Reliability Electric PSC7000 Control Card Troubleshooting and Maintenance

Reliability Electric PSC7000 Control Card Troubleshooting and Maintenance

The Reliance Electric PSC7000 control card is responsible for core tasks such as program execution, feedback input, and analog output in servo control systems. It adopts a mother frame and modular structure, with three CompactPCI slots at the bottom of the mother frame: the DSP module must be installed on the rightmost side of slot 3, and the PG module and SERCOS module can be installed in slot 1 or slot 2. When replacing or troubleshooting on site, the first thing is not to replace the card, but to confirm whether the slot position, module type, and wiring are consistent with the configuration task. The DSP module has built-in Flash, and the user program will not be lost even if it is powered off or removed from the backplane after downloading; The battery on the DSP module is only used to store non-volatile variables such as NVMEMDEF and NVLOCAL, as well as real-time rewritable values. Therefore, 'program still alive, parameters lost' usually refers to battery or CF card recovery, rather than the DSP program itself.

Installation and disassembly: power off first, unlock first, and then plug and unplug in a straight line

The PSC7000 control card and module are sensitive to static electricity and mechanical stress. Before plugging or unplugging control cards, modules, or connecting cables, the machine power should be turned off to avoid accidental actions; Operators should follow ESD protection and avoid touching the connection pins on the back of the control card. Before inserting the module, the red lock on the handle must be pressed to release the plug-in handle; Align the edge of the module with the slot and push it horizontally into the card guide rail. After pushing it into place, lock the handle and tighten the fixing screws on the upper part of the module and below the handle. It is strictly prohibited to directly push the module panel, otherwise it may damage the card or bend the connector pins. When disassembling, first loosen the upper and lower screws, press the red button to unlock the handle, disconnect the module from the female rack connector, and then pull it out horizontally in a straight line; Do not pull diagonally to avoid damaging adjacent modules or the edges of the mother frame. The module supports disassembly and assembly after power failure, but it is not recommended to plug and unplug the module with power on or connect cables. The working temperature of the control card is 0 to 55 ℃, and the storage temperature is -20 to 85 ℃. It should avoid direct sunlight, proximity to the heater, high humidity, and the entry of metal foreign objects.

The mother machine rack provides three CompactPCI slots, with a 5V power supply capacity calculated as 5V/4A based on the conditions of one DSPM-1A, two MCIM-1, 20 × 7 dot matrix full brightness, 10V output for all analog channels, and maximum current of CF card slot. When adding modules or replacing them with DSPM-2A on site, the power margin should be rechecked to avoid "CPU OK light flashing or system restart after installing the new card". The size of the mother frame is approximately W65 × H220 × D222mm, with a depth of about 250mm after module installation and a weight of about 1718g. Cable and heat dissipation space should be left during installation.

BAT-OK light off: battery must be replaced while powered on

DSPM-1A uses BR-AGC2P (Panasonic 3.0V 2200mAh, Reliance part number 370861), with a standard memory retention time of approximately 13.6 years and a minimum of approximately 6.8 years; DSPM-2A uses CR2032 (FDK or Maxell, 3.0V 210mAh) and maintains the standard for about 8 years. The manufacturer recommends replacing it every 5 years, even if the voltage drop is not significant. BAT-OK green light will turn on when the battery voltage is higher than 2.7V; The BATTERY @ variable is true when the voltage exceeds 2.7V, while BTYWAR @ gives a warning when the voltage approaches 2.7V but falls below 2.9V. If the BAT-OK light goes out, first confirm whether the battery connector is plugged in properly, and then measure or replace the battery; If it still doesn't light up after replacement, handle it as a hardware abnormality and replace the control card.

Key safety point: Battery replacement must be carried out while the PSC7000 control card is in battery state. If the power is cut off and replaced, the backup power supply will be temporarily cut off, and the contents of non-volatile variables may be lost. When replacing DSPM-1A, remove the upper and lower screws of the battery box, pull out the two pole connectors, replace the battery with a new one, insert the connector into the panel hole until it is stuck, then reinstall the battery box and fix it. DSPM-2A: Remove the screws above the battery box, take out the old battery, insert it into CR2032 according to the positive and negative pole markings, and then fix the battery cover. Before replacement, it should be confirmed that the user program has been backed up to the CF card or PSC terminal to avoid parameter loss due to operational errors.