Application and Configuration of ADLINK DIN-814Y Adapter Board

ADLINK DIN-814Y adapter board application and configuration detailed explanation

In industrial automation motion control systems, reliable connection between high-performance motion control cards (such as ADLINK's PCI-8134, PCI-8164, PXI-8164, or MPC-8164 series) and servo or stepper motor drivers is the foundation for stable system operation. DIN-814Y is a 4-axis interface adapter board designed specifically for this type of requirement. It provides standardized signal routing and convenient wiring terminals, supports Yaskawa series servo amplifiers and universal stepper motor drivers, greatly simplifying system integration work. This article will provide you with a complete DIN-814Y application guide from the perspectives of hardware architecture, interface definition, signal mapping, typical applications, and troubleshooting.

Product positioning and hardware overview

DIN-814Y is a passive adapter board (passive backplane), whose core function is to convert the CN1 (or CN2) high-speed signal interface of the motion control card into industrial terminals that are convenient for on-site wiring. It supports up to 4 motion axes, each axis providing two interface options:

CNIF # (# represents axis numbers 1-4): A 50 pin dedicated interface designed specifically for Yaskawa ∑ series servo drives, including all signals such as speed command, encoder feedback, enable, alarm, position pulse, etc.

SJ #: A 10 pin simple interface provided for stepper motor drivers, including pulse, direction, enable, alarm, and+5V power output.

Important warning: CNIF # and SJ # on the same axis are directly short circuited inside the PCB (signal lines are connected in parallel). It is strictly prohibited to use two interfaces at the same time, otherwise it may cause signal conflicts and hardware damage.

In addition, each axis is equipped with an IOIF # (10 pin mechanical I/O interface) for connecting limit switches (positive limit PEL, negative limit MEL), origin signal ORG, deceleration signal (PSD/MSD), and reset signal RES. For each axis, a BH # auxiliary interface (16 pins) is also provided to extend other signals defined by Yaskawa (such as absolute value encoder battery, torque command, alarm code output, etc.), making it convenient for users to connect additional functions without changing the main cable.

The board is powered by an external+24VDC power input (CN1), which is isolated to provide power to all optocoupler inputs/outputs, ensuring electrical isolation from the computer side. At the same time, there are LED indicator lights near each axis on the board, which intuitively display the status of PEL, MEL, and ORG, facilitating on-site debugging.

Interface Definition and Signal Explanation

1. CNIF # servo interface (50 pins)

This is the core interface of DIN-814Y, used to connect Yaskawa servo drives (such as SGDV, SGDH, etc.). The following is the analysis of key signals:

Key points of the signal name direction function description project

The simulated voltage (± 10V or 0-10V) of the V-REF output speed command is controlled by the DAC output of the motion control card to regulate the motor speed; Pay attention to impedance matching.

T-REF outputs torque command analog voltage (optional) for torque control mode, usually not used.

OUT+, OUT - differential output pulse signal (Line Driver) is used for position control mode, combined with DIR direction signal to form step/servo pulse command.

DIR+, DIR - The differential output of the output direction signal determines the direction of motor rotation, and the level corresponds to forward/reverse rotation.

EA+, EA -, EB+, EB - Input Encoder A/B differential input receives encoder signals returned by servo drives for position closed-loop and interpolation.

EZ+, EZ - Input encoder Z-phase (zero point) input is used for origin reset and position zeroing.

PSO+, PSO - output encoder S phase (serial data) output Yaskawa absolute value encoder data line (battery powered).

SVON outputs a servo enable signal high (or low, depending on the driver settings) to excite the motor.

ALM input servo alarm signal is valid when the driver fails, and the motion card should immediately stop pulse output.

The INP input positioning completion signal is valid when the servo completes the instruction position, and is used to confirm that it is in place.

The RDY input servo ready signal indicates that the driver has been powered on and has no faults, and can accept commands.

SEN output absolute value encoder reset is used to clear multi turn data or reset the encoder.

BAT+, BAT - The output encoder battery power provides backup power (usually 3.6V) for the absolute value encoder.

P-CON, P-CL,/N-CL input proportional control/positive current clamp/negative current clamp advanced servo parameter control, generally processed by default.

AL01~AL03 output alarm number output (3-digit binary) can read alarm codes and assist in diagnosis.

PL1 output collector open circuit+12V output can provide low current power supply for external sensors.

+24VO output isolation+24V output is provided by an external input power supply after isolation, which can be used to drive photoelectric sensors, etc.

IGND - Ground reference for all isolated signals, separated from Digital Ground (DGND).

2. SJ # stepper interface (10 pins)

For stepper motor drivers, DIN-814Y provides a simplified interface with signal definitions as follows:

OUT+, OUT -: Pulse signal differential output (same as the OUT signal of the servo interface).

DIR+, DIR -: Differential output of directional signals.

EZ+: Encoder Z-phase input (used for step closed loop or origin signal, not necessary).

ALM: Driver alarm input.

SVON: Enable output.

+5VO: Provides a+5V power supply (up to 100mA) to power the optocoupler input of the stepper driver.

IGND: Quarantine location.

Note: The pulse/direction of the stepper interface and the corresponding pulse/direction of the CNIF are electrically parallel, so they cannot be connected to external devices at the same time.

3. IOIF # mechanical I/O interface (10 pins)

This is the key interface for connecting sensors such as limit and origin on site:

PEL: Positive End Limit - a normally closed contact that prohibits forward movement when triggered.

MEL: Negative End Limit.

ORG: Origin signal.

PSD: Positive Slow Down signal, used to reduce speed before approaching the limit.

MSD: Negative deceleration signal.

RES: Reset signal (clearing errors or interrupting current motion).

+24VO and IGND: Provide isolated power supply for sensors.

Special note: PSD signals have different meanings on different motion cards:

When combined with PCI-8134, PSD serves as a forward deceleration signal (i.e. Slow Down).

When combined with PCI-8164/PXI-8164/MPC-8164, the PSD of axis 0/1 is mapped to CMP1/2 (compare output), and the PSD of axis 3/4 is mapped to LTC3/4 (latch input). For detailed functions, please refer to the user manual of the corresponding sports card.

4. BH # auxiliary interface (16 pins)

The BH interface provides some Yaskawa specific signals that have not been extracted from CNIF, including:

SEN (absolute value reset), BAT+/BAT - (battery), PSO+/PSO - (S phase), P-CON (proportional control) V-REF、T-REF、/P-CL、/N-CL、AL01~AL03、PL1（+12V）、+24VO、IGND。

This interface is mainly used to facilitate users to directly connect the additional function cables of the driver without using standard CNIF cables. There are also LED indicator lights next to BH, displaying the status of PEL, MEL, and ORG for easy on-site confirmation.

5. CN1 external power input

The board requires an external isolated power supply of+24VDC ± 5%, which is input through CN1 (two pin). This power supply supplies power to all isolated side circuits (including optocouplers, relay outputs, etc.), please ensure that the power capacity is sufficient (recommended at least 1A). There is also a spare CN1 on the board, which is connected in parallel internally, making it convenient for users to choose the wiring location.

Key application scenarios and wiring guidance

1. Typical connection of servo system (Yaskawa)

Connect the DIN-814Y CNIF1 to the Yaskawa servo drive CN1 (or CN2) port using a dedicated cable (such as ADLINK matching cable or self-made differential cable).

Connect the axis interface of the sports card (usually 68 pin SCSI or D-sub) to the corresponding axis input port (labeled on the board) of DIN-814Y through a flat cable.

Connect the external 24V power supply to CN1.

Connect the limit and origin sensors to the PEL, MEL, and ORG terminals of IOIF1, respectively. Note that the sensor type (NPN/PNP) needs to be compatible with the board (the board is designed as an NPN normally closed type, but can be adapted through jumpers or external relays).

After checking for accuracy, power on and the motion card should be able to enable servo and read encoder feedback normally after initialization.

2. Connection of stepper motor system

Connect the pulse+, pulse -, direction+, and direction - of the stepper driver to the OUT+, OUT -, DIR+, and DIR - of SJ1, respectively.

If the driver requires an enable signal, it can be connected to SVON; If alarm input is required, connect to ALM.

Use the+5VO of the board to power the optocoupler end of the driver (if the driver requires an external power supply).

Similarly connect the limit and origin to IOIF1.

Note: Due to the parallel connection of SJ and CNIF signals, if one axis is not connected to servo, SJ can be connected to stepper, but not both at the same time.

3. Multi card synchronization and SSI (not DIN-814Y function, but mentioned)

The DIN-814Y itself is passive, and synchronization is achieved through the SSI bus by a sports card (such as the 8164 series). The DIN-814Y is only responsible for signal fan out.

Common problems and troubleshooting

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

Check: Does V-REF have voltage output? If it is 0, check if the motion card DAC output configuration and SVON are set high.

Check whether the IGND of CNIF is well connected to the driver ground, and the analog signal needs to be grounded.

Check if the servo parameters have been set and if the external speed command is valid.

Problem 2: The limit signal trigger is invalid, and the movement continues

Check whether the PEL/MEL of the IOIF terminal is wired correctly, and whether the sensor type (normally open/normally closed) matches the default logic of the board (normally closed). If using normally open, polarity reversal needs to be set in the software.

Check: whether the isolated power supply+24VO is normal and whether the sensor is powered on.

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

Problem 3: Encoder feedback value jumps or is incorrect

Check if the EA/EB differential line is twisted and shielded to avoid being in the same slot as the power line.

Check if the terminal resistance matches (Yaskawa usually needs to set it on the driver side).

Check: If using an absolute value encoder, confirm that BAT+/- is connected to the battery and the voltage is normal.

Problem 4: Simultaneous use of CNIF and SJ leads to anomalies

Root cause: The two are short circuited and must be physically isolated. If switching is necessary, it is recommended to use relays or jumper caps for selection, but the board does not provide them, so only one of the two can be chosen.

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 becomes CMP or LTC, you need to refer to the 8164 manual to configure the corresponding functions.

Maintenance and upkeep suggestions

Regularly check whether the wiring terminals are loose, especially for high current+24V and IGND.

Avoid plugging or unplugging connectors while they are live to prevent damage to the optocoupler from static electricity or surges.

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

In case of lightning strikes or power fluctuations, it is recommended to add external surge protectors.