OPERATING MANUAL
ES300
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DELTA ELEKTRONIKA B.V.
rev. Sept. 2019
an advantage. Other advantages are the fast and easy way of
connecting.
First, connect output terminals and test system in normal
series operation. Ensure that all (output) power connections
are reliable.
Second, switch off all units. Connect units as shown in fig. 3 -
6. Use standard 15 pole (1:1) shielded cables. Both prog.
switches of the slave(s) should be in the position PROGRAM.
The max. number of slaves is only limited by the max. total
voltage of 600 V.
3.8 MASTER / SLAVE PARALLEL OPERATION
Note: Master / Slave parallel is not recommended for more
than 4 units, consult factory for using more than 4 power
supplies in parallel.
First connect output terminals and test system in normal
parallel operation. Ensure that all power connections are
reliable. An interruption of one of the (output) power leads can
cause a fuse to blow in the unit, see next chapter “trouble
shooting”.
Second, switch off all units. Plug in prog. connectors with the
connections according to fig. 3 - 7 (bus bar topology). Always
use a shielded cable. The shielding must be connected to the
case of the supply. Both prog. switches of the slaves should
be in the position PROGRAM.
The purpose of the link between pin 9 and 11 is to set the
voltage limit of the slaves at maximum.
Keep the load close to the master. Keep wiring between
master and slaves short. The voltage drop between a unit and
the buss bar should be kept < 10mV.
Accidental interruption of a negative load lead of a unit during
operation will cause fuse F400 to blow, see section ‘trouble
shooting’.
3.9 OPERATING AND STORAGE CONDITIONS
3.9.1 TEMPERATURE
The operating temperature range at full load is -20 to +50 °C.
Please note: a lower temperature extends the life of the
power supply.
The storage temperature range is -40 to +85 °C.
3.9.2 HUMIDITY
During normal operation humidity will not harm the power
supply, provided the air is not aggressive.
The heat normally produced in the power supply will keep it
dry.
Condensation. Avoid condensation inside the power supply,
break-down could be the result. Condensation can occur
during a period the power supply is switched off (or operating
at no load) and the ambient temperature is increasing .
Always allow the power supply to dry before switching it on
again.
3.9.3 GALVANIC INDUSTRY
For using the power supplies in the galvanic industry it is
strongly recommended to take precautions against an
aggressive environment.
An aggressive environment with acid, salt, etc. can harm the
electronic components. Sometimes even the copper traces of
the pc-boards dissolve.
To avoid problems the power supplies should be mounted in
a relative clean room, or mounted in a cabinet receiving clean
air with over pressure. Or in a cabinet with a heat exchanger.
