Warner Electric ERD–Electrically Released Brakes User Manual
ERD–Electrically Released Brakes
P-229
819-0453
Installation Instructions
Warner Electric’s ERD series spring set, elec-
trically released brakes are designed to hold a
load when the power to the brake is off. ERD
brakes are offered in eight different sizes and
the characteristics of each are described under
“Specifications”. Brake options include a manual release handle, dust cover, and thin or thick
friction flanges. A friction flange is to be mounted to the back of the brake on applications
where the mounting surface is not suitable for
use as a friction surface for repeated stopping
and holding. The manual release handle offers
the operator the ability for controlled load
release without energizing the electrical coil.
Specifications
Options Units ERD 5 ERD 10 ERD 20 ERD 35 ERD 60 ERD 100 ERD 170 ERD 300
Contents
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Electrical Connection . . . . . . . . . . . . . . . . . . . . .3
Torque Adjustment . . . . . . . . . . . . . . . . . . . . . . .4
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Brake Components . . . . . . . . . . . . . . . . . . . . . .5
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Warranty . . . . . . . . . . . . . . . . . . . . . . .Back Page
Failure to follow these instructions may r
ment damage, and serious or fatal injury to
personnel.
esult in product damage, equip-
Holding Torque in.lb. 45 85 175 310 530 890 1500 2650
Maximum Speed RPM 3600 3600 3600 3600 3600 3600 3600 3600
Nominal Airgap Inch .008 .008 .008 .012 .012 .012 .012 .012
Maximum Airgap Inch .020 .025 .020 .030 .030 .035 .035 .040
Current Draw Amps
24 VDC 0.83 1.03 1.22 1.61 1.94 2.35 2.73 4.11
90/96/103.5 96 VDC 0.21 0.26 0.31 0.41 0.49 0.569 0.69 1.122
190/207/215 190 VDC 0.11 0.13 0.16 0.21 0.27 0.38 0.38 0.61
Resistance at
Ambient Temp. 24 VDC Ohms 28.9 23.4 19.6 14.9 12.4 10.22 8.78 5.83
90/96/103.5 96 VDC 454 372 310 233 166.2 168.6 139.2 85.63
190/207/215 190 VDC 1775 1450 1209 912 648.1 628.5 507.2 315.6
Weight Ibs 2 4 7 10 14 22 34 57
Warner Electric • 800-825-9050 819-0453
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Installation
ERD brakes are supplied in kit form. The magnet
assembly is supplied with airgap factory adjusted. Brakes are designed for dry operation and
can be mounted horizontally or vertically.
o
Maximum ambient temperature is 104
F.
Customer Shall Maintain:
1. Squareness of flange mounting face with
shaft within 0.006 in. (0.15mm) T.I.R. measured at the mounting shaft.
2. Concentricity of flange mounting with mounting 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 ar
Thick flanges are typical.
Step 2
Install key into shaft. Slide hub onto shaft and
ovide a suitable axial stop. Stop collars are
pr
typical.
Step 3
Slide friction disc on to hub.
Step 4
Fit magnet assembly to friction plate or prepar
ed 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 5 10 20 35 60 100 170 300
Torque, lb.in. 20 40 70 70 210 210 210 425
e provided on Page 7.
Secure bolts using a LOCTITE 270 type thermoplastic 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 several times to confirm friction disc r
otates 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 controls:
Model Part Number
CBC-400-24 6006-448-002
CBC-450-24
CBC-500-24 6024-448-002
CBC-550-24 6024-448-005
Warner Electric Rectifiers:
AC Input DC Output
240/220 V 96 V Half Wave CG 830
A1P1
415/380 V 190 V
A1P1
240/220 V 190 V Full Wave CG 830
A1P2
110 V 96 V Full Wave CG 830
A1P2
6006-448-005
Rectifier Part No.
Half Wave CG 830
Warner Electric • 800-825-9050 819-0453
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