Warner Electric ERD–Electrically Released Brakes User Manual

Page 3

Warner Electric • 800-825-9050

819-0453

Installation

ERD brakes are supplied in kit form. The magnet
assembly is supplied with airgap factory adjust-
ed. Brakes are designed for dry operation and
can be mounted horizontally or vertically.
Maximum ambient temperature is 104

Customer Shall Maintain:

1. Squareness of flange mounting face with

shaft within 0.006 in. (0.15mm) T.I.R. meas-
ured at the mounting shaft.

2. Concentricity of flange mounting with mount-

ing shaft within 0.006 in. (0.15mm) T.I.R.

3. The mounting surface should be made of

steel or cast iron, square to the shaft with a
surface finish of 125 microinches or a fine
turned finish over the contact area.

Step 1

If a friction flange is provided, mount it first.
Mounting dimensions are provided on Page 7.
Thick flanges are typical.

Step 2

Install key into shaft. Slide hub onto shaft and
provide a suitable axial stop. Stop collars are
typical.

Step 3

Slide friction disc on to hub.

Step 4

Fit magnet assembly to friction plate or pre-
pared surface. If a hand release is to be used,
this should be installed at this time. Remove
the wedge pieces. Torque bolts to the following
specifications.

ERD Size

100

170 300

Torque, lb.in.

70 210 210

210 425

Secure bolts using a LOCTITE 270 type thermo-
plastic liquid.

If a rubber dust cover is to be used, install it
before installing the magnet.

Step 5

Apply power to magnet and cycle brake on sev-
eral times to confirm friction disc rotates freely.
Verify correct airgap.

Electrical Connection

Warner Electric ERD brakes are offered in 24,
96, 190, and 215 VDC versions. Energizing the
brake magnet with the proper voltage will cause
the magnetic field generated to overcome the
brake spring force and release the brake. Any
DC power source with adequate amperage will
operate the brake. Warner Electric offers 24
VDC controls to operate standard 24 VDC
brakes and full and half wave rectifiers to supply
96 or 190 VDC current for models with those
voltage ratings. Switches are customer supplied.
The magnets are not polarity sensitive, so any
magnet lead can be connected to any power
source lead.

Recommended Warner Electric 24 VDC con-
trols:

Model

Part Number

CBC-400-24

6006-448-002

CBC-450-24

6006-448-005

CBC-500-24

6024-448-002

CBC-550-24

6024-448-005

Warner Electric Rectifiers:

AC Input

DC Output Rectifier

Part No.

240/220 V

96 V

Half Wave CG 830

A1P1
415/380 V

190 V

Half Wave CG 830

A1P1
240/220 V

190 V

Full Wave CG 830

A1P2
110 V

96 V

Full Wave CG 830

A1P2