AMETEK ASD Series - Manual (Page 55)

Sorensen ASD Series Operation
M551177-01 Rev A 3-17
3.9 PARALLEL AND SERIES OPERATION
The following modes of operation are used for applications requiring more
current or voltage than is available from a single power supply. To meet
the requirements for greater output voltage or current, two supplies may
be connected in series (Section 3.9.3), or up to ten power supplies can be
connected in parallel (Section 3.9.1).
Another option may be to connect an ASD unit with an SGA unit in parallel
when requiring greater output current than a single power supply can
provide (Section 3.9.2).
3.9.1 PARALLEL OPERATION
In order to connect up to ten power supplies in parallel, use a daisy-chain
wiring configuration as follows (refer to Figure 3-21):
(Note that there are two separate RJ-45 connectors on the upper left rear
panel of each power supply, marked INTERFACE #1 “PAR OUT” and
“PAR IN”).
1. Beginning with the power supply designated (by you) to have the
active master controller, use an interface cable ( Shielded CAT 5
cable) to connect the PAR OUT connector on the designated
active master controller to the PAR IN connector on the second
power supply (unit 2).
2. On the second power supply (unit 2), use another interface cable
to connect the PAR OUT connector to the third power supply’s
(unit 3) PAR IN connector. Continue these interconnections up to a
maximum of 10 power supplies.
3. Install the bus termination on both ends of the group, the first and
last unit, which are provided with the units. On the first unit install
on “PAR IN” and on the last unit install on “PAR OUT” of
INTERFACE #1.
4. Connect the Positive output terminals of all the power supplies and
the Load.
5. Connect the Negative output terminals of all the power supplies
and the load.
6. Confirm that there are no shorts between the Positive and
Negative output terminals.
7. Referring to Figure 3-21, connect twisted pair cables as follows:
For Remote Sense, the active master controller shall have a twisted pair from
its own SENSE terminals to the Load’s output terminals.
For Local Sense, the active master controller shall have a twisted pair from its
own SENSE terminals to its own output terminals.
Ensure that all twisted pair cables are as short as possible.