Cameron Scanner 2000 microEFM, Руководство пользователя по оборудованию

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61
Scanner
®
2000 microEFM Section 3
Section 3—Wiring the Scanner 2000
Field Wiring Connections
!
WARNING: Do not connect/disconnect equipment or change batteries unless the area is known
to be non-hazardous. The Scanner 2000 poses no hazard when opened in a safe area.
CAUTION All field wiring must conform to the National Electrical Code, NFPA 70, Article 501-4(b)
for installations within the United States or the Canadian Electric Code for installations
within Canada. Local wiring ordinances may also apply. All field wiring must be rated for
temperatures of 90°C or higher, and have a wire range of 22 to 14 AWG. Terminal block
screws must be tightened to a minimum torque of 5 to 7 in-lbs. to secure the wiring
within the terminal block. Only personnel who are experienced with field wiring should
perform these procedures.
To wire the Scanner 2000 for operation, complete the following field connections:
1. Unscrew the cover of the enclosure counter-clockwise until it separates from the main body of the enclo
-
sure.
2. Using a small standard blade screwdriver, remove the two #4-40 × 7/8” screws located to the right and
left side of the display.
3. Lift the display/keypad assembly from the enclosure, making sure the circuit assembly does not contact
the enclosure.
4. Connect the lithium battery to the J1 connector on the circuit assembly. See Figure 3.2, page 63 .
5. Connect wiring for external power, if appropriate. See Grounding Procedures, page 62 , and see Figure 3.3,
page 64 for a wiring diagram.
6. Connect the flowmeter input wiring to terminal block TB2, if appropriate. See Figure 3.4, page 65 .
7. Connect the process temperature input wiring to terminal block TB2, if appropriate. See Figure 3.5, page
66 .
8. Connect wiring for output signals, if appropriate. See Figure 3.6, page 67, Figure 3.7, page 68 , and Figure
3.8, page 69 . If the instrument is equipped with an expansion board, connect wiring for expansion board
inputs/outputs, if appropriate. See page A-10 for expansion board wiring diagrams.
9. Place the circuit assembly over the standoffs and fasten with the two #4-40 × 7/8” screws, ensuring that
all connector wiring is inside the enclosure and in no position where it may be damaged when the enclo-
sure cover is replaced.
10. Recalibrate the Scanner 2000 (if necessary).
11.
If external and internal power supplies were removed, reset the clock to ensure that the time stamps in the
log data are accurate. The clock can be reset using the instrument keypad or ModWorX™ Pro software.
12. Replace the enclosure cover by threading it onto the enclosure in a clockwise direction.