GE PMD-4, PMD-3 User Manual

Specifications
Power Requirements
Voltage range: 10 to 14 VDC, 12 volts nominal Current draw:
1.3 amps min.
3.5 amps max. Maximum ripple:
0.5 VAC PP
Minimum: -40°F (-40°C) Maximum: +160°F (+71°C)
Surge Protection
External air gap arrester (MDSA)
Transmitter
Track voltage: .35 volt RMS max. .125 volt RMS min. Frequency stability: ± .05% Phase stability: ± 1°
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Relay Drive
12 VDC nominal, 250 to 1000 ohms
Frequency Range
All standard motion detector channels
Dimensions PMD-3: Height: 14.6 in (370.8 mm) Width: 11 in (279.4 mm) Depth: 10.75 in (273.1 mm) PMD-3R: Height: 14.6 in (370.8 mm) Width: 19.25 in (489 mm) Depth: 10.75 in (273.1 mm)
Weight PMD-3: 13 pounds (5.9 kg) PMD-3R: 22 pounds (9.98 kg)
doc20050-B
GE
Transportation
The Phase Motion Detector PMD-3 monitors train approach directions from 240 to 7,500 feet (2,286 meters), activating warning signals at the specified pre-set distance.
The PMD-3 shares module compatibility with the GE - Transportation HXP-3 crossing processor’s advanced microprocessor technology. This helps improve the economy of the PMD-3’s long-term maintenance, while its design flexibility helps reduce total installation expense and training cost.
The PMD-3 retains all the features that made earlier PMD
models easy to set up and count on. This latest iteration
provides advanced operating functionality and recording options. It offers enhanced rusty rail performance and is compatible with high-current cab signals.
The PMD-3 is available in two model configurations: The PMD-3 provides stand-alone operation for single-track applications. The PMD-3R is furnished with built-in redundancy for
single-track applications.
Phase Motion Detector PMD-3
Advanced Crossing Warning Activation
Recorder Options
Remote Installations
The PMD-3 is available with two multi­functional recorder options to enhance record keeping, improve maintenance, and reduce installation time.
The first option is the PMD-3’s original RMM, providing the following records for all PMD-3 configurations: Train record log – reports all PMD-3 inputs and outputs System event log – an accurate time­ stamped sequential log of all PMD-3 input and output status changes Train data log – a time-stamped data log containing RX and phase changes related to individual train moves External event log – event logging for up to 14 optically isolated digital inputs and 4 analog outputs (requires use of a recorder interface module) Onboard storage of local parameters transfers setup information between normal and standby systems to reduce installation time
The PMD-3 accommodates remote installations having up to 3,500 feet (1,066.8 meters) of track wire. Internal island module is not required for remote PMD-3 units.
Accessories
Shunts
NBS-1 with 10 ft (3.048 m) leads NBS-2 with 10 ft (3.048 m) leads NBS-3 with 10 ft (3.048 m) leads 1134D-2 wide band shunt 1134D-3, 1134D-4, and 1134D-5 dual wide band shunts
Frequency Selectable Shunts FSS-1 low impedance FSS-2 high impedance
Tuned Joint Couplers
TJC-1A, TJC-2A, TJC-3A TJC2/CAB
The second option is the HCA-3 module. It provides the following standard recorder logs (train record, system event, train data, and onboard storage of local parameters) as described above. The HCA-3 module also provides these enhanced recorder features: HCA data log – event logging for up to 14 optically isolated digital inputs and 4 analog outputs in a GDA compatible format (requires use of a recorder interface module) Can be programmed with existing HCA-1 ALP executable files Allows data retrieval either by a modem/serial port interface or through the PMD-3’s CPU module Offers compatibility with all HCA-1 software utility programs
Dummy “Track” Loads
1186A-1: 1000 ft (304.8 m) 1186A-2: 2000 ft (609.6 m)
Track Isolation Units
TIU-1, TIU-2, and TIU-3
Track and Battery Reactors
5025A track reactor 1180B battery reactor
Cab Signal Filters
CSC-60 CSC-100
Surge Protection
MDSA-1
Junction Boxes
385A-1 termination housing
Applications
Single track bidirectional.
Single track unidirectional back to back from the crossing.
Single track semi-bidirectional with unidirectional remote start .
Double track bidirectional.
Double track unidirectional back to back from the crossing.
Double track semi-bidirectional with unidirectional remote start .
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