TransCore MPRX, System Manual

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System Guide
TransCore Proprietary 2–10
Table 2 – 3 Connector Cabling Accessory Kits
Part Number Description
MPRX-to-TRU™ six-foot (1.8-m) cable assembly
MPRX-to-TRU 20-foot (6.1-m) cable assembly
MPRX cable assembly six feet (1.8 m), no TRU
MPRX cable assembly 20 feet (6.1 m), no TRU
Electrical Power
When connecting the MPRX to a TRU in a trackside hut, the MPRX draws its power directly
from the TRU. A dedicated power supply is only required when a MPRX is not connected to
a TRU.
The dedicated power must be 24-110VDC (Option 1) or 12-24VDC (Option 2). Consult your
local and national electrical codes for installation and safety requirements.
It is the installer’s responsibility to supply conversion equipment and wiring.
Table 2 – 4
contains power supply current requirements.
Table 2 – 4 Power Supply Current Requirements
Supply
(RF On)
Worst Case
Maximum Current
at 68°F (20°C)
(RF Off)
Worst Case
Maximum Current
at 68°F (20°C)
24 to 110VDC (Option 1) 1.7A at 24VDC 1A at 24VDC
12-24VDC (Option 2) 2.1A at 12VDC 1.4A at 12VDC
Power circuits are protected internally against power surges (±30%).
Host Communications
Your site design must include communications between the MPRX and the TRU or other
host device. The MPRX communicates with the TRU or other host device through an
asynchronous RS-232, RS-422, or Ethernet interface.
Figure 2 – 5 shows the MPRX
communications ports and Figure 2 – 6 shows the connector pin designations.