TDK Lambda | Z+Low Voltage User Manual

5.6 Daisy-Chain Connection It is possible to configure a multiple power supply system to shut down all units when a fault condition occurs in one of the units. When the fault is removed, the system recovers according to a preset state: Safe start mode or Automatic restart. Set signal ” SO ” to positive logic via Front panel (refer to section 5.7.1) . If a fault occurs in one of the units it’s ”PS_OK”signal will be set to low level and the display will indicate the fault. The other units will shut off and their displays will indicate ” SO ”. When the fault condition is removed, the units will recover to their last setting according to their respective Safe start or Auto-restart setting. Fig.5-6 shows connection of three units, however the same connectionmethod applies to systems with more units.

POWE R S UP P LY #2

POWE R S UP P LY #3

POWE R S UP P LY #1

J 3-7

J 3-5

J 3-7

J 3-5

J 3-7

J 3-5

J 3-2

J 3-2

J 3-2

IFC _COM

P S _OK

IFC _COM

P S _OK

IFC _COM

P S _OK

S O

S O

S O

Fig.5-6: Daisy-Chain connection

5.7 Rear Panel (J3 Connector) Functions and Settings Subsystem Level Display Function Level Display Parameter Level

Display

Description

Enable/Disable interlock function (Analog ON/OFF) Positive (polarity) same as PS_OK signal

Enable (ON)

N

Interlock



Disable (OFF)



Positive



Shut OFF



Negative



Rear Panel

.

High



Programmed PIN 1



Open collector

Low



High



Programmed PIN 2



Open collector

Low



Table 5-3: Rear panel subsystem menu

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