Baker Hughes Panametrics Sentinel LCT8, Руководство пользователя

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Figure 13: Typical terminal board (three 4-20mA inputs option)
2.5.2 Cable tie-down posts
There are two cable tie-down posts provided in the Sentinel
LCT8 transmitter (see Figure 14 below). These posts enable
the user to insert a cable tie through them, and secure the
wiring coming into or out of the instrument. The posts rotate
on the printed circuit board to provide ease-of-use.
•
Power cable tie-down post - use this tie-down post to
secure the power cable.
• Optional I/O cable tie-down post - use this tie-down post
to secure all I/O cables.
Power cable
tie-down post
Optional I/O cable
tie-down post
Figure 14: Cable tie-down posts locations
2.5.3 Wiring the line power
The Sentinel LCT8 may be ordered for operation with a
power input of either 100-240 VAC or 12–32 VDC. The label on
the side of the electronics enclosure lists the required line
voltage and power rating for your unit. Be sure to connect
the Sentinel LCT8 to the specified line voltage only.
NOTE: For compliance with the North American and
European low voltage directive, 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 unit.
NOTE: Use one conduit inlet for the power cable, and use the
two remaining conduit inlets for any I/O cables as needed.
All unused conduit inlets should be sealed with suitable
blank plugs (see Figure 15 below).
Figure 15: Conduit inlet ports
See Figure 16 on page 11 or Figure 17 on page 11 to
locate terminal block TB1 and to connect the line power
as follows:
WARNING!
Improper connection of the line power
leads, or connecting a Sentinel LCT8 to the
incorrect line voltage, may damage the unit.
It may also result in hazardous voltages at
the meter body 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. Route the cable through one of three conduit inlet ports
(see Figure 15 above) and connect the line power leads
to terminal block TB1 , using the pin number assignments
shown in Figure 30 on page 17 and Figure 16 on page
11 or Figure 17 on page 11 .
Attention European customers!
To meet CE Mark requirements, all cables
must be installed as described in Appendix
A . CE Mark compliance and high noise
environments on page 111 .
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