Description

The OP1490 boxes provide the following features to the OP1400 series test benches:

12V auxiliary supplies for the OP8110 amplifiers
Start/Stop button to activate or deactivate the 3 phase 400V/480V supply to the DC power supplies
Emergency stop interface to quickly isolate the test bench's power path (excluding monophasic power bars) from all energy sources

Functional Overview

Models

There are various models of the OP1490 box to meet the needs of the different models of OP1400 Series test benches. They are detailed in the table below:

Model no.	No. of 12V auxiliary supplies	E-STOP	Start/Stop	Note
OP1490-1	1	Yes	Yes	Used with test benches featuring 1 X OP8110-3
OP1490-2	2	Yes	Yes	Used with test benches featuring 1 X OP8110-6
OP1490-3	3	Yes	Yes	Used to supply 1 X OP8110-3 and 1 X OP8110-6
OP1490-4	3	No	No	Used to supply additional OP8110s when required

Controls and Indicators

Emergency Stop Button

The emergency stop button allows to quickly secure the test bench in urgent situations. It is hard wired to an emergency stop loop that energizes the contactors inside the OP1460/1480 boxes and inside the PDU. When the user pushes on the emergency stop button, all these contactors become unsupplied and this effectively isolates the test bench's power path (excluding monophasic power bars) from all possible sources of electrical energy. The button will remain depressed once it has been pushed down, the user must then rotate the button clockwise to reset the emergency stop loop. The emergency stop button can be secured with a padlock if desired.

Start/Stop Button

These buttons allow to control the 3 phase 400V/480V supply to the DC power supplies of the test bench. An indicator light located between the Start and Stop buttons lights up when activated.

Status LEDs

The status LEDs provide with the following visual information:

+12V PS_AUX1	This LED is lit when the 12V auxiliary supply #1 is functioning properly
+12V PS_AUX2	This LED is lit when the 12V auxiliary supply #2 is functioning properly
+12V PS_AUX3	This LED is lit when the 12V auxiliary supply #3 is functioning properly
+24V E-STOP	This LED is lit when the Emergency Stop loop is energized (meaning that the test bench is allowed to operate). When the emergency stop button is pressed down, the LED will turn OFF, indicating that the test bench is secured and isolated.

Fuses

User replaceable fuses to protect against overloading of the auxiliary supplies. Replace only with fuses that have the proper rating (as indicated on the equipment).

Electrical Schematic

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