MPRC speed display
MPRC Speed Display. Used to indicate the speed of the step band of an escalator. By measuring the rotational speed of the escalator drive while taking the gear ratio into account, the current speed is shown in m/s.
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MPRC Speed Display
The MPRC speed display is used to indicate the speed of the step band of an escalator. By measuring the rotational speed of the escalator drive while taking the gear ratio into account, the current speed is shown in m/s. The MPRC receives its speed information from the cams mounted on the flywheel of the escalator motor. With the aid of inductive proximity switches, pulses are generated that serve to monitor the rotational speed of the escalator. The pulses generated are first fed to the RC3 speed monitor for speed monitoring in accordance with EN115.
Features
- speed display taking the gear ratio into account
- speed indicated in m/s
- compatible with the RC3 speed monitor
- compact design
Areas of application
Field of use
The MPRC speed display shows the current speed of the step band of an escalator in m/s. It supports service and commissioning when checking the escalator speed.
Operating principle
The MPRC receives its speed information from cams on the flywheel of the escalator motor, which generate pulses via inductive proximity switches. Taking the gear ratio into account, the speed in m/s is calculated from these pulses and displayed. The pulses are also fed to the RC3 speed monitor for speed monitoring in accordance with EN 115.
Installation
- Mount the MPRC on a DIN top-hat rail using the fastening clip.
- Connect the pulse signal of the inductive proximity switches.
- Set the gear ratio parameter so that the speed is displayed correctly in m/s.
Good to know
The MPRC is compatible with the RC3 speed monitor and can be integrated into existing monitoring systems.
Important notes
- Compatible with the RC3 speed monitor.
- Installation/connection only by trained personnel and when de-energised.
Technical Data
| Parameter | Value |
|---|---|
| Operating voltage | 18 … 28 V |
| Power consumption | max. 0.8 W |
| Display at fnom = 66 2/3 Hz | |
| Setting 9.46 mm / pulse | 0.63 m/s |
| Setting 9.46 mm / pulse | 0.48 m/s |
| Ionmax | 60 mA |
| Ionrevmax | 60 mA |
| max. continuous current for pulse input | 60 mA |
