Theory Of Operation - Maretron MPOWER CLMD16 User Manual

16channel dc load controller module

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Quick start manual (8 pages)

Configuration manual (58 pages)

User manual (90 pages)

Table Of Contents

Table of Contents

CLMD16 User's Manual

The CLMD16 provides the ability to control DC power to a load circuit using 16 independent solid-

state PWM capable Electronic Circuit Breakers (ECB's). Each breaker contains protection against

overcurrent, over-temperature, and short circuit.

Traditionally, a bank of mechanical circuit breakers is located on a panel from where bundles of

cables lead to the various loads located throughout the vessel. As the circuit breaker panel may be

some distance from the load, extensive wiring is required.

By placing a CLMD16 close to the loads being serviced, wiring becomes reduced. The CLMD16 is

simply connected to a suitable local power supply and the vessel's NMEA 2000

outputs on the CLMD16 are then connected to the circuits that they control, often by cables

considerably shorter than those required on vessels with conventional circuit breakers. Several

CLMD16's may be placed in different parts of the vessel, all controlled electronically via one of the

interfacing methods described below. An added advantage is that as requirements change, circuits

can be reconfigured without making any physical changes to circuit breakers as would be required

with traditional mechanical circuit breakers.

Each breaker in the CLMD16 may be controlled using any of the following methods:

1) Maretron N2KView

2) Maretron N2KView

Vessel Monitoring and Control

3) Maretron N2KView

and Control Touchscreen Computer

4) Maretron N2KView

5) Maretron DSM-Series NMEA 2000

6) any NMEA 2000

Series network-connected keypad or VMM-Series network-connected switches

7) any NMEA 2000

(please refer to Appendix A for details).

8) Any of the 8 digital inputs on this CLMD16, another CLMD16 or a CLMD12.

* Requires a USB100 or IPG100 gateway with a License Key

** Requires an IPG100 gateway

The breakers can be controlled and monitored through use of the Breaker/Switch component in the

Electrical Distribution category of the Maretron display products listed above. In addition, the current

through each breaker may be monitored through the Breaker/Switch Current component in the

Electrical Distribution category of Maretron display products.

Since the output channels are implemented by electronic circuit breakers, if the unit's Main DC(+) is

removed, all breakers will revert to the open (OFF) state. The state that the breaker will be in when

the unit's Main DC(+) is restored can be configured to be ON, OFF, or in the last state the breaker

was in before Main DC(+) was removed. If NMEA 2000

manually operated through the capacitive touch local override control panel located on the front of

the unit. To place the unit into "Override Mode", the "Override key must be held for 1s.