Instruction manual

18
4. SMART PARALLEL OPERATION
If your load requires more power than can be supplied by a single
ICT Digital Series power supply, two or more power supplies
(maximum 6) of the same output voltage rating can be connected in
parallel in a Master-Slave configuration to increase the power
available, provided the TCP/IP Ethernet Option is installed
WARNING!
Do not use the Battery Backup/LVD option “BAT” terminal on
units connected in parallel, as there is a risk that the potential
current could be higher than the rating of the internal low
voltage disconnect relay.
Otherwise damage to the unit, load, and/or personal injury may
occur if the battery output current through the BAT terminal
exceeds the rating for an individual supply.
CAUTION!
Do not connect power supplies of different output voltage
ratings in parallel, as this may cause damage to equipment or
connected load.
Up to six power supplies of the same output voltage rating can be connected
in parallel to provide up to six times the total output power capability. An
optional bus bar set (ICT-PAR) is available to simplify connection of two
units in parallel. When multiple power supplies are operating in parallel,
they should all be connected together through the RS485 SHARE interface
(included as part of the “Ethernet Option”), which will allow the units to
share output current more equally, and allow for external network
connection for the combined units using a single Ethernet port. One of the
units will operate as a Master, and the remaining units are Slaves. The Slave
unit’s settings will be controlled by the Master.
Each unit displays its own output current and voltage on the System
Status screen in the Control Panel menu.
If you are running a single, standalone power supply, the Parallel
Mode setting must be set to Standalone.