measure the SVON pin voltage of CNIF, which should be close to+24V.

Check if the JP jumper settings match the driver parameters (for example, if the driver is set to pulse input mode, but the jumper selection is incorrect, resulting in the use of the wrong pin group).

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

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 (+24V).

Check: The sensor type matches the input polarity of the board (low validity). If PNP is used, additional conversion or change of software polarity is required.

Check: Whether the sports card software has enabled the hardware limit function and has not blocked the hardware due to software limit.

Problem 3: Abnormal motor operation or positioning deviation

Check if the pulse frequency exceeds the upper limit of the selected jumper mode (500k or 2M). If it exceeds the limit, it is necessary to increase the jumper mode or decrease the command frequency.

Check if the encoder feedback lines EA/EB are reversed or open circuited, resulting in incorrect position loops.

Check: Is the electronic gear ratio (DIV signal) set correctly? If DIV is not connected, the default division ratio may not meet the requirements.

Problem 4: The brakes cannot be released or lock up

Check if there is any output from BRK-OFF+/- (usually after enabling the brake release, emergency stop or power failure, hold tightly).

Inspection: Check if the external relay coil is normal and if the voltage matches.

Check: Check if the polarity of the brake signal is correct (release when BRK-OFF+is high and BRK-OFF - is low).

Problem 5: PSD function does not meet expectations

Confirmation: The sports card model you are using. If it is 8134, PSD is the deceleration signal; If it is the 8164 series and PSD is mapped to CMP or LTC, please refer to the corresponding manual for configuration.

Problem 6: Simultaneous use of CNIF and SJ leads to anomalies

Root cause: The two signals are short circuited, and a physical alternative must be chosen. If switching is required, it is recommended to use an external relay, but the board does not provide it, so only one can be chosen.

Maintenance and safety recommendations

Regularly check the tightness of the wiring terminals, especially the power and brake circuits.

Do not plug or unplug connectors while they are live to prevent static electricity or surge damage.

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

The emergency stop function needs to be implemented at the level of the motion control card (DIN-814P-A4 does not directly provide emergency stop input, it needs to be stopped through the EMG signal of the motion card or software).