Product Description:

The 502-03518-03 analog output card is supplied by Kollmorgen for the PIC900 Drives series. It mounts in the drive backplane to generate regulated differential voltages that link the motion controller with downstream actuators or external process equipment. By converting digital position or speed commands into precise DC levels, the board forms a signal bridge between the PIC900 control processor and servo amplifiers, valves, or transducers within an automated line.

Each channel supplies a nominal output of ±11 VDC, with voltage error kept within ±5% of the setpoint, and it can source or sink up to ±10 mA at ±10 V to satisfy varied load impedances. The signal path uses a differential analog stage, which helps reduce common-mode noise in electrically noisy cabinets. Output quality is maintained by a ripple figure of <10 mVRMS at 30 kHz, helping prevent unintended dithering of connected drives. Resolution is 16 bits, which allows small command increments during fine positioning routines. Digital-to-analog conversion is synchronized across the card so that successive updates reach the field wiring at the same time, and measurement accuracy is supported by the board’s tightly controlled internal reference.

Physical integration is managed through a 25-pin card edge that slides into the PIC900 backplane, while outgoing wiring clamps to screw terminals on the front panel. The board provides 8 outputs, allowing simultaneous control of multiple axes or process channels. At startup, each output is held to 0 V ±20 mV, and the same limit is enforced during a controller scan loss to help prevent unintended actuation. Internally, the converter resolves commands into 65536 discrete steps and refreshes the analog rails every 32 µs to support tight loop times. Overcurrent events are handled by a current-limited output stage, and a DIAG LED on the bezel provides immediate visual status.