Instruction manual

19
4.1.
RS485 Interface Connector
The RJ-11 connectors for the RS485 serial interface are located on
the back of the power supply and are labeled SHARE “A” and “B”.
See figure 3. Parallel units must be connected together in a daisy-
chain manner with a RJ-11 4-wire straight-through cable.. A short (4
inch) RJ-11 connector cable suitable for interconnecting stacked
power supplies is available from ICT, part number “ICT-JMP”.
(Figure 3 Back panel SHARE connections)
4.2. Configuring the Power Supplies for Parallel
Operation
Before connecting the power supplies together, they should all be
configured for parallel operation. To do this:
1. Power each unit up independently. In the Control Panel menu,
scroll to the Parallel Settings
screen and press Enter.
2.
Scroll to the Parallel Mode
setting and press Enter. Scroll and
choose a parallel mode setting, then press Enter
. One unit must
be configured as a Master
, and the remaining units must be set
to Slave
. If more than one unit is configured as a Master, the
units will not operate in parallel correctly.
Since the Slave units will be controlled by the Master, set the unit
you would like to use to set the Output Voltage and Current Limit
as the Master unit. You will be unable to set the Output Voltage
or Current Limit from any of the Slave units once they are
configured as Slaves.
3. Scroll to the Device ID
setting and press Enter. Scroll and choose
a unique device ID number for each unit, then press Enter
. If
more than one unit is assigned the same device ID number, the
units will not operate in parallel correctly.