KOS1200 Double 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 potentiometers. Incorrect connection in the loop will not damage the device as long as the specified maximum currents/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 for repair or replacement.

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 twisted 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 KOS1200 in most applications, requires separate power supplies for the secondary loops, these may be provided from separate power supplies or from the instrument monitoring the output loop.
Refer to the KOS1000 series datasheet for further information on applications of this series of isolators. Please note that 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 main supplies.