Rotation speed monitor 1-channel MS24-112-R

Rotation speed monitor 1-channel MS24-112-R

The rotation speed monitor MS24-112-R is
controlled via 3-wire pnp sensors, sensors
acc. to EN 60947-5-6 (I) or signal sources with
pulse levels of 10…30 VDC.
Bridging terminals 7 and 8 activates the overspeed monitoring mode. In case of rotation
speeds above the adjusted limit value, the relay is de-energized. Without bridging, the device works inunderspeed monitoring mode.
In the case of rotation speeds below the set
limit value, the relay is connected. The device features three overlapping measuring
ranges and can thus easily be disconnected to adapt to the corresponding application.
First, the measuring range is set with a threestep switch and then the switchpoint is fine
adjusted with the potentiometer on the front.
The switchpoint can be set during the start-up

Rotation speed monitor 1-channel MS24-112-R

phase with the test button at the front, without
having to switch off the output relay: As long
as the test button is being pressed, the output
relay remains energized.
To provide optimum response times for applications with relatively low speeds, the device
operates on the digital pulse principle.
The switching status of the output relay is indicated by a yellow LED and operational readyness by a green LED. Input pulses are indicated by the related yellow LED.
In overspeed monitoring mode a start-up delay can be programmed for the drive. During this period the limit value relay is energized, preventing this way underspeed indication and system shut-down during the startup phase. The start-up delay is activated via
a potential-free contact at the terminals 15/16
or by applying power to the bridged terminals
15/16.
■ Rotation speed monitoring for overspeed or underspeed
■ Monitoring range: 25 mHz…50 Hz (1.5…
3 000) min-1)
■ Line monitored for wire-break/short-circuit
■ Removable terminal blocks
■ One relay output as changeover contact
■ Start-up bypass, activatable
■ Complete galvanic isolation
■ Input reverse-polarity protected

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