TDK Genesys User Manual page 64

6.2.3. Setting up the Slave Units
The slaves must always run in constant current (CC) mode. This is ensured by always
setting the slave's voltage limit higher than the actual output voltage and letting the J1-10
IPGM signal regulate their current setting.
The following settings are used on the slave supply:
a) SW1 pole 2 is UP (on rear panel). This enables remote analog current programming.
b) SW1 pole 1 is DOWN. Remote voltage programming is not allowed for a slave.
c) SW1 pole 3 is DOWN. The slave current limit is a 0 to 5 volt signal from the master.
d) Connect short between J1-8 and J1-12 (refer to Table 4-4).
e) Connect J1-10 (IPGM) of the slave unit to J1-25 (P) of the master unit.
During operation the slave units operate as a controlled current source following
the master output current. It is recommended that the power system is designed
so that each unit supplies less than 100% of its current rating because of the
imbalance which may be caused by cabling and connections voltage drop.
6.2.4. Setting Over Voltage Protection (OVP)
The master unit OVP should be programmed to the desired OVP level. The OVP of the
slave units should be programmed to a higher value than the master OVP. This prevents
the slave from shutting down before the master does.
Where there is a risk from over voltages, it is recommended to use a Shut-Off daisy chain
(see section TBD) so all power supplies will turn off together.
6.2.5. Setting Foldback Protection (FB)
For systems using a constant voltage (CV) regulated load, foldback protection is
recommended as a protection from accidental short circuits. The foldback protection may
only be set in the master supply. If the master shuts down, it programs the slave units to
zero output voltage.
Failing to set the slave supply voltage setting high enough will cause
the slave to go into constant voltage (CV) mode. When this happens,
current will no longer be equally shared between the parallel supplies.
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