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What are the conditions for closing the ATS48 R2 relay?

Published date: 14 August 2019

Issue:
When does the ATS48 R2 relay close?

Product Line:
Altistart 48

Environment:
All models

Cause:
None

Resolution:
The R2 relay is an End of Starting relay. It has a dedicated function to control a shorting contactor. It is not programmable. 
The relay contact is normally open and will close when the motor is up to full speed.
The conditions for R2 closure are:
- if CLP = OFF, relay closes when the thyristors are full wave (angle = 1): full voltage is being sent to the motor.
- if CLP = ON, relay closes when the thyristors are full wave (angle = 1) and the peak current estimated is less than 1.4 x In

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