Motortech EasyNOx, Operating Manual

Page: 113 / 142

9 Devices
Rev. 06/2021 113
– MAP Turbo
For normal operation detection of the NO
X
monitor, the absolute charging pressure of a
turbo engine serves as an indicator for the engine load. For this purpose, a manifold
pressure sensor must be connected to input 3 of the respective CAN bus module (see
Wiring of Manifold Pressure Sensor, MAP Signal, Load Signal on page 64).
– Load on CAN Module
The NO
X
monitor detects normal operation by means of the load signal connected to in-
put 3 of the respective CAN bus module (see Wiring of Manifold Pressure Sensor, MAP
Signal, Load Signal on page 64).
– Load via CANopen
The NO
X
monitor detects normal operation by means of the load signal connected to the
analog input of the optional I/O communication module. For this purpose, the function
Load Input for NOx must be assigned to the analog input of the respective I/O communi-
cation module (see Analog Inputs on page 125).
– Start/Stop via CANopen
The NO
X
monitor receives the normal operation release from the master control via a bi-
nary signal connected to the binary input of the optional I/O communication module. For
this purpose, the function
Normal Operation Release for NOx must be assigned to the bi-
nary input of the respective I/O communication module (see Binary Inputs on page 123).
– Scaling Min., Scaling Max.
Via these entries you can specify the measuring value range of the absolute manifold pres-
sure sensor in the NO
X
monitoring modes MAP Naturally Aspirated and MAP Turbo . Under
Scaling Min. , enter the measured value of the sensor at 4 mA and under Scaling Max. at
20 mA. The values in-between are interpolated linearly.
– MAP < / MAP > / Last / ---
The entry displayed at this point depends on the set NO
X
monitoring mode:
– MAP <
In the NO
X
monitoring mode MAP Naturally Aspirated you set the absolute charging
pressure which must be undercut for normal operation detection (see Determining Char-
ging Pressure for Normal Operation Detection on page 57).
– MAP >
In the NO
X
monitoring mode MAP Turbo , you set the absolute charging pressure which
has to be exceeded for normal operation detection (see Determining Charging Pressure
for Normal Operation Detection on page 57).
– Load
In the NO
X
monitoring modes Load on CAN Module and Load via CANopen , you specify
the load that indicates the beginning of normal operation of your engine (for example 30
% nominal load as per VDMA 6299:2019-09 or as per the engine manufacturer's specifi-
cations).