DigitalFlow™ XGM868i Startup Guide 7
Chapter 1. Installation
1.7.1 Wiring the Line Power
The Model XGM868i may be ordered for operation with power inputs of 100-120 VAC, 220-240 VAC, or 12-28 VDC.
The label on the side of the electronics enclosure lists the meter’s required line voltage and power rating. The fuse size
is listed in Chapter 4, Specifications. Be sure to connect the meter only to the specified line voltage.
Note: For compliance with the European Union’s Low Voltage Directive (2006/95/EC), this unit requires an external
power disconnect device such as a switch or circuit breaker. The disconnect device must be marked as such,
clearly visible, directly accessible, and located within 1.8 m (6 ft) of the Model XGM868i.
Note: Only use Class 2 Rated Power supply for line power connection to DC instrument.
Refer to Figure 10 on page 25 to locate terminal block TB5 and connect the line power as follows:
WARNING! Improper connection of the line power leads or connecting the meter to the incorrect line
voltage may damage the unit. It may also result in hazardous voltages at the flowcell and
associated piping as well as within the electronics enclosure.
1. Prepare the line power leads by trimming the line and neutral AC power leads (or the positive and negative DC
power leads) to a length 0.5 in. (1 cm) shorter than the ground lead. This ensures that the ground lead is the last to
detach if the power cable is forcibly disconnected from the meter.
2. Install a suitable cable clamp in the conduit hole indicated in Figure 10 on page 25. If possible, avoid using the
other conduit holes for this purpose, to minimize any interference in the circuitry from the AC power line.
!ATTENTION EUROPEAN CUSTOMERS!
To meet CE Mark requirements, all cables must be installed as described in Appendix A,
CE Mark Compliance.
3. Strip 1/4 in. of insulation from the end of each of the three power line leads.
4. Route the cable through the conduit hole and connect the line power leads to terminal block TB5, using the pin
number assignments shown in Figure 10 on page 25.
5. Leaving a bit of slack, secure the power line with the cable clamp.
WARNING! Make sure both covers, with their o-ring seals, are installed and the set screws tightened before
applying power in a hazardous environment.
CAUTION! The transducers must be properly wired before applying power to the meter.
Proceed to the next section to continue the initial wiring of the Model XGM868i flow transmitter.
To Next Page
Loading...
