WARNER ELECTRIC EUROPE - Rue Champfleur, B.P. 20095, F - 49182 St Barthélemy d’Anjou Cedex SM342gb - rev 01/06 4/5
Caution: When installing and should the brake ever be
dismantled, make sure that the friction disc heel is the right
way round when the brake is re-assembled (see Fig.1).
• Engage the brake (line up the brake on the fixing thread)
• Tighten the 8 fixing screws CHc M12 (star sequence
tightening, Cs: 50 Nm). Finish tightening with a torque,
76 Nm (±10%)
NOTE: Secure the fixing screws (use a safety washer or
thermoplastic liquid such as Loctite).
• Remove the 3 transport screws
• Make all the electrical connections
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. If for any
reason it should be necessary to adjust the airgap, proceed
as follows:
Loosen the attachment screws slightly. Adjust airgap
(Fig. 3) with adjusting screws (hexagonal bar 21/flat) until
they slightly exceed the nominal value (see Table 1). Tighten
the screws (refer to point 3.3 Installation). Carry out a few
successive draws and releases. Check the value of the
airgap at several points. Repeat the whole process if
necessary.for the second.
4.2 Adjusting the microswitch
Slide a wedge 0,15 mm thick close to the screw between
the face of the magnet and the moving armature. Switch
on the current and tighten the adjusting screw H M4 (7/flat)
in contact with the microswitch until you reach the com-
mutation point. Remove the disc or the wedge. Check that
it functions correctly by a few successive draws and
releases.
Operation microswitch
Current range 10 mA min. to 100 mA max. at 24 VDC.
Maximum electrical lifetime of the microswitch ensure only
by switching under resistive load.
Microswitch
connection
When the coil is switched off, the microswitch is in the "
NC " position.
5 Electrical connection
Brake ERS VAR08 SZ 1700/1700 Warner Electric part
number 1 12 106606 operates on a direct current sup-
ply. Polarity does not affect the way the brake operates.
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).
Fig. 3
Fig. 4
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