Woodward 8923-2049 Large Engine Control Module (LECM)

The MicroNet Plus Expansion Chassis may use either single or redundant power supplies.

Each power supply module produces three regulated outputs: 

24 V @ 12 A (max), 5 V @ 32 A (max, derated above

55 degree C external ambient temperature), and 5 V Precharge @ 3 A (max).

A motherboard located on the back of the chassis provides the 

interconnection of the three outputs from each power supply module

into three corresponding power busses: 24 V bus, 5 V bus, and 5 V precharge bus.

The 24 V and 5 V busses are load shared between the two power supply modules.

The 5 V precharge bus is not load shared.

Power output regulation at the motherboard, including line, load, and temperature effects,

is less than ±10% for the 24 V bus, +/-5% for the 5 V bus, 

and +/-10% for the 5 V Precharge bus.

The power supplies can only be installed into slots PS1 (power supply #1) and PS2 (power supply #2). If

redundant power supplies are not needed, blanking plates must be installed in the slots not being used.

Branch circuit fuses, circuit breakers, and wiring must meet appropriate codes and authorities having

jurisdiction for the specific country (CE, UL, etc.). See Table 4-3 for maximum recommended fuse or

breaker ratings. Do not connect more than one main power supply to any one fuse or circuit breaker. Use

only the wire sizes specified in Table 4-3. which meet local code requirements.

Time delay fuses or circuit breakers must be used to prevent nuisance trips.

Woodward Discrete Output Relay - 16 channel, 10 Amp at 28 VDC 1751-6091

Woodward Discrete I/O - 24 Inputs /12 Relay Outputs 5441-693

Woodward Discrete I/O - 24 Inputs /12 Relay Driver 5441-694

Woodward Discrete I/O - 48 Inputs – 24 VDC, 24 Discrete Outputs 5501-367

Woodward TMR Discrete I/O - 6 Inputs, 3 Relay Outputs 5453-276

Woodward RTD Input - 8 Channel 8200-1200

Woodward Thermocouple Input - 8 Channel, Fail high 8200-1201

Woodward 4-20 mA - 8 Inputs / 2 Outputs 8200-1202

Woodward 4-20 mA - 8 Inputs / 2 Outputs, 24 VDC Loop Power 8200-1203

Woodward Discrete Input - 16 Channel 8200-1204

Woodward Discrete Output - 16 Channel 8200-1205

Woodward RTD Input - 8 Channel 8200-1100

Woodward Thermocouple Input - 8 Channel, Fail high 8200-1101

Woodward Thermocouple Input - 8 Channel, Fail high, High Accuracy 8200-1151

Woodward 4-20 mA - 8 Inputs / 2 Outputs 8200-1102

Woodward 4-20 mA - 8 Inputs / 2 Outputs, 24 VDC Loop Power 8200-1103

Woodward Discrete Input - 16 Channel 8200-1104

Woodward Discrete Output - 16 Channel 8200-1105

Woodward Termination Resistor Kit 8923-1889

Woodward Dataforth I/O Thermocouple - K-Type 1784-1028

Woodward Dataforth I/O RTD - 100 Ohm 1784-655