Änderungen vorbehalten!
Subject to change without notice!
Blatt/
sheet
PM.7.002883.EN.7
Datum/
date
23.01.2013
Stand/
version
23.01.2013
Geprüft/
approved
WAT/MZE
Overspeed governor EOS
Operating instructions
1.1.3 Remote trip and remote reset (TRIP /
RESET)
The rocker switch with the functions TRIP and RESET
is directly connected to the corresponding inputs of
the EOS.
1.1.4 Emergency power supply
(UPS)
After applying the supply voltage (230VAC), the
accumulator is automatically charged and then held
on charge and regularly tested. The POWER ON but-
ton lights up if the EOS is supplied.
In case of a power fail the EOS supply automatical-
ly switches to battery supply; POWER ON still lights
up. This state is maintained for 30 minutes. Then the
output voltage is switched off to conserve battery
power for an emergency rescue (POWER ON goes
off).
By pressing the POWER ON button the EOS supply is
switched on again. The POWER ON button lights up
and the EOS is powered up again. This state is main-
tained for 30 minutes again. Then the output volt-
age is switched off (POWER ON goes off).
1.1.5 Control of UCM function of the EOS
The inputs ENM1 and ENM2 of the EOS shall be con-
nected to the +24 V supply of the EOS in order to
disable the UCM-function of the EOS (to allow
movement of the car). This information is taken
from the safetycircuit, which usually has a different
voltage and electric potential than the EOS.
Therefore the EOS electronic interface has integra-
ted a galvanically isolated signal transduction from
K1, K2 to ENM1 (channel 1) and independently from
this signal also from K1, K2 to ENM2 (Channel 2) .
(See circuit diagram Chapter 4.1.3)
The states of the two inputs should always be the
same. The state of the inputs is indicated by two
LEDs near the connector X6 on the board of the EOS
Electronic Interface (see ENM1, ENM2 in chapter
4.8.5).
During a power fail the EOS remains active because
of the emergency power supply, but in most cases
the safety circuit won´t. This means that the signals
ENM1 and ENM2 will be inactive. To still be able to
perfom an emergency rescue the EMERGENCY RES-
CUE switch activates ENM1 and ENM2 and therefo-
re allows car movement to rescue trapped passen-
gers.
Since the EMERGENCY RESCUE switch deac-
tivates the safety function UCM, the switch
simultaneously opens the safety circuit to
stop the automatic operation of the lift in
this situation. During the emergency rescue,
however, it is the responsibilty of the rescu-
ing person to activate the UCM function by
resetting the switch to „0“ again before the
lift doors are opened!
1.1.6 Preventive tripping (optional)
The safety gear will also be engaged if the electron-
ics detect excessive car acceleration (e.g. free-fall)
even before tripping speed is exceeded.
