User manual

2
Properties
• Developed for DCC systems
• Automatic polarity change
• Requires no separate supply
• Adjustable sensitivity
Technical parameters
Supply voltage: 7 -24 V
Idle mode current consumption: 20 mA
Max. current consumption: 40 mA
Dimensions: 42 x 36 mm
Short description
The connection of reverse loop and delta tracks causes a short
circuit. The module automatically detects the short circuit caused
during driving in and leaving the loop and automatically changes
the polarity on the isolated loop section. Thus permanent short
circuit status will be avoided.
The polarity change occurs so quickly that the engine smoothly
passes along the section.
Wiring
The module shall be connected between the arriving and the
isolated loop section as it is shown in Figure 1.
The isolation of the loop section is ensured by the isolation of the
rails on both sides.
Adjustment
After wiring the module can be taken into operation. Turn the
potentiometer "Sensitivity" to a position where the relay on the
module continuously switches on and off in an audible mode. Then
turn the potentiometer back until continuous switching on and off
ceases.