230VAC
1
2
3
4
5
6
1
2
3
4
5
6
7
230
VAC
Liftsafety
Circuit1,2
1
2
3
4
5
6
30
VAC
230
VAC
1
2
3
4
5
6
1
2
4
6
Cont
roll
erC
abi
net
+
+
-
-
Cont
roll
erC
abi
net
10
10
10
10
10
OSG
1
6
7
9
Liftsafety
CircuitP52
TerminalB
ox
4
1
2
5
6
am7423b
A
B
C
J
H
G
F
I
E
D
OSG
1 2
4 6
230VAC
30VAC
1
2
3 4
56
2 1
3
4
5
6
1
2
3
4
5
6
2 1
3
4
5
6
7
1
2
3
4
5
6
Lift safety
circuit
Controllerl cabinet
Travelling cable
Terminal
box
1
2
4
5
6
8
Lift safety
circuit
(
1
) Close the overspeed governor contact switch
(F) and put the power ON for EBRA20 230VAC
(G). The magnet closes and the brake opens.
(
2
) Remove the transport clamp (yellow) (H) from
the back side of the magnet (at the car roof)
(
3
) Check that EBRA20 magnet releases when
overspeed governor contact switch (F) is
opened and closes if after closing the
Overspeed governor contact switch the power
supply 230VAC (G) is switched OFF and ON.
Switching the power off, resets the time
circuit on the board.
Do not open the overspeed governor con-
tact switch (F) shortly after recycling the
EBRA20 (G) because there is 200VDC over
the overspeed governor contact switch
contacts and they may be burned if
opened. The voltage drops to about 30 VDC
in 2 seconds.
If there is battery backup:
(
4
) FIRST Switch battery OFF (J) then connect the
plugs (I) if loosen and switch (J) ON. Then
check that the battery voltage is about 24VDC
when the 230VAC power supply (G) is OFF.
Otherwise switch on the 230VAC (G) ON and
wait until batteries are charged.
(
5
) When battery voltage is about 24VDC, check
that the EBRA20 remains open even if the
power is cut from the 230 AC supply (G).
Otherwise, please contact us at WITTUR for
technical support.
(
6
) Leave the battery (J) ON after testing.
Blatt/
sheet
D7AJMGB.010
Datum/
date
23.05.2002
Stand/
version B-24.05.2005
Geprüft/
approved WAT/MZE
THE LMC LIFTCOMPONENTS MANUFACTURING AND COMMERCE COMPANY
Änderungen vorbehalten!
Subject to change without notice!
4
Adjustment tasks
Braking System EBRA20
Operating instruction
