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TW 3700 • TW 5550
11.
Now turn off the TW while it reads "Sys Restart" or after the display reads
"Chained n".
12.
Re-run steps 7 through 9 for each slave, incrementing the slave address each
time.
13.
The TW unit output and master sense conductors need to junction in one spot at
the "load junction terminal strip". This power strip should be sized to support the
wire gauge and ampacity for the number of TW units Master/Slaving.
14.
Attach the output wiring between each TW (master and slave(s)) and the load
junction terminal strip. All power wiring shall be of the same gauge (12,10,8
gauge, etc.) and the same length to facilitate current sharing among the TW
amplifier modules.
15.
Connect the sense wires between the TW master unit and the load junction
terminal strip. Take care to attach all phases and phase neutral leads to the
same junctions as per the drawings supplied here.
16.
Attach the slave cables between all TW units. There is no need to enforce daisy-
chaining or pay attention to the order or placement of the slave cables as long as
the slave(s) and the master are ultimately all connected together in some
manner.
17.
Connect the GPIB or RS232 control line to the master. As soon as a slave is
connected and talking with it's master, there will be no menu, RS232, or GPIB
operations available on the slave.
18.
If DFI connectors are being used for systems protection, connect the DFI daisy
chain through the master and all slaves.
19.
For model TW 5550, all outputs will be bussed A to A , B to B, C to C, and the
respective neutrals will be bussed AN, BN, CN to the load junction terminal strip.
The six sense lines from the master will also be connected to the same six nodes
on the junction strip. The load should be connected to the load junction terminal
strip with a wire gauge ample enough to obviate any voltage drop considerations.
20.
For model TW 3700, the C phase may be left disconnected.
21.
Apply power to all TW units. The slave(s) will self test and the fans will settle
down with the "Chained n" display on each slave front panel.
22.
The master TW will search for its slaves until all of the specified chassis are
found. If the chassis number specified was 3 then the master will search for
slave #1 and slave #2.
Elgar TrueWave
Operation
3-27
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