64
83503001 Rev G
5.15.2.1.
Advanced Parallel Configuration.
a) SW1 position 2 - Down in the Master Supply and up in all Slave Supplies.
b) Connect a short between J1-8 and J1-12 in all Slave Supplies.
c) Connect J1-25 of the Master Supply to J1-10 of all Slave Supplies.
d) Connect J1 terminal 23 (IPGM-RTN) of the slave unit to J1 terminal 12
(COM) of master unit.
e) The following set up connections are optional but are strongly
recommended. These set up and connections will shut down all the parallel
power supplies when fault condition occurs in any one of them.
f)
Switch SW1 position 5 should be in its down position for all power supplies
(See Fig. 5.6).
g) Connect J1-16 of the Master Supply to J1-15 of the ‘First’ Slave Supply.
h) Connect J1-16 of the ‘First’ Slave Supply to J1-15 of the ‘Second’ Slave
Supply (if any)
i)
Connect J1-16 of the ‘Second’ Slave Supply to J1-15 of the ‘Third’ Slave
Supply (if any)
j)
Connect J1-16 of the ‘Last’ Slave Supply to J1-15 of the Master Supply
k) Connect J1-2 (or J1-3) common to all supplies (See fig. 5.6).
5.15.2.2. Connection to the Load
In parallel operation, power supplies can be connected in local or remote
sensing. Refer to Fig. 5-4 and 5-5 for typical connections of parallel power
supplies. The figures show connection of two units, however the same
connection method applies for up to 4 units.
5.15.2.3.
Setting the units as Master or Slave
a) Depress and hold the FINE button for 3 seconds. The Master/Slave
configuration will be displayed on the Current Display. Rotate the
CURRENT encoder to obtain the desired mode. Refer to Table 5-4 for the
CURRENT display and modes of operation.
CURRENT Display
Operating Mode
H1
Single supply (default)
H2
Master supply with 1 Slave supply
H3
Master supply with 2 Slave supplies
H4
Master supply with 3 Slave supplies
S
Slave supply
Table 5-4: Setting mode of operation
b) When the desired configuration is obtained, depress and release the FINE
button or wait approx. 5 seconds.
5.15.2.4.
Master and Slave Units Default Operation
a) When a unit is programmed to Slave mode it enters the Remote mode with
Local Lockout. In this mode, the front panel controls are disabled to prevent
accidental setting change (refer to Sec. 7.2.7 for details).
b) The Slave units parameters will automatically set the following:
Output voltage to approximately 102% of rated output voltage.
Programmed Current to zero.
UVL to zero volts
OVP to its maximum value
AST On
OUT On
Foldback protection Off
