WARNER ELECTRIC EUROPE - Rue Champfleur, B.P. 20095, F - 49182 St Barthélemy d’Anjou Cedex
SM354gb - rev 01/06
4/5
4
Maintenance
4.1
Adjusting the airgap
Reminder :
This brake is intended for a static
application as a safety brake. Any dynamic braking
is restricted to emergency and test braking. Normal use will
not lead to any noticeable wear on the lining.
Friction lining wear increase the airgap. Thoses brakes are
designed without airgap adjustment system. If the airgap
reach the maxi. value indicated in table 1, the friction disc
has to be changed.
5
Electrical connection
Brake ERS VAR 09 size 50/50 Warner Electric part num-
bers 1 12 106823 operates on a direct current supply.
Polarity can affect the brake operation.
5.1
Important recommendations
All works on the electrical connections have to be
made with power off.
Make sure that the nominal supply voltage is always
maintained. A lack of power results in a reduction
to the maximum airgap.
Emergency braking :
for emergency braking the
switching OFF must be connected on DC current
side, in order to obtain short engaging time of the brake.
Service braking :
for service braking, the switching OFF
and the switching ON must be connected on AC current
side, in order to obtain silent switching.
The connecting wires must be thick enough to help prevent
sudden drops in voltage between the source and the brake.
Tolerances on the supply voltage at the brake terminals
+5% / -10% (NF C 79-300).
5.2
5.2 Connection
1 2 3 4
1 2 3 4
60
600
200
Magnet C
Magnet D
Coil
Magnet D
Coil
Magnet C
Connector PHOENIX
IC 2.5/4 - ST - 5.08
4 x 1,5 mm
2
no shielded
