Switching Off - Mayr ROBA-stop-Z Instructions De Montage Et De Mise En Service

Installation and Operating Instruction for ROBA-stop
Dual Circuit Fail Safe Brake Type 892.10_.0
Sizes 60 – 2000
Noise damping (17)
Attention
The noise damping is adjusted at the factory.
An adjustment is only possible by specialists.
Temperature sensor (9)
ROBA-stop
-Z dual circuit fail safe brakes are supplied with a
PTC sensor (DIN 44081/44082).
The temperature monitoring or signal evaluation is made via a
posistor tripping device attached by the customer.
(Connection: brake cable leads grey/grey).
If the brake is used as part of the protective device for the
ascending elevator cage against an overspeed (inspected design
ABV 547) or as brake for theatre and stage applications, an
evaluation of the PTC-sensor in the elevator range must be
made by the customer. For the theatre and stage applications
the signal must only be evaluated, if the starting torque of the
drive motor is bigger than the complete torque of the motor.
Electric connection of the brake
Operating voltage of the coil:
The D.C. current according to DIN IEC 038 is indicated on the Type
tag. Additionally it is stamped on the brake body (2).
This current can be generated via rectifiers (half-wave or bridge
rectifiers) as well as D.C. supply units.
The conection is made via a four-conductor cable.
Four conductor cable connection
Wires: blue and brown Coil connection (operating voltage).
Wires: grey and grey Connection of the fitted posistor.
Attention!
There must not be any voltage!
=> Damage of the coil.
Earthing:
The dual circuit brake is designed for protection class I, i.e. a well
conductive connection of all conductive elements is to be arranged
with the earthed conductor.
The earth connection (marked) is attached on the brake body (2)
which must be made via an M4-cap screw. It has to be observed that
all contact faces are bare and well conductive.
ON/OFF – switching of the brake
Important!
The operating performance of the brake depends on the used kind of
wiring. Therefore the following kind of wirings must be observed
Chr. Mayr GmbH + Co. KG
Eichenstraße 1
D-87665 Mauerstetten
Germany
Switching-ON
Switching-ON is either made on the AC current side with the
switch S3 and a bridge via the terminals 3 and 4
(in this case there are no switches S1 and S2)
or
on the AC and DC current sides with the switches S1 and S2
(in this case there is no switch S3).
ROBA -switch fast actring rectifiers with overexcitation voltage for
example can be used to achieve fast release times (disconnection
times). In this case the brake is energised within an adjustable
overexcitation time (up to max. 2 secs.) with a higher operating
voltage allowing a faster release of the brake. As soon as the
overexcitation time has passed the brake is energised with the coil
voltage.
Switching-OFF
On the AC current side with the switch S3 and a bridge over the
terminals 3 and 4.
Observe!
Application for standard operation of the elevator.
¡
Silent switching, but longer engaging time of the brake
¡
(approx. 6-8 times longer than with switching-OFF on the DC
current side).
Switching-OFF
On the DC current side with the switches S1 and S2
Observe!
Noisy switching – but short engaging time of the brake.
¢
Application for emergency-stop operation!
¢
Important!
In case of switching-OFF on the D.C. current side the coil must be
protected against transient overvoltages by means of suitable
protective wiring according to VDE 0580.
Miniature Fuse F1
A miniature fuse for protection against short circuits must be provided
in the supply mains by the customer.
Switching example (Fig. 4)
Notice!
The half-wave rectifier shown on Fig. 4 can be taken as switching
example and can be replaced by others, as for example bridge
rectifiers, ROBA -switch fast acting rectifier, powr supply units.
The fuse size must be adapted to the corresponding brake size.
Half-wave rectifier
1 2
Fuse
F1
AC
Telephone 08341/804-241+242
Telefax 08341/804-422
http://www.mayr.de
E-Mail: info@mayr.de
Page 6 of 10
®
-Z
3 4
S2
S1
S1 and S2 DC current switching
S3
S3 AC current switching
F1 external fuse
AC mains supply
(Example) Fig. 4
(B.8.2.0.GB)
5 6
Coil brake
15/05/2003 TK/Kr