KOS1020 Isolator

This isolator requires no user adjustment during commissioning apart from an initial test to ensure it operates correctly over its full working range. Minor adjustments can be made to the calibration of the device by means of the two front panel accessible calibration potentiometers. Incorrect connections in the loop will not damage the device as long as the specified maximum current/voltages are not exceeded. If the isolator fails to operate check loop for bad connections. Ensure enough voltage is available in the loop to power the isolator. In the unlikely event of the isolator not working, it should be returned to the supplier to be repair or replaced.

Mechanical

This isolator is designed to be housed within a suitable enclosure that will provide protection from the external environment and ensure that the stated temperature and humidity ranges are not exceeded. The isolator case is designed to snap fit onto a standard "Top Hat" DIN rail. The isolator may be removed if required by applying pressure with one hand to the bottom face of the enclosure in a direction parallel with DIN rail and at the same time gripping the top of the isolator and pulling away from the rail. The isolator may be mounted in any orientation and stacked side by side along the rail.

Electrical

Connections to the isolator are made via screw terminals. Wire protector plates are provided inside each terminal. To maintain CE compliance tested pair (Screened) cables are recommended. It is also good practice to ensure that all 4-20mA loops are grounded at a single point in the loop. Before installation care must be taken to ensure enough voltage is available in the loop to drive the total loop load. Refer to the specifications listed above for the loop drop voltage. The KOS1020 in most applications require a separate supply for the secondary loop. this may be provided from a separate power supply or from the instrument monitoring the output loop.
Refer to the KOS1000 series data sheet for further information on applications of this series of isolators. Please note the isolation provided by this device is only suitable for providing isolation between two process signals and therefore must not be used to provide isolation from hazardous voltages such as mains supplies.

Description

The KOS1020 isolator is designed for use when power is available at both sides of the isolation barrier.