The CTC Locomotive Module G2 is optimized for installation in Gauge 1 and garden railway locomotives. Locomotives with many functions benefit from the two motor connections, 10 switch outputs, and 2 servo connections of this locomotive module. Additionally, a SUSI sound module can be connected.

We offer the CTC Locomotive Module G2 in two versions with different driver components:

• No. P2-05-06 for two motors each with 3.5 A peak
• No. P2-05-07 for two motors each with 6 A peak

In current LGB locomotives, the motor blocks (including track contact) are connected via a ribbon cable with a socket in a 2.54 mm grid. We offer an assembly variant where two screw terminals are replaced by suitable pin headers:

• No. P2-05-08 for 3.5 A peak
• No. P2-05-09 for 6 A peak

In the overview “CTC Locomotive Modules” you will find more modules and links to installation instructions.

Pin Assignment Locomotive Module G2

The pin assignment of all four variants of the CTC Locomotive Module G2 is identical. The different driver components are only identifiable by the print on the components. We mark the 3.5 A variant with a red dot and the 6 A variant with a green dot. Here is the universal variant with screw terminals:

Here is the variant intended for newer LGB locomotives with pin headers for motor and track connection:

Pin Assignment (Older) Locomotive Module G

Notes on the old Locomotive Module G:

• The pin labeling at “Servo-5V” was incorrect until 19.06.2023 (VBB and 5V swapped)!
• For CTC Locomotive Modules G delivered before 09.07.2021, the SW connections were swapped in pairs. This can be corrected via software configuration.

Connection

Notes:

• When choosing the input voltage, make sure that motors, lights, etc., connected to the CTC module can also handle this voltage!

Standard Configuration:

• Connect the track-A and track-B contacts to the track or the power supply. It does not matter whether you supply the track with an analog transformer, a digital center, or a power supply, as long as the maximum voltage of 24 V is not exceeded. Since a rectifier is connected at the input, it does not matter which pole you connect to track-A and track-B. However, both track-A and track-B connections must each be connected to the same track contact.
• Connect the support capacitor (electrolytic, min. 400 uF, recommended 6800 uF) to VBB (positive pole) and GND.
• Connect the motors to Mo1+ and Mo1- (or Mo2+ and Mo2-).
• Connect the negative poles of lights to one of the SW-x connections. Connect the positive pole to any VBB connection.
• Optionally, connect additional SW connections, e.g., to the negative pole of the electric coupling, smoke set, or additional lighting. Connect the positive pole to any VBB connection.
• Connect the CTC NFC Reader to NFC-RX, NFC-TX, as well as VCC and GND.
• Plug the SUSI sound module into the SUSI Classic socket.

The assignment of pins to switches in the app can be freely configured (Cfg.xml).

Additional Connections

For servos, e.g., to raise and lower pantographs, you need a separate 5V power supply. Suitable boards can be purchased from us.

Connecting the Servos:

• Plug the power supply board into the socket strip. Pay attention to the correct polarity.
• Connect the servos to the pin headers. Again, make sure to observe the polarity.

The assignment of servos to switches in the app can be freely configured (Cfg.xml).

Mounting Holder

The CTC Locomotive Module G and G2 always come with a mounting holder. The photo shows the CTC Locomotive Module G:

The distance between the screw holes is 49 mm, just like the lead weight of the LGB Köf (D10).