Modules And Accessories
3.115
DF93 - Rack with 4 slots (with diagnostic)
Description
The DF93 rack is integral part of the new power system of LC700. Its features provide low voltage
drop through the IMB bus, so it is more efficient. Besides, the diagnostics resources of DF93 help in
the problems detection minimizing the time stop and maintenance. The diagnostic can be obtained
observing the diagnostics LEDs.
The DF93 rack has Vcc and GND terminals at laterals (for power transmission). DF93’s finishing
avoids short circuits between the Vcc and GND connections at laterals.
As in the previous system, new racks can be added to the LC700 system according to the
application needs. Up to 15 racks are allowed. The racks can be connected among them (expanding
the bus) using flat cables (DF101 to DF107), DF90 (IMB power cable), and DF91 (lateral adapter).
Remember that the distance between the first module and the last module of a LC700 system,
expanded by flat cables cannot exceed 22.97ft (7 meters).
NOTE
Each Rack has a rotating switch to select the address. The possible addresses are 0,
1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. Note that the “F” address is not allowed.
See Chapter 2 - LC700 Architecture.
There are restrictions related to the module location on the rack. The restrictions are as follows:
1. The first slot of rack 0 is always reserved for the power supply module.
2. The second slot of rack 0 is always reserved for the controller module.
3. All additional power supplies need to be placed in the slot 0 of the desired rack (jumper W1
in the rack must be cut and the DF90 cable from the previous racks must be disconnected
before plugging the power supply).
4. The last rack must have a terminator installed – T-700 (right side) or DF96 (left side). For
further details refer to Chapter 2.
5. Grounding terminals must be used. See the next figure.
Technical Specifications
DIMENSIONS AND WEIGHT
Dimensions (W x H x D) 148.5 x 25 x 163 mm; (5.85 x 0.98 x 6.42 in.)
Weight 0.216 kg
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