TDK-Lambda GH10-100 - Remote Programming in Series Operation

35
(*)
(*)
POWER
SUPPLY
+
-V
POWER
SUPPLY
-V
+V
-
+V
COM.
LOAD
(**)
Figure 2–6: Series Connection for Positive/Negative Output Voltages
(*) Diodes are user supplied.
(**) Optional ground connection.
2.10.3 Remote Programming in Series Operation
Programming by external voltage: The analog programming circuits of this power supply
are isolated from the output potentials. Therefore, the
circuits used to control each series connected unit don't
have to be separated and floated from each other.
Using the SO function and (\PS_OK_OUT)
signal:
DAISY_IN signal (J1-1) serves as Output Shut OFF (SO)
via daisy chain connection.
This signal is used only for the Daisy Chain application,
connected to DAISY_OUT signal (J1-2) of a master unit.
The signal is referenced to the isolated interface
(COM_SELV: J1-11, 12, 13, 14). The function is active
after initial high to low transition.
(\PS_OK_OUT) signal is Power Supply OK– Open
Collector type which indicates output status (DC
On/Off). The signal is referenced to the isolated
interface (COM_SELV: J1-11, 12, 13, 14). The
COM_SELV terminals of the units can be connected to
obtain a single control circuit for the power supplies
connected in series.
Programming by external resistor : Programming by external resistor is possible. Refer to
Section 3.5 for details.
Programming via communication ports
(RS232/RS485, USB, LAN and GPIB (IEEE)):
The Communication ports are referenced to the
COM_SELV, which is isolated from the power supply
output potential. Therefore, power supplies connected in
series can be chained using the Remote-In and Remote-
Out connectors. Refer to section 1.5 for details.