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Engine interface module EIM3.1 EIM3.1

The engine interface module has its own power supply and a tacho input to measure speed. It also has four relay outputs, four digital inputs, and three analogue inputs. These I/Os are configurable.
The engine interface module has its own power supply and a tacho input to measure speed. It also has four relay outputs, four digital inputs, and three analogue inputs. These I/Os are configurable.
The power supply terminals include circuit protection against load dump transients and JEM177 surge transients (rugged design).
Physical Connections
- Supply
- 12 or 24V DC Power supply and frame ground
- 1 x Relay output - Configurable
- 30 V DC, and 6 A
- 1 x Relay output with wire break detection*- configurable
- 30 V DC, and 6 A
- 4 x Digital inputs – configurable (Bipolar
- ON: -36 to -8 V DC, and 8 to 36 V DC
- OFF: -2 to 2 V DC
- Voltage withstand: ±36 V DC
- 1 x Magnetic pickup with wire break detection* **
- 3 to 70 V AC peak
- 2 to 20,000 Hz
- Can be useful during start-up, when the generator frequency is too low to be a reliable indication of genset speed
- 1 x Generator tacho output or NPN/PNP sensor **
- 8 to 36 V DC
- 2 to 20,000 Hz
- Typically signal from one of the phases of the generator.
- Can be useful during start-up, when the generator frequency is too low to be a reliable indication of genset speed
- 3 x Analogue current or resistance measurement inputs (RMI) – configurable
- Current standard 0 to 20 mA, 4 to 20 mA or configurable 0 to 25 mA
- Pt100/1000 -40 to 250 °C (-40 to 482 °F)
- Resistance Any custom range between 0 and 2.5 kΩ
- Digital input Dry contact with cable supervision maximum 330 Ω for ON detection
Supply voltage low alarm
- The alarm is activated when the power supply voltage is less than the setpoint for the delay time.
Supply voltage high alarm
- The alarm is activated when the power supply voltage exceeds the set point for the delay time
Magnetic pickup wire break
- This alarm is for magnetic pickup wire break. If the engine is running, but there is no pulse for 2 seconds, then the controller monitors the cable. If there is no change during the alarm delay time, then the controller activates the alarm.
Auxiliary power supply voltage as an analogue output
- You can configure an analogue output with a function for the auxiliary power supply voltage. The controller then adjusts the analogue output to reflect the operating value.
- An analogue output with the power supply voltage may be wired to a switchboard instrument. The operator can then see if the auxiliary power supply fails.
*Note: These inputs cannot both be used at the same time.
**Note You cannot use both the MPU and Tacho input at the same time
All analogue multi-functional inputs for EIM3.1 have a common ground