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 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 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.
