Daisy-Chain Connection; Front Panel Locking; Gen30 - TDK-Lambda Genesys GEN8-300 User Manual

With local sensing it is important to minimize the wire
length and resistance. Also the positive and negative
wire resistance should be close as possible to each
other to achieve current balance between power
supplies.
-S
To J1-10
SLAVE#2
MASTER
POWER SUPPLY
POWER SUPPLY
J1-25
P
IPGM
J1-8 J1-12 J1-10
SLAVE#1
To J1-23
SLAVE#2
POWER SUPPLY
POWER SUPPLY
-S
NOTES
1.In parallel operation, the AC Supply should be applied
to the Master Unit first and then to the Slave unit.
2.The above sequence is not required if the units are
connected in daisy-chain.

5.16 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.5-6 shows connection of three units, however the same connection method applies to systems
with a larger number of units.
POWER SUPPLY
J1-2,3
IF_COM

5.17 FRONT PANEL LOCKING

The front panel controls can be locked to protect from accidental power supply parameter change.
Press and hold PREV button to toggle between "Locked front panel" and "Unlocked front panel".
The display will cycle between "LFP" and "UFP". Releasing the PREV button while one of the
modes is displayed, selects that mode.
5.17.1 Unlocked front panel
In this mode, the front panel controls are enable to program and monitor the power supply
parameters.
5.17.2 Locked front panel
In this mode the following front panel controls are disabled:
- VOLTAGE and CURRENT encoders.
- FOLD button.
- OUT button.
The power supply will not respond to attempts to use these controls. The VOLT display will show
"LFP" to indicate that the front panel is locked.
OVP/UVL button is active to preview the OVP and UVL setting.
Use PREV button to preview the output voltage and current setting or to unlock the front panel.
NOTE
+S
-S
Twisted
pair
+S
As short as possible
+ V
-
V
J1-12 COM
IPGM_RTN
J1-23
+
V
-
V
Fig.5-5: Parallel operation
+S
Twisted
pair
-S
+S
1. Bei Parallelbetrieb sollte zunächst das Master-Netzteil mit dem Netz
2. Bei "Daisy-chain" -Betrieb ist diese Abfolge nicht erforderlich.
POWER SUPPLY
1
#
J1-16 J1-2,3
J1-15
PS_OK SO IF_COM
Fig.5-6: Daisy-chain connection
Bei lokalem Sensing ist es wichtig, Länge und
Widerstand der Ausgangsleitungen möglichst gering zu
halten. Zudem sollten die Leitungswiderstände der Plus-
und Minus- Leitungen möglichst identisch sein, um eine
gleichmä ige Lastaufteilung unter den Netzteilen zu ß
erreichen.
+S
Twisted
pair
+
LOAD
-
-S
wiith Remote sensing
HINWEISE
verbunden werden, danach das Slave-Netzteil.
POWER SUPPLY
2
#
J1-15
J1-16 J1-2,3
PS_OK SO IF_COM
44
44
HINWEIS
CAUTION
Make sure that the connection
between -Vo terminals is reliable to
avoid disconnection during operation.
Disconnection may cause damage to
the power supply.
VORSICHT
Stellen Sie sicher, dass die
Verbindung zwischen den -V
Anchlussklemmen sich nicht
während des Betriebs lösen kann.
Eine Unterbrechung kann die
Netzteile beschädigen.
#3
J1-16 J1-15
PS_OK SO