PAAE085176 Wartsila Analog Input Module new and original

• Brand
  Wartsila
• Model
  PAAE085176
• Product Name
  Analog Input Module
• Dimensions
  220 mm × 125 mm × 35 mm
• Weight
  0.42 kg
• Place of Origin
  Finland
• HS Code
  85389000
• Operating Temperature
  -10°C to +70°C
• Storage Temperature
  -50°C to +90°C
• Power Supply
  24 V DC
• Warranty
  12 month
• Status
  brand new

Wartsila MCM-11 (PAAE085176) Input & Output Specifications

Input Specifications

Power Input

Nominal Supply Voltage: 24 V DC

Operating Voltage Range: 18 V DC to 30 V DC

Maximum Power Consumption: 32 W

Integrated protection: Reverse polarity protection, ESD protection and transient overvoltage protection for stable shipboard power operation

Signal Inputs

Digital Binary Inputs: Galvanically isolated 24 V DC sink/source and dry-contact inputs. Used for engine start/stop commands, operation mode selection, external safety interlocks and equipment status feedback signals.

Analog Inputs: Standard 4-20 mA current inputs for acquiring engine process parameters, including lube oil pressure, cooling water temperature, fuel pressure and other critical sensor measurements.

Speed Pick-up Input: Dedicated interface for magnetic speed sensors, applied for real-time engine crankshaft speed monitoring and speed-related control logic.

Communication Input Interfaces

Internal CAN Bus: Receives real-time operational status and data from other cabinet modules, including ESM-20 and FCM-20, to support coordinated system control.

RS-485 Modbus-RTU: Accepts parameter configuration, calibration and diagnostic commands from the official Wärtsilä service PC tool.

Internal CAN Bus: Transmits control instructions and synchronous data to other functional modules inside the engine control cabinet to ensure unified system operation.

RS-485 Modbus-RTU: Uploads real-time engine operating parameters, system running status, active alarms and historical event logs to Wärtsilä IAS/IAS-XT ship automation systems and third-party SCADA monitoring platforms.

Local Indication Output

Front-panel LED Array: Provides visual indication of module power status, running state, active alarms and communication link status.

Service Diagnostic LED: Dedicated indicator for diagnosing internal module faults and facilitating on-site maintenance and troubleshooting.

Wartsila MCM-11 (PAAE085176) Operation Steps

Pre-operation Safety Notice

Disconnect the 24 V DC cabinet power prior to wiring work, plug-in terminal removal or module replacement. ESD anti-static precautions must be followed to prevent electrostatic damage to internal circuit boards. As a critical engine-control component, all parameter adjustments should only be carried out using the official Wärtsilä service software.

1. Installation & Wiring Steps

Securely mount the MCM-11 unit to its designated cabinet panel position and tighten the mounting screws.

Ensure all spring-loaded plug-in terminals are in the unlocked state; route and terminate field cables strictly in accordance with the terminal connection drawing.

Terminate the 24 V DC power supply terminals and double-check correct polarity.

Complete field-signal connections for digital inputs, analog inputs, relay outputs and analog outputs.

Run internal CAN-bus cabling to interconnect with ESM-20, FCM-20 and other relevant cabinet-resident modules.

Wire the RS-485 Modbus-RTU interface to the vessel automation system and the service debugging port.

Engage the latch of each plug-in terminal block to ensure stable electrical contact.

2. Power-on Procedure

Thoroughly inspect all terminals for correct wiring and absence of short-circuit conditions.

Energise the cabinet 24 V DC power supply.

Observe front-panel LED indicators; confirm the power-supply LED illuminates continuously.

Allow 30-60 seconds for module booting and built-in self-diagnosis routines to complete.

Verify the run-status LED remains steadily lit with no persistent fault-diagnostic LED alerts.

Confirm normal blinking activity on CAN-bus and Modbus communication LEDs, indicating active data transmission.

3. Commissioning & Parameter Configuration

Connect the service-configuration laptop to the MCM-11 RS-485 service port.

Start the dedicated official Wärtsilä service configuration tool.

Establish communication with the module and verify that hardware and firmware revisions comply with system specifications.

Download engine-specific application parameters; configure Modbus station address, baud rate and parity settings.

Carry out calibration for analog-input channels to validate consistency of 4-20 mA sensor readings.

Verify digital-input status: actuate each dry-contact and 24 V DC signal and confirm corresponding status feedback within the service tool.

Under safe offline conditions, utilise the manual-forcing function to test relay outputs and 4-20 mA analog outputs.

Save all validated configuration parameters into the module’s non-volatile memory.

Export a complete parameter-backup file for maintenance records and archive storage.

4. Normal Running Monitoring

During regular engine operation, monitor front-panel LEDs for power supply, run state, alarm events and communication health.

Check real-time engine process values transmitted to the Wärtsilä IAS/IAS-XT or third-party SCADA platform.

Periodically retrieve event logs and alarm history via the service tool.

In case of alarm activation, identify the affected input or output channel from LED indications; first inspect external sensors, field wiring and interlock signals.

5. Module Replacement Procedure

Bring the associated engine to a safe condition, activate safety interlocks and de-energise the cabinet 24 V DC supply.

Release plug-in terminal latches and withdraw each complete terminal block; do not disconnect individual wires from terminals.

Remove mounting screws and extract the defective MCM-11 module.

Unpack the spare module from its anti-static packaging and verify part-number PAAE085176 as well as firmware compatibility.

Fit the replacement module onto the cabinet panel and fully tighten mounting fasteners.

Re-insert the original intact plug-in terminal blocks into their respective slots.

Restore cabinet power supply and allow the module to finish power-on self-tests.

Launch the service tool and upload the previously saved backup-parameter file to the new hardware.

Re-validate all input-output signals, communication links and alarm-related functions.

Perform partial functional testing before returning the engine to full operational mode.

6. Fault Diagnosis & Reset

When the fault-diagnostic LED is lit, retrieve fault codes and event history through the service tool.

Initiate a software-driven soft reset where possible, without disconnecting power.

If soft reset proves ineffective, perform a full power cycle: cut off 24 V DC supply, maintain power-off state for at least 60 seconds, then re-apply power.

Never short-circuit the hardware INIT terminal without guidance from an authorised Wärtsilä technician, as this restores factory defaults and erases application-specific engine parameters.

Once troubleshooting is completed, clear historical alarm entries and confirm no active faults remain present.

7. Power-off / De-commissioning Steps

Place the engine into safe-stop status and disable automatic control functions.

Switch off the cabinet 24 V DC power supply.

Release latches and sequentially pull out all plug-in terminal blocks.

Loosen mounting screws and remove the module from the cabinet assembly.

Store the removed module within an anti-static bag for spare-part retention or repair dispatch.

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