MOTOROLA MVME2604 Relay input module

See wiring diagrams. Observe polarity. * Do not make any connections to unused terminals or use them as wiring junctions for external devices. This may cause permanent damage to the module! Range Selection See the tables on the next two pages to select I/O ranges for your application. The module side label also lists common ranges. It is generally easier to select ranges before installation. See the model/serial number label for module information, options, or if a custom range was specified. For ranges that fall between the listed ranges use the next highest setting and trim the output signal with the zero and span potentiometers.Note that when using a current shunt input, it measures a mV drop across a fixed resistance, typically 50 mV, 75 mV or 100 mV. The correct input setting would be the appropriate mV range for the shunt.

Electrical Connections

 Polarity must be observed for input and output wiring connections. If the input and/or output do not function, check switch settings and wiring polarity. Voltage Output Set switch E to "V" for a voltage output. If your receiving device (such as a PLC or a display) uses a voltage input, use terminals 3 and 4. Current Output Set switch E to "I" for a current output. Determine if your receiving device (such as a PLC or a display) provides power to the current loop or if the loop must be powered by the APD module. Typical voltage may be 9-24 VDC at your device's input terminals if it provides power to the loop. If your device does not power the current loop, the APD can provide power using terminals 3 and 4

Current Input

 Determine if your transmitter provides power to the current loop or if the loop must be powered by the APD module. Typical voltage may be 9-24 VDC at your transmitter's output terminals if it provides power to the loop. If your transmitter or an external supply provides power to the loop, use terminals 9 and 11 as shown below right. If your transmitter does not power the current loop, the APD can provide power using terminals 10 and 11 as shown far right. Voltage Input If your transmitter provides a voltage output, use terminals 9 and 11 as shown at right.

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