Bacharach MGS 400 User Manual

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Contents

Bacharach MGS 400 User Manual Manual pdf 19 page image

1100-2294 Rev 1 183.4.2 Power & Signal Wiring1. Locate the relevant connections (Power, Analog, Modbus) and remove the terminalblock from the PCBA. (The PCB terminal blocks are pluggable type and may beremoved to aid termination.)Connection Description Label Wiring TerminationPower24 VDC/VAC IN24V IN: - 24 VDC/VAC neutral /ground24V IN: + 24 VDC positive / VAC live24 VDC/VAC OUT(power daisy chainterminal)24V OUT: - 24 VDC/VAC neutral /ground24V OUT: + 24 VDC positive / VAC liveDigital Output Modbus NetworkCommunicationsMODBUS: B RS-485 “B” (inverted)MODBUS: A RS-485 “A” (non-inverted)MODBUS: GND RS-485 GNDMODBUS: SH RS-485 ShieldAnalog Output Voltage or CurrentOutputANALOG: - Analog output groundANALOG: + Analog output signal (+)2. Remove plugs from the corresponding M16 cable glands. The product comes with cable glands and plugs pre-installed. (The power entrycable gland is shipped from the factory without a plug.)3. Using the appropriate cable glands, insert wires into the enclosure.4. Secure the wires in each terminal block and, pressing firmly, reinstall the terminal blockinto the PCBA. Polarity must not be reversed. For 24 VAC installations in a daisy-chain configuration, the neutral polarity mustbe maintained for all instruments.5. Remove all excess cable from the housing before securing the cable glands.