Warner Electric ERDD User Manual

P-2062-WE
SM300gb - rev 11/04

Electrically Release Brakes

ERD and ERDD

Service Manual

We, WARNER ELECTRIC EUROPE, 7, rue Champfleur, B.P. 20095, F-49182 St Barthélemy d’Anjou Cedex
declare that these brakes are made in our factory from St Barthélemy d’Anjou,

and hereafter designated : ERD and ERDD

are exclusively designed for incorporation into a machine and to be assembled with other equipments to create a machine. The operation of the
product is submitted to the conformity of the complete equipment, following the provisions of the machinery directive 98/37/EC and if electric
to the EMC directive 89/336 /EEC. The conformity of the electric units to the Low Voltage directive 72/23 is supported by the full respect of the
following standards : NFC 79300 and VDE 05808/8.65.

Drawn up in St Barthélemy d’Anjou, July 2002
E. PRAT, General Managing Director

CONTENTS

1 Technical specifications 2
2 Precautions and restrictions on use 2

2.1 Restrictions on use 2

2.2 Precautions 3
and safety measures
3 Installation 3

3.1 Transport - storage 3

3.2 Handling 3

3.3 Installing 3
4 Maintenance 4

4.1 Adjusting the airgap 4

4.2 Adjusting the detector 4
5 Electrical connection 4

5.1 Important recommendations 4

5.2 Power supply 4
6 Options 5

6.1 Torque adjustment 5

6.2 Detection kit 5
7 Appendices 6-7

7. 1 Appendix 1 (ERD 500 to 1600 and 6
ERDD 1000 to 3200)

7. 2 Appendix 2 (ERD 3200 to 12800 and 7
ERDD 6400 to 25600)

1 Technical specifications (VAR00 and VAR03)

ERD Size 500 800 1600 3200 6400 12800

Nominal airgap mm
Airgap tolerance mm
Pull-in airgap max. mm
Tightening torque screw 909 Nm
Number of screws (Rep. 903) ­Handling Screws ­Allowable wear max* mm

0,4

± 0,005

1

48(±10%)

2xM10x80

M8

4

0,6

+0,05/-0,1

1,5

48(±10%)

4xM12x90

M12

4

0,6

+0,05/-0,1

1,5

110(±10%)

3xM16x110

M12

6,5

1

±0,1

2

150(±10%)

8xM20x120

M16

9

1,3

±0,15

2,5

260(±10%)

8xM20x140

M16

10

1,5

±0,15

380(±10%)

8XM20X180

M20
14,7

3

ERDD Size 1000 1600 3200 6400 12800 25600

Nominal airgap mm
Airgap tolerance mm
Pull-in airgap max. mm
Tightening torque screw 909 Nm
Number of screws (Rep. 903) ­Handling Screws ­Allowable wear max* mm

*See paragraphs 4-2 and 4-3

0,5

± 0,05

1

48(±10%)

2xM10x80

M8

9

0,7

+0,05/-0,1

1,5

48(±10%)

4xM12x90

M12
10,5

Table 1

0,7

+0,05/-0,1

1,5

110(±10%)

3xM16x110

M12
13,5

1,3

±0,1

2

150(±10%)

8xM20x120

M16
16,5

1,7

±0,15

2,5

260(±10%)

8xM20x140

M16

15

1,9

±0,15

3

380(±10%)

8XM20X180

M20
15,5

2 Precautions and restrictions on use

Symbol designating
an action that might
damage the brake

Symbol designating an
action that might be
dan gerous to human safety

Symbol designating an
elec trical action that might be
dangerous to human safety

2.1 Restrictions on use

These units are designed for dry operation. The

brake must be free from oil and grease.

Exceeding the maximum rotation speed listed in

the catalogue will invalidate the guarantee.

2 Warner Electric Europe • [phone] P-2062-WE • 2/13

ERD 500, ERD 800 and ERD 1600 can be hori-

zontally or vertically mounted, all other units can

only be mounted horizontally.

Ambient temperature for these units is

max 40° C (insulation class of 155°C).

2.2 Precautions and safety measures

During the maintenance period make sure

that the moving parts of the machine are
stationary and that there is no risk of start-up.
All intervention have to be made by qualified
personnel, owning this manual.

It is imperative that the release screws (903) are

mounted before any operation is made to the
unit.

Any modification made to the brake without

the express authorisation of a representative of
Warner Electric, in the same way than any use
out of the contrac tual specifications accepted
by “Warner Electric”, will result in the warranty
being invalidated and Warner Electric will
no longer be liable in any way with regard to
conformity.

3 Installation

Slide the hub (515) onto the shaft to be braked,

fit the driving key and secure it axially.

Keep the driving splines free of oil (i.e. friction

disc / hub). Otherwise this may reduce
performance.

It is important to note the hub mounting

directions (See Fig. 2).

ERD

ERDD

3.1 Transport / storage

These units are delivered in packaging that

guarantees a 6 months storage period whether
transported by land, by air, or by sea to any
destination excepting tropical countries. (For
tropical destinations please consult Warner
Electric technical services).

3.2 Handling

The unit is supplied pre-assembled except for

the hub.

Do not expose the unit to shocks whilst

handling as this may reduce performance.

Use the handling
holes provided for

Handling

screw

any operation (See
Fig. 1, table 1).

Never transport
the unit by the

cable.

3.2 Installation

Fig. 1

Fig. 2

The hub is normally supplied with the following

norms : tolerances H7 for bore, P9 for keyways
(According to NF E 22-175/DIN 6885/BS 4235/ISO
R773).

Fit the friction plate (348) onto the mounting

surface. For single disc brakes from size 3200 and
for dual disc brakes from size 6400, the friction
plate is directly fixed on the mount with CHC
screws (not provided) and secure them with a
LOCTITE 270 product.

Now install the friction disc (312). If this is a dual

disc brake, then fit the intermediate disc (320) or
(321) and finally install the second friction disc
(according to size).

NOTE: The angle of the friction discs must be

facing the friction plate (see Fig. 2).

Slide the pre-campled moving armature (330) /

inductor (101) between the friction faces and fix
it with locking screws (909) and washers noting
carefully the tightening torque (see table 1 page 2).

To mount the unit proceed as follows: according

to types, (see appendices 1 or 2):

Remove release screws (903). Energize the unit

(see chapter 5) and check if the friction disc
rotates freely.

Compress springs with release screws (903).

The moving armature (330) must be pulled
against the inductor (101).

Energise the brake a number of times whilst the

motor is static and check the nominal airgap value

(See table 1 page 2) near the faces of the friction
Loosen the locking screws (909), the friction
plate (348), the friction disc(s) (312) and the

plate (348). If insufficient airgap, see chapter 4

(maintenance)
intermediate disc (320) or (321) for brakes with

dual discs.

Warner Electric Europe • [phone] P-2062-WE • 2/13 3