MANUAL NCBM 01 Revision 14 11/06/2021
STEM S.r.l. via della Meccanica, 2 I-27010 Cura Carpignano- Pavia Italia Tel. +39 0382 583011 Fax +39 0382 583058 www.stemsrl.it [email protected]
Subject to change without notice, no responsibility will be taken for every detail. © STEM S.r.l.
NCBM 01
1 Introduction
The control unit NCBM 01 can be used to realize the automatic monitoring
systems of a built in redundancy devices , as requested by EN81-20 against
uncontrolled movement.
For the hydraulic elevators:
NCBM01 allows to periodically monitor the functioning of the two down
direction valves, connected in series and controlled in sync.
It also permits the control the activation ad deactivation phase of the single
additional valves.
For traction lift with brakes:
NCBM01 allows to monitor the brakes of gearless/geared machine controlling at
each lift travel the safety micro switches mounted on the brake.
For traction lifts with uncontrolled movement device on the OSG(over speed
governor)
:
NCBM01 allows to monitor the proper functioning of the blocking element
(electromagnet) installed on the OSG
All the stopping element : down direction valves, electrical brakes and the OSG
must be certified.
Main features:
•
activation of an output relay, in case of failure of the test.
•
Reset button to manually restore the normal operation of the device
after alarm activation
•
HW redundant circuitry
of the micro-controller section that will activate the alarm relay in the case
where the test has not been performed within 38 hours.
•
internal clock to the time configuration of the test (e.g. during the night).
•
Hour configuration using a button
•
6 LEDs to signalize alarms and operating status
•
USB port and software application for configuring the unit allowing maximum flexibility to insert test
and operational parameters.
During electrical cabinet assembly a fast parameter download is possible selecting the appropriate file
