Änderungen vorbehalten!
Subject to change without notice!
Blatt/
sheet
PM.7.002883.EN.47
Datum/
date
23.01.2013
Stand/
version
C-13.10.2014
Geprüft/
approved
WAT/MZE
Overspeed governor EOS
Operating instructions
The test described in this chapter can be performed
optional to the procedure described in 5.2.
The function of opening the safety circuit
has to be checked in both directions of
movement - even with uni-directional gov-
ernor.
Trigger testing is a
dynamic functions test
that can
be carried out with or without the lift car rated
load.
Nobody is allowed to be inside the lift car
during test runs or functions tests!
Governor test
with overspeed
:
•
Power-on of the EOS and apply RESET signal if
necessary:
See also chapter 4.3.4!
The LEDs are as follows:
“POWER”
˜
LED on
“CHANGE UNIT”
™
LED off
“TTS1”
™
LED off
“TTS2”
™
LED off
“SAFETY”
˜
LED on
“COIL”
˜
LED on
•
Load the car (e.g. 100% of rated load) that the
elevator starts moving in direction of activation
(e.g. downwards) while the brake is kept open
manually.
Ensure that the resulting acceleration is
below the governor’s tripping acceleration! -
Otherwise the tripping acceleration’s value is
tested and not tripping speed.
Make sure that the free hoistway is long enough!
• The elevator will accelerate up to tripping
speed.
•
Then the governor trips (both coils simultane-
ously!) and engages the safety gears and causes
the elevator to stop.
“SAFETY”
™
LED off
“COIL”
™
LED off
•
The safety circuit is opened.
•
Drive the car out of safety gears
slowly
(e.g.
with service speed; vertical car distance
~5 cm;
stop then
).
•
RESET-input on (momentary switch): Coils are
powered
“SAFETY”
˜
LED on
“COIL”
˜
LED on
•
Drive car completely out of safety gears
slowly
(e.g. with service speed).
•
The safety circuit is closed now and the gover-
nor wheel free to move. LED’s indication is like
after power on.
With gearless drives it is recommended to
increse the nominal speed above the tripping
speed. To prevent an electrical stop at trip-
ping speed, the electrical tripping gets
bridged when you send down the elevator.
Before reaching nominal speed, the EOS has
to activate the safety gear and the elevator
will stop.
Measure the tripping speed by means of a
tachometer!
Check the two-channel functionality with static
functions test acc. chapter 5.1
5.3 Overspeed functional testing
