User Connections 71
Loads óLoad Connection ìAnalog Connector
A Connect for remote sensing (optional)
B Connect for local sensing (default)
Figure 4-4d. Series 667x
A
Multiple Load Connection (Remote Sensing Optional)
Connecting Supplies in Auto-Parallel
Auto-Parallel Wiring (Figure 4-4e). Figure 4-4e illustrates how power supplies can be connected in auto-parallel for
increased current output. You can connect up to five supplies of the same model.
Use load leads of a sufficient wire size so that the absolute voltage difference between the + output terminal of the "master"
supply and the + output terminal of the first "slave" supply is kept under 2 V at rated current. This also applies to the
voltage difference between the + output terminals of the first and second slave supplies. If remote sensing is required,
connect the load to the remote sense terminals of the master supply, as shown by the dashed lines in Figure 4-4e.
Analog Connector ó Slave Supply ì Master Supply
öProgram only the master. Set slave output and OVP voltage slightly higher than the master to ensure that slave stays in
CC mode
ú Load
÷ Load Connection
A Only local sensing permitted
B Connect for optional remote sensing
Figure 4-4e. Series 667xA Auto-Parallel Connection (Remote Sensing Optional)