Installation and I/O configuration of DEIF PPM-3 power management module

Transistor output (terminals 20-22): Two open collector electrode outputs (24V/1A), configurable for pulse counting or relay replacement.

Digital input (terminals 23-28): Bidirectional optocoupler, with a common terminal of 28. Typical functions:

Terminal 23: SWBD control (forced switch to local manual mode).

Terminal 26/27: Circuit breaker open/closed feedback (such as GB Open/Closed).

4.2 Definition of Specific Terminals of Different Types

4.2.1 Diesel Generator (DG) Mode

Terminal 43: Feedback on shore power connection position (for locking and closing).

Terminals 44~47: Manual speed up/down and voltage up/down (SWBD mode only).

Terminals 48-51: Heavy load request and fixed load feedback (used for power management program to start standby machine).

Terminal 54/55: Alarm suppression external input.

Terminals 57~64: Heavy load confirmation and NEL (non critical load) trip output.

Terminal 65~72 (Slot # 4): Standard relay type speed/voltage regulation (up/down frequency, up/down voltage), or optional analog output (± 20mA/0~20mA/PWM).

4.2.2 Emergency Diesel Generator (EDG) Mode

Compared to DG, EDG has additional features:

Terminal 24/25: Contact circuit breaker (TB) on/off feedback, instead of regular configuration input.

Terminal 43: Port Operation Mode - When this input is activated, the EDG operates as a regular generator, turning off the timer and automatic disconnection in emergency mode.

Terminal 48: Main busbar live input, used to ensure correct disconnection of TB during islanding operation.

Terminal 52/53: Short circuit fault inputs for GB and TB respectively.

4.2.3 Shaft Generator (SG) Mode

Terminals 37-42 (load sharing line) in Slot # 3 are labeled as "NOT USED" because the shaft strip usually does not participate in reactive power distribution.

Terminals 43~47 are all configurable and have no predefined functions.

Still supports overloaded requests and fixed load feedback (terminals 48-51).

Terminals 26/27 provide open/close feedback for SGB (axle belt circuit breaker).

4.2.4 Shore Connection (SC) Mode

Terminals 26/27 are SCB (shore circuit breaker) feedback.

The voltage transformer on the AC measurement side (Slot # 5) is connected to the shore voltage instead of the generator voltage.

All other digital inputs (43~55) are configurable and do not have overload management functionality.

4.2.5 Busbar Connection (BTB) Mode

A circuit breaker used to connect two busbars, which does not control any prime mover.

Terminals 26/27 provide BTB on/off feedback.

The AC measurement side (Slot # 5) simultaneously measures the three-phase voltage of bus A and bus B for synchronous detection.

The MPU input in Slot # 7 (engine interface) is labeled as "NOT USED", but the multi-purpose input can still be configured.

Multi input and Analog Configuration

Terminals 102-110 (Slot # 7) provide three sets of multifunctional inputs (A/B/C contacts), each of which can be independently set to the following types:

Digital input with wire breakage monitoring (default): A 270 Ω resistor needs to be connected in parallel with external contacts to detect wire breakage.

0 (4)~20mA analog quantity: external two-wire or four wire transmitter (note impedance of 50 Ω).

Pt100/Pt1000 thermistor temperature measurement (-40~250 ℃).

RMI (Resistance Measurement): 0~1700 Ω.

0~40V DC voltage input.

Configuration method: Upload the parameter list through PC software, select the signal type and alarm limit (high alarm/low alarm) in the corresponding input channel.

Communication interface and bus networking

6.1 Internal CAN bus (power management)

Terminals A1/A2/A3 and B1/B2/B3 (Slot # 7) provide two redundant CAN interfaces for load distribution and data exchange between multiple PPM-3 devices.

The maximum length of the bus is 200 meters, exceeding which a fiber optic converter is required.

It is recommended to use shielded twisted pair cables with a terminal resistance of 120 Ω (optional built-in).

6.2 Modbus RTU (Option H2)

Terminals 29~36 (Slot # 2) provide two independent RS-485 interfaces (internally connected in parallel).

Shielded twisted pair cables are used for wiring, and the shielding layer is grounded at one end.

The end of the bus needs to be connected to a matching resistor (with a resistance value equal to the characteristic impedance of the cable, usually 120 Ω).

Note: Modbus modules usually do not require bias resistors. If there are more than 32 nodes or the line is too long, you can refer to the internal 22k Ω up/down resistor calculation.

6.3 Profibus DP (Option H3)

Terminals 29~36 are defined as Profibus signals (B line, A line GND）， Corresponding to the 9-pin Sub-D pin.

Shielded twisted pair cables are also used, with a single end grounded.

6.4 CAN engine communication (options H5/H7)

H5 and H7 correspond to engine ECU interfaces of different protocols (such as J1939, MTU MDEC, etc.).

The wiring also uses shielded twisted pair cables, with a terminal resistance of 120 Ω and a single end grounding of the shielding layer.

Attention: The terminal resistor on the engine side may be built-in, please refer to the engine manufacturer's manual.

Interface scheme between Governor (GOV) and AVR