EmpirBus NXT DCM User Manual

1. Introduction

The DCM is a product from the EmpirBus NXT product family. This document contains basic specifications, installation instructions, manual channel override, and fuse reset instructions. This and other documents are available at www.empirbus.com.

2. Safety Guidelines and Measures

To avoid accidental short circuits, ensure the power supply to the DCM is disconnected before making any connections. Never use this product where there is a danger of dust or gas explosion or other potentially flammable products.

3. Scope of Delivery

If the DCM is equipped with an integrated wireless receiver, a stub antenna is included in the box.

4. Model Range and Options

Both the unit and the box are marked with a model number. Each unit has a total of 16 configurable channels. For channel specification, refer to Table 9.1: Model Range.

5. Installation

5.1 Mounting

The DCM should be mounted on a flat vertical surface using four screws (not included), with the orientation as shown in Figure 5.1. The dimensions are 229 mm (width) x 190 mm (height) x 41 mm (depth), with mounting holes at 162 mm width and 59 mm height, and standoffs of 27 mm and 8.5 mm.

Figure 5.1: Dimensions (Drawing is not to scale.)

5.2 Connectors

The bus connector is an NMEA2000 compatible male Micro-C 5-pin connector. It is not recommended to connect a T-connector directly to the unit; a drop cable should be used between the main bus and the unit. Consumers and inputs are connected via Molex MX150L connectors. Use only correct crimp and extractor tools when assembling the connector. Unused pins in the connector should be plugged with circuit plugs to maintain IP65 rating.

5.3 Power Feed

Power is supplied via two M6 bolts: positive on the left (marked with +) and negative on the right (marked with -). The total maximum output of a DCM is 100A.

6. Circuits

The usage of a channel (input/output) is determined by the model, option configuration, and programming. Channels are numbered directly on the unit from 1 to 16. The channels are located on the upper row of pins, with the lower row serving as the minus connection. The Molex MX150L connectors accept cable dimensions up to 2.5 mm².

Figure 6.1: DCM pinout showing channels 1-8 and 9-16 on connectors X1 and X2 respectively, with minus pins below.

6.1 Inputs

Any channel on a DCM can be configured as a digital or analog input, provided the options support it.

6.1.1 Digital Input – Negative

Connect the switch directly between the minus terminal and the desired channel.

Diagram: Channel X connected to a switch, with the other side of the switch connected to Minus.

6.1.2 Digital Input – Positive

Connect the switch directly between the source (V+) and the desired channel. Note: The input and the DCM must share the same power supply.

Diagram: Channel X connected to a switch, with the other side of the switch connected to V+.

6.1.3 Digital Input – Commonline

A switch and an LED indicator can be connected to the same channel using the circuit described. The commonline channel needs to be connected to a channel that can switch to minus (e.g., channel 6 or 14 on all DCM models).

Diagram: Channel X connected to a switch and an LED (with resistor R). The commonline is connected to Channel 6/14.

The value of the resistor R can be calculated using: R = (Voltage supply – LED forward voltage) / 0.020A. LED forward voltage (Vf) is nominally 1.7 – 2.2 V.

Example 12V system: (14.5V - 1.7V) / 0.020A = 640Ω minimum (680Ω or higher recommended).

Example 24V system: (29V - 1.7V) / 0.020A = 1365Ω minimum (1500Ω or higher recommended).

6.1.4 Analog Input – Resistance

Connect the resistive sensor directly between the minus terminal and the desired channel.

Diagram: Channel X connected to a resistive sensor, with the other side of the sensor connected to Minus.

6.1.5 Analog Input – Voltage

Connect the voltage source directly to the desired channel. Refer to the data sheet for the measuring range. Note: The input signal source and the DCM must have a common ground.

If the input signal source is powered by another power supply, a resistor (10kΩ recommended) must be connected in series to the input. The programming must account for this. Note: The power supply for the input signal source and the DCM must have common ground (i.e., both batteries must have common ground).

Diagram: Channel X connected to V+ (possibly via resistor R), with the other side of V+ connected to Minus.

Input value x (15kΩ / (15kΩ + R)) = measured value.

Example 12V system: 12V x (15kΩ / (15kΩ + 10kΩ)) = 7.2V.

Example 24V system: 24V x (15kΩ / (15kΩ + 10kΩ)) = 14.4V.

6.1.6 Analog Input – Multi Switch

The circuit below enables four separate momentary switches to be connected to a single input channel. Note: Multi-switch channel setting is only possible for momentary switches. Only one button can be pressed at a time.

Diagram: Channel X connected to four parallel switches, each with a 68Ω resistor in series, all connected to Minus.

6.2 Outputs

Depending on the model, certain channels can be configured as outputs. Refer to Table 9.1 for model specifications.

6.2.1 Digital Output – Positive

Connect the load directly between the desired channel and the minus terminal.

Diagram: Channel X connected to a Load, with the other side of the Load connected to Minus.

6.2.2 Digital Output – Half Bridge

For actuators and other equipment that use shifting polarity, connect the equipment directly between two channels with minus output capability.

Diagram: Channel X connected to one side of a device, Channel Y connected to the other side. Both X and Y have minus output capability.

6.2.3 Digital Output – Window Wiper

Refer to Table 9.1 for models with window wiper capability. Depending on the electrical design of the window wiper, two different circuits are possible. The most common is window wiper circuit 1 (Figure 6.2).

Figure 6.2: Window wiper circuit 1. Shows a motor (M) with connections for Feedback, Low speed, and High speed. Channel X and Y are used for control, with Channel 4, 5, 12, or 13 used for High speed. Minus is also connected. A diode is never connected to channels 4, 5, 12, or 13.

Any channel can be used for Ch X and Ch Y. Channel 4, 5, 12, or 13 is used as the high-speed channel. Note: The diode is never connected to channel 4, 5, 12, or 13.

Window wiper circuit 2 (Figure 6.3) is less common.

Figure 6.3: Window wiper circuit 2. Similar to circuit 1, but Channel 4, 5, 12, or 13 is used for Low speed. A diode is never connected to channels 4, 5, 12, or 13.

Any channel can be used for Ch X and Ch Y. Channel 4, 5, 12, or 13 is used as the low-speed channel. Note: The diode is never connected to channel 4, 5, 12, or 13.

7. Configuration

The settings in this chapter can be configured directly on the unit. Some settings can also be configured via the EmpirBus Studio PC software, while others require configuration on both the PC software and the unit. For further information, see the EmpirBus Studio documentation.

7.1 Bus ID

All EmpirBus NXT units require a unique bus ID. The bus ID on the DCM can be read from the display in the upper left corner. The factory preset is bus ID 0 (000).

To change the bus ID on a DC module:

Press and hold RESET/AUTO for 10 seconds until the display shows “bAS”.
Press MAN ON/MAN OFF three times. The display will alternate between the current bus ID and “bAS”.
Use the arrow buttons to set the desired bus ID.
Press and hold RESET/AUTO for 10 seconds until the DC module restarts.

7.2 Fuse Reset

A channel with a tripped fuse is indicated by a continuous red channel indicator in normal running mode. To reset the channel to normal operation:

Press the right arrow button; “SEL” will be shown in the display.
Use the right arrow button to step to the desired channel.
Press and hold RESET/AUTO for two seconds to reset the fuse.
Press the left arrow until the message “SEL” disappears from the display.

Please note that if the problem that caused the fuse to trip still remains, the fuse will trip again.

7.3 Manual Channel Override

In case of bus failure, a failsafe functionality allows channels to be manually switched on or off. For automatic bus failure backup settings, refer to the Enhanced Limp Home documentation. A manually switched-off channel is indicated by a flashing red channel indicator in normal running mode. A manually switched-on channel is indicated by a flashing green channel indicator in normal running mode.

7.3.1 Manual Override Switch Off

Press the right arrow button; “SEL” will be shown in the display.
Use the right arrow button to step to the desired channel.
Press and hold MAN ON/MAN OFF for three seconds.
Press the left arrow until the message “SEL” disappears.
Outputs manually switched off are now indicated with a flashing red indication.

7.3.2 Manual Override Switch On

Press the right arrow button; “SEL” will be shown in the display.
Use the right arrow button to step to the desired channel.
Press and hold MAN ON/MAN OFF for three seconds.
If the channel indicator is still flashing red, press and hold MAN ON/MAN OFF for another three seconds.
Press the left arrow until the message “SEL” disappears.
Outputs manually switched on are now indicated with a flashing green indication.

7.3.3 Resetting a Channel

Press the right arrow button; “SEL” will be shown in the display.
Use the right arrow button to step to the desired channel.
Press and hold RESET/AUTO for two seconds; the channel is now reset.
Press the left arrow until the message “SEL” disappears from the display.

7.4 Wireless Transmitter Pairing

If the DCM is equipped with a wireless receiver, transmitters (switches/remotes/detectors, etc.) need to be paired with the unit to operate. Each transmitter must be paired to a unique function number.

Press and hold MAN ON/MAN OFF for 10 seconds until the display shows “P00”.
Use the right arrow button to step to “P10” for wireless receiver programming.
Press MAN ON/MAN OFF once. The display shows “OAS” / “001” blinking, indicating Wireless Channel 1 is selected.
Use the right arrow button to choose a channel (if other than 1).
Press MAN ON/MAN OFF to enter learning mode; the display will flash “LEA”.
Press the wireless switch (or trigger the detector) to be connected.
After the button is pressed, the display alternates between “LEA” and “ACC” for five seconds, indicating the transmitter was learned and accepted.
The DCM automatically detects the transmission type from the transmitter and suggests a setting: “FU1” (transmitter sends “pressed” and “released”) or “FU2” (transmitter sends only “pressed”). Press MAN ON/MAN OFF to accept the setting and continue. If additional transmitters need pairing, repeat from step 3.
Press RESET/AUTO to exit programming mode and return to normal mode.

How to delete a paired wireless channel:

Enter programming mode P10 as described above (steps 1 to 3).
Use the right arrow key to select the channel to erase (1 to 30).
Press MAN ON/MAN OFF once to enter learning mode.
Press and hold MAN ON/MAN OFF (the text “ddd” will appear on the display) until “del” is shown, then release the button.
Press MAN ON/MAN OFF once; the text “dcd” on the display confirms that the channel is erased.

8. Product Specifications

See Table 4.1 for model specification and hardware support.

Specification	Details
Output Fuse Setting	1, 5, 8, 10, 15, 18 A (15 and 18A not available on all models)
Output Minus (-)	2 channels 0.1A minus
Output Minus (-)	4 channels 0.5A minus, 3A max 20 sec (not available on all models)
Digital Input 12V power peak/average	170mA / 1mA (closed), <0.1mA (open)
Digital Input 24V power peak/average	340mA / 2mA (closed), <0.1mA (open)
Over current protection limit for LED	20mA
Analog Input Volt	0-32V +/-1%
Analog Input Current	4-20mA +/-1% (not available on all models)
Analog Input Resistance	0-1500 ohm +/-5%
Communication CAN-bus	NMEA 2000
Wireless Receiver	EnOcean
Power Supply Maximum current	100A
Power Supply Supply voltage	9-32VDC
Connectors NMEA 2000	Micro 5pin M12 Male
Connectors Channels	Molex MX150L 16 circuits
Connectors Power supply	M6 bolt
Antenna	SMA female
Environment Ambient temperature	-20 to +55 degrees Celsius
Environment Enclosure	Ingress Protection IP65, Polycarbonate¹
Physical data Size	229 x 104 x 41 mm
Physical data Weight	0.4 kg

¹ Exposure to solvents and/or water above 60°C may cause cracking on polycarbonate.

9. Appendix A – Model Range

Table 9.1: Model Range. All units are produced with a setup of options (See description in Figure 4.1). Any DCM can be delivered with a wireless receiver. Models with 0.5A minus outputs have window wiper capability.

Channel	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	Model
Input	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input
Output 10A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 10A
Output 18A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 18A
Output 0.1A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.1A minus
Output 0.5A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.5A minus
Input 4-20mA	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input 4-20mA
Input	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input
Output 10A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 10A
Output 18A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 18A
Output 0.1A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.1A minus
Output 0.5A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.5A minus
Input 4-20mA	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input 4-20mA
Input	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input
Output 10A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 10A
Output 18A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 18A
Output 0.1A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.1A minus
Output 0.5A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.5A minus
Input 4-20mA	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input 4-20mA
Input	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input
Output 10A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 10A
Output 18A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 18A
Output 0.1A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.1A minus
Output 0.5A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.5A minus
Input 4-20mA	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input 4-20mA
Input	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input
Output 10A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 10A
Output 18A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 18A
Output 0.1A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.1A minus
Output 0.5A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.5A minus
Input 4-20mA	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input 4-20mA
Input	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input
Output 10A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 10A
Output 18A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 18A
Output 0.1A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.1A minus
Output 0.5A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.5A minus
Input 4-20mA	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input 4-20mA
Input	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input
Output 10A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 10A
Output 18A	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 18A
Output 0.1A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.1A minus
Output 0.5A minus	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Output 0.5A minus
Input 4-20mA	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	Input 4-20mA
2010101	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2010102	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2010103	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2010104	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2010105	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2010403	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2010505	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2020106	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2020107	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2020108	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2020109	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2020110	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2020408	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
2020510	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X

Model Range Cross Reference Part Numbers

12V

2010101/010-02219-01
2010102/010-02219-02
2010103/010-02219-03
2010104/010-02219-04
2010105/010-02219-05
2010505/010-02219-55

24V

2020106/010-02220-06
2020107/010-02220-07
2020108/010-02220-08
2020108W/010-02221-08
2020109/010-02220-09
2020110/010-02220-10
2020408/010-02222-08
2020510/010-02222-10

Notes:

Declaration of Conformity

Garmin Sweden Technologies AB, Uddevalla, Sweden, declares that the articles:

2010101, 2010102, 2010103, 2010104, 2010105, 2010403, 2010505, 2020106, 2020107, 2020108, 2020109, 2020110, 2020408, 2020510, 2061001, 010-02219-XX, 010-02220-XX, 010-02221-XX, 010-02222-XX

are in conformity with EC Directive EMC 2014/30/EU, and 2020108W, 010-02221-08 conform with EC Directive RED 2014/53/EU.

The articles also comply with FCC 47 CFR Part 15, Subpart B, Class A.

SIGNS ON BEHALF OF: Garmin Sweden Technologies AB

Name: Henrik Niklasson

Position: Product & Sales Manager

Location and date: Uddevalla, Sweden, 1st December 2017

Signature: Henrik Niklasson

RoHS Certificate of Conformance