Warner Electric PMC-10A3, PMC-20A3, and PMC-40A3 - Manual (Page 4)

Mechanical Data
Drag Maximum Inertia
Unit Part Torque Torque Speed Input Output Weight
Number (lb. in.) (lb. in.) (rpm) (in. lb. 2 ) (in. lb. 2 ) (lbs.)
PMC-10A3 5401-270-111 8.6 .25 1800 .239 .0291 2.0
PMC-20A3 5401-270-121 17 .51 1800 .413 .0752 2.9
PMC-40A3 5401-270-131 34 1.0 1800 1.14 .372 5.5
4 Warner Electric • 800-825-9050 819-0369
Electrical Connections
To avoid injury (or even death),
always make certain all power is off before
attempting to install or service the control or
any electrical equipment.
The PMC-A3's operate on DC voltage. Warner
Electric offers a full line of AC powered controls
to meet the needs of almost every application.
The service and installation instructions included
with each Warner Electric control show the
proper electrical connections.
After wiring your Magnetic Particle unit, confirm
that the control circuit is functioning. Without
rotating the input shaft, verify that voltage is
applied when the control output is turned on.
Also, if appropriate, set the current for the prop-
er output. Your magnetic particle unit is now
ready for operation. For information on start up
and maintenance, see page 4 of this manual.
Electrical Data
Electrical Coil Data
Torque Torque
Unit Size Voltage Resistance Amperes Watts Build Up Decay
[ohms @ 75°F (25°C)] [@ 75°F (25°C)] [@ 75°F (25°C)] (msec) (msec)
10 24 35.1 0.684 16.4 20 8
20 24 31.6 0.760 18.2 30 10
40 24 26.3 0.912 21.9 40 12
Note: Build up time equals time for torque to build to approximately 63.2% of steady state value
after a step change in voltage. Decay time equals time for current to drop to approximately 36.8%
of the steady state value after a voltage change.
Start Up
The powder in the magnetic particle units some-
times settles during shipment and will need to
be redistributed. A simple run-in procedure
should be performed to ensure proper perform-
ance.
Run in Procedure
Notes: 1. Before running in, make sure the unit
does not bind. See step 2 of the pre-
mounting instructions.
2. If mounted as a clutch, the output
shaft must be locked to prevent it
from turning.
Set the control output voltage for 5 to 6 volts.
Turn off the control and run the input for one
minute. Run at a speed close to, but not
exceeding 1000 RPM. Then cycle the unit at 5
or 6 volts for five seconds and off for ten sec-
onds. Repeat this for 20 cycles.
When the powder is redistributed properly, the
torque will be consistent and proportional to
current.