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DF-C 63XXX & 61XXX Series User's Manual

Version 28.04.2019

4. Optional: Analogue In- / Outputs

Devices of the DF-C series can optionally be equipped with analogue inputs / outputs for setting and reading the

output parameters. The analogue outputs / inputs are accessible via a labeled terminal block which is located either

on the back, the front or behind the service door (depending on device model). The pin assignment is explained on the

terminal block for a simple and straight forward connection.

4.1 Optional: Ext. Output On/Off Ctrl. & Interlock

Input for controlling the status of the output of the laboratory power supply (on / off), switchable as "Interlock" or

external control. This input is configured as a two pin connection, a „true" state is triggered by shorting the two pins

and a „false" state is triggered by removing any connection between the two pins of the input.

This option can be configured as either an interlock input, which disables the output of the power supply if the state is

false, or as an external output status control which enables or disables the output of the power supply depending on

the control signal state (true = on/false = off) if the „Output On/Off" switch of the power supply is always in the ON

position.

4.2 Optional: Potential-free output / configurable output

The output of DF-C series devices in the basic version has a potential to PE, which follows the usual protection

regulations. All models can also be ordered in the following modifications (please see the „DF-C Series Function and

Wiring Diagram" PDF for details):

1). Configurable output without ELCB

The output of the power supply has no potential to the input (PE), so the output of the device has no protective earth

for loads that may require a PE connection and the load is not protected by a ELCB ! By bridging output N to input N,

the output can be pulled to the input potential, in this case input PE = output PE and the load is protected by the ELCB

installed in the operation environment (Laboratory).

2). Configurable output with built-in ELCB

The model with integrated ELCB offers the following switchable configurations:

A). Potential-free output with its own ELCB

Connections output

L (1, 2, 3): Phase (potential-free)

N: Neutral conductor (potential-free)

GND: In this configuration to use as PE connection for the load

Remark: ELCB triggers as soon as a residual current flows through the GND conductor.

Connections input

L1: Input phase 1

L2: Input phase 2

L3: Input phase 3

N: Neutral conductor

PE: Earth conductor

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