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AT0-11-24DFT-ZBZ/X

Spring-power activated interlock switch (power required to deactivate interlock) • with interlock monitoring and auxiliary release mechanism • monitoring of door position: continuous
Contacts		Voltage	Contact Sequence
Normally Open	Normally Closed
1	1	24 V DC

AT0-...-ZBZ/X, Dimensions and Data
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AT0..-ZBZ	Actuators for combination with the AT0...-ZBZ/X basic units
AT0..-ZBZ	G-ZBZ	W-ZBZ	F-ZBZ	FG-ZBZ	NG-ZBZ	NW-ZBZ

	Straight actuator for sliding doors	Angled actuator for swing doors ≥ 250 mm width	Angled flexible actuator for doors which do not close precisely	Straight flexible actuator for doors which do not close precisely	Straight actuator with overlap, with increased tolerance in the direction of closing	Angled actuator with overlap, with increased tolerance in the direction of closing

The operating head can be turned manually in 90 ° stages to match the specified plane of actuation.	The spring-powered AT0-..-...FT-ZBZ is equipped with a release mechanism which can be accessed with a screwdriver to deactivate the interlock in the event of a power loss (e.g. during start-up). This auxiliary release mechanism must be sealed during normal operation!
For degree of protection IP 65, use cable gland M20 with a maximum connection thread length of 9.5mm (V-M20)

Interlock Activated	Interlock Deactivated	Door Open


Door closed and interlocked	Requires no power: interlock also remains active under power loss or wire breakage Interlocked door = safe state N.C. enabling contact 21-22 is closed and allows an operation e.g. machine run, to start
To release door (deactivate interlock)	Apply voltage to the coil (A1, A2), e.g. from a motion detector. The N.C. enabling contact 21-22 opens. The N.C. door monitoring contact 11-12 remains closed as long as the door remains closed.
Opening the door	Only possible once it is released. The N.C. door monitoring contact 11-12 opens to indicate the open door.
Re-closing the door	Both contacts are blocked open, even where attempts are made to tamper using basic tools
To interlock door	Triple-coded actuator removes the block on the N.C. enabling contact 21-22. The N.C. door monitoring contact 11-12 re-closes. Remove voltage from coil: 1. Actuator is locked in. 2. The N.C. enabling contact 21-22 closes. The enabling contact can only close when the door is interlocked