PCM4.1 DEIF Delomatic 4 Central Processing Module brand new

• Brand
  DEIF
• Model
  PCM4.1
• Product Name
  Delomatic 4 Central Processing Module
• Place of Origin
  Denmark
• Customs HS Code
  8537101190
• Power Supply
  24 V DC
• Dimensions
  270 mm × 190 mm × 40 mm
• Weight
  0.54 kg
• Operating Temperature
  -25 °C to +55 °C
• Storage Temperature
  -40 °C to +85 °C
• Warranty
  12 month
• Product Status
  new and original

Inputs and Outputs of DEIF PCM4.1

Note: The DEIF PCM4.1 acts as the core CPU and power routing module of the Delomatic‑4 PMS system. It features no built‑in discrete digital or analog I/O terminals. All field signal acquisition and output functions are implemented via IOM4.1, SCM4.1 and SCM4.2 expansion modules through the rack backplane bus.

Power Supply Input

Rated power supply: 24 V DC, with a tolerance range of -25% to +30% (18 V ~ 31.2 V DC)

Maximum operating current: 6 A

Integrated battery voltage monitoring input for 24 V battery bank status detection

External Communication I/O Interfaces

CAN-bus (3 Independent Channels)

Supported protocols: DEIF DM-4 dedicated protocol and J1939 engine protocol

Connection objects: IOM4.1, SCM4.x series modules, DGU genset controllers and engine ECUs

Configurable baud rate: 125 kbps / 250 kbps; 120 Ω terminal resistors required at both bus ends

RS-485 (1 Port)

Compatible with Modbus RTU protocol

Used for data connection with third-party slave devices and remote monitoring equipment

DM-4 Ethernet LAN (10/100 Mbit)

Serves as the internal system bus for HMI data interaction and redundant PCM4.1 controller synchronization

Dedicated for interconnection and data synchronization between master and standby controllers

USB Type-B Service Port

Local debugging I/O for parameter configuration upload/download, firmware upgrading and system log export

Exclusive for DEIF professional service tools

Internal Backplane Bus

High-speed backplane data bus: Realizes full DI/DO/AI/AO data exchange with IOM4.1 and SCM modules in the same rack

Provides stable DC operating power for all rack-mounted expansion modules

Extended I/O (Implemented by Matching Modules)

IOM4.1 General I/O Module

16 multi-functional configurable input channels: support dry-contact digital DI, 0–10 V voltage analog AI, 4–20 mA / 0–20 mA current analog AI (configurable via jumper setting)

8 relay digital output channels (DO): contact rating 250 V AC / 24 V DC, 8 A resistive load

4 analog output channels (AO), maximum output current 25 mA

SCM4.2 Signal Measurement Module

AC voltage measurement: 100–690 V AC (L1-L2-L3-N)

CT current input: adaptive for 1 A / 5 A secondary current transformers

Binary status inputs for circuit breaker feedback

Relay outputs for circuit breaker trip and close control

Front Panel Visual Output Indicators

Power LED, Run LED, Fault LED, CAN-bus status LED, LAN status LED

Fault-Diagnosis Procedure for DEIF PCM4.1 (Delomatic-4 PMS Core Power Control Module)

The PCM4.1 serves as the central CPU and core processing module of the DEIF Delomatic-4 power management system. This standardized diagnostic procedure covers complete troubleshooting workflows from basic hardware inspection, communication troubleshooting to log analysis and fault verification.

Step 1: Record Fault Phenomena Prior to Troubleshooting

Document the real-time status before any operation to ensure accurate fault judgment:

Record all LED status indicators, including Power, Run, Fault, CAN-bus and LAN LEDs.

Capture complete alarm texts, timestamps and event logs via local HMI or device Web-UI.

Define the fault scope: module no-power failure, system-wide communication failure, partial function abnormality, intermittent faults or system trip alarms.

Record on-site environmental conditions and modification history, including DC supply voltage, cabinet temperature, mechanical vibration, recent wiring changes and firmware upgrade records.

Step 2: Power Supply Inspection (Most Common Failure Cause)

The PCM4.1 adopts 24 V DC power supply with a tolerance range of -25% ~ +30% and a maximum operating current of 6 A. Load-side voltage measurement is required for accurate judgment.

Measure the terminal DC voltage under loaded conditions; voltage below 18 V will cause random rebooting and system instability.

Inspect cabinet fuses and power terminals for looseness, oxidation and poor contact.

Verify the correctness of dual-redundant 24 V DC wiring for redundant system configurations.

Perform power cycle testing: Cut off the DC power supply for 3–5 minutes and restore power to observe the boot sequence and LED status changes.

Fault Judgment:

Power LED off: No input power or internal module hardware damage.

Power LED on with continuously flashing Run LED: Boot failure, firmware corruption or internal hardware abnormality.

Step 3: Visual and Mechanical Inspection

Remove the PCM4.1 module and inspect the backplane gold-plated connector for dust, oxidation, bending or pin damage.

Check the module surface for burn marks, water stains, heavy dust accumulation and overheating discoloration.

Reinstall the module firmly and fasten the rack locking screws. The Delomatic-4 system supports qualified hot-swap replacement.

Step 4: Communication Interface Troubleshooting

The PCM4.1 is equipped with 3 CAN-bus interfaces, 1 RS485 interface, dedicated DM4 LAN and USB service port. Targeted troubleshooting is conducted for different communication faults.

CAN-bus Communication Failure (Offline with IOM4.1/SCM4.1/DGU Units)

Check bus terminal resistance: 120 Ω termination resistors must be installed at both physical ends; remove redundant parallel terminators.

Verify CAN-H and CAN-L wiring polarity, check for cable breakage and grounding interference.

Judge bus status via CAN LED: flickering indicates normal data transmission; steady ON/OFF indicates bus short circuit or offline nodes.

LAN / Web-UI Connection Failure

Set the PC IP address to be consistent with the PCM4.1 subnet segment.

Test network connectivity via the Ping command.

Inspect LAN cables and switch port status; clear browser cache or replace the browser if ping succeeds while the Web page fails to open.

Perform local diagnosis and log export by directly connecting the PC to the module’s USB service port.

RS485 Communication Interruption

Check A/B signal polarity, terminal resistance, cable transmission distance and system grounding interference.

Step 5: Log Analysis and Firmware Inspection

Export event logs, fault logs and system diagnostic data via Web-UI or DEIF dedicated service tool. The records cover watchdog reset times, bus error statistics, over-temperature records and power voltage fluctuation history.

Analyze system reset causes: Watchdog resets are usually triggered by severe bus interference, firmware defects or internal hardware faults; power resets are caused by 24 V DC voltage dips.

Verify the firmware version consistency with the project-approved version. Abnormal operating status can be fixed by re-flashing matched firmware.

Caution: The firmware version of PCM4.1 must match all peripheral DM4 modules. Mismatched firmware will lead to system logic disorder and functional failure.

Step 6: Typical Fault Phenomena and Root Cause Analysis

Normal boot but invalid PMS overall logic Cause: Missing or corrupted project configuration files, incomplete configuration download, or system not switched to operation mode. Solution: Re-import and restore the verified complete project configuration.

Intermittent communication dropout with IOM/SCM modules Cause: CAN-bus electromagnetic interference, missing terminal resistors, loose backplane contact or unstable DC power supply.

Steady Fault LED with no hardware failure Cause: The alarm is triggered by slave IOM/SCM/DGU system-level faults instead of PCM4.1 self-faults; the main module only forwards alarm information.

Repeated automatic module reboot Cause: 24 V DC voltage fluctuation, excessive cabinet ambient temperature or internal hardware failure.

Redundant PCM4.1 failover failure Cause: Synchronization cable fault, inconsistent firmware versions or mismatched configuration between primary and standby modules.

Step 7: Isolation Test and Spare Part Verification

Isolate all external devices: Disconnect CAN, LAN and RS485 external cables, then power on the module independently to distinguish whether the fault comes from the module itself or on-site field wiring.

Perform swap test: Replace with a fully functional spare PCM4.1, import the original project configuration, and observe system operating status.

If the spare module works normally, the original PCM4.1 has hardware damage and needs to be sent to DEIF authorized service center for maintenance.

Step 8: On-Site Environmental Inspection

The PCM4.1 operating temperature range is -20 ℃ ~ +70 ℃. Long-term high temperature will trigger over-temperature protection, automatic reset and accelerated hardware aging.

Check cabinet ventilation, fan operation status and internal dust accumulation.

Keep the module away from high-power inverters and contactor cables to avoid strong electromagnetic interference.

MDR2
AGC 242
AGC 245
PPU-3