Rockwell Automation 1403-DMA_DMB PowerMonitor II Display Module - Manual (Page 2)

Bulletin 1403 Powermonitor II Display Module 2
Publication 1403-5.2 – September 1996
Table A. Voltage Ratings
Cat. No./
Voltage Range
AC Voltages/DC Voltages
(+10% to –20%)
1403-DMA/High
Voltage
120V/ 240V AC 50/60 Hz or 125V/250V DC
1403-DMB/Low
Voltage
12V/24V AC or 12/24/48V DC
Terminal Block Wire Sizes and Screw Torque Values All
terminal block wire sizes and terminal block screw
torque values are shown in Bulletin 1403 Powermonitor
II Instruction Sheet, Publication 1403–5.0, Appendix C.
Fiber Optics The Powermonitor II communications
architecture consists of a fiber optic ring between the
Bulletin 1403 Master Module and up to three Display
Modules. The black transmitter component (TX) of a
unit must be connected to the blue receiver (RX)
component of the next unit and repeated for each
additional module until the ring is completed. Figure 2
shows a typical layout of the fiber optic cabling between
one Master Module and three Display Modules. Fiber
optic cable assembly specifications are given in Table B.
Important: Always maintain furnished rubber plugs in
the transmitter and receiver when cable
end connectors are not in place. This will
help prevent dirt from contaminating the
transmitter or receiver.
Figure 2. Fiber Optic Communications between a Bulletin 1403
Master Module and Three Display Modules
Table B. Fiber Optic Cable Assembly Specifications
Parameter
Minimum Cable
Length
Maximum
Cable
Length
Cable Length:
Distance between two
adjacent devices 25 cm (approx. 10 in.)
shortest Allen-Bradley
standard
500 m
(1650 ft.)
Minimum inside bend
radius
25.4 mm (1 in.) Any
bends with a shorter
inside radius can
permanently damage
the fiber optic cable.
Signal attenuation
increases with
decreased inside
bend radii.
N/A
!
ATTENTION: Any bend in a fiber optic
cable assembly with an inside radius of
less than 25.4 mm (1 in.) may
permanently damage the fiber optic cable
assembly.