Deutz EMS2, System Description

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Page 68
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EMS 2
Inputs/Outputs
5.2 Outputs
5.2.1 General
On configuration of outputs 1 to 6 as digital outputs , these function as switches to ground.
Via configuration, a digital value (e.g. "Speed in the shut-off range") may be allocated as a parameter to
each digital output (with the exception of the diagnostic lamp output).
Parameters can be used to set whether the output is switched on or off on the occurrence of the condition.
If outputs 3 and 4 are configured as PWM outputs (PWM = pulse-width modulation), analogue measure-
ment values, which enter the control unit via CAN or the inputs, and internal EMS 2 variables, can be out-
put.
A measurement value (e.g. "Speed") may be allocated to each PWM output via configuration.
The output frequency of the PWM signal can be parameterised in the range from 85 Hz to 500 Hz, whilst the
pulse-width, i.e. the high or low time, changes in the same manner as the variable which is adjusted via a
characteristic curve.
In the event of a fault, a cable break or a short-circuit can be diagnosed for all outputs.
The following Table provides an overview of the possible outputs at the EMS 2.
Nr. Pin Designation Can e.g. be used for
1 21 Digital 3 Oil pressure telltale
2 22 Digital 4 Shut-off solenoid relay initialisation
3 3 Digital / PWM1 Coolant temperature telltale
4 4 Digital / PWM2 Air filter differential pressure telltale
5 5 Maintenance/service lamp Maintenance/service lamp
6 23 Diagnostic lamp Diagnostic lamp only
21
+U
Batt
15
3
Digital output PWM output
+U
Batt
15
Pull Up
1k
Ω
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