Änderungen vorbehalten!
Subject to change without notice!
Blatt/
sheet
PM.7.002883.EN.50
Datum/
date
23.01.2013
Stand/
version
C-13.10.2014
Geprüft/
approved
WAT/MZE
Overspeed governor EOS
Operating instructions
5.5
Testing the UCM-function (optional)
The UCM functionality of the EOS and the system
has to be checked periodically together with the
periodical inspection of the elevator done by noti-
fied body. If the EOS is operated with the EOS
Electronic Interface, the following test instruction
can be used. Otherwise, an appropriate test proce-
dure has to be created by the designer of the system.
Step 1:
Check the function of the EOS as mentioned
in chapter 5.
Step 2 for elevators with machine room:
Checking
of the UCM System (EOS and braking element):
Put the elevator in a normal operating condition.
Open the doors at the landing next to the top land-
ing and keep it open. By this the signals ENM1 und
ENM2 of the EOS should go inactive. This can be
checked by watching the LEDs ENM1 and ENM2 on
the EOS electronic interface.
Now disconnect the signals ENM1 and ENM2 by
unplugging the plug X4 from the EOS-electronic
interface and then close the door.
Send the elevator with disconnected plug X4 and
without load upwards to the top landing. It should
be stopped by the UCM function.
Because of the disconnected signals, the UCM func-
tion of the EOS remains active after a landing call,
even if the doors are closed. The EOS interpretes the
following movement of the cabine as an uncon-
trolled car movement. After reaching the defined
position or speed limits the EOS should stop the
movement by opening the safety circuit and activat-
ing the braking element.
To check the propper function of the braking
element, keep the motor brake manually
open. (This is not valid if the motor brake is
the UCM-braking element)
It is not allowed to test if the braking ele-
ment grips by using releveling control or
hand wheel, unless it is mentioned in the
manual of the braking element.
Measure the distance from the landing sill to the
cabin floor. It has to be below a value defined by the
designer of the UCM-system.
The same test has to be done also in down-
ward direction with rated load from the
landing next to the lowest landing.
Note down the brake distance for both direcions and
store it with the lift documentation.
For periodical tests only the upward direction with
empty car has to be tested.
The resulting stopping distances are dependent on
the acceleration, the maximum speed of the elevator
and the used braking element. Therefore the design-
er of the UCM-system has to deliver a diagram or
table where the maximum tolerated braking distance
depending on elevator speed and acceleration is
shown.
After this test connect ENM1 and ENM2 to
the EOS again!
