The CAM-685 is an automatic generating set control unit designed for managing and monitoring power generation systems. It connects the power users to either the mains or the generator, ensuring a continuous power supply. This unit is suitable for various applications, including emergency power intervention.
Function Description
The CAM-685 controls the function of a generating set and connects the power users to the mains or the generator. It can manage up to 26 instruments, providing synchronous readings of 6. The unit is equipped with an electronic control of the injection system via CAN Bus (SAEJ1939) for engines with this feature.
Key functions include:
- Three-phase voltmetric control: Monitors minimum, maximum voltage, asymmetry, and phase sequence of both the mains and the generator.
- Remote controls: Allows for remote operation and monitoring.
- EJP function: Specific functionality, likely related to power management or emergency stop.
- Generator starting: Can start the generator when the battery charge is low.
- Programmable inputs: Features fully programmable inputs for anomalies, including times, polarities, stopping possibilities, and custom messages.
- Glow plugs preheating management: Manages the preheating process for glow plugs.
- Refuelling management: Controls refuelling of the working tank from a storage tank.
- Clock for programming: Allows scheduling of generator start and stop times.
- Generator start/stop: Enables starting and stopping the generator on demand.
- Weekly selftest: Performs a self-test weekly to ensure proper operation.
- Anomalies log: Records anomalies, including data from the last 50 occurrences.
- Preventive maintenance indication: Notifies users when preventive maintenance is due.
- Fault display: Displays the most serious faults using both LED indicators and messages on the display.
- MOD Bus protocol: Supports MOD Bus protocol, available as an optional feature.
Connections and Functions of the Central Unit CAM-685
The CAM-685 can be integrated into a broader system with several modules:
- Modem GSM: Enables remote monitoring and control via a mobile phone. It can display operating status, start/stop the generator, and send SMS messages if an alarm state is detected.
- Battery Charger CBS-030 or 060: Connects to the battery charger via a serial cable (RS485). The central unit CAM-685 displays charging conditions, including short circuit, polarity inversion, battery cables disconnected, and charging current and battery voltage.
- Traditional Engine or Engine with CAN Bus Connection (SAEJ1939): The CAM-685 provides control for the electronic control of the injection system.
- Expansion Module MDE-058: Expands the unit's capabilities by adding 8 digital inputs and 8 outputs through an RS485 connection. Up to 4 modules can be connected simultaneously.
- Remote Panel PRE-685: A remote panel that replicates the instruments and anomalies managed by the central unit CAM-685.
- Contactors or Motor-Driven Switch Command: The unit can control mains and genset contactors.
Remote Operation by Personal Computer with ZW-100 Software
The ZW-100 remote operation software allows for comprehensive control and monitoring from a personal computer:
- Display and Print: Shows and prints instruments, alarms, and the anomalies log managed by the CAM-685.
- Control: Enables starting and stopping the motor and resetting faults.
- Multipoint Connection: When using RS422 or Ethernet, the software can manage up to 8 control units simultaneously.
Connectivity Options
- Direct Connection: Used for controlling a single unit installed near the personal computer.
- GSM Modem Connection: Monitors a single unit installed remotely.
- Analog Standard Modem Connection: Monitors a single unit remotely when a mains phone line is available.
- Multipoint Connection: Creates a small network to connect up to 8 Elcos control units (CAM-685, CAM-120), all monitored by ZW-100.
- Ethernet Connection: Connects up to 8 Elcos control units (CAM-685, CAM-120) to an existing LAN network, with all units monitored by ZW-100.
- Internet Connection: Remotely monitors and manages Elcos control units (CAM-685, CAM-120) via the Internet.
Displayed Instruments
The CAM-685 provides readings for a wide range of parameters:
- Voltmeters: Three mains voltmeters, three generator voltmeters, mains/generator phase/phase line voltages, mains/generator star voltages.
- Ammeters: Three mains/generator ammeters.
- Frequency Meter.
- Wattmeter (1): Total and per phase.
- Varmeter (1): Total and per phase.
- Voltameter (1): Total and per phase.
- Cosphimeter.
- Kilowatt-Hour Meter.
- Hour Meters: Partial and total hour meters.
- Starting Counter.
- Tachometer.
- Battery Charger: Voltage and current (with CBS-030 or CBS-060).
- Fuel Level Indicator.
- Temperature: Water or oil thermometer.
- Oil Pressure Gauge.
Usage Features
The control unit operates in several modes:
- Manual: Allows direct control of the generator.
- Automatic: Automatically manages the generator based on predefined settings.
- Test: For testing the system.
- Off: Unit is powered off.
User interactions include:
- Brief press: Shows instruments.
- Hold down: Verifies LED test and silences general alarms.
- Press to divert: Switches power users between mains and generator.
- Press to start/stop: Controls engine operation in manual mode.
- Press to control refuelling: Manages the refuelling process.
Important Technical Specifications
- Battery Power Supply: 8 ÷ 32 VDC.
- Degree of Protection:
- Dimensions (LxHxP): 290 x 200 x 62 mm.
Maintenance Features
The CAM-685 includes features to aid in maintenance:
- Preventive maintenance indication: Alerts users when maintenance is required.
- Anomalies log: Provides a detailed record of system faults, assisting in troubleshooting.
- Self-test: Weekly self-tests help ensure the unit is functioning correctly.
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