502-03676-22 Kollmorgen
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The Kollmorgen 502-03676-22 is part of the PIC900 Drives series and features an 80C186 processor running at 8 MHz. It supports RS232 or RS422/485 electrical interfaces with a maximum baud rate of 19.2 Kbps and can connect up to 32 devices per channel. The unit provides input and output buffers of 1 KB per channel and operates in temperatures from 7 to 55 degrees Celsius.
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Product Description:
The 502-03676-22 module is a communication and control card manufactured by Kollmorgen for the PIC900 Drives series. When installed in a drive rack, it provides serial connectivity and local processing so that motion parameters, status words, and alarms can be exchanged between the drive bus and a supervisory controller. The board acts as a protocol bridge that supports common industrial automation tasks such as start-stop sequencing, speed updates, and health monitoring. Its local processing also helps the drive system manage communication traffic without depending on constant host intervention for every exchange.
Offering an electrical interface selectable as RS232 or RS422/485, the card can be wired in either point-to-point or multi-drop topologies. Hardware handshaking is accomplished with RTS/CTS lines, while an input buffer of 1 KB/channel isolates the link layer from the processor. Sustained data transfer rates reach 19.2 Kbps, and a single port can address up to 32 downstream devices without repeaters. With shielded twisted-pair cabling, a segment may extend to 4000 ft before attenuation becomes critical. A factory-installed 100 Ω termination resistor can be switched in at the end of the line to match impedance and suppress reflections, and an output buffer helps maintain character flow when the host momentarily pauses.
An 80C186 CPU running at 8 MHz executes code and user macros that reside in 32K × 16 EPROM; 8K × 16 RAM. The assembly operates within an ambient range of 7 to 55 °C, yet it withstands non-operating conditions down to -40 to 85 °C, allowing safe shipment or warehouse storage. Physical dimensions of 1.6 × 12 × 8.4 in let the board slide directly into the PIC900 card cage without exceeding standard panel depth. The layout also leaves room for airflow so that convection cooling remains adequate during continuous duty in enclosed control hardware.
