PowerOhm Products for Allen Bradley

29
PO Box 537 Katy, TX 77492
Phone: (800) 838-4694
Fax: (859)-384-8099
Email: sales@powerohm.com
Powerohm Type BM Braking Modules
PRODUCT OVERVIEW
Powerohm Type BM Braking Modules can be used in
conjunction with any AC drive to monitor the DC bus
of the drive and activate external braking resistor as
needed not only to avoid over-voltage trips, but to
greatly improve the performance of the drive system.
The use of Braking Modules and resistors increase
the braking torque capability of a variable frequency
drive, allowing faster and more controlled
deceleration times.
To accommodate system horsepower requirements
beyond the capability of a single Module, the
Modules are all Master/Slave programmable. This
allows an arrangement of multiple Modules to
effectively function as a single higher rated module.
Listed on pages 29 and 30 are part numbers for both
the Brake Module and corresponding Brake Resistor
by voltage, HP and duty cycle that may be paired
together to form a solution for PowerFlex and Legacy
Series Drives (1336 and 1305). Pricing for the Brake
Modules appears on page 61, while the pricing for the
resistors may be found in the resistor index pages 40
– 49.
GENERAL SPECIFICATIONS
The Powerohm Type BM Braking Module is available
in three different voltage classes including 240, 480
and 600 volts.
Powerohm
Part No.
Nominal
AC Line
Voltage
RMS
Continuous
Load
Current
Turn ON
Voltage
Max Peak
Current
PWA050NC 240 50 375 200
PWA115NC 240 115 375 200
PWA450NC 240 450 375 600
PWA600NC 240 600 375 900
PWB050NC 480 50 750 200
PWB115NC 480 115 750 200
PWB450NC 480 450 750 600
PWB600NC 480 600 750 900
PWC050NC 600 50 940 200
PWC115NC 600 115 940 200
PWC450NC 600 450 940 600
PWC600N
C
600 600 940 900