Bacharach MGS 400 User Manual

Also see for MGS-400: User manual

Contents

Bacharach MGS 400 User Manual Manual pdf 22 page image

1100-2294 Rev 1 21● Instruments at end of bus have 120Ω terminating resistor enabled. Terminating resistorsmay be enabled via the MGS-400 App (refer to Section 4.2.3.6 for more information).● A/B signal polarity is maintained throughout RS-485 network.● Connect cable shield drain to physical earth or ground at the controller only.● Connect cable shield drain to (SH) terminal at instrument.● Cable shield integrity is maintained throughout RS-485 network.● Do not use shield connection for signal ground. Use cable that provides dedicatedground conductor for signal ground. Connect signal ground to (GND) terminal ofinstrument.3.4.7 Confirming Instrument FunctionalityAfter all wiring has been completed, power the transmitter and perform a calibration / bump testto verify instrument functionality:1. Switch power on.2. Allowing the instrument to complete its start-up sequence and the sensor to stabilize.3. Perform a calibration or bump test to confirm instrument functionality. (For instructionson performing a calibration or bump test, see Section 5.2.)4. After verifying instrument functionality, reinstall the enclosure lid. Reinstall the rubber gasket in the transmitter and / or remote sensor. Ensure thatit is seated correctly before replacing lid. (Note that the IP41-rated configurationsdo not include a rubber gasket.) Using a 5/32″ (4 mm) hex key / allen wrench (not included) tighten the lid screwsin an “X” tightening pattern. (Tightening torque should be limited to hand tight,and should be uniform.)