Daisy-Chain Connection - Delta D750 User Manual

User Manual
D750
DC Power Supply
Make sure that the connection between –Vo terminals is reliable to avoid disconnection
during operation. Disconnection may cause damage to the power supply.

3.4.3 Daisy-Chain Connection

It is possible to configure a multiple power supply system to shut down all the units when a
fault condition occurs in one of the units. When the fault is removed, the system recovers
according to its setting to Safe start mode or Automatic restart.
Setup switch SW1 position 5 should be set to its Down position to enable the Daisy-chain
operation. Other SW1 positions can be set according to the application requirements.
If a fault occurs in one of the units its PS_OK signal will be set to low level and the display
will indicate the fault. The other units will shut off and their display will indicate "SO". When
the fault condition is removed, the units will recover to their last setting according to their
Safe start or Auto-restart setting. Fig.3-10 shows connection of three units, however the
same connection method applies to systems with a larger number of units.
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POWER SUPPLY
#1
J1-2,3 J1-16 J1-15
IF_COM PS_OK SO
Fig.3-10: Daisy-chain connection
CAUTION
POWER SUPPLY
#2
J1-2,3 J1-16 J1-15
IF_COM PS_OK SO
POWER SUPPLY
#3
J1-2,3 J1-16 J1-15
IF_COM PS_OK SO