TD, TR & TS ELECTRONIC TIME DELAY UNITS

TD, TR & TS ELECTRONIC TIME DELAY UNITS

Description

The TD, TR and TS are solid state time delay units for use where machines do not come to an immediate stop.  The gate access key is held captive in the unit until the desired condition of the machine or process has been achieved.

The time delay (TD) is initiated by the insertion of a key that would normally be released from the operation of an isolator.  Therefore the time delay cannot start until the machine power has been shut off.  There is a facility to add an additional switch to a TD to prevent accidental start-up.

The remote start (TR) unit is initiated by an external supply, normally derived from an auxiliary contact on an isolator.  This would ensure that the time delay cannot start before the machine is switched off.  The TR unit simply automates the delay start process and removes the need to transfer a key.

The switch start (TS) unit is initiated by turning the integrated isolation switch which will simultaneously shut off the machine power.

The TD, TR and TS units uses a timer relay that provides a delay on energisation in accordance with VDE 0113-1, 11/98, EN 60204-1, EN 1088, 12/97 and IEC 204-1, 11/98

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TD ELECTRONIC TIME DELAY UNITS

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