CenterLine VeriFast LVDT, Руководство пользователя

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22
VeriFast
TM
LVDT – User Manual – FDP-VFA-LVD-UM-EL-1.15-0918
Connecting the Signal Conditioner to the 5-pin Shielded Cable and PLC
Table 1 – Wiring the Signal Conditioner
From 5-pin Shielded Cable to Signal Conditioner
(Marked as in Figure 3)
Pin Wire Color Terminal Description
1 Brown 3 (White) Primary coil 1
2 White 4 (White) Primary coil 2
3 Blue 7 (Red) Secondary coil 1
4 Black 8 (Red) Secondary coil 2
5 Grey + Shield 5 * (Red) Shield
From Signal Conditioner to PLC
(Marked as in Figure 3)
Terminal Description
1 (White) Syncronization
12 (Blue) Analog signal
15 * (Black) 0 V DC
16 (Black) 24 V DC
*
Terminals 5 (shield), 11, and 15 (0 V DC) are internally connected.
Note: For a complete list of all Signal Conditioner electrical connections, see Complete
Signal Conditioner Electrical Connections on page 44 ( Appendix A ).
Synchronizing Multiple Signal Conditioners
When multiple Signal Conditioners are mounted in close proximity to each other, interference
may occur between them because of differences in excitation frequency. This interference may
produce noise on the voltage outputs. In order to prevent this from occurring, the VeriFast LVDT
Signal Conditioners must be synchronized with each other.
Synchronization of VeriFast LVDT Signal Conditioners is accomplished by connecting the
SYNC I/O terminals of each unit into a daisy chain (terminal 1). One unit will automatically
assume Master Mode when connected properly with other units.
Once one unit becomes Master, all other units enter Slave Mode. If the current Master ceases
to function, the next consecutively connected unit enters Master Mode without user intervention.
If a unit is hot swapped or reconnected, it will enter Slave Mode. In an interconnected group of
units, one and only one unit is guaranteed to be Master.
Synchronization mode is indicated by the ‘+’ (Yellow) LED for Slave Mode, and the NULL
(Green) LED for Master Mode (see Table 3 – Operation of the LED indicators for reference).
Connecting the 5-pin Shielded Cable/Connector to the VeriFast LVDT Electrode
IMPORTANT : This connection (circled red and marked as
in Figure 3) is established by
CenterLine. Use the information in Table 2 for troubleshooting purposes only.
Table 2 – Connecting the VeriFast LVDT to the 5-pin Shielded Cable/Connector
VeriFast LVDT to 5-pin Shielded Cable
(Marked as in Figure 3)
Wire Color Terminal Description
Brown 1 Primary coil 1
Yellow 2 Primary coil 2
Red 3 Secondary coil 1
Black 4 Secondary coil 2
Shield 5 Shield