Stand-still/speed relays monitor the rotation of drives to generate a control signal at zero speed or when a set speed is exceeded.
Prewired rail-mounted modules
Safety category 3 acc. to EN 954-1
Positively driven output contacts
Connection monitoring of the proximity switches
These modules have measuring circuits in redundant configuration with 2-channel control by proximity initiators, either as pnp or npn input. The thresholds are either fixed or can be adjusted up to 26000 IPM. Zero-speed monitors can also work without sensors by measuring the remanence voltage of the coasting motor and evaluating it at zero speed.
Release safety gate interlocks when the stationary condition of a dangerous movement is detected
Work with opened safeguard devices and reduced speed during the set-up mode of the machine